N523AE

Part: HINGE — CHAFED (ZONE 200)

PAX DOOR HINGE (FUSELAGE SIDE) HAS CHAFING DAMAGE THE ENTIRE LENGTH BETWEEN THE LUGS. THE HINGE ALSO HAS A GOUGE BESIDE THE AFT LUG, APPROXIMATELY 0.5" LONG AND .025" DEEP. CORRECTIVE ACTION: REMOVED AND REPLACED PAX DOOR HINGE AT FUSELAGE SIDE P/N SH670-31876-13 IAW CRJ 700 SRM 51-42-21-001-001-A01

Part: ANGLE — DAMAGED (ZONE 200)

FS 280 CROSSBEAM AND AFT J-ANGLE ARE CORRODED ALONG THE UPPER EDGE. CORRECTIVE ACTION: CORROSION FOUND ON MULTIPLE CROSS SECTIONS. REPLACE J-ANGLE WITH NEW. LOCATED AND DRILLED NEW "J" ANGLE CC670-34095-1 IAW CRJ 700 SRM 51-42-21-001-001-A01. INSTALLED NEW J-ANGLE CC670-34095-1 IAW CRJ 700 SRM 51-42-06-001-001-A01 AND 51-42-21-001-001-A01.

Part: FLOORBEAM — CORRODED (ZONE 200) · corrosion level 2

GALLEY 1 FWD INBRD SIDE FLOOR FITTING AT THE 280 IS CORRODED AND REQUIRES REPLACEMENT. CORRECTIVE ACTION: REMOVED THREE CORRODED FLOOR FITTING AND DOUBLER PLATES AND INSTALLED THREE NEW FLOOR FITTINGS AND DOUBLER PLATES ON GALLEY 1 IAW CRJ 700 SRM TASK 51-41-04-01-001-A01.

Part: ANGLE — CORRODED (ZONE 800) · corrosion level 2

PAX DOOR UPPER MID ANGLE HAVE MULTIPLE SPOTS OF CORROSION. CORRECTIVE ACTION: REMOVED AND REPLACED IAW CRJ 700 SRMS 51-40-11-001-001-A01 AND 51-42-21-001-001-A01.

Part: RIVET — CORRODED (ZONE 200) · corrosion level 2

R/H F.S. 280 BEAN HAS TWO CORRODED RIVETS BETWEEN RBL 9 TO RBL 18. CORRECTIVE ACTION: REMOVED 2 EACH CORRODED FASTENERS IAW CRJ900 SRM 51-42-13-001-001-A01. INSTALLED 2 NEW FASTENERS. APPLIED TO FASTENERS. IAW CRJ900 SRM 51-42-13-001-001-A01, 51-25-16-001-001-A01.

Part: WEB — CORRODED (ZONE 200) · corrosion level 2

UPON REMOVAL OF J-ANGLE FOUND R/H STA 280 CROSSBEAM AND WEB CORRODED CORRECTIVE ACTION: LOCATED AND DRILLED NEW R/H CROSSBEAM PN# CC670-34094-2 IAW CRJ 700 SRM 51-40-11-001-001-A01. R/H LOWER WEB, R/H BUTTSTRAP & R/H CROSSBEAM INSTALLED PER SERVICE BULLETIN 670BA-53-041 REV. M DATED SEP 20/2022, REF. MAIN WORK CARD ID HN00233650 FOR COMPLIANCE OF SERVICE BULLETIN.

Part: ANGLE — CORRODED (ZONE 800) · corrosion level 2

PAX DOOR LOWER MID ANGLE HAS MULTIPLE SPOTS OF CORROSION. CORRECTIVE ACTION: REMOVED AND REPLACED PAX DOOR LOWER MID ANGLE PN: SH670-31875-3 IAW CRJ700 SRM TASKS 51-42-06-001-001-A01 AND 51-40-11-001-001-A01.

Part: ANGLE — CORRODED (ZONE 200) · corrosion level 2

UPON REMOVAL OF J-ANGLE FOUND R/H STA 280 CROSSBEAM AND WEB CORRODED CORRECTIVE ACTION: FABRICATED, LOCATED AND DRILLED NEW RH LOWER WEB AND BUTTSTRAP FROM MATERIAL 7075-T6 .040" IAW CRJ 700 SRM 51-40-11-001-001-A01, 51-24-36-001-001-A01. MATERIAL ID REF. CRJ 700 53-11-10-201-004-A01. R/H LOWER WEB, R/H BUTTSTRAP & R/H CROSSBEAM INSTALLED PER SERVICE BULLETIN 670BA-53-041 REV. M DATED SEP 20/2022, REF. MAIN WORK CARD ID HN00233650 FOR COMPLIANCE OF SERVICE BULLETIN.

Part: ATTACH ANGLE — CORRODED (ZONE 100) · corrosion level 2

RH LONGERON ATTACHMENT ANGLE (OVERWING FAIRING SUPPORT) IS CORRODED BETWEEN FS 693 AND FS 797. CORRECTIVE ACTION: REPAIRED CORRODED AREAS IAW MHIRJ REO 690-53-82-230 REV -- DATED 2025-04-14.

Part: ANGLE — CORRODED (ZONE 200) · corrosion level 2

UPON REMOVAL OF J-ANGLE FOUND L/H STA 280 CROSSBEAM AND WEB CORRODED CORRECTIVE ACTION: REPLACED LH FS280 LWR WEB PN: 670-53-11-052-1 IAW BOMBARDIER REO 670-53-11-052 REV.-A DATED NOV-18-2004 REPAIR #2.

Part: ANGLE — CORRODED (ZONE 200) · corrosion level 2

UPON REMOVAL OF J-ANGLE FOUND R/H STA 280 CROSSBEAM AND WEB CORRODED CORRECTIVE ACTION: FABRICATED, LOCATED AND DRILLED NEW RH LOWER WEB AND BUTTSTRAP FROM MATERIAL 7075-T6 .040" IAW CRJ 700 SRM 51-40-11-001-001-A01, 51-24-36-001-001-A01. MATERIAL ID REF. CRJ 700 53-11-10-201-004-A01. R/H LOWER WEB, R/H BUTTSTRAP & R/H CROSSBEAM INSTALLED PER SERVICE BULLETIN 670BA-53-041 REV. M DATED SEP 20/2022, REF. MAIN WORK CARD ID HN00233650 FOR COMPLIANCE OF SERVICE BULLETIN.

Part: FLOORBEAM — DAMAGED (ZONE 200)

WHILE REMOVED 280 FLOOR BEAM FOUND 5 EACH FASTENERS TO BE OVERSIZED ON LH FLOOR SILL GOING THROUGH BEAM CORRECTIVE ACTION: COMPLIED WITH ALL STEPS REO 670-53--21-2609 REV-- DATED 2025-04-16

Part: WINDOW — ARCED (ZONE 200) · airframe 46,975 hrs · 35,882 cycles

CAPTAIN SIDE WINDOW ELECTRICAL ARCHING. / REMOVED AND REPLACED THE CAPTAIN SIDE FLIGHT COMPARTMENT SIDE WINDOW IAW AMM 56-12-01-000/400-801-A01-PSA. PERFORMED OPS TEST OF WINDSHIELD/SIDE WINDOW TEMP CONTROLLER IAW AMM 30-41-06-710-801. OPS TEST GOOD. PRESSURIZED A/C AND PERFORMED LEAK CHECK OF CA SIDE WINDOW IAW AMM 21-31-00-910-801-A01-PSA AND 56-12-01-400-801-A01-PSA. LEAK CHECK GOOD. NO FURTHER DEFECTS NOTED

Part: LAMP — INOPERATIVE (ZONE 200) · airframe 46,873 hrs · 35,812 cycles

BURNING SMELL COMING FROM FWD CABIN ROW 1 CEILING LIGHT AREA. THERE WAS NO MEDICAL ATTENTION REPORTED FOR THIS EVENT. / FOUND LAMP CARRIER FOR CEILING LIGHTS ABOVE ROW 1 TO BE FAULTED INTERNALLY CAUSING BURNING SMELL. REMOVED AND REPLACED BOTH LAMP CARRIERS IAW CRJ AMM 33-21-01-000/400-801-A01. OPS CHECK GOOD AT THIS TIME.

Part: BPSU — FAULTED (TE FLAPS) · airframe 46,073 hrs · 35,119 cycles

FLAPS FAIL CAUTION AFTER T/O. / UPON TROUBLESHOOTING FOUND LH FLAP BPSU DISCONNECTED. MANUALLY RIGGED LH BPSU IAW CRJ 700 AMM 27-52-03-801-A01. PRIOR TO CONNECTING OTBD FLAP TORQUE TUBE VERIFIED LH FLAP BPSU IS WITHIN RIG LIMITS. INSTALLED OTBD FLAP TORQUE TUBE CRJ 700 AMM 27-52-01-400-809-A01. ELECTRICALLY RIGGED IAW CRJ 700 AMM 27-52-03-820-802.

Part: DISPLAY — FAILED (ZONE 200) · airframe 45,961 hrs · 35,022 cycles

MFD 2 FAIL IN FLIGHT DU #5 / RESET MFD 2 IAW CRJ 700 AMM 31-61-01-400-801. NO DEFECTS NOTED.

Part: DISPLAY — FAILED (ZONE 200) · airframe 45,961 hrs · 35,022 cycles

MFD 1 FAIL IN FLIGHT DU #5 / RESET MFD 1 IAW CRJ 700 AMM 31-61-01-400-801. NO DEFECTS NOTED.

Part: ENGINE — ODOR · airframe 40,660 hrs · 30,333 cycles

FLIGHT 5359 WAS ALREADY DELAYED SEVERAL HOURS DUE TO SMOKE FILLING THE CABIN DURING AIR START. IT WAS DETERMINED THAT THE SMOKE WAS COMING FROM THE AIR START. FLIGHT FINALLY LEFT JAN AT 1731Z. DURING CLIMB, CREW BEGAN TO SMELL SMOKE. NONE WAS VISIBLE. CA BELIEVED THAT IT WAS LIKELY RESIDUAL FROM THE PREVIOUS ISSUE. AFTER PASSING FL100, WITH NO CHANGE, THE CA ASKED THE FA IF THEY SMELLED IT IN THE BACK AS WELL. FA STATED THAT THEY COULD SMELL IT IN THE CABIN AS WELL. CA MADE THE DECISION TO RETURN TO JAN. NO EMERGENCY WAS DECLARED AND THE AIRCRAFT WAS NOT OVERWEIGHT AT LANDING. NO TRUCKS ROLLED, AND THE FLIGHT WAS ABLE TO TAXI BACK TO THE GATE WITHOUT FURTHER ISSUES AND DELPLANE. / PERFORMED ENGINE DRY OUT TO REMOVE SMELL IAW CRJ 700 AMM 72-00-00-100-802-A01-PSA STARTING WITH STEP H AND GOING THROUGH UNTIL COMPLETION OF STEP I. SMELL IS NO LONGER PRESENT.

Part: SEAL — OUT OF POSITION (PAX DOOR) · airframe 40,200 hrs · 29,921 cycles

CABIN DOOR SEAL POPPED, DECLARED AN EMERGENCY AND DESCENDED TO FL120, THEN CANCELED EMERGENCY. MAIN PAX DOOR SEAL BROKEN IN FLIGHT / RE-SECURED PASSENGER DOOR SEAL IAW CRJ700 AMM 52-11-07-400-801-A02. LEAK CHECK GOOD AT THIS TIME. VISUALLY CHECK PASSENGER DOOR SEAL NO DAMAGED NOTED IAW CRJ700 AMM 52-11-07-210-801-A01.

Part: POWER SUPPLY — DISCHARGED (CABIN) · airframe 38,228 hrs · 28,186 cycles

EMERGENCY LIGHTS GO OUT AFTER A FEW SECONDS OF BEING TURNED ON. REMOVED AND REPLACED ALL FOUR EMERGENCY POWER SUPPLY UNITS. OPS CHECK GOOD. #1 P/N 2013-1A S/N 99189, #2 P/N 2013-1A S/N 125186, #3 P/N 2013-1A S/N 122970, #4 P/N AD2013-1A S/N 97199.

Part: WARNING MESSAGE — FALSE ACTIVATION (EMERGENCY EXIT) · airframe 37,122 hrs · 37,220 cycles

RIGHT EMER DOOR CAUTION MSG DURING TAXI OUT. DEFERRED INDICATION. ON OCT 13 MAINTENANCE PERFORMED HEALTH CHECK OF RH EMERGENCY DOOR PROX SENSOR, OPS CHECK GOOD ON SENSOR AND ALSO DOOR INDICATION SYSTEM. CLEARED MEL

Part: ANGLE — CORRODED (FUSELAGE) · airframe 35,652 hrs · 25,890 cycles

SERVICE DOOR FUSELAGE CUT OUT HAS CORROSION ON THE SILL ANGLE BETWEEN FS 319.70 AND FS 349.00 AT FLOOR LEVEL. REMOVED AND REPLACED SERVICE DOOR SILL ANGLE BETWEEN FS 319.70-349.00 IAW SRM 51-42-06.

Part: STRUCTURE — CORRODED (BS 310-333) · airframe 35,652 hrs · 25,890 cycles

BACK UP SILL BETWEEN FRAMES FS310.00 AND FS333.00 AT STRINGER 21L IS CORRODED-C/A-C/W INSTALLATION OF NEW BACK UP SILL IAW SRM 51-42-06.

Part: CLEAT — CORRODED (FUSELAGE) · airframe 35,652 hrs · 25,890 cycles

FRAME FS319.70 HAS A CORRODED SHEAR CLEAT AT 21L. EVALUATED FRAME FS319.70 AT STRINGER 21L, FOUND ONLY LIGHT SURFACE CORROSION. REPAIRED IAW SRM 51-21-06.

Part: FLOOR SUPPORT — CORRODED (FUSELAGE) · airframe 35,652 hrs · 25,890 cycles

LT OUTBD LONGITUDINAL FLOORBEAM IS CORRODED BETWEEN FS1000.00 AND FS1031.00. C/A-COMPLETE:REPAIRED IAW ERS-CR-5300-3632.

Part: SIGN — UNSECURE (CABIN) · airframe 35,073 hrs · 25,392 cycles

EMERGENCY EXIT SIGN OVER SERVICE DOOR FALLING DOWN. REMOVED AND REPLACED EXIT SIGN ASSY OVER SERVICE DOOR IAW AMM 33-51-05.

Part: CONNECTOR — DIRTY (BRAKE SYSTEM) · airframe 35,050 hrs · 25,372 cycles

BRAKE OVHT WARNING ENROUTE AT FL360. RAN CHECKLIST RESET SYSTEM WITH BTMS BUTTON NR 4 BRAKE INDICATED 14. CLEANED AND APPLIED STABILANT TO J616/P616 PIN 3 AND 4 IAW EEC SPM. OPERATIONAL CHECKS GOOD IAW AMM 32-46-00. NO FURTHER FRETTING OR DEFECTS NOTED.

Part: LAMP — INOPERATIVE (EMERGENCY LIGHT) · airframe 35,009 hrs · 25,338 cycles

EMERGENCY LIGHT OUT AFT CABIN 2ND LIGHT FROM END OF AFT CABIN-C/A-DEFERRED EMERGENCY LIGHT IAW MEL 33-34. REMOVED AND REPLACED CEILING EMERGENCY-FLOOD-LIGHT LAMP IAW CRJ-700 AMM 33-51-09 OPS CHECK GOOD MEL ITEM RESTORED

Part: THERMOCOUPLE — FAILED (BRAKE SYSTEM) · airframe 34,857 hrs · 25,213 cycles

BRAKE OVERHEAT INDICATION ON THE RIGHT OUTBOARD DURING CRUISE AT FL 300. RAN THE PROCEDURE, DECLARED EMERGENCY. LANDED IWTHOUT INCIDENT. INDICATIONS NORMAL AFTER PROCEDURE. REMOVED AND REPLACED THE THERMOCOUPLE SENSOR IAW AMM 32-46-01 OPS CHECKED GOOD.

Part: WARNING MESSAGE — ILLUMINATED (SPOILERS) · airframe 34,326 hrs · 24,782 cycles

DURING DECENT, DEPLOYED FLIGHT SPOILERS SLOWLY GOING THRU FL260 AFTER 10 SECONDS OF DEPLOYMENT, CAUTION MESSAGE FOR OTBD SPOILERONS & OTBD FLT SPOILERS DISPLAYED. INTERROGATED MDC, FOUND CORRELATED MESSAGE, LT OTBD MFS PCU BINDING. PERFORMED SPOST 1 RESET IAW AMM 27-61-05 AND PERFORMED AN OPERATIONAL TEST OF MFS ACTUATORS IAW AMM 27-62-01. OPS TESTED GOOD. NO FURTHER DEFECTS NOTED.

Part: ROTOR — SHEARED (NR 1 STAGE) · airframe 33,191 hrs · 23,901 cycles

WHILE ACCOMPLISHING W/C 72-009 PG 5, BORESCOPE PROCEDURES, FOUND ONE STAGE 1 HP TURBINE ROTOR BLADE SHEARED. REMOVED AND REPLACED THE LT ENGINE IAW WORK CARDS 71-001 AND 71-002. OPS CHECKED GOOD. NO LEAKS NOTED.

Part: LAMP — INOPERATIVE (EMERGENCY LIGHT) · airframe 32,652 hrs · 23,472 cycles

AFT OVERHEAD EMERGENCY LIGHT INOPERATIVE. REMOVED AND REPLACED THE LAMP, OPS CHECKED GOOD IAW AMM 33-51-09.

Part: SPOILER SYS — MALFUNCTIONED · airframe 32,527 hrs · 23,372 cycles

WHEN USING THE FLIGHT SPOILER LEVER IN FLIGHT AT 27,000 FEET, A CAUTION MESSAGE FOR THE INBD FLT SPOILERS AND INBD SPOILERONS APPEARED. INTERROGATED MDC, FOUND THE RT INBD MFS PCU BINDING MDC MESSAGE. PERFORMED SPOST 1 RESET. PERFORMED OPS CHECK IAW ETN-CR-27-093. OPS CHECKED GOOD.

Part: SENSOR — FAILED (RT BRAKE TEMP) · airframe 32,464 hrs · 23,325 cycles

BTMS OVERHEAT WARNING DURING CLIMB OUT, RIGHT OTBD BRAKE. REMOVED AND REPLACED THE RT OTBD BRAKE TEMP SENSOR IAW AMM 32-46-01, OPS CHECKED GOOD. PERFORMED DVI OF BRAKE SYSTEM IAW AMM 05-51-09, NO DEFECTS NOTED.

Part: BATTERY PACK — DISCHARGED (EMERGENCY LIGHTS) · airframe 32,414 hrs · 23,288 cycles

EMERGENCY LIGHTS INOPERATIVE. BATTERY DEAD. R & R EPSU BATTERY PACKS 3 AND 4 IAW MM 33-51-17. OPS CHECKED GOOD.

Part: BATTERY PACK — DISCHARGED (EMERGENCY LIGHTS) · airframe 32,414 hrs · 23,288 cycles

EMERGENCY LIGHTS INOPERATIVE. BATTERY DEAD. REMOVED AND REPLACED EPSU BATTERY PACKS 1 AND 2 IAW MM 33-51-17. OPS CHECKED GOOD.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 32,411 hrs · 23,286 cycles

RIGHT SIDE AFT EMERGENCY EXTERIOR LIGHT INOPERATIVE. REMOVED AND REPLACED THE RT AFT EMERGENCY EXTERIOR LIGHT IAW STANDARD MAINTENANCE PRACTICES. OPS CHECKED GOOD IAW AMM 35-51-15.

Part: CONNECTOR — DISCONNECTED (EMERGENCY LIGHTS) · airframe 31,965 hrs · 22,934 cycles

ONE CABIN EMERGENCY LIGHT INOPERATIVE. FOUND AN ELECTRICAL CONNECTOR DISCONNECTED. CONNECTED THE ELECTRICAL CONNECTOR IAW AMM 25-26-05. OPS CHECKED GOOD.

Part: TEE FITTING — CRACKED (BS 280) · airframe 31,686 hrs · 22,706 cycles

LEFT TEE BRACKET UNDER CROSSMEMBER AT BS 280 IN LEFT INBOARD FLOOR SUPPORT IS CRACKED. FABRICATED AND INSTALLED NEW TEE BRACKET IAW SRM 53-11-41, 51-42-06, 51-42-21.

Part: TEE FITTING — CRACKED (BS 280) · airframe 31,686 hrs · 22,706 cycles

RIGHT TEE BRACKET AT BS 280 IS CRACKED. FABRICATED AND INSTALLED A NEW TEE BRACKET IAW SRM 53-11-41, 51-42-06, AND 51-42-21.

Part: ATTACH ANGLE — CRACKED (PAX DOOR) · airframe 31,686 hrs · 22,706 cycles

PASSENGER DOOR AFT STEP SKIN ATTACH ANGLE CRACKED BY PULLEY BRACKET. REPAIRED PAX AFT DRAG ANGLE IAW SRM 52-11-04.

Part: BULKHEAD WEB — CORRODED (BS 280) · airframe 31,686 hrs · 22,706 cycles

RIGHT LOWER BULKHEAD WEB AT BS 280 IS CORRODED JUST ABOVE CROSSBEAM. REPAIRED IAW EO CR-53MR-174.

Part: STRUCTURE — CRACKED (FUSELAGE) · airframe 31,686 hrs · 22,706 cycles

FORWARD EQUIPMENT BAY FLOOR HAS A 1/8" CRACK BY LOWER AFT CUTOUT FOR 211AL. REPAIRED FWD EQUIPMENT BAY FLOOR IAW ETN CR-53-099.

Part: FRAME — CORRODED (BS 319) · airframe 31,686 hrs · 22,706 cycles

FRAME AT BS 319.70 IS CORRODED BETWEEN STRINGERS 26-27L. COMPLETED INSTALLATION OF SPLICE PLATE, INSTALLED ATTACHMENT BRACKETS AND COMPLETED INSTALLATION OF STRINGER CLEATS IAW ERS-CR-53MR-2561.

Part: FLOORBEAM — CORRODED (BS 280) · airframe 31,686 hrs · 22,706 cycles

FLOORBEAM AT BS 280 IS CORRODED AND HAS A ONE INCH CRACK. INSTALLED A NEW FLOORBEAM IAW SRM 51-42-06.

Part: BULKHEAD — CORRODED (FUSELAGE) · airframe 31,686 hrs · 22,706 cycles

LEFT BULKHEAD AFT SIDE HAS CORROSION JUST ABOVE FS280.00. INSTALLED NEW FABRICATED LT LOWER WEB IAW CRH SRM CH 53-11-10.

Part: FRAME — CORRODED (BS 265) · airframe 31,686 hrs · 22,706 cycles

FRAME AT BS 265 IS CORRODED BETWEEN STRINGERS 26L-26R. REMOVED AND REPLACED FRAME STIFFENER IAW SRM 51-42-06.

Part: SUPPORT — CORRODED · airframe 31,686 hrs · 22,706 cycles

NOSE JACK FITTING SUPPORT BETWEEN BS 265 - 280 IS CORRODED. REMOVED AND REPLACED RT NOSE JACK FITTING SUPPORT IAW SRM 51-42-06 AND SRM 51-42-21.

Part: FLASHLIGHT — INOPERATIVE (CABIN) · airframe 31,230 hrs · 22,331 cycles

AFT ATTENDANT FLASHLIGHT INOP. REMOVED AND REPLACED AFT FLIGHT ATTENDANT FLASHLIGHT IAW EEL.

Part: LIGHT — ODOR (GALLEY) · airframe 31,115 hrs · 22,234 cycles

GALLEY LIGHTS BURNING ODOR REPORTED BY FLIGHT ATTENDANTS. OPC GALLEY LIGHTS IAW AMM 33-26-00. OPERATED GALLEY LIGHTS FOR SEVERAL HOURS WITH OUT HAVING ODORS IN GALLEY FROM LIGHTS. OPS CHECKED GOOD.

Part: ENGINE — MALFUNCTIONED (LEFT) · airframe 30,214 hrs · 21,563 cycles

AFTER TAKEOFF CREW HEARD A BANGING NOISE ON ROTATION. CREW DECLARED EMERGENCY & RETURNED WITHOUT INCIDENT. SUSPECT, ENGINE COMPRESSOR STALL AFTER TAKEOFF ROTATION, LOUD BANDING NOISE ACFT SWAY TO LT AND RT. R & R LT ENGINE IAW WORK CARD 71-001 AND 71-002, OPS CHECK GOOD.

Part: ROLLER — LACK OF LUBE (CABIN DOOR) · airframe 30,180 hrs · 21,537 cycles

MAIN ENTRY DOOR HARD TO OPEN FROM INSIDE & OUTSIDE THE ACFT. PERFORMED MAIN CABIN DOOR ROLLER LUBE IAW AMM 52-11-00. OPERATIONS CHECKED OK.

Part: HANDLE — LACK OF LUBE (PAX DOOR) · airframe 30,159 hrs · 21,520 cycles

PASSENGER DOOR HANDLE IS JAMMED, CANNOT OPEN DOOR FROM INSIDE. LUBED DOOR HANDLE IAW STANDARD PRACTICES. NO DEFECTS NOTED.

Part: STIFFENER — CRACKED (FUSELAGE) · airframe 28,849 hrs · 20,500 cycles

FWD SIDE OF BULKHEAD AT FS 202.75, FOUND INDICATION ON TOP OF STIFFENER, RBL30.0, APPROX 1/8" LONG, STIFFENER FAILED NDT INSPECTION. REPAIRED IAW REO 670-53-11-1099 & NCR-CR-53-152.

Part: STIFFENER — CRACKED (FUSELAGE) · airframe 28,849 hrs · 20,500 cycles

FORWARD SIDE OF BULKHEAD AT FS 202.75, FOUND INDICATION ON TOP OF STIFFENER RBL 30.0, APPROX 1/8" LONG. STIFFENER FAILED NDT INSPECTION. REPAIRED IAW REO 670-53-11-1099 & NCR-CR-53-152.

Part: POST — CRACKED (FUSELAGE) · airframe 28,849 hrs · 20,500 cycles

AT FS 847.00, LBL 18.00, VERTICAL POST HAS AN INDICATION NOTED IN THE RADIUS OF THE HORIZONTAL FLANGE, AT THE FWD FASTENER INBD SIDE, APPROX .250"L X 70% FSH. FAILED NDT INSPECTION.

Part: POST — CRACKED (FUSELAGE) · airframe 28,849 hrs · 20,500 cycles

AT FS 847.00, LBL 27.00, VERTICAL POST HAS AN INDICATION NOTED IN THE RADIUS OF THE HORIZONTAL FLANGE, AT THE FWD FASTENER INBD SIDE, APPROX .250"L X 80% FSH. FAILED NDT INSPECTION.

Part: FLASHLIGHT — INOPERATIVE (CABIN) · airframe 27,783 hrs · 19,665 cycles

FORWARD FLIGHT ATTENDANT FLASHLIGHT INOPERATIVE. R & R FWD FLIGHT ATTENDANT FLASHLIGHT AS REQUIRED. OPERATIONS CHECKED GOOD.

Part: HOLDER — DEFECTIVE (FLASHLIGHT) · airframe 26,966 hrs · 19,026 cycles

FIRST OFFICER`S FLASHLIGHT HOLDER DOES NOT HOLD COCKPIT EMER FLASHLIGHT SECURELY, FALLS OUT. R & R FIRST OFFICER`S FLASHLIGHT HOLDER IAW AMM 25-61-02. OPERATIONS CHECKED GOOD.

Part: COMPRESSOR BLADE — LACK OF LUBE (NR 2 ENGINE) · airframe 26,332 hrs · 18,516 cycles

AT INITIAL CRUISE FLIGHT, NR 2 ENG FAN REACHED APPROX 3.5 VIBRATION. AOM VOL 1 PROCEDURE FOLLOWED. REDUCTION IN THRUST EVENTUALLY HELPED A BIT. FOLLOWED PROCEDURE IN AMM 22-21-02 & PERFORMED THE VIBRATION CHECK IAW 71-00-00. PERFORM BLADE LUBE WITHIN 50 F IAW TDMI 523T7721.

Part: LIGHT — INOPERATIVE · airframe 25,911 hrs · 18,172 cycles

EMERGENCY LIGHT IMMEDIATELY AFT OF PAX DOOR IS INOPERATIVE. R & R EMER LIGHT BULB LOCATED IMMEDIATELY AFT OF PAX DOOR IAW AMM 33-51-15.

Part: STRAP — CRACKED (FUSELAGE) · airframe 25,784 hrs · 18,071 cycles

AFT BELLY PANEL 196DR HAS A CRACKED SUPPORT STRAP. REPAIRED CRACKED SUPPORT FOR THE AFT FAIRING 196DR IAW SRM 53-82-83.

Part: DOUBLER — CORRODED (FUSELAGE) · airframe 25,784 hrs · 18,071 cycles

ANTENNA DOUBLER BETWEEN FS 295.00 - 310.00 AT STRINGER 27 IS CORRODED. R & R THE ANTENNA DOUBLER BETWEEN FS 295.00 - 310.00 AT STRINGER 27 IAW SRM 51-42-06.

Part: AILERON — CRACKED (RT WING) · airframe 25,784 hrs · 18,071 cycles

TRANSFERRED FROM AML PAGE 3419401 NR 1. RT AILERON HAS A LARGE CRACK ON THE OTBD EDGE, AFT CORNER. DEFERRED IAW ETN CR-57-037 AUTH 523570590. PERFORMED PERMANENT REPAIR DISBONDING OTBD EDGE RUBBING BLOCK ON RT AILERON IAW ETN-CR-57-053.

Part: CROSSBEAM — CORRODED (FUSELAGE) · airframe 25,784 hrs · 18,071 cycles

CROSSBEAM AT FS 280.00 IS CORRODED. R & R CROSSBEAM AT FS 280.00 IAW SRM 51-42-06, SRM 51-42-13 & SRM 51-42-21.

Part: PLATE — CRACKED (FUSELAGE) · airframe 25,784 hrs · 18,071 cycles

FORWARD EQUIPMENT COMPARTMENT FLOOR IS CRACKED UNDER THE ADG PUMP. REPAIRED FWD EQUIPMENT COMPARTMENT FLOOR UNDER THE ADG PUMP IAW ETN-CR-53-099.

Part: BRACKET — CRACKED (FUSELAGE) · airframe 25,784 hrs · 18,071 cycles

RIGHT SIDE BRACKET AT BL 9.04 ON CROSSBEAM AT FS 280.00 HAS A 1/4 INCH CRACK. FABRICATED & INSTALLED BRACKET & FILLER PIECE IAW SRM 53-11-41.

Part: ANGLE — CRACKED (FUSELAGE) · airframe 25,784 hrs · 18,071 cycles

SECOND FROM INBD BULKHEAD ANGLE AT 280 LT IS CRACKED. R & R OF ANGLE IAW SRM 51-42-06.

Part: BRACKET — CRACKED (FUSELAGE) · airframe 25,784 hrs · 18,071 cycles

LEFT SIDE BRACKET AT BL 9.04 ON CROSSBEAM AT FS 280.00 HAS A 1/8 INCH CRACK. FABRICATED & INSTALLED NEW BRACKET & FILLER PIECE IAW SRM 53-11-41.

Part: SKIN — CRACKED (PAX DOOR) · airframe 25,784 hrs · 18,071 cycles

PASSENGER DOOR AFT SIDE SKIN HAS A 1 1/4 INCH CRACK BEHIND STIFFENER FOR GAS SPRING. REPAIRED PAX DOOR IAW ETN-CR-52-039.

Part: DIAPHRAGM — CRACKED (MLG WW) · airframe 25,784 hrs · 18,071 cycles

LEFT & RIGHT WW DIAPHRAGMS CRACKED. R & R LT & RT WW DIAPHRAGMS IAW AMM 53-83-85. DIAPHRAGM PN CC670-39205-5.

Part: POWER UNIT — INOPERATIVE (FLASHLIGHT) · airframe 25,523 hrs · 17,886 cycles

FIRST OFFICER`S FLASHLIGHT DOES NOT WORK, INDICATES CHARGING IN HOLDER BUT DOES NOT HOLD CHARGE. R & R POWER UNIT FOR FIRST OFFICER`S FLASHLIGHT IAW CMM 25-60-11. OPERATIONS CHECKED IAW AMM 25-60-00, OPERATIONS CHECKED GOOD.

Part: CRADLE — INOPERATIVE (FLASHLIGHT) · airframe 25,436 hrs · 17,830 cycles

FIRST OFFICER'S FLASHLIGHT NOT CHARGING IN HOLDER. R & R FIRST OFFICER`S FLASHLIGHT HOLDER IAW AMM 25-61-02.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 25,126 hrs · 17,629 cycles

AFT EMERGENCY LIGHT INOPERATIVE. RELAMPED AFT CEILING EMERGENCY LIGHT IAW AMM 33-51-00, ALL CHECKED GOOD.

Part: SENSOR — FAILED (RT WING) · airframe 24,999 hrs · 17,543 cycles

GOING THROUGH 13,000 FT, GOT WING OVERHEAT WARNING. REMAINED ON ABOUT 20 SECONDS, WENT OUT, THEN CAME RIGHT BACK ON, OCCURRED NUMEROUS TIMES. DECLARED EMERGENCY. RETURNED LGA. WING ANTI-ICE WAS NOT ON & ALL AOM PROCEDURES COMPLIED WITH. R & R THE OTBD TEMP SENSOR ON THE RT WING IAW AMM 30-12-08. OPERATIONS CHECKED GOOD IAW ETN-CR-30-004R2. AS A PRECAUTION, AILC WAS R & R IAW AMM 30-12-12, OPERATIONS CHECKED GOOD.

Part: PIN — OUT OF POSITION (MAIN DOOR) · airframe 24,936 hrs · 17,508 cycles

MAIN DOOR WILL NOT CLOSE. DOOR HANDLE PINS IN WRONG POSITION. PUT PINS IN CORRECT LOCATION. OPERATIONS CHECKED GOOD IAW AMM 52-10-00.

Part: FLASHLIGHT — INOPERATIVE (COCKPIT) · airframe 22,664 hrs · 16,056 cycles

ON FLIGHT 3610 THE CREW REPORTED THE CAPTAIN’S FLASHLIGHT WAS INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE CAPTAIN’S FLASHLIGHT ASSEMBLY IAW CRJ 700 AMM 25-61-02. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: FLASHLIGHT ASSY — BROKEN (COCKPIT) · airframe 22,659 hrs · 16,052 cycles

FLIGHT 3610, CREW REPORTED FIRST OFFICER’S FLASHLIGHT HOLDER CLIP BROKEN. REMOVED AND REPLACED FLASHLIGHT HOLDER IAW AMM 25-61-02. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.

Part: DUCT — DEFECTIVE (ANTI-ICE SYS) · airframe 22,593 hrs · 16,017 cycles

ON FLIGHT 3758 THE CREW REPORTED THAT ON CLIMBOUT FROM MSP IN ICING CONDITIONS THEY RECEIVED AN EICAS WARNING "ANTI ICE DUCT" WARNING MESSAGE. MESSAGE EXTINGUISHED WHEN WING ANTI ICE WAS TURNED OFF. THE CREW DECLARED AN EMERGENCY AND RETURNED TO MSP. THE AIRCRAFT LANDED (BELOW) MAX LANDING WEIGHT. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE LEFT WAI SUPPLY DUCT FROM FS 1095.91 TO FS 111.14 IAW CRJ AMM TASK 30-11-02-400-804. LEAK TEST GOOD IAW CRJ AMM TASK 30-11-00-790-801. PARTS REMOVED & REPLACED: DUCT – LEFT, PART NUMBER GG670-80315-3. S/N 0203. GASKET, PART NUMBER MM 670-80505-001. COUPLING, PART NUMBER B0305055-300. BOLT, PART NUMBER NAS6203-5. MACHINE SCREW, PART NUMBER B0201047-3-18. SELF BONDING, INSULATION TAPE, PART NUMBER N384-2955. WASHER, FLAT, PART NUMBER NAS1149D0316K. SEAL, PART NUMBER AS1895-7-325. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: FITTING — BROKEN (FLASHLIGHT) · airframe 22,583 hrs · 16,009 cycles

DURING MAINTENANCE INSPECTION FOUND THE FIRST OFFICER’S EMERGENCY FLASHLIGHT HOLDER BOTTOMS CLIPS BROKEN. THE FLASHLIGHT WAS FOUND STOWED IN THE FORWARD ENTRY AREA STORAGE SPACE. DATE OF DISCOVERY 03/01/13. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE FLASHLIGHT ASSEMBLY IAW AMM 25-61-02. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: LIGHT — INOPERATIVE (EXIT SIGN) · airframe 22,044 hrs · 15,665 cycles

ON FLIGHT 3634 THE CREW REPORTED 3 INOPERATIVE BULBS ON THE LEFT OVERWING EMERGENCY EXIT SIGN (VERTICAL SIGN, FORWARD OF EXIT). THE AIRCRAFT WAS REMOVED FROM SERVICE. RELAMPED AS REQUIRED. THE OPERATIONAL TEST WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: ATTACH ANGLE — CRACKED (VERTICAL TO FUSE) · airframe 20,574 hrs · 14,710 cycles

DURING C-CHECK, FOUND LEFT FORWARD VERTICAL STABILIZER TO FUSELAGE ATTACH ANGLE AFT END IS CRACKED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED ATTACH ANGLE IAW EO CR-55MR-053. THE AIRCRAFT WAS RETURNED TO SREVICE.

Part: ATTACH ANGLE — CRACKED (VERTICAL TO FUSE) · airframe 20,574 hrs · 14,710 cycles

DURING C-CHECK, FOUND RIGHT AFT VERTICAL STAB TO FUSELAGE ATTACH ANGLE FORWARD END IS CRACKED. THE AIRCRAFT WAS REMOVED FROM SERVICE. COMPLIED WITH REPAIR OF RIGHT VERTICAL STAB TO FUSELAGE AFT ATTACH ANGLE IAW EO CR-53MR-164R1. THE AIRCRAFT WAS RETURNED TO SREVICE.

Part: FLOORBEAM — CORRODED (FUSELAGE) · airframe 20,574 hrs · 14,710 cycles

DURING C CHECK INSPECTION, FOUND CROSSBEAM AT FS280.00 TO BE CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED FS280.00 CROSSBEAM IAW BOMBARDIER STRUCTURAL REPAIR MANUAL 51-42-06, 51-42-11 AND 51-42-21. THE AIRCRAFT RETURN TO SERVICE

Part: ATTACH FITTING — CRACKED (VERTICAL TO FUSE) · airframe 20,574 hrs · 14,710 cycles

DURING C-CHECK, FOUND THE RIGHT FORWARD VERTICAL STAB TO FUSELAGE ATTACH ANGLE AFT END IS CRACKED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED DRAG ANGLE IAW EO CR-55MR-053. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: BULB — INTERMITTENT (EMERGENCY LIGHTS) · airframe 20,355 hrs · 14,559 cycles

ON FLIGHT 3749 THE CREW REPORTED 2 BULBS IN THE EMERGENCY ROW EXIT SIGN IN THE WALL ARE BURNED OUT. AIRCRAFT REMOVED FROM SERVICE. PERFORMED OPS CHECK OF LEFT SIDE EMERGENCY ROW EXIT SIGN IAW AMM 33-51-17. OPS CHECKED GOOD. THE BULBS MAY HAVE BEEN JUST LOOSE. AIRCRAFT RETURNED TO SERVICE.

Part: COMPUTER — MALFUNCTIONED (FUEL SYSTEM) · airframe 19,913 hrs · 14,275 cycles

ON FLIGHT 4583 DURING CRUISE THE CREW REPORTED THE FUEL QUANTITY AND GAUGING COMPUTER CHANNELS 2 FAILED. THE CREW DECLARED AN EMERGENCY AND LANDED AT THIER DESTINATION WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE FUEL QUANTITY AND GAUGING COMPUTER IAW CRJ MM 28-41-22. NO FURTHER EICAS MESSAGES. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: COVER — LOOSE (EMERGENCY EXIT) · airframe 19,779 hrs · 14,196 cycles

ON FLIGHT 3702 THE CREW REPORTED THE LEFT EMERGENCY EXIT HANDLE COVER IS LOOSE AND WON'T STAY ON. THE AIRCRAFT WAS REMOVED FROM SERVICE. RE-SECURED COVER IAW STANDARD MAINTENANCE PRACTICES. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: SEAL — DAMAGED (CABIN DOOR) · airframe 19,257 hrs · 13,872 cycles

ON FLIGHT 3612 THE CREW REPORTED THAT AFTER TAKEOFF THE NUMBER 1 FLIGHT ATTENDANT REPORTED A LOUD NOISE FROM THE MAIN CABIN DOOR. F/A ALSO REPORTED THE OUTSIDE WAS VISIBLE THROUGH THE CRACK IN THE UPPER LEFT CORNER OF THE DOOR SEAL AT LEAST 1 INCH. THE NUMBER 2 FLIGHT ATTENDANT REPORTED THE SOUND WAS AUDIBLE IN ROW 18, HOWEVER THERE SEEMED TO BE NO PRESSURIZATION PROBLEMS. THE AIRCRAFT CLIMBED AT 500 FPM AND DID STOP CLIMBING AT 1500 FT. THE CREW ELECTED TO RETURN TO ORD AND LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPLACED TCAS TRANCEVER IAW CRJ AMM TASKS 34-43-01-000-801 AND 34-43-01-400-801. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: BATTERY — DISCHARGED (MEGAPHONE) · airframe 19,042 hrs · 13,732 cycles

DURING MAINTENANCE BASE INSPECTION FOUND THE MEGAPHONE INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE 9 VOLT BATTERY IN MEGA-PHONE AS REQUIRED. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: BALLAST — SHORTED (CABIN) · airframe 19,951 hrs · 15,067 cycles

FOR FLIGHT 3764 WHILE ON THE GROUND DURING BOARDING AN ELECTRICAL BURNING ODOR WAS NOTICED IN THE CABIN. THE CREW EVACUATED THE PASSENGERS. SUSPECT OF ISSUE WAS BAD BALLAST. THE FORWARD SIDEWALL LIGHTS WENT OUT. THE AIRCRAFT WAS REMOVED FROM SERVICE. UPON TROUBLESHOOTING FOUND THE FORWARD LEFT SIDEWALL LIGHT BALLAST BURNED. REMOVED AND REPLACED THE BALLAST IAW CRJ MM 33-21-03. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: RELAY — DEFECTIVE (CABIN) · airframe 16,169 hrs · 11,880 cycles

FOR FLIGHT 3732, AFTER THE SECOND ENGINE START, DURING TAXI THE EMERGENCY LIGHTS KEEP GOING ON AND OFF. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED RELAY K135 IAW CRJ AMM 20-42-00. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: PBE — UNSERVICEABLE (CABIN) · airframe 15,721 hrs · 11,587 cycles

DURING MAINTENANCE BASE VISIT FOUND THE FORWARD CABIN PERSONAL BREATHING EQUIPMENT HAD LOST ITS VACUUM SEAL. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE FORWARD CABIN PERSONAL BREATHING EQUIPMENT AS REQUIRED AND IN REFERENCE EO CR-2500-080R1. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: SILL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 15,138 hrs · 11,215 cycles

DURING MAINTENANCE BASE VISIT FOUND THE FLOOR SILL AT FRAME 349.00 TO BE CORRODED ON THE RIGHT SIDE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED IAW EO CR-23MR-180. REPAIRED IAW EO CR-23MR-180. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: SILL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 15,138 hrs · 11,215 cycles

DURING MAINTENANCE BASE VISIT FOUND THE FLOOR SILL AT FS 349.00 TO BE CORRODED ON THE RIGHT SIDE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED THE CORROSION TO THE RIGHT FLOOR SILL AT FRAME 349.00. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: FLOORBEAM — CRACKED (FUSELAGE) · airframe 15,138 hrs · 11,215 cycles

DURING MAINTENANCE BASE VISIT FOUND FRAME 280 FLOORBEAM LEFT SIDE TO BE CRACKED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE LEFT FLOORBEAM FRAME 280 IAW EO CR-53MR-134R1. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: BATTERY — DISCHARGED (CABIN) · airframe 14,649 hrs · 10,851 cycles

DURING THE PREFLIGHT CHECK FOR FLIGHT 4031 THE CREW REPORTED THAT THE EMERGENCY LIGHTS WOULD NOT STAY ON FOR MORE THAN 10 SECONDS. THE CREW FOUND THE EMERGENCY LIGHT SWITCH IN THE COCKPIT WAS SET IN THE ARMED POSITION WITH NO POWER ON THE AIRCRAFT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE AFT EMERGENCY LIGHT BATTERY IAW CRJ-700 AMM 33-51-17, OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 13,337 hrs · 9,797 cycles

ON FLIGHT 3490 - CREW REPORTED EMERGENCY OVERHEAD CABIN LIGHT AT ROW 10 INOPERABLE. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED EMERGENCY OVERHEAD CABIN LIGHT BULB AT ROW 10. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.

Part: DUCT — FAILED (ANTI ICE SYS) · airframe 12,029 hrs · 8,795 cycles

ON FLIGHT 4505 CREW REPORTED CLIMBING THROUGH FL 300 "COWL ANTI ICE DUCT L" WARNING ON ED1 FOLLOWED CHECK LIST PROCEDURE WARNING MESSAGE REMAINED ENGINE SHUT DOWN AND SINGLE ENGINE OPERATIONS CHECK LIST APPLIED DIVERTED TO SDF AFTER ENGINE WAS SHUT DOWN WARNING MESSAGE CAME ON AND CLEARED SEVERAL TIMES. AIRCRAFT REMOVED FROM SERVICE. FOUND BLEED AIR CROSSOVER DUCT SIDE BLOWN OUT REMOVED AND REPLACED DUCT IAW CRJ AMM 36-19-09. OPS CHECKED GOOD LEAK CHECKED GOOD IAW CRJ 700 36-10-00. AIRCRAFT RETURNED TO SERVICE.

Part: BATTERY PACK — DISCHARGED (CABIN)

ON FLIGHT 3939 CREW REPORTED ON PRE FLIGHT EMERGENCY LIGHTS INOPERATIVE C/A. R&R BATTERY PACK IAW AMM 33-51-17. ACFT RETURNED TO SERVICE.

Part: MANIFOLD — FAULTY (NLG STEERING) · airframe 9,999 hrs · 7,198 cycles

ON FLIGHT 4168, CREW REPORTED AFTER GEAR RETRACTION, GOT A STEERING INOP MESSAGE. CREW FOLLOW THE AOM AND DECLARE AN EMERGENCY IN ORD. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED NOSE WHEEL STEERING MANIFOLD. OPERATIONAL CHECK GOOD IAW CRJ AMM 32-51-50. AIRCRAFT RETURNED TO SERVICE.

Part: STRUT — UNDERSERVICED (NLG) · airframe 9,337 hrs · 6,674 cycles

ON FLIGHT 4342, CREW REPORTED A STEERING INOP MESSAGE AFTER TAKEOFF DECLARED EMERGENCY IN CMH. MTX SERVICED NLG SHOCK STRUT PER WORKCARD 32-014. PERFORMED GROUND TAXI, NO DEFECTS NOTED AT THIS TIME. AIRCRAFT RETURNED TO SERVICE.

Part: WARNING SYSTEM — MALFUNCTIONED (STEERING SYS) · airframe 9,156 hrs · 6,543 cycles

EMERGENCY DECLARED ON ARRIVAL, STEERING INOP CAUTION DURING GEAR RETRACTION. PERFORMED BITE CHECK OF NWS IAW AMM II CH 32-50-00. NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.

Part: ACM — WARNING MESSAGE (LEFT) · airframe 8,852 hrs · 6,321 cycles

LEFT PACK AUTO CAUTION MESSAGE ON EICAS ALONG WITH SMOKE IN THE COCKPIT. ISSUED MEL 21-12 FOR LT PACK. REMOVED AND REPLACED LEFT AIR CYCLE MACHINE IAW AMM 21-51-08. MEL ITEM RESTORED. AIRCRAFT RETURNED TO SERVICE.

Part: UNKNOWN — SMOKE (A/C DUCT) · airframe 8,360 hrs · 5,954 cycles

ON TAXI SMOKE NOTICED COMING FROM AIR CONDITIONING DUCT, APPLIED SMOKE PROCEDURES AND SMOKE STOPPED. ISSUED MEL 21-13.

Part: POWER SUPPLY — FAILED (EMERGENCY LIGHTS) · airframe 8,260 hrs · 5,899 cycles

ALL EMERGENCY LIGHTS INOPERATIVE. REMOVED AND REPLACED ALL FOUR EMERGENCY POWER SUPPLIES IAW CRJ AMM 33-51-17. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.

Part: WINDOW — CRACKED (COCKPIT) · airframe 9,554 hrs · 6,847 cycles

ON FLIGHT 4468, CREW REPORTED FIRST OFFICERS SIDE WINDOW CRACKED IN FLIGHT. CREW DECLARED EMERGENCY. NO PRESS ISSUES NOTED CREW USED COCKPIT MASKS. MASKS NOT DROPPED IN CABIN AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED FIRST OFFICERS SIDE WINDOW. AIRCRAFT RETURNED TO SERVICE.

Part: BATTERY PACK — DISCHARGED (EMERGENCY LIGHT)

CREW REPORTS ON PRE-FLIGHT EMERGENCY LIGHTS WILL NOT TEST. FOUND EMERGENCY LIGHT SWITCH LEFT IN THE ON POSITION. REPLACED BATTERY PACK NR 1,2,3, AND 4, IAW CRJ700 MM 33-50-17. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. SN 1) 85317 2) 85318 3) 85593 4) 85640. (SW21200501047)