N681BR

Part: CONNECTOR — DISCONNECTED (EMERGENCY LIGHTS) · airframe 18,394 hrs · 17,510 cycles

EMERGENCY LIGHT INOPERATIVE, WIRE PULLED OUT OF CONNECTOR. REPAIRED LIGHT IAW ECSPM 20-17-00. OPS CHECKED IAW AMM 33-51-00-710-801. NO DEFECTS NOTED.

Part: LIGHT — MISINSTALLED (CABIN) · airframe 18,394 hrs · 17,510 cycles

EMERGENCY LIGHT AT SEAT 8CD IN WRONG POSITION, SHOULD HAVE SQUARES NOT ARROWS. RELOCATED RT TRACK IN THE RT CORRECT POSITION IAW 33-51-0101.

Part: SILL — CORRODED · airframe 18,394 hrs · 17,510 cycles

FOUND CORROSION ON SERVICE DOOR SILL. CORROSION ON SILL ANGLE WAS FOUND TO BE OUT OF ALLOWABLE LIMITS OF SRM TR 53-27. LOCATED AND DRILLED FASTENER HOLES IN SERVICEABLE SERVICE DOOR SILL ANGLE IAW SRM 51-40-11. REMOVED SERVICE DOOR SILL ANGLE IAW SRM 51-42-06, SRM 51-42-13 AND SRM 51-42-21. INSTALLED NEW SERVICEABLE SERVICE DOOR SILL ANGLE IAW SRM 51-42-06, 51-42-13 AND 51-42-21.

Part: ANGLE — CRACKED (BS 484) · airframe 18,393 hrs · 17,509 cycles

ANGLE CRACKED AT RBL 36, FS 484. REPAIRED IAW REO 601R-53-41-059.

Part: INTERCOSTAL — CORRODED (BS 484) · airframe 18,393 hrs · 17,509 cycles

ANGLE CRACKED AT RBL 27, FS 484.00 AND AT LBL 36, FS 484.00. REPAIRED INTERCOSTALS COMPLETED IAW REO 601R-53-41-059.

Part: POST — CRACKED (BS 409) · airframe 18,393 hrs · 17,509 cycles

FOUND FS 409.00+128 VERTICAL POST LBL 18 OTBD SIDE HAS INDICATION NOTED AT AFT FLANGE RADIUS WL 69.0 APPROX .3" IN LENGTH 50 PERCENT FSH. FAILED NDT INSPECTION. REMOVED VERTICAL POST ASSY COMMON TO FS 409.00+128, LBL 18 IAW SRM 51-42-06. INSTALLED NEW SERVICEABLE POST IAW REO 601R-53-41-889. C/W REO 601R-53-41-889.

Part: ANGLE — CRACKED (BS 484) · airframe 18,393 hrs · 17,509 cycles

ANGLE CRACKED AT FS 484.00 AT LBL 27. R & R CRACKED ANGLE AT FS 484.00 NR LBL 27 IAW SRM 51-42-21.

Part: POST — CRACKED (BS 409) · airframe 18,393 hrs · 17,509 cycles

FOUND FS 409.00+128 VERTICAL POST RBL 18 INBD SIDE HAS INDICATION NOTED AT AFT FLANGE RADIUS WL 69.0 APPROX .3" IN LENGTH 50 PERCENT FSH. FAILED NDT INSPECTION. REMOVED VERTICAL POST IAW SRM 51-42-06-00. INSTALLED NEW SERVICEABLE NEW POST IAW REO 601R-53-41-889.

Part: COVER — MISSING (EMERGENCY LIGHT) · airframe 17,776 hrs · 16,823 cycles

EMERGENCY EXIT SIGN COVER AT SERVICE DOOR IS MISSING. REPLACED COVER IAW AMM 33-51-13.

Part: DOOR — BINDING (MAIN PAX) · airframe 17,730 hrs · 16,774 cycles

CABIN PASSENGER DOOR DIFICCULT TO OPEN. COMPLIED WITH SERVICING OF PASSENGER DOOR IAW AMM 52-11-00 COULD NOT DUPLICATE FAULT AT THIS TIME.

Part: PLACARD — DETERIORATED (PAX DOOR) · airframe 17,676 hrs · 16,719 cycles

PAX DOOR EXIT PLACARD DETERIORATED. R & R PAX DOOR EXIT PLACARD IAW AMM 11-30-00.

Part: BULKHEAD — CRACKED (BS 621) · airframe 17,510 hrs · 16,525 cycles

CRACK INDICATION NOTED AT FS 621 REAR PREASSURE BULKHEAD WEB FWD FACE AT LBL 27.50 WL 129 AT THE TOP OF THE CARGO DORO AFT TRACK APPROX .10" LENGTH 50 PERCENT FULL SCREEN HEIGHT. FAILED NDT.

Part: BULKHEAD — CRACKED (BS 621) · airframe 17,510 hrs · 16,525 cycles

CRACK INDICATION NOTED AT FS 621 REAR PRESSURE BULKHEAD WEB FWD FACE AT LBL 27.50 WL 129 AT THE TOP OF THE CARGO DOOR AFT TRACK APPROX .10 IN LENGTH 50 PERCENT FULL SCREEN HEIGHT. FAILED NDT.

Part: BULKHEAD — CRACKED (BS 559) · airframe 17,510 hrs · 16,525 cycles

CRACK INDICATIONS NOTED AT THE FS 559 BULKHEAD AT RBL 9, WL 54.10 APPROX .200" L, 55 PERCENT FSH AND RBL 18 WL 59.10 APPROX .200" L 50 PERCENT FULL SCREEN HEIGHT. FAILED NDT. REPAIRED IAW REO 601R-53-41-260 & REO 601R-53-41-260 REV E.

Part: LAMP — BURNED OUT (EMERGENCY LIGHT) · airframe 17,392 hrs · 16,387 cycles

AFT MOST CABIN CEILING EMERGENCY LIGHT INOPERATIVE. RELAMPED AFT MOST CABIN CEILING EMERGENCY LIGHT IAW AMM 33-51-16.

Part: SELECTOR VALVE — LEAKING (NLG DOOR) · airframe 17,139 hrs · 16,126 cycles

HYDRAUICS 3 LOW PRESSURE ILLUMINATED ON FINAL, COMPLIED WITH QRH & AN EMERGENCY DECLARED. R & R NLG DOOR SELECTOR VALVE IAW AMM 32-22-20 AND IPC 32-22-20 ITEM 5B.

Part: LIGHT — DAMAGED (CABIN) · airframe 16,904 hrs · 15,869 cycles

FOUND BASE OF EMERGENCY LIGHT ASSY FLOOR LEVEL AT FWD ENTRY DAMAGED. R & R EMERGENCY EXIT ASSY FLOOR LEVEL AT FWD ENTRY FLOOD LIGHT IAW AMM 33-51-10.

Part: DOOR — BINDING (MAIN PAX) · airframe 16,463 hrs · 15,366 cycles

MAIN CABIN DOOR WILL NOT OPEN FROM INSIDE CABIN. OPS CHECKED DOOR. NO DEFECT FOUND. OK FOR SERVICE IAW AMM 52-10-00.

Part: DOOR — BINDING (MAIN PAX) · airframe 16,456 hrs · 15,359 cycles

MAIN CABIN DOOR IS DIFFICULT TO OPEN AFTER PARKING. PERFORMED OPS TEST OF PAX DOOR IAW AMM 52-11-00, DOOR OPERATED NORMALLY.

Part: HANDLE — BINDING (MAIN PAX DOOR) · airframe 16,385 hrs · 15,287 cycles

MAIN CABIN DOOR HANDLE STICKS WHEN TRYING TO CLOSE OR OPEN DOOR HARD TO CLOSE AND HARD TO OPEN DOOR. OPS CHECK GOOD IAW CRJ-200-AMM 52-11-00. (CLOSED)

Part: DOOR — BINDING (MAIN PAX) · airframe 16,327 hrs · 15,231 cycles

F/A REPORTS MAIN CABIN DOOR DIFFICULT TO OPEN AND CLOSE. HANDLE IS STICKEY AND DIFFICULT TO OPERATE. COMPLIED WITH INSP AND OPS CHECK OF PAX DOOR NO DEFECTS NOTED DOOR OPERATE NORMAL INOPEN/CLOSED IAW AMM52-11-00.

Part: DOOR — BINDING (MAIN PAX) · airframe 16,316 hrs · 15,217 cycles

F/A REPORT MAIN CABIN DOOR AS DIFFICULT TO CLOSE HANDLE DOWN. ALSO HARD TO OPEN. LUBRICATED LOCK PINS & GUIDES. OPENED & CLOSED DOOR SEVERAL TIMES. OPS CHECKED GOOD IAW AMM 52-11-00.

Part: LATCH — BINDING (PAX DOOR) · airframe 16,197 hrs · 15,100 cycles

CABIN ENTRY DOOR DIFFICULT TO OPEN. LATCH MECHINISM APPEARS OUT OF ADJUSTMENT. OPS CHECK PAX DOOR. (CLOSED)

Part: DOOR — LACK OF LUBE (MAIN PAX) · airframe 16,109 hrs · 15,006 cycles

PAX DOOR HARD TO OPEN. LUBED PAX DOOR IAW AMM 12-20-52. OPS CHECKED GOOD IAW AMM 52-11-00.

Part: PUSHROD — OUT OF ADJUST (PAX DOOR) · airframe 16,069 hrs · 14,962 cycles

PASSENGER DOOR IS DIFFICULT TO OPEN OR CLOSE. ADJUSTED THE PUSH ROD ASSY BETWEEN THE UPPER PIVOT LEVER AND THE PIVOT LEVER ON THE TORQUE TUBE ASSEMBLY TO ALIGN THE RIGGING MARKS. OPS AND FUNCTIONAL CHECKS GOOD IAW AMM 52-11-25.

Part: DOOR — BINDING (MAIN PAX) · airframe 15,988 hrs · 14,874 cycles

F/A CANNOT OPEN PASSENGER DOOR. CLEANED AND LUBED AIRSTAIR DOOR LINKAGE. OPS CKD GOOD IAW AMM 52-11-00.

Part: CAM — LACK OF LUBE (PAX DOOR HANDLE) · airframe 15,611 hrs · 14,426 cycles

F/A REPORTS PASSENGER DOOR HANDLE LOCK. UNLOCK BINDING. LUB CAMS ON TOP OF DOOR (CLOSED) IAW AMM 52-11-25. OPS CHECK GOOD, ACFT OK FOR SERVICE. (CLOSED)

Part: LOCK — LACK OF LUBE (PAX DOOR) · airframe 15,604 hrs · 14,419 cycles

F/A REPORTS PASSENGER DOOR HANDLE LOCK/UNLOCK BINDING. ACCOMPLISHED LUBE OF PAX DOOR LOCKING MECHANISM, OPS CHECK GOOD AMM 52-11-43. (CLOSED)

Part: BULB — INOPERATIVE (EMERGENCY LIGHT) · airframe 14,199 hrs · 12,800 cycles

RT OVERWING EMERGENCY LIGHT INOP. R & R EMERGENCY LIGHT BULB IAW AMM 33-51-21 OP CK GOOD. ITEM: 1, R & R EMERGENCY LIGHT BULB IAW AMM 33-51-21. OPS CK GOOD.

Part: PRIORITY VALVE — FAILED (MLG) · airframe 13,718 hrs · 12,225 cycles

AFTER TAKEOFF, RECEIVED A GEAR DISAGREE MSG ALONG WITH VIOLENT SHAKING IN COCKPIT THAT FELT LIKE WAKE TURBULENCE. COMPLIED W/ QRH, DECLARED AN EMERGENCY AND LANDED W/O INCIDENT.

Part: BULKHEAD — CORRODED (BS 621) · airframe 13,696 hrs · 12,193 cycles

FS 621.00, PRESSURE BULKHEAD WEB FWD FACE HAS A 90 PERCENT FSH HFEC INDICATION NOTED APPROX 0.2" LONG AT THE BOTTOM INBD CORNER OF THE LINTEL FITTING. FAILS NDT AT THIS TIME. REPAIR PER EC/TC REO 601R-53-61-1230 HAS BEEN COMPLETE AND THE REPAIR C/W THE REQUIREMENTS OF EC/TC AND REO 610R-53-61-1230 REV D.

Part: BULKHEAD — CRACKED (BS 202) · airframe 13,696 hrs · 12,193 cycles

BS 202.75 PRESSURE BULKHEAD CRACKED AT BRAKE CABLE FEED THROUGH HOLE. C/W EC/TC REO 601R-53-11-563 AND REO 601R-53-11-563 REV.

Part: INTERCOSTAL — CRACKED (FUSELAGE) · airframe 13,696 hrs · 12,193 cycles

UPON DISASSEMBLY OF PREVIOUSLY REWORKED EXTERNAL POWER RECEPTACLE SUPPORT MEMBER, FOUND AFT INTERCOSTAL PN 600-33283-35 TO BE CRACKED INBD TOP FASTENER HOLE. DRILLED OFF, REMOVED OLD EXTERNAL POWER RECEPTACLE SUPPORT MEMBER AFT INTERCOSTAL PART NR 600-33283-35 BY REMOVING SOLID RIVETS, RIVETS AND LOCK FASTENERS IAW SRM 51-42-06, 51-42-10 AND 51-42-21. LOCATED AND DRILLED SUPPORT MEMBER INTERCOSTAL IAW SRM 51-42-06 STEP 7. INSTALLED INTERCOSTAL IAW SRM 51-42-06 AND 51-42-06.

Part: FLOOR SUPPORT — CRACKED (BS 621) · airframe 13,696 hrs · 12,193 cycles

FLOOR SUPPORT STRUCTURE FS 621.0 LT SIDE IS CRACKED. REPAIR OF THE DAMAGE PORTIONS OF ANGLE 601R35031-239 IS COMPLETED IAW REO 601R-53-61-117 AND MEETS WITH ALL ITS REQUIREMENTS.

Part: DRAG ANGLE — CRACKED (PAX DOOR) · airframe 13,696 hrs · 12,193 cycles

PAX DOOR AFT DRAG ANGLE CRACKED. COMPLIED WITH EC/TC REO 601R-52-11-1788, REO 601R-52-11-1788.

Part: FLOOR SUPPORT — CORRODED (BS 574-621) · airframe 13,696 hrs · 12,193 cycles

FLOORBEAM CAP AT LBL 27 FROM FS 621 TO FS 574 IS CORRODED. FLOORBEAM CAP AT LBL 27, STA 574-621. REMOVED FOR REPLACEMENT. REMOVED CAP LBL 27, FS 574 - FS 621 IAW SRM 51-42-06 STEP 11. LOCATED AND DRILLED FLOORBEAM AND LBL 27 FS 569-621. INSTALLED FLOORBEAM CAP AT LBL 27 STA 574-621 IAW REO 601R-53-61-3400. PAINTED FLOORBEAM CAP IAW SRM 51-25-16. REPLACED FLOORBEAM FILLER STRIP. REF AMM 20-21-00-910-801. COMPLIED WITH EC/TC REO 601R-53-61-3400 IAW REO 601R-53-61-3400 REV E.

Part: CONTROLLER — UNCONTROLLABLE (CABIN PRESSURE) · airframe 13,695 hrs · 12,193 cycles

R & R NR 2 CABIN PRESS CONTROLLER IAW AMM 21-31-16. (CLOSED)

Part: PLACARD — DETERIORATED (ESCAPE HATCH) · airframe 13,696 hrs · 12,193 cycles

CREW ESCAPE HATCH EXTEROR SILK SCREENS DETERIORATED/ MISSING. REMOVED DAMAGED SILKSCREENS ON CREW ESCAPE HATCH IAW AMM TASK 11-10-03-000-801 AND APPLIED NEW SILKSCREENS FOR DAMAGED/MISSING ONES IAW AMM TASK 11-10-03-400-801.

Part: ANGLE — CRACKED (BS 621-625) · airframe 13,696 hrs · 12,193 cycles

AFT EQUIPMENT BAY 621-625 OBLIQUE ANGLE CRACKED ON RT SIDE. R & R RT SIDE FS 621-625 OBLIQUE ANGLE IAW SRM 51-42-06.

Part: ANGLE — CRACKED (BS 621-625) · airframe 13,696 hrs · 12,193 cycles

AFT EQUIPMENT BAY, FS 621-625 OBLIQUE ANGLE CRACKED ON LT SIDE.

Part: WIRE — BROKEN (EMERGENCY LIGHT) · airframe 13,696 hrs · 12,193 cycles

FLOOR LEVEL FLOOD LIGHT (EMERGENCY LIGHT) ON WARDROBE HAS BROKEN WIRE AT CONNECTOR. INSTALLED NEW SERVICEABLE CONNECTOR ON EMERGENCY FLOOR LEVER FLOODLIGHT ON WARDROBE IAW ESPM 20-17-10. OPS TEST OF EMERGENCY LIGHTS DUE. OPS TEST OF THE EMERGENCY EXIT LIGHT SYS CHECKS GOOD IAW AMM 33-51-00-710-801.

Part: LIGHT — INOPERATIVE · airframe 13,278 hrs · 11,702 cycles

2 RT FUSELAGE EMERGENCY LIGHTS INOP.

Part: DOOR — STUCK (PAX DOOR) · airframe 12,284 hrs · 10,667 cycles

PAX DOOR WILL NOT OPEN / (PASSENGER DOOR POWER ASSIST SYSTEM).

Part: DOOR — BINDING (MAIN ENTRY) · airframe 12,265 hrs · 10,649 cycles

MAIN ENTRANCE DOOR HARD TO OPEN AND GET GREEN INDICATION WHEN CLOSED. FLT 5356 DEL 96 MINS.

Part: DOOR — INOPERATIVE (MAIN PAX) · airframe 12,253 hrs · 10,639 cycles

PASSENGER DOOR WILL NOT LATCH CLOSED. FLT 4980 DEL 112 MINS.

Part: ANCHOR FITTING — CRACKED (PAX DOOR) · airframe 12,100 hrs · 10,507 cycles

PAX DOOR AFT ANCHOR FITTING CRACKED.

Part: BATTERY — UNKNOWN (FLASHLIGHT) · airframe 11,243 hrs · 9,705 cycles

CAPTAINS FLASHLIGHT NEEDS BATTERIES.

Part: STEP — BROKEN (PAX DOOR) · airframe 10,970 hrs · 9,445 cycles

PAX DOOR LOWER STEP BROKEN.

Part: DOOR — STIFF (MAIN PAX)

F/A REPORTS MAIN PAX DOOR OPENS AND CLOSES WITH DIFFICULTY. OPERATED PAX DOOR MULTIPLE TIMES, OPS CK GOOD IAW AMM 52-10-00. (A)

Part: PRIORITY VALVE — MALFUNCTIONED (MLG) · airframe 10,170 hrs · 8,724 cycles

AFTER TAKEOFF, MOVED GEAR HANDLE TO THE UP POSITION (NOSE GEAR DOOR & GEAR DISAGREE) WARNING MESSAGES. NOSE GEAR SHOWING GREEN DOWN & LOCKED. TOUCHED DOWN LESS THAN 300FMP (AIRCRAFT RETURNED TO ATL AFTER TAKEOFF, EMERGENCY DECLARED). FLT 4601 DEL 180 MINS. REMOVED AND REPLACED PRIORITY VALVE IAW CRJ 200 AMM 32-33-15 OPS CHECK OK. (S)

Part: SELECTOR VALVE — MALFUNCTIONED (NLG) · airframe 10,170 hrs · 8,724 cycles

AFTER TAKEOFF RECEIVED A GEAR DISAGREE AND NOSE GEAR DOOR MESSAGE NOSE GEAR FAILED TO RETRACT (AIRCRAFT RETURNED TO FAY AFTER TAKEOFF--EMERGENCY DECLARED). FLT 4640 CX. FOUND CODE D046 ERR IN PSEU (NOSE GEAR RETRACT SOLENOID) (SELECTOR VALVE). REMOVED AND REPLACED NOSE GEAR SELECTOR VALVE IAW M/M 32-33-10. CYCLED GEARS 12X WITH NO DEFECTS, OPS AND LEAKS CHECK GOOD. ACFT OK FOR SERVICE. (S)

Part: PLACARD — WORN (CABIN) · airframe 9,672 hrs · 8,311 cycles

AAR - EXIT PLACARD WORN ON PAX DOOR.

Part: SKIN PANEL — CRACKED (PAX DOOR) · airframe 9,672 hrs · 8,311 cycles

AAR - PAX DOOR STAIRS, FWD SKIN PANEL IS CRACKED IN RADIUS UNDER STEP 832CT.

Part: SKIN PANEL — CRACKED (PAX DOOR) · airframe 9,672 hrs · 8,311 cycles

AAR - PAX DOOR STAIRS, AFT SKIN PANEL IS CRACKED IN RADIUS UNDER STEP 832CT.

Part: ANCHOR FITTING — CRACKED (PAX DOOR) · airframe 9,672 hrs · 8,311 cycles

PASSENGER DOOR FORWARD ANCHOR FITTING IS CRACKED.

Part: ANGLE — CRACKED (FUSELAGE) · airframe 9,672 hrs · 8,311 cycles

RIGHT FS 625 OBLIQUE ANGLE IS CRACKED. REMOVED REQ'D FASTNERS TO RT OBLIQUE ANGLE AT FS 625 DISCARDED. DUPLICATED, LOCATED HOLES, DEBURRED, ALODINED, PRIME, TOPCOATED NEW ANGLE AND INSTALLED WET WITH FASTNERS PER SRM 53-61-17 PG3 51-21-11, 51-25-06, 51-25-16, 51-23-00, AND 51-42-21.

Part: FLAP — MALFUNCTIONED (WING) · airframe 9,212 hrs · 7,919 cycles

RECEIVED FLAPS FAIL MESSAGE AT 0 DEGREES IN FLIGHT. A/C RETURNED TO ATL AFTER T/O. EMERGENCY DECLARED.

Part: FLAP SYSTEM — MALFUNCTIONED (TE FLAPS) · airframe 9,163 hrs · 7,879 cycles

IN CLIMB-OUT AT FL280 W/FLAPS SELECTED 0 RECIEVED A FLAPS FAIL CAUTION MESSAGE. THE FLAP SELECTOR WAS NOT USE, EMERGENCY DECLARED.

Part: BATTERY PACK — INOPERATIVE (CABIN) · airframe 8,775 hrs · 7,544 cycles

NR 3 AND NR 4 EMERGENCY LIGHT BATTERY PACKS INOP.

Part: SKIN — CRACKED (BS 640) · airframe 8,775 hrs · 7,544 cycles

LEFT FS 640.00 BONDED SKIN DOUBLER IS CRACKED. 10-18-07 REPAIRED CRACKED LT BONDED SKIN DOUBLER IAW EC/TC REO 601R-53-61-506.

Part: FLASHLIGHT — INOPERATIVE (COCKPIT) · airframe 7,952 hrs · 6,869 cycles

CAPTAIN`S FLASHLIGHT INOP.

Part: DOOR — STIFF (MAIN PAX) · airframe 7,900 hrs · 6,829 cycles

F/A REPORTS PAX DOOR HARD TO OPEN FROM THE INSIDE.

Part: FLASHLIGHT — INOPERATIVE (CABIN) · airframe 7,410 hrs · 6,452 cycles

FLIGHT ATTENDANT'S FLASHLIGHT INOP.

Part: WARNING SYSTEM — ACTIVATED (THRUST REVERSER) · airframe 6,444 hrs · 5,716 cycles

LEFT REV UNLOCKED MESSAGE IN FLIGHT. FOLLOWED QRH, RETURNED TO ATL. FLT 4826 DEL 156 MINS. IN FLIGHT LT ENG SHUTDOWN, EMERGENCY DECLARED.

Part: DOOR — STUCK (EMERGENCY EXIT) · airframe 5,879 hrs · 5,255 cycles

EMERGENGY EXIT HATCH FOUND TO BE STUCK IN FRAME (WITH PAINT) DUE TO AIRCRAFT REPAINTING. INSPECT ALL EMERGENCY EGRESS POINTS ON AIRCRAFT TO BE SURE THEY ARE FREE OF PAINT OVERSPRAY AND MOVE FREELY (OVERWING EMERGENCY EXITS, PAX DOOR, SERVICE DOOR, CREW ESCAPE HATCH)

Part: WIRE — DISCONNECTED (EMERGENCY LIGHT)

EMERGENCY FLOOR TRACK LIGHTING INOP. RECONNECTED POWER LEADS. OPS CHECK GOOD.

Part: PROXIMITY SENSOR — INOPERATIVE (MLG)

CREW REPORT STATED DURING CLIMB RECEIVED A PROX SYS FAULT STATUS MSG. RESET PER QRH, MSG CLEARED. REMOVED AND REPLACED PSEU. PROX SYSTEM TEST GOOD.

Part: LIGHT — INOPERATIVE (EXTERNAL)

DURING INSPECTION THE LEFT HAND AFT EXTERNAL EMERGENCY LIGHT WAS FOUND INOPERATIVE. THE LIGHT WAS FOUND INOPERATIVE.

Part: CONTROL UNIT — MALFUNCTIONED (HORIZ STAB)

DURING OPERATION OF THE AIRCRAFT THE MACH TRIM SYSTEM DISENGAGED DURING STABILIZER TRIM ACTUATION. THE FAULT WAS TROUBLESHOT TO THE HSTCU AND UNIT WAS REPLACED. AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.