N154SY

Part: NONE — NONE (NONE) · airframe 19,955 hrs · 11,682 cycles

COMPLY WITH SCHEDULED MAINTENANCE CODE: RA79817-ETD2022-170-024861 N154SYMXCODEID66983-PR - TEMPORARY REPAIR LOCATED AT 3€™Â€™ AFT OF FR86, 3.5€™Â€™ INBOARD OF STGR27R OR OUTBOARD SIDE OF STGR28R WITH THE FOLLOWING DIMENSIONS W= 2.1" AND L=2.3" AND 0.019" AT THE DEEPEST POINT IS VALID FOR 3500FC PER ETD 2022-170-024861 REV C DATED 3/29/2023, PERMANENT REPAIR DUE BY TAC 11722. (SEE CP 25257866 FOR ORIGINAL DISCREPANCY.), PART NUMBER: - , SERIAL NUMBER: 17000556, POSITION: (C-CHECK RO 2/2/2024) REMOVED DAMAGE AND INSTALLED EXTERNAL SKIN DOUBLER PER ETD2022-170-024861 REVE. THIS IS A PERMANENT REPAIR AND CLEARS DMI. ADDITIONAL WEIGHT IS 217.8G. THIS DOES NOT EFFECT WEIGHT AND BALANCE TO ACFTPERFORM EXTERNAL LOW FREQUENCY EDDY CURRENT (*) NDT PART 6 TASK 51-06-00-250-806-A THRESHOLD OF 20,000 FCOR 26,600 FH, WHICHEVER OCCURS FIRST, NEXT REQUIRED INSPECTION IS AT 19,400 FC OR 25,802 FH, WHICHEVER OCCURS FIRST .

Part: SEAT TRACK — DAMAGED (UNKNOWN) · airframe 19,375 hrs · 11,277 cycles

THE SEAT FLOOR TRACK AT SEATS 11B & 11C ARE DAMAGED. (FILE CLOSED) REMOVED AND REPLACED THE SEAT FLOOR TRACK AT SEATS 11B & 11C IN REF TO AMM 25-21-11.

Part: UNKNOWN — SMOKE · airframe 18,463 hrs · 10,600 cycles

FLIGHT ATTENDANTS SAW SMOKE IN CABIN ON DOWNWIND. SHORTLY AFTER PACK 2 FAIL CAUTION MESSAGE CAME UP. QRH WAS PERFORMED MESSAGE WENT AWAY. ON LANDING PACK 2 FAIL MESSAGE CAME BACK ON. CORRECTIVE ACTION: REF CP 26510786 FOR TROUBLESHOOTING.REF CP 26510772 FOR STATIC TORQUE CHECK.REF CP 26511340 FOR RH ACM REMOVAL.REF CP 26511328 FOR RH ACM INSTALLATION AND OPS CHECKS.NO SMOKE NOTED DURING RH ACM OPERATION.

Part: BEAM — CORRODED (FWD CARGO DOOR) · airframe 13,003 hrs · 7,266 cycles

FWD CARGO DOOR HORIZONTAL CLOSE OUT BEAM CORRODED. C-CHECK RO 12/27/2020. REMOVED AND REPLACED FWD CARGO DOOR HORIZONTAL CLOSE OUT BEAM, IAW AMM TORQUE ID HG2-61285 CAL DUE DATE 7-22-21.

Part: FLOORBEAM — CORRODED (FRAME 89) · airframe 13,003 hrs · 7,266 cycles

CORROSION AFT WET AREA FLOOR BEAM CORRODED FRAME 89. C-CHECK RO 12/27/2020. REMOVED AND REPLACED AFT WET AREA RT FLOOR BEAM FRAME 86/89, REF SRM.

Part: FLOOR SUPPORT — CORRODED (CABIN) · airframe 13,003 hrs · 7,266 cycles

CORROSION AFT WET AREA RT SIDE FLOOR SPLICE CORRODED FRAMES 89/90. C-CHECK RO 12/27/2020. REMOVED AND REPLACED FLOOR SPLICE BETWEEN FRAMES 89-90 (RT SIDE), REF SRM.

Part: NUT PLATE — CORRODED (CARGO DOOR SEAL) · airframe 13,003 hrs · 7,266 cycles

FWD CARGO DOOR FWD LOWER SEAL DEPRESSOR NUTPLATE CORRODED, AS MAKRED. C-CHECK RO 12/27/2020. REMOVED AND REPLACED FWD CARGO DOOR FWD LOWER SEAL DEPRESSOR, REF E175 AMM. SEE CONTINUATION CARD FOR WORK PERFORMED.

Part: SEAT TRACK — CORRODED (ZONE 200) · airframe 13,003 hrs · 7,266 cycles

FWD WET AREA, CORROSION FOUND ON RT SEAT TRACK BETWEEN FR 13-14, AS MARKED. C-CHECK RO 12/27/2020. REMOVED AND REPLACED FWD WET AREA RT SEAT TRACK FR 12-20, REF EMB SRM.

Part: GUSSET — CORRODED (FRAME 90) · airframe 13,003 hrs · 7,266 cycles

AFT WET AREA, CORROSION FOUND ON RT GUSSET PLATE AT FR 90. LOCATION=Y+10.748". C-CHECK RO 12/27/2020. REMOVED AND REPLACED RT GUSSET PLATE AT FRAME 90, Y+10.748". AFT WET AREA, REF SRM.

Part: GUSSET — CORRODED (FRAME 90) · airframe 13,003 hrs · 7,266 cycles

AFT WET AREA, CORROSION FOUND ON OUTBOARD RT GUSSET PLATE AT FR 90, AS MARKED. C-CHECK RO 12/27/2020. REMOVED AND REPLACED AFT WET AREA OUTBOARD RT GUSSET PLATE AT FR 90. RESTORED SURFACE PROTECTION REF SRM AND CPM.

Part: NUT PLATE — CORRODED (CARGO DOOR SEAL) · airframe 13,003 hrs · 7,266 cycles

FWD CARGO DOOR AFT LOWER SEAL DEPRESSOR NUTPLATES CORRODED, AS MARKED. C-CHECK RO 12/27/2020. REMOVED AND REPLACED FWD CARGO DOOR AFT LOWER SEAL DEPRESSOR, REF EMB175 AMM.

Part: NUT PLATE — CORRODED (CARGO DOOR SEAL) · airframe 13,003 hrs · 7,266 cycles

FWD CARGO DOOR CENTER LOWER SEAL DEPRESSOR NUTPLATES CORRODED, AS MARKED. C-CHECK RO 12/27/2020. REMOVED AND REPLACED FWD CARGO DOOR CENTER LOWER SEAL DEPRESSOR, REF EMB SRM.

Part: SPAR — CRACKED (RT WING) · airframe 13,003 hrs · 7,266 cycles

RT WING FRONT SPAR CRACKED AT TIP. C-CHECK RO 12/27/2020. REMOVED AND REPLACED RT WING SPAR I WITH NEW PART FROM FACTORY. NO CHANGE TO WEIGHT AND BALANCE, REF EMB175 SRM.

Part: POWER SUPPLY — INOPERATIVE (CABIN) · airframe 43,725 hrs · 22,310 cycles

AFT CABIN EMERGENCY LIGHTS INOPERATIVE. REMOVED AND REPLACED AFT CABIN POWER SUPPLY AND BATTERY PACK, OPERATIONAL CHECKS GOOD.

Part: POWER SUPPLY — INOPERATIVE (CABIN) · airframe 43,718 hrs · 22,307 cycles

DURING A MAINTENANCE LINE CHECK, THE AFT EMERGENCY LIGHT POWER SUPPLY FAILED. REMOVED AND REPLACED THE AFT EMERGENCY LIGHT POWER SUPPLY.

Part: SLIDE — FAILED (PAX DOOR) · airframe 43,066 hrs · 22,030 cycles

DURING A ROUTINE MAINTENANCE CHECK, THE R4 DOOR SLIDE WAS CHECKED FOR FOR PROPER INFLATION AND SERVICIABILITY. THE SLIDE DID NOT STAY INFLATED AND SHOWED SIGNS OF DRY ROT ON THE UNDERSIDE OF THE SLIDE, AS WELL AS A SPLIT IN THE MIDDLE OF THE SLIDE PATH. THE SLIDE WAS REMOVED AND REPLACED IAW MM 25-61-07.

Part: LINE — RUPTURED (HYDRAULIC SYS) · airframe 43,063 hrs · 22,028 cycles

AFTER TAKEOFF FROM PVR, THE LANDING GEAR HANDLE WOULD NOT MOVE FROM THE DOWN POSITION. THE CREW RETURNED TO POINT OF ORIGIN. A HYDRAULIC LINE WAS FOUND RUPTURED ON THE LT MLG BOOGIE TRIM CYLINDER. THE HYDRAULIC LINE WAS REMOVED AND REPLACED WITH A TEMPORARY LINE. A FLEX LINE REPAIR WAS INSTALLED ON 6/6/00 IN MSP.

Part: LIGHT — INOPERATIVE (ROW 15 - 18) · airframe 42,584 hrs · 21,847 cycles

DURING A LINE MAINTENANCE CHECK, THE EMERGENCY PATH LIGHTING BETWEEN RIGHT HAND ROWS 15 TO 18 WAS FOUND TO BE INOPERATIVE. THE EMERGENCY PATH LIGHTING FROM RIGHT HAND ROWS 15 TO 18 WAS REMOVED AND REPLACED. OPERATIONALLY CHECKED GOOD IAW MM 335211.

Part: BULB — FAILED (ROW 6)

DURING A LINE MAINTENANCE CHECK, AN EMERGENCY TRACK LIGHT BY SEAT ROW 6 WAS FOUND TO BE INOPERATIVE. REMOVED AND REPLACED THE LIGHT BULB IN THE EMERGENCY TRACK BY SEAT ROW 6 RIGHT SIDE. OPERATIONALLY CHECKS GOOD.

Part: LIGHT — INOPERATIVE (EMER EXIT)

DURING A LINE MAINTENANCE CHECK THE FORWARD CABIN OVERWING EMERGENCY EXIT LIGHTS WERE FOUND TO BE INOPERATIVE. REMOVED AND REPLACED BATTERY ASSEMBLY AND FOUND A SHORT IN THE WIRING IN THE RIGHT SIDEWALL MID CABIN. OPERATIONALLY CHECKS GOOD.

Part: SWITCH — FAILED (CABIN)

DURING A HEAVY MAINTENANCE VISIT, DURING COMPLETION OF A CABIN LEAK CHECK THE ALTITUDE WARNING HORN FAILED TO GO OFF WHEN THE CABIN ALTITUDE REACHED 12,000 FT. REMOVED AND REPLACED THE CABIN ALTITUDE SWITCH AND THE SYSTEM OPERATIONALLY CHECKS GOOD IAW DC10 MM 213303.

Part: ANGLE — CORRODED (BS 567-595)

DURING A HEAVY MAINTENANCE CHECK, THE 'L' ANGLE AT STATION 567 TO 595 AT LONGERON 44L WAS FOUND TO HAVE CORROSION AND MATERIAL LOSS WAS GREATER THAN 20 PERCENT THE ORIGINAL THICNESS WAS .090 AND FOUR AREAS AFTER WERE .060 AND .074 AND .072 AND .073. THE SUBJECT CORROSION WAS REMOVED AND BLENDED 'L' ANGLES WERE FABRICATED AND INSTALLED IAW DC10 SRM 53-10-00, 53-00-01 SCA EO 5356841 AND DIMENSION EA DC10 5310 0027.

Part: SPAR — CRACKED (LT HORIZ STAB)

DURING A HEAVY MAINTENANCE CHECK, THE LEFT HORIZONTAL STABILIZER OUTBOARD SECTION UPPER SPAR CAP FORWARD WAS FOUND CRACKED AT THE FORWARD CLOSING RIB PLANE THE CRACK WAS APPROXIMATELY 4.40 INCHES WHICH EXCEED ALLOWABLE LIMITS PER SB DC10 55-24. THE SUBJECT SPAR CAP WAS REMOVED, A REPAIR CAP WAS FABRICATED AND INSTALLED IAW SRM 55-20-00 FIG 8 VOL I AND SCA EO 5556711.

Part: SENSOR — MISINSTALLED (LT MLG)

DURING A HEAVY MX CHECK TEST FLT, THE LT MAIN GEAR UNSAFE RED LIGHT ILLUM WHILE ROTATING AND EXTINGUISHED IN FLIGHT. THE CREW TROUBLESHOT AND RETURNED TO POINT OF ORIGIN. THE FLT CREW VERIFIED THE DOWN POSITION WITH THE VIEWING PORTS, BRIEFED THE PASSENGERS AND INFORMED THE TOWER. CONDUCTED APPROACH AND REQUESTED A VISUAL VERIFICATION FROM THE TOWER OF THE DOWN POSITION OF THE SUBJECT GEAR. LANDED ON THE SECOND APPROACH WITHOUT INCIDENT. THE PROXIMITY SENSOR FOR DOWN AND LOCK FOR THE LT MAIN GEAR WAS INSTALLED INCORRECTLY. THE SENSOR WAS REINSTALLED IAW SRM 326103, OPS CHECK OK.

Part: SWITCH — FAILED (CABIN OXYGEN SYS)

DURING A HEAVY MAINTENANCE CHECK, 2 ANEROID SWITCHES FOR THE PASSENGER OXYGEN SYSTEM FAILED TEST FOR SCA WORK CARD X1036. THE SUBJECT ANEROID SWITCHES 2 WERE REMOVED AND REPLACED PER MM 352102, OPERATION CHECK WAS GOOD.

Part: SKIN — CHAFED (RT WING)

DURING A HEAVY MAINTENANCE CHECK, THE RIGHT LEADING EDGE SKIN ARB1074 WAS FOUND TO BE CHAFED AT STA XOS 551 TO XOS 555 WITH .043 REMAINING OF ORIGINAL THICKNESS OF .063. THE SUBJECT LEADING EDGE WAS REPAIRED PER SRM 571000 FIG 15 AND EO 57-5678-1.

Part: BATTERY PACK — DISCHARGED (ROW 8-15)

DURING A HEAVY MAINTENANCE CHECK, THE EMERGENCY PATH LIGHTING WAS FOUND TO BE INOPERATIVE FROM SEAT 8L TO 15L AND 8R TO 15R. REMOVED AND REPLACED THE BATTERY PACK PER MEXICANA EO 1033014, OPERATIONAL CHECK GOOD.

Part: SUPPORT — CRACKED (BS 1902)

DURING A HEAVY MAINTENANCE CHECK, AFT GALLEY FLOOR SUPPORT AT STA 1902 WAS FOUND TO BE CORRODED ON UPPER AND LOWER SURFACES RHX=8 AND BARE METAL X=1 TO X=23 CRACKS WERE FOUND AT FOOT ATTACHMENTS. FABBED NEW FLOOR SUPPORT INSTALLED PER SRM 513501.

Part: SUPPORT — CORRODED (BS 1910)

DURING A HEAVY MAINTENANCE CHECK, AFT GALLEY FLOOR SUPPORT AT STA 1910 WAS FOUND TO BE CORRODED BETWEEN X=27.5 AND X=MINUS 27.5 RT. REMOVED CORROSION FOUND TO BE OUT OF LIMITS FABBED STRAP FOR FLOOR PANEL SUPPORT TREATED PRIMED AND INSTALLED PER SRM REFS 512101 537000 FIG 18 SHEET 1 AND 573501.

Part: SUPPORT — CRACKED (BS 1986)

DURING A HEAVY MAINTENANCE CHECK, 2EA FLOOR SUPPORTS STA Y=1986 CL=0 AND X+27.5 ARE CRACKED AT INBD ENDS AND ALSO WERE FOUND CORRODED. REMOVED FABRICATED ALODINED PRIMED AND INSTALLED FLOOR SUPPORTS 2EA PER SRM 511000 512101 AND 513000.

Part: SENSOR — FAILED (RIGHT)

DURING A LINE MAINTENANCE CHECK, THE RIGHT STALL WARNING FAILED THE SELF TEST. REMOVED AND REPLACED THE ANGLE OF ATTACK SENSOR IAW MM 223301. SYSTEM OPERATIONALLY CHECKS GOOD.

Part: COALESCER — CONTAMINATED (NR 3 PACK)

DURING CLIMB, CABIN FILLED WITH SMOKE. COMPLIED WITH COM AND SMOKE STOPPED WHEN NR 2 PNEUMATIC SUPPLY AND NR 2 PACK SELECTED TO OFF. DIVERTED AIRCRAFT TO ORD FOR A PRECAUTIONARY LANDING. FOUND NR 3 ENGINE WITH NR 3 PACK ON CAUSING OIL FUMES IN THE CABIN AT 91 PERCENT N1 FAN SPEED. FOUND OIL IN THE NR 3 PACK COALESCER BAG. REMOVED AND REPLACED THE NR 3 PACK COALESCER BAG AND OPERATED ENGINES AT VARIOUS POWER SETTINGS WITH PACKS RUNNING. NO ODOR OR SMOKE NOTED.

Part: SMOKE DETECTOR — NO TEST (CARGO COMPT)

DURING A LINE MAINTENANCE CHECK, THE NUMBER 4 CARGO SMOKE DETECTOR DID NOT TEST. REMOVED AND REPLACED THE SMOKE DETECTOR, OPERATIONALLY CHECKED GOOD.

Part: POWER SUPPLY — INOPERATIVE (CABIN)

DURING A LINE MAINTENANCE CHECK, THE MID CABIN EMERGENCY LIGHTING POWER SUPPLY FAILED SELF TEST. REMOVED AND REPLACED MID CABIN EMERGENCY LIGHTING (OVERHEAD) POWER SUPPLY AND BATTERY. EMERGENCY LIGHTING BITE TESTS GOOD AND OPERATIONALLY CHECKS NORMAL.

Part: BATTERY — DISCHARGED (CABIN)

DURING A LINE MAINTENANCE CHECK, THE EMERGENCY LIGHT TEST FROM THE COCKPIT FAILS TEST. REMOVED AND REPLACED BOTH BATTERY CHARGER UNIT AND BATTERY IN AFT POSITION. SYSTEM OPERATIONALLY CHECKS NORMAL.