# Service difficulty reports: N480MC A list on [N480MC](https://openairdocs.org/aircraft/N480MC.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. Page 1 of 4 · 151 reports - [SDR UIEA2026090800861](https://openairdocs.org/sdr/UIEA2026090800861.md): Light · faulted · Sep 8, 2026 · N480MC · Boeing 747422 · Emergency Lighting > LEFT CENTER EMERGENCY EXIT SIGN IS ONLY ILLUMINATING 50%. REMOVED & REPLACED LH OVERWING EMERGENCY LIGHT NR 2 AFT LIGHT ASSY IAW AMM 33-51-03 & AIPC 33-51-03-02. OPS CHK GOOD. - [SDR UIEA2025111101296](https://openairdocs.org/sdr/UIEA2025111101296.md): Charger · inoperative · Nov 11, 2025 · N480MC · Boeing 747422 · Emergency Lighting > EMERGENCY EXIT LIGHTS INOP AT MID LAV, L5, 4A, & R5 DOORS. REMOVED & REPLACED BATTERY CHARGER IAW AMM-33-51-01 & AIPC 24-51-00. REMOVED & REPLACED EMERGENCY LIGHT BATTERY AMM 33-51-01 & AIPC 24-31-00. NO FURTHER DEFECTS NOTED. - [SDR UIEA2025101801269](https://openairdocs.org/sdr/UIEA2025101801269.md): Skin · broken · Oct 19, 2025 · N480MC · Boeing 747422 · Fuselage Main, Plate/Skin > EXTERNAL FUSELAGE SKIN SECTION 48 HAS BROKEN PANEL AT RH SIDE BTWN STATION 2618 & 2638(

R/R AIR INTAKE LIP PER SRM 51-40-02 PAR. 5. NO FURTHER DEFECTS NOTED.

) - [SDR UIEA2025101801270](https://openairdocs.org/sdr/UIEA2025101801270.md): Skin · broken · Oct 19, 2025 · N480MC · Boeing 747422 · Fuselage Main, Plate/Skin > EXTERNAL FUSELAGE SKIN SECTION 48 HAS BROKEN PANEL AS RH SIDE BTWN STATION 2618 & 2638(

R/R AIR INTAKE LIP PER SRM 51-40-02 PAR. 5. NO FURHTER DEFECTS NOTED

) - [SDR UIEA2025101801271](https://openairdocs.org/sdr/UIEA2025101801271.md): Skin · broken · Oct 19, 2025 · N480MC · Boeing 747422 · Fuselage Main, Plate/Skin > EXTERNAL FUSELAGE SKIN SECTION 48 HAS BROKEN PANEL AT RH SIDE BTWN STATION 2618 & 2638(

R/R AIR INTAKE LIP PER SRM 51-40-02 PAR. 5. NO FURTHER DEFECTS NOTED.

) - [SDR UIEA2025101801272](https://openairdocs.org/sdr/UIEA2025101801272.md): Skin · broken · Oct 19, 2025 · N480MC · Boeing 747422 · Fuselage Main, Plate/Skin > EXTERNAL FUSELAGE SKIN SECTION 48 HAS BROKEN PANEL AT RH SIDE BTWN STATION 2618 & 2638(

R/R AIR INTAKE LIP PER SRM 51-40-02 PAR. 5. NO FURTHER DEFECTS NOTED

) - [SDR UIEA2025101901273](https://openairdocs.org/sdr/UIEA2025101901273.md): Slide · low pressure · Oct 19, 2025 · N480MC · Boeing 747422 · Escape Slide > LOW PRESSURE ON SLIDE BOTTLES ON UPPER RIGHT DOOR (18332AP) SLIDE PN: 7A1323-114 SN G2230(

R/R SLIDE & OPS CHK OK PER AMM 25-68-00.

) - [SDR UIEA2025101901274](https://openairdocs.org/sdr/UIEA2025101901274.md): Slide · low pressure · Oct 19, 2025 · N480MC · Boeing 747422 · Escape Slide > LOW PRESSURE ON SLIDE BOTTLES ON UPPER LEFT DOOR (18332AP)(

R/R SLIDE & OPS CHK OK IAW AMM 25-68-00.

) - [SDR UIEA2025090601168](https://openairdocs.org/sdr/UIEA2025090601168.md): Light · inoperative · Sep 6, 2025 · N480MC · Boeing 747422 · Emergency Lighting > LEFT U/D DOOR EMERGENCY LIGHT INOP. REMOVED & REPLACED EMERGENCY LIGHT ASSY IAW AMM 33-57-04. OPS CHECK GOOD. REF AIPC 24-31-00-50B. - [SDR UIEA2025022700171](https://openairdocs.org/sdr/UIEA2025022700171.md): Skin · corroded · Mar 1, 2025 · N480MC · Boeing 747422 · Fuselage Main, Plate/Skin > CORROSION ON RH FUSELAGE SKIN AT STA 1702, S-45R.(

1. ACCOMPLISHED WORK SHEET #50030 (SRM 53-00-01-2R-1 REV. 122). 2. CONDITION CHECK NORMAL AND JOB COMPLETED.

) - [SDR UIEA2025022700172](https://openairdocs.org/sdr/UIEA2025022700172.md): Support Fitting · cracked · Mar 1, 2025 · N480MC · Boeing 747422 · Spoilers > CRACK FTG, LH WING #5 SPOILER SUPPORT FITTING ON STA WS 650.00.(

1. ACCOMPLISHED WORK SHEET #50033 (SRM 57-51-13-2R-1 REV 122). 2. CONDITION CHECK NORMAL AND JOB COMPLETED.

) - [SDR UIEA2025022700173](https://openairdocs.org/sdr/UIEA2025022700173.md): Skin · corroded · Mar 1, 2025 · N480MC · Boeing 747422 · Nacelle/Pylon, Plate/Skin > CORROSION ON #4 ENG LH CORE COWL SKIN BETWEEN NSTA 222 AND NSTA 230.(

1. REPAIR THE DAMAGE AREA IAW EI #T2025A54M-196 REV 0 AND REF DWG #314T4210 SH 7 REV-C, 344T4210 SH 8 REV D AND 314T4210 SH 5 REV B. 2. JOB COMPLETED AND CONDITION CHECK NORMAL.

) - [SDR UIEA2025022700174](https://openairdocs.org/sdr/UIEA2025022700174.md): Skin · corroded · Mar 1, 2025 · N480MC · Boeing 747422 · Nacelle/Pylon, Plate/Skin > CORROSION ON #2 ENG LH CORE COWL SKIN BETWEEN NSTA 222 AND NSTA 230.(

1. REPAIR THE DAMAGE AREA IAW EI #T2025A54M-198, REV 0 AND REF DWG #314T4210 SH 20 REV D, 314T4210 SH 18 REV C AND 314T4210 SH 1 REV C. 2. JOB COMPLETED.

) - [SDR UIEA2025022700176](https://openairdocs.org/sdr/UIEA2025022700176.md): Bottle · disconnected · Mar 1, 2025 · N480MC · Boeing 747422 · Passenger/Crew Doors > FND L2 ENTRY EMERGENCY POWER RESERVOIR PRESSURE LINE NOT CONNECTED.(

1. IAW AMM TASK 52-11-06-404-015 REV 112 INSTALL THE PRESSURE LINE. 2. COND CHECK NORMAL.

) - [SDR UIEA2025022700178](https://openairdocs.org/sdr/UIEA2025022700178.md): Lamp · inoperative · Mar 1, 2025 · N480MC · Boeing 747422 · Emergency Lighting > FOUND L/H AISLE EMERGENCY LIGHT INOP BETWEEN SEAT 57 ABC AND 57 DEFG.(

1. IAW AMM 33-51-07-962-001 REV 112 REPLACED EMERGENCY LIGHT LAMP BETWEEN SEAT 57 DEFG L/H AISLE, CONDITION CHECK NORMAL. 2. IAW AMM 33-51-07-962-001 REV 112 PERFORMED LAMP TEST, RESULT W - [SDR UIEA2025022700180](https://openairdocs.org/sdr/UIEA2025022700180.md): Elec Connector · damaged · Mar 1, 2025 · N480MC · Boeing 747422 · Door System Wiring > FOUND L3 DR FWD EMERGENCY EVAC CONNECTOR DAMAGE.(

1. IAW D6-36911 REV BZ & WDM 25-63-12 REV 68 REPLACED L3 DOOR FWD EMERGENCY EVAC CONNECTOR, CONDITION CHECKED NORMAL. 2. IAW AMM 25-63-01-705-001 REV 112 PERFORMED EMERGENCY EVACUATION SIGNAL OPERATIONAL TEST - [SDR UIEA2025022800182](https://openairdocs.org/sdr/UIEA2025022800182.md): Battery Pack · no test · Mar 1, 2025 · N480MC · Boeing 747422 · Emergency Lighting > FOUND EMERGENCY LIGHT GO OFF LESS THAN 15 MIN DURING TEST AT ZONE A RH SIDE (M7916, M7915).(

1. IAW AMM 33-51-04-902-001-001 REV 112 REPLACED EMER LIGHT POWER SUPPLY BATTERY M7916 & M7915 AND PERFORMED POWER SUPPLY TEST, THE RESULT WAS SATISFACTORY.

) - [SDR UIEA2025022800183](https://openairdocs.org/sdr/UIEA2025022800183.md): Elt · no test · Mar 1, 2025 · N480MC · Boeing 747422 · Emergency Locator Beacon > FOUND INCORRECT A/C NUMBER SHOWS DURING ELT TEST.(

IAW EMTEQ 2-22566-908 REV 22APR2011 REPLACED ELT TRANSMITTER AND PFM ELT SYSTEM TEST, RESULT WAS SATISFACTORY.

) - [SDR UIEA2025022800184](https://openairdocs.org/sdr/UIEA2025022800184.md): Light · inoperative · Mar 1, 2025 · N480MC · Boeing 747422 · Emergency Lighting > FOUND EMERGENCY LIGHT INOP AT WING TO BODY AREA (COUNT FROM FWD TO AFT, R/H #3, L/H #2).(

IAW AMM 33-31-03-004-034 & 33-51-03-404-007 REV 112 REPLACED AND TEST THE OVERWING EMERGENCY LIGHT, RESULT WAS SATISFACTORY. - [SDR UIEA2024031400149](https://openairdocs.org/sdr/UIEA2024031400149.md): Warning Message · illuminated · Mar 15, 2024 · N480MC · Boeing 747422 · Aircraft Fuel System > FUEL STAB TRANSFER EICAS CAUTION MSG(

RESET STAB BOOST PUMP CIRCUIT BREAKERS L & R. PERFORMED GROUND TEST OF HORIZONTAL STAB ISOLATION VALVE PER AMM 28-17-00-705-039. TEST PASSED. NO DEFECTS NOTED. OKAY FOR SERVICE.

) - [SDR UIEA2023032900296](https://openairdocs.org/sdr/UIEA2023032900296.md): Unknown · unknown · Mar 29, 2023 · N480MC · Boeing 747422 · Fuselage Main, Plate/Skin > SKIN CRACK FOUND ON AFT LOWER FUSELAGE R/H SIDE AT STA.1720 /Â S46R.(

ACCOMPLISHED FUSELAGE SKIN REPAIR AT LOWER FUSELAGE R/H SIDE STA 1720 / S46R IAW B747-400 SRM 53-00-01-LR-10 REPAIR 10 AND EO #4453C306.

) - [SDR UIEA2023021700131](https://openairdocs.org/sdr/UIEA2023021700131.md): None · none · Feb 17, 2023 · N480MC · Boeing 747422 · Oxygen System > CREW OXYGEN DROPPED FROM 1500-400 PSI IN 7 HOURS(

LEAKING B-NUT FITTING FOUND AT REGULATOR AND RETORQUED IAW AMM 20-51-01, NO CHANGE IN O2 PRESSURE IN 7 HOURS. ULTRASONIC LEAK CHECK COMPLETE, NO LEAKS NOTED. A/C PRESSURIZED, NO LE - [SDR UIEA2022112801202](https://openairdocs.org/sdr/UIEA2022112801202.md): Circuit Card · failed · Nov 28, 2022 · N480MC · Boeing 747422 · Fire Detection > FIRE CARGO FWD EICAS MSG. DID CHECKLIST AND DISCHARGED BOTTLE. R & R AFOLT FWD CARGO PRINTED CIRCUIT CARD IAW AMM 26-10-01. OPS CHECKED GOOD. - [SDR UIEA2022062300647](https://openairdocs.org/sdr/UIEA2022062300647.md): Flap · dented · Jul 1, 2022 · N480MC · Boeing 747422 · Trailing Edge Flaps > RHW T/E I/B MID FLAP L/E FOUND DENT(PERFORMED COMPOSITE HOTBOND REPAIR AS PER SRM 51-70-07 PAR.5A) - [SDR UIEA2022062300648](https://openairdocs.org/sdr/UIEA2022062300648.md): Flap · delaminated · Jul 1, 2022 · N480MC · Boeing 747422 · Trailing Edge Flaps > RHW T/E I/B AFT FLAP T/E LOWER SURFACE FOUND DELAMINATION(PERFORMED COMPOSITE HOTBOND REPAIR AS PER SRM 51-70-07 PAR.5A) - [SDR UIEA2022062400651](https://openairdocs.org/sdr/UIEA2022062400651.md): Spoiler · delaminated · Jul 1, 2022 · N480MC · Boeing 747422 · Spoilers > LHW #6 SPOILER LWR SURFACE I/B UPR CORNER DELAMINATED(PERFORMED METAL HOTBOND REPAIR AS PER SRM 51-70-10 REPAIR4 /FIG202) - [SDR UIEA2022062700671](https://openairdocs.org/sdr/UIEA2022062700671.md): Skin · cracked · Jul 1, 2022 · N480MC · Boeing 747422 · Auxiliary Power Unit (APU) Doors > APU R/H DOOR NO.2 LATCH (COUNT FRONT FWD) EXTERIOR SKIN CUTOUT FOUND CRACKED (NO,2 LATCH CUTOUT SKIN REPAIRED AS PER RI NO: RI-52-49-15711 REV.A) - [SDR UIEA2022062900677](https://openairdocs.org/sdr/UIEA2022062900677.md): Power Supply · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > CABIN SEAT 9 TO 25 AISLE EMER LIGHT INOP(POWER SUPPLY M7926 REPLACED AND OPERATIONAL CHECK NORMAL IAW AMM 33-51-04) - [SDR UIEA2022062900678](https://openairdocs.org/sdr/UIEA2022062900678.md): Light · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > L/H 4DR DOOR MOUNTED EMER LT INOP(LIGHT ASSY REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-06) - [SDR UIEA2022062900679](https://openairdocs.org/sdr/UIEA2022062900679.md): Power Supply · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > M5934 EMER LIGHT BATTERY PACK CAPACITY CHECK FAIL(M5934 POWER SUPPLY ASSY REPLACED IAW AMM 33-51-04) - [SDR UIEA2022062900680](https://openairdocs.org/sdr/UIEA2022062900680.md): Light · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > LH 5DR DOOR MOUNTED EMER LT INOP(LIGHT ASSY REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-06) - [SDR UIEA2022062900681](https://openairdocs.org/sdr/UIEA2022062900681.md): Power Supply · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > M7918 EMER LIGHT BATTERY PACK CAPACITY CHECK FAIL(M7918 POWER SUPPLY ASSY REPLACED IAW AMM 33-51-04) - [SDR UIEA2022062900682](https://openairdocs.org/sdr/UIEA2022062900682.md): Light · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > R/H 1DR DOOR MOUNTED EMER LT INOP(LIGHT ASSY REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-06) - [SDR UIEA2022062900683](https://openairdocs.org/sdr/UIEA2022062900683.md): Light · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > R/H #2 DR, DOOR MOUNTED EMER LT INOP(LIGHT ASSY REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-06) - [SDR UIEA2022062900684](https://openairdocs.org/sdr/UIEA2022062900684.md): Lamp · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > R/H OVERWING EMER LT, COUNT FROM LOWER NO.2 LIGHT ASSY 2EA LAMP NOT ILLUM(2EA LAMP REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-03) - [SDR UIEA2022062900685](https://openairdocs.org/sdr/UIEA2022062900685.md): Light · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > R/H 4DR, DOOR MOUNTED EMER LT INOP(LIGHT ASSY REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-06) - [SDR UIEA2022062900686](https://openairdocs.org/sdr/UIEA2022062900686.md): Light · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > L/H 1DR DOOR MOUNTED EMER LT INOP(LIGHT ASSY REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-06) - [SDR UIEA2022062900687](https://openairdocs.org/sdr/UIEA2022062900687.md): Lamp · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > R/H OVERWING EMER LT, COUNT FROM LOWER NO.1 LIGHT ASSY 2EA LAMP INOP(2EA LAMP REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-03) - [SDR UIEA2022062900688](https://openairdocs.org/sdr/UIEA2022062900688.md): Lamp · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > L/H 1 DR DOOR SILL EMER LT (L1846) INOP(LAMP REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-05) - [SDR UIEA2022062900689](https://openairdocs.org/sdr/UIEA2022062900689.md): Light · broken · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > SEAT 45C INSEAT EMER LIGHT FOUND BROKEN (EMER LIGHT ASSY REPLACED AND LIGHT CHECK OKAY IAW AMM 33-51-12) - [SDR UIEA2022062900690](https://openairdocs.org/sdr/UIEA2022062900690.md): Lamp · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > UPPER DECK STAIRWAY CEILING EMER LT FOUND INOP(LAMP REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-04) - [SDR UIEA2022062900691](https://openairdocs.org/sdr/UIEA2022062900691.md): Light · broken · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > SEAT 46C INSEAT EMER LIGHT FOUND BROKEN(EMER LIGHT ASSY REPLACED AND LIGHT CHECK OKAY IAW AMM 33-51-12) - [SDR UIEA2022062900692](https://openairdocs.org/sdr/UIEA2022062900692.md): Lamp · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > CABIN UPPER DECK BETWEEN EMERG EXIT DOOR CEILING LT INOP (LAMP REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-07) - [SDR UIEA2022062900693](https://openairdocs.org/sdr/UIEA2022062900693.md): Light · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > R/H 5DR, DOOR MOUNTED EMER LT INOP (LIGHT ASSY REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-06) - [SDR UIEA2022062900694](https://openairdocs.org/sdr/UIEA2022062900694.md): Power Supply · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > CABIN SEAT 47 TO 60 AISLE EMER LIGHT INOP(POWER SUPPLY M7928 REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-04) - [SDR UIEA2022062900695](https://openairdocs.org/sdr/UIEA2022062900695.md): Light · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > L/H 2DR, DOOR MOUNTED EMER LT INOP(LIGHT ASSY REPLACED AND OPERATION CHECK NORMAL IAW AMM 33-51-06) - [SDR UIEA2022063000696](https://openairdocs.org/sdr/UIEA2022063000696.md): Light · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > WALL MOUNT FLOOR EMER LIGHT NOT ILLUM AT G5 GALLEY L/H CORRIDOR(WALL MOUNTED FLOOR EMER LIGHT ASSY REPLACED AND LIGHT CHECK 'NORMAL' AS PER AMM 33-51-13) - [SDR UIEA2022063000697](https://openairdocs.org/sdr/UIEA2022063000697.md): Connector · unsecure · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > SEAT 45H TO 53H FLOOR EMER LIGHT NOT ILLUM(CONNECTOR RESECURED AND LIGHT CHECK 'NORMAL' AS PER AMM 33-51-12) - [SDR UIEA2022063000701](https://openairdocs.org/sdr/UIEA2022063000701.md): Lamp · inoperative · Jul 1, 2022 · N480MC · Boeing 747422 · Emergency Lighting > L/H 5DR FWD SILL LIGHT NOT ILLUM(LAMP REPLACED AND LIGHT CHECK NORMAL AS PER AMM 33-51-05) - [SDR UIEA2021092502111](https://openairdocs.org/sdr/UIEA2021092502111.md): Light · missing · Sep 23, 2021 · N480MC · Boeing 747422 · Passenger Compartment Lighting > E-PATH LIGHT ASSY MISSING ON SEAT 24H(

TRANSFERRED TO DMI 154048 PER MEL 33-21-01-01-01, CAT C, DUE DATE 4 OCT 21.

) Next page: https://openairdocs.org/aircraft/N480MC/reports.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE n_number = 'N480MC' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N480MC/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.