# N446MC: 2004 Boeing 747-4B5F - Status: Valid registration - Airframe: [Boeing 747-4B5F](https://openairdocs.org/model/boeing-747-4b5f) (registry code 13848BH, 490 seats) - Engine: [Pratt & Whitney PW4062A](https://openairdocs.org/engine/pratt-whitney-pw4062a) (registry code 51675) - Data sheets: [TCDS E24NE](https://openairdocs.org/tcds/E24NE) (Pratt & Whitney Division) (OpenAirDocs) - Serial number: 33517 - Year built: 2004 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Standard, transport - Airworthiness date: October 25, 2017 - Certificate issued: July 22, 2021 - Expires: July 31, 2028 - Mode S code: A561FD - Registered owner: [Atlas Air Inc](https://openairdocs.org/faa-owner/ATLAS%20AIR%20INC) - Location: [Purchase, NY](https://openairdocs.org/faa-place/NY/Purchase) - Owner type: Corporation - Owner's area on the map: 41.0382° N, 73.7107° W: Placed by OpenAirDocs at the center of ZIP code 10577, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=446MC - Page: https://openairdocs.org/aircraft/N446MC From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. ## ADs that may apply (OpenAirDocs): 15 in force ### Matched by airframe (Boeing 747-4B5F) None in force. ### Matched by engine (Pratt & Whitney PW4062A) - [AD 2026-21-06](https://openairdocs.org/ad/2026-21-06): Engine Fuel and Control · Pratt & Whitney Division PW4052, PW4056, PW4060 and 10 more. Effective Nov 23, 2026 - [AD 2018-13-02](https://openairdocs.org/ad/2018-13-02): Turbine Engine Combustion Section · Pratt & Whitney Division PW4052, PW4056, PW4060 and 7 more. Effective Jul 20, 2018 - [AD 2016-08-09](https://openairdocs.org/ad/2016-08-09): HPC 10th stage disk · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Jun 1, 2016 - [AD 2015-22-03](https://openairdocs.org/ad/2015-22-03): LPT 4th stage IAS · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Dec 1, 2015 - [AD 2012-22-16](https://openairdocs.org/ad/2012-22-16): 3rd stage LPT duct segments · Pratt & Whitney Division PW4050, PW4052, PW4056 and 13 more. Effective Dec 19, 2012 - [AD 2012-14-09](https://openairdocs.org/ad/2012-14-09): 3rd and 4th stage vane fractures · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Nov 7, 2012 - [AD 2012-18-17](https://openairdocs.org/ad/2012-18-17): HPC drum rotor disk assembly · Pratt & Whitney Division PW4052, PW4056, PW4060 and 16 more. Effective Oct 22, 2012 - [AD 2012-18-03](https://openairdocs.org/ad/2012-18-03): 1st stage HPT air seal rings · Pratt & Whitney Division PW4050, PW4052, PW4056 and 18 more. Effective Oct 11, 2012 - [AD 2012-16-01](https://openairdocs.org/ad/2012-16-01): High-pressure turbine (HPT) stage 1 front hubs · Pratt & Whitney Division PW4052, PW4056, PW4060 and 14 more. Effective Sep 28, 2012 - [AD 2012-06-18](https://openairdocs.org/ad/2012-06-18): Engine · Pratt & Whitney Division PW4050, PW4052, PW4056 and 13 more. Effective Apr 27, 2012 - [AD 2012-04-04](https://openairdocs.org/ad/2012-04-04): fuel metering units (FMUs) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 13 more. Effective Apr 5, 2012 - [AD 2011-25-09](https://openairdocs.org/ad/2011-25-09): PW4000 turbofan engines · Pratt & Whitney Division PW4050, PW4052, PW4056 and 18 more. Effective Jan 10, 2012 - [AD 2010-24-14](https://openairdocs.org/ad/2010-24-14): HPC 10th stage disk · Pratt & Whitney Division PW4050, PW4052, PW4056 and 17 more. Effective Jan 21, 2011 - [AD 2010-24-09](https://openairdocs.org/ad/2010-24-09): No. 3 bearing oil pressure tubes · Pratt & Whitney Division PW4050, PW4052, PW4056 and 34 more. Effective Dec 28, 2010 - [AD 2005-25-09](https://openairdocs.org/ad/2005-25-09): Engine manufacturer's time limits section (TLS) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 26 more. Effective Jun 12, 2006 ### Historical (superseded or no longer in force) - [AD 2010-18-13](https://openairdocs.org/ad/2010-18-13) (historical): Blade · Pratt & Whitney Division PW4052, PW4056, PW4060 and 16 more. Effective Oct 18, 2010 ## Information bulletins (advisory) (5 in force) - [SAIB 2025-06](https://openairdocs.org/saib/2025-06): High Pressure Turbines. Issued Jul 22, 2025 - [SAIB NE-19-02](https://openairdocs.org/saib/NE-19-02): Turbine Engine Compressor Section -- Low-pressure turbine uncontainment. Issued Feb 19, 2019 - [SAIB NE-16-01R1](https://openairdocs.org/saib/NE-16-01R1): Turbine Section. Issued Jan 14, 2016 - [SAIB NE-15-19](https://openairdocs.org/saib/NE-15-19): Turbine Section. Issued Jul 14, 2015 - [SAIB NE-13-31](https://openairdocs.org/saib/NE-13-31): Turbine Engine Oil System Scavenge Oil Tube Coking and Proper Cleaning at Overhaul. Issued May 9, 2013 - [SAIB NE-16-01](https://openairdocs.org/saib/NE-16-01) (historical): Turbine Section. Issued Oct 5, 2015 ## NTSB investigations None matched to N446MC. ## FAA accident and incident reports None matched to N446MC. ## Service difficulty reports (68, newest 50) As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR UIEA2025080901117](https://openairdocs.org/sdr/UIEA2025080901117), Aug 9, 2025: ENGINE. VIBRATION. NR 2 ENG EXCESSIVE VIBRATION 4.5 N1. NO CHANGE WHEN THROTTLE REDUCED AT CRUISE LEVEL. VIBRATION FELT THROUGH RUDDER PEDALS. MAX RECORDED 5.0(

#2 ENG 2 EACH BA - [SDR UIEA2025071800977](https://openairdocs.org/sdr/UIEA2025071800977), Aug 8, 2025: BULB. INOPERATIVE. LEFT DOOR 1, CEILING FWD EMERGENCY LIGHT (L5735) FOUND INOPERATIVE. REPLACED THE LIGHT BULB FOR L1 DOOR CEILING FWD EMERGENCY LIGHT IAW AMM 33-51-07. OPS TESTED - [SDR UIEA2025072301010](https://openairdocs.org/sdr/UIEA2025072301010), Aug 8, 2025: FITTING. CRACKED. ONE CRACK WAS FOUND ON BS 1000 INTERCOSTAL LUG FITTING AT RBL 11.33. INTERCOSTAL LUG FITTING REPLACED IAW EO 4453C024, REV.4, PART 7, STEP 3. NO FURTHER DEFECTS - [SDR UIEA2025072401020](https://openairdocs.org/sdr/UIEA2025072401020), Aug 8, 2025: LAMP. INOPERATIVE. L1 DOOR L1854 EMERGENCY LIGHT FOUND INOPERATIVE. L1 DOOR L1854 EMERGENCY LIGHTT LAMP REPLACED AND TESTED NORMAL IAW AMM 33-51-05. - [SDR UIEA2025072501025](https://openairdocs.org/sdr/UIEA2025072501025), Aug 8, 2025: SEAT TRACK. CORRODED. MAIN DECK, BS 1890-1900, LBL 11, SEAT TRACK FOUND CORRODED. SEAT TRACK CORROSION AREA REMOVED IAW SRM 51-10-02 AND REPROTECTED IAW SRM 51-20-01 BLEND OUT AREA M - [SDR UIEA2025072601027](https://openairdocs.org/sdr/UIEA2025072601027), Aug 8, 2025: SEAT TRACK. CORRODED. MAIN DECK, BS 1800-1820, LBL33, SEAT TRACK FOUND CORRODED. SEAT TRACK CORROSION REMOVED IAW SRM 51-10-02 AND REPROTECTED IAW SRM 51-20-01 AND BLEND OUT AREA MEA - [SDR UIEA2025072601028](https://openairdocs.org/sdr/UIEA2025072601028), Aug 8, 2025: SEAT TRACK. CORRODED. MAIN DECK, BS 1920-1940, RBL 33. SEAT TRACK FOUND CORRODED. SEAT TRACK CORROSION REMOVED IAW SRM 51-10-02 & REPROTECTED IAW SRM 51-20-01 AND BLEND OUT AREA MEAS - [SDR UIEA2025072601030](https://openairdocs.org/sdr/UIEA2025072601030), Aug 8, 2025: SEAT TRACK. CORRODED. MAIN DECK, BS 1900-1920, RBL 33, SEAT TRACK FOUND CORRODED. SEAT TRACK CORROSION REMOVED IAW SRM 51-10-02 & REPROTECTED IAW SRM 51-20-01 AND BLEND OUT AREA MEAS - [SDR UIEA2025072601031](https://openairdocs.org/sdr/UIEA2025072601031), Aug 8, 2025: SEAT TRACK. CORRODED. MAIN DECK, BS 1780-1800, RBL 33, SEAT TRACK FOUND CORRODED. SEAT TRACK CORROSION REMOVED IAW SRM 51-10-02 & REPROTECTED IAW SRM 51-20-01 AND BLEND OUT AREA MEAS - [SDR UIEA2025072601032](https://openairdocs.org/sdr/UIEA2025072601032), Aug 8, 2025: SEAT TRACK. CORRODED. MAIN DECK, BS 1800-1820, LBL 11, SEAT TRACK FOUND CORRODED. SEAT TRACK CORROSION REMOVED IAW SRM 51-10-02 & REPROTECTED IAW SRM 51-20-01 AND MEASURED L:6"X W:0. - [SDR UIEA2025072601033](https://openairdocs.org/sdr/UIEA2025072601033), Aug 8, 2025: SEAT TRACK. CORRODED. MAIN DECK, BS 1850-1860, RBL 11 SEAT TRACK FOUND CORRODED. SEAT TRACK CORROSION REMOVED IAW SRM 51-10-02 & REPROTECTED IAW SRM 51-20-01 AND BLEND OUT AREA MEASU - [SDR UIEA2025072701034](https://openairdocs.org/sdr/UIEA2025072701034), Aug 8, 2025: WEB. CRACKED. ON RT LONGERON FITTING AT BS 1480 INSPECTION, ADJACENT WEB AREA FOUND CRACKED. VERTICAL WEB CRACK AREA REPAIRED IAW SRM 53-40-08-2R-1, REPAIR 1, FIG 201, AND RI - [SDR UIEA2025072801045](https://openairdocs.org/sdr/UIEA2025072801045), Aug 8, 2025: SKIN. CRACKED. NUMBER 1 PYLON RT 452ER CUTOUT LOWER AFT CORNER FOUND CRACKED. PYLON SKIN REPAIRED IAW RI-54-50-17809, REV.A. NO FURTHER DEFCTS NOTED. - [SDR UIEA2025072901056](https://openairdocs.org/sdr/UIEA2025072901056), Aug 8, 2025: PANEL. DAMAGED. NUMBER 3 PYLON 472FL PRSOV PANEL FOUND ONE FASTENER HOLE ELONGATED. PANEL REPLACED IAW RI-54-50-17797, REV A. NO FURTHER DEFECTS NOTED - [SDR UIEA2025073001072](https://openairdocs.org/sdr/UIEA2025073001072), Aug 8, 2025: CHANNEL. CRACKED. LEFTHORIZONTAL STAB TIP FAIRING, AFT WEDGE, FWD U CHANNEL FOUND CRACKED. CRACKED U CHANNEL REPLACED IAW RI-55-10-17796, REV A. NO FURTHER DEFECTS NOTED. - [SDR UIEA2025073101074](https://openairdocs.org/sdr/UIEA2025073101074), Aug 8, 2025: BEAM. CRACKED. ONE CRACK WAS FOUND ON LT NOSE WHEEL WELL SIDE PANEL BEAM, BS 260-280 WL 180. BEAM REPLACED IAW SRM 51-10-02 & NEW BEAM HOLE'S TRANSFERRED IAW SRM 51-40-05 & NE - [SDR UIEA2025080101076](https://openairdocs.org/sdr/UIEA2025080101076), Aug 8, 2025: WEB. CRACKED. MAIN DECK, BS 1241 LBL 76, BELOW FLOOR, CLOSEOUT PANEL ATTACH WEB FOUND CORRODED AND CRACKED. WEB CRACK AREA REPAIRED IAW RI-53-40-17828, REV A. NO FURTHER DEFE - [SDR UIEA2025080101077](https://openairdocs.org/sdr/UIEA2025080101077), Aug 8, 2025: CLOSEOUT PANEL. CRACKED. MAIN DECK, BS 1241, LBL 77- 90, BELOW FLOOR PANEL LT CLOSURE PANEL FOUND CRACKED. CRACKED CLOSURE PANEL REPLACED IAW SRM 51-10-02 AND NEW CLOSURE PANEL HOLE'S T - [SDR UIEA2025080501085](https://openairdocs.org/sdr/UIEA2025080501085), Aug 8, 2025: SKIN. DELAMINATED. RIGHT WING NR 15 K FLAP EXT SURFACE FOUND DELAMINATED. PERFORMED PERMANENT COMPOSITE REPAIR AS PER SRM 51-70-07, PAR.5.A.(1). NO FURTHER DEFECTS NOTED. - [SDR UIEA2025080501086](https://openairdocs.org/sdr/UIEA2025080501086), Aug 8, 2025: FAIRING. DELAMINATED. LEFT WING OTBD FORE FLAP L/E FAIRING FOUND DELAMINATED. PERFORMED PERMANENT COMPOSITE REPAIR AS PER SRM 51-70-07, PAR.5.A.(1). NO FURTHER DEFECTS NOTED. - [SDR UIEA2025080501087](https://openairdocs.org/sdr/UIEA2025080501087), Aug 8, 2025: FAIRING. DELAMINATED. LEFT WING OTBD FORE FLAP L/E FAIRING FOUND DELAMINATATED. PERFORMED PERMANENT COMPOSITE REPAIR IAW SRM 51-70-07, PAR.5.A.(1). NO FURTHER DEFECTS NOTED. - [SDR UIEA2025080501088](https://openairdocs.org/sdr/UIEA2025080501088), Aug 8, 2025: FAIRING. DELAMINATED. LEFT WING OTBD MID FLAP L/E FAIRING FOUND DELAMINATED. PERFORMED PERMANENT COMPOSITE REPAIR AS PER SRM 51-70-07, PAR.5.A.(1). NO FURTHER DEFECTS NOTED. - [SDR UIEA2025080701106](https://openairdocs.org/sdr/UIEA2025080701106), Aug 8, 2025: GRILL. DAMAGED. M/D GALLEY VENT FILTER AIR GRILL FOUND DAMAGED (LOUVER BROKEN) SUBJECT AIR GRILL WAS REPLACED AS PER AMM 25-32-17 REV 114, 15 JUL 2025. LOCAL FABRICATION IAW HX - [SDR UIEA2025022200159](https://openairdocs.org/sdr/UIEA2025022200159), Feb 22, 2025: HYDRAULIC LINE. LEAKING. HYD QTY LOW 1 FOLLOWED BY HYD PRESS SYSTEM 1(

FOUND #1 HYD RESERVIOR RETURN LINE LEAKING AND RETURN LINE REPLACED WITH TEMPORARY FLEXIBLE LINE AND CHECKED NOR - [SDR UIEA2025102901285](https://openairdocs.org/sdr/UIEA2025102901285), Oct 29, 2024: PUMP. INOPERATIVE. ENGINE 3 FUEL VALVE EICAS MSG RESULTING IN ENGINE FAILURE, UNABLE TO RESTART(

MX MSG 73077. C/W FIM 71-00-980 WIRE CHECKS, NO DEFECTS NOTED. R/R #3 ENG FUEL P - [SDR UIEA2024032100163](https://openairdocs.org/sdr/UIEA2024032100163), Mar 21, 2024: SENSOR. DETACHED. #9 BRAKE LIMITER CAME OFF (PIREP)(

FOUND DAMAGED, R/R BRAKE ROD & TORQUE SENSOR IAW AMM 32-42-20. OPS CHECK GOOD

) - [SDR UIEA2023082900805](https://openairdocs.org/sdr/UIEA2023082900805), Aug 28, 2023: UNKNOWN. UNKNOWN. FND M/D FLOOR STRUCTURE SUB-SEAT TRACK CRACK AT STA 1480, RBL 75.92(

1) REPAIR THE DAMAGED SEAT TRACK IAW SRM 53-00-52-2R-13 REPAIR 13 REV 98, DWG 65B38251 SH - [SDR UIEA2023082900815](https://openairdocs.org/sdr/UIEA2023082900815), Aug 28, 2023: ACTUATOR. UNKNOWN. FUNCTION FAIL - FOUND LH WLG ALTN ELEC MOTOR FUNCTION TEST FAIL(

1) IAW AMM 32-36-01-004-001 REV 108 AND AMM 32-36-01-404-009 REV 108 STEP A TO F(4) R/R LH WL - [SDR UIEA2023082900814](https://openairdocs.org/sdr/UIEA2023082900814), Aug 28, 2023: ROD END. BROKEN. FOUND LH WING INBD AILERON PCA ROD END BROKEN(

1) IAW AMM 27-11-12-002-001 REV 108 AND AMM 27-11-12-402-010 REV 108 R/R LH WING INBD AILERON PCA. 2) CONDITION - [SDR UIEA2023082900813](https://openairdocs.org/sdr/UIEA2023082900813), Aug 28, 2023: BATTERY. UNKNOWN. DURING THE EMERGENCY LIGHT BATTERY PACK CAPACITY TEST, FOUND M5170 BATTERY FUNCTION FAIL(

1) IAW AMM 33-51-04-902-001-001 REV 108 R/R EMERGENCY LIGHT BATTERY - [SDR UIEA2023082900812](https://openairdocs.org/sdr/UIEA2023082900812), Aug 28, 2023: FITTING. UNKNOWN. FND M/D CGO FLOOR FITTING CORROSION AT STA 2360 RBL 31(

1) IAW AMM SUBTASK 53-44-00-212-001 REV 108 REMOVED M/D CGO FLOOR FITTING AT STA 2360 RBL 31. 2) FABRI - [SDR UIEA2023082900811](https://openairdocs.org/sdr/UIEA2023082900811), Aug 28, 2023: UNKNOWN. UNKNOWN. CORROSION - FOUND M/D SEAT TRACK CROWN CORROSION STA 1780 LBL 98.58(

1) REMOVED THE AFFECTED FASTENER IAW SRM 51-40-02-0G-0 REV 98. 2) PERFORM EI T2023A53M-20 - [SDR UIEA2023082900810](https://openairdocs.org/sdr/UIEA2023082900810), Aug 28, 2023: UNKNOWN. UNKNOWN. FND PIN HOLE DMG ON SEAT TRACK AT M/D STA 1630 LBL 11.33(

1) REMOVED AFFECTED FASTENERS IAW SRM 51-40-02-0G-0 REV 98. 2) REPAIR DAMAGED AREA IAW EI T2023A53M- - [SDR UIEA2023082900809](https://openairdocs.org/sdr/UIEA2023082900809), Aug 28, 2023: UNKNOWN. UNKNOWN. DUE TO EO INSP, WASHERS WERE NOT FOUND UNDER EACH FASTENER HEAD, REQUEST ADD EO PART 2 AND PART 5. PERFORM NOSE W/W FWD CORNER DOUBLER MODIFICATION NEAR STA 240 - [SDR UIEA2023082900808](https://openairdocs.org/sdr/UIEA2023082900808), Aug 28, 2023: UNKNOWN. UNKNOWN. DEVIATION - DURING PERFORMING SB 47-53A2487 REV 4 & AD2002-23-15, DEVIATION WAS FOUND.(

1) ACCOMPLISHED JOB IAW EI T2023A53M-1912 SEQ B REV 1. 2) ACCOMPLISHED - [SDR UIEA2023082900807](https://openairdocs.org/sdr/UIEA2023082900807), Aug 28, 2023: FITTING. UNKNOWN. CRACK - FOUND CRACK ON LBL 11.33 INTERCOSTAL LUG FITTING AT STA 1000 (SB 747-53A2904)(

1) ACCOMPLISHED EO 4453C024 PART 3 CONDITION 6 REV 3. 2) JOB COMPLETED - [SDR UIEA2023082900806](https://openairdocs.org/sdr/UIEA2023082900806), Aug 28, 2023: UNKNOWN. UNKNOWN. FND M/D FLOOR STRUCTURE SUB-SEAT TRACK CRACK AT STA 985 RBL 75.92(

1) REPAIR THE DAMAGED SEAT TRACK IAW SRM 53-00-52-2R-13 REPAIR 13 REV 98, DWG 65B38250 SH 1 - [SDR UIEA2023082900804](https://openairdocs.org/sdr/UIEA2023082900804), Aug 28, 2023: UNKNOWN. UNKNOWN. CRACK - FOUND M/D SUBSTITUTE TRACK CRACK AT STA 560 - 580 LBL 75.92(

1) REPAIR THE DAMAGED SEAT TRACK IAW SRM 53-00-52-2R-13 REV 98, DWG 65B38250 SH 17 REV A - [SDR UIEA2023082900803](https://openairdocs.org/sdr/UIEA2023082900803), Aug 28, 2023: UNKNOWN. UNKNOWN. DENT - SKIN, LH WING INBD T/E MID FLAP PNL 577GT INBD SIDE EXTERNAL(

1) PERFORM PERMANET REPAIR AT LH WING INBD MID FLAP PNL 577GT REF TO JOB CARD ATTACHING S - [SDR UIEA2023082900802](https://openairdocs.org/sdr/UIEA2023082900802), Aug 28, 2023: UNKNOWN. UNKNOWN. CRACK - SKIN, LH WING INBD AFT FLAP PNL 578GT OUTBD SIDE EXTERNAL SURFACE(

1) PERFORM LH WING INBD AFT FLAP TOP PANEL 578GT SKIN PERMANENT REPAIR IAW JOB CARD - [SDR UIEA2023082900801](https://openairdocs.org/sdr/UIEA2023082900801), Aug 28, 2023: UNKNOWN. UNKNOWN. MDDR 188056, PERMANENT REPAIR OF LH ELEVATOR ON OR BEFORE 25 F/C PER EO 4455A183(

1) REMOVE THE DAMAGE MATERIAL, CLEAN & MEASURE THE DAMAGE AREA (L: 8.5", - [SDR UIEA2023021100107](https://openairdocs.org/sdr/UIEA2023021100107), Feb 12, 2023: NONE. NONE. MAIN DECK FIRE WARNING IN FLIGHT(

FOUND MD DET B LOOP A & B, DET 16 LOOP A & B FAILED. PER MCC REQUEST, TWO AFOLTS CARDS ALSO NEED TO BE REPLACED. PER - [SDR UIEA2022071900767](https://openairdocs.org/sdr/UIEA2022071900767), Jul 19, 2022: SMOKE DETECTOR. WARNING MESSAGE. EQUIPMENT SMOKE EICAS MESSAGE(R/R SMOKE DETECTOR IAW AMM 26-16-51. OPS CHECK GOOD

) - [SDR UIEA2021070801493](https://openairdocs.org/sdr/UIEA2021070801493), Jul 27, 2021: SUPPORT. CRACKED. FX STA 1240 RH BODY FAIRING SUPPORT FOUND CRACK(

FX STA 1240 RH BODY FAIRING SUPPORT CRACK AREA REPAIRED AS PER SRM 53-00-71-2R-1 AND 51-70-11

) - [SDR UIEA2021071801582](https://openairdocs.org/sdr/UIEA2021071801582), Jul 27, 2021: POWER SUPPLY. NO TEST. UPPER DECK EMER LT PWR SPLY M5168 RELATED EMER LT CANNOT STAY ON 15MIN(

UPPER DECK EMERG LT PWR SPLY M5168 REPLACED AND INSTALLATION TEST OKAY IAW AMM 33-51-0 - [SDR UIEA2021072001596](https://openairdocs.org/sdr/UIEA2021072001596), Jul 27, 2021: SEAT TRACK. CRACKED. M/D STA 1000-1265 RH SEAT TRACK RBL 11 3EA LOCATION FND CRACK (CRACK LOCATION AT STA 1030, 1090 AND 1250 RBL11)(

M/D STA 1000-1265 RBL 11 SEAT TRACK REPAIRED - [SDR UIEA2021072001597](https://openairdocs.org/sdr/UIEA2021072001597), Jul 27, 2021: SEAT TRACK. CRACKED. M/D STA 1000-1265 LBL 11 SEAT TRACK SEVERAL LOCATION FOUND CRACK (CRACK LOCATION AT STA 1110, 1130, 1150, 1170, 1210 AND 1230)(

M/D STA 1000-1265 LBL 11 SEAT - [SDR UIEA2021072101601](https://openairdocs.org/sdr/UIEA2021072101601), Jul 27, 2021: SKIN. DELAMINATED. RHW O/B T/E AFT FLAP I/B AREA L/E FAIRING EXTERIOR SURFACE FOUND DELAMINATION.(

PERFORMED PERMANENT COMPOSITE HOT BOND REPAIR AT RHW O/B T/E AFT FLAP I/B AREA - [SDR UIEA2021072101602](https://openairdocs.org/sdr/UIEA2021072101602), Jul 27, 2021: SKIN. DENTED. RHW I/B AFT FLAP LOWER SURFACE MID AREA FOUND DENT. PERFORMED PERMANENT COMPOSITE HOT BOND REPAIR AT RHW I/B AFT FLAP LOWER SURFACE AS PER SRM 51-70-07 PAR 5A. - [SDR UIEA2019071804780](https://openairdocs.org/sdr/UIEA2019071804780), Jul 29, 2019: DOUBLER. CRACKED. M/D - L5 DOOR FWD CUTOUT REVEAL DOUBLER FOUND CRACKED.(

THE SUBJECT REVEAL DOUBLER REPAIR CARRIED OUT IAW SRM 53-60-15-2R-3 REPAIR 3.

) All 68: https://openairdocs.org/aircraft/N446MC/reports.md ## STCs that may be installed (OpenAirDocs) None matched to this aircraft's models. ## Related - Other Boeing 747-4B5F aircraft: https://openairdocs.org/model/boeing-747-4b5f/aircraft.md - The Pratt & Whitney PW4062A engine: https://openairdocs.org/engine/pratt-whitney-pw4062a.md --- 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.