# N747BC: 1992 Boeing 747-4J6 - Status: Valid registration - Airframe: [Boeing 747-4J6](https://openairdocs.org/model/boeing-747-4j6) (registry code 13848BG, 495 seats) - Engine: [Pratt & Whitney PW4056](https://openairdocs.org/engine/pratt-whitney-pw4056) (registry code 51665) - Data sheets: [TCDS E24NE](https://openairdocs.org/tcds/E24NE) (Pratt & Whitney Division) (OpenAirDocs) - Serial number: 25879 - Year built: 1992 - Type: Fixed wing multi engine - Engine type: Turbo-fan - Airworthiness: Experimental, research and development, operating kit built - Airworthiness date: March 18, 2026 - Certificate issued: August 27, 2001 - Expires: February 29, 2028 - Mode S code: AA0CA7 - Registered owner: [Boeing Aircraft Holding Co](https://openairdocs.org/faa-owner/BOEING%20AIRCRAFT%20HOLDING%20CO) - Location: [Seattle, WA](https://openairdocs.org/faa-place/WA/Seattle) - Owner type: Corporation - Owner's area on the map: 47.6062° N, 122.3321° W: Placed by OpenAirDocs: center of Seattle, WA, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=747BC - Page: https://openairdocs.org/aircraft/N747BC 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): 25 in force ### Matched by airframe (Boeing 747-4J6) None in force. ### Matched by engine (Pratt & Whitney PW4056) - [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 2008-24-13](https://openairdocs.org/ad/2008-24-13): Electronic engine controls (EECs) · Pratt & Whitney Division PW4052, PW4056, PW4060 and 6 more. Effective Jan 8, 2009 - [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 - [AD 2003-19-15](https://openairdocs.org/ad/2003-19-15): High-Pressure-Compressor (HPC) Surges · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Oct 30, 2003 - [AD 2002-12-15](https://openairdocs.org/ad/2002-12-15): Front Drum Rotors · Pratt & Whitney Division PW4052, PW4056, PW4060 and 6 more. Effective Jul 31, 2002 - [AD 2001-05-07](https://openairdocs.org/ad/2001-05-07): Low Pressure Turbine (LPT) 4th Stage Air Seal · Pratt & Whitney Division PW4052, PW4056, PW4060 and 11 more. Effective Mar 30, 2001 - [AD 99-15-01](https://openairdocs.org/ad/99-15-01): Low Pressure Turbine Disks · Pratt & Whitney Division PW4056, PW4152, PW4156A and 3 more. Effective Sep 14, 1999 - [AD 98-23-08](https://openairdocs.org/ad/98-23-08): High Pressure Compressor Blade Tips · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Jan 12, 1999 - [AD 98-19-03](https://openairdocs.org/ad/98-19-03): High Pressure Turbine Rotating Airseals · Pratt & Whitney Division PW4052, PW4056, PW4060 and 9 more. Effective Nov 9, 1998 - [AD 96-13-08](https://openairdocs.org/ad/96-13-08): AFT Cascade Support Frame Assembly · Pratt & Whitney assembly Part Number 221D5015, Revision A (STC SE744NE). Effective Aug 1, 1996 - [AD 93-08-16](https://openairdocs.org/ad/93-08-16): Fuel Pump · Pratt & Whitney Division PW4050, PW4052, PW4056 and 2 more. Effective Jul 12, 1993 - [AD 90-22-02](https://openairdocs.org/ad/90-22-02): Low Pressure Turbine Shaft · Pratt & Whitney Division PW4050, PW4052, PW4056 and 6 more. Effective Oct 18, 1990 ### 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 - [AD 2003-11-18](https://openairdocs.org/ad/2003-11-18) (historical): High-Pressure-Compressor (HPC) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Jul 7, 2003 - [AD 2002-21-10](https://openairdocs.org/ad/2002-21-10) (historical): High pressure compressor (HPC) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Nov 12, 2002 - [AD 2002-03-08](https://openairdocs.org/ad/2002-03-08) (historical): Time Limits Section of Engine Manuals (EM's) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 25 more. Effective Apr 16, 2002 - [AD 2001-25-11](https://openairdocs.org/ad/2001-25-11) (historical): Compressor Surges · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Jan 17, 2002 - [AD 2001-20-13](https://openairdocs.org/ad/2001-20-13) (historical): High Pressure Compressor Front Drum Rotors · Pratt & Whitney Division PW4052, PW4056, PW4060 and 6 more. Effective Nov 16, 2001 - [AD 2001-15-12](https://openairdocs.org/ad/2001-15-12) (historical): High Pressure Compressors (HPC) · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective Aug 10, 2001 - [AD 2001-09-07](https://openairdocs.org/ad/2001-09-07) (historical): High Pressure Compressor (HPC) Surge · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more. Effective May 14, 2001 - [AD 2001-08-52](https://openairdocs.org/ad/2001-08-52) (historical): Multiple-engine power loss due to HPC surges · Pratt & Whitney Division PW4050, PW4052, PW4056 and 12 more - [AD 2000-25-06](https://openairdocs.org/ad/2000-25-06) (historical): Low Pressure Turbine (LPT) 4th Stage Air Seal · Pratt & Whitney Division PW4052, PW4056, PW4060 and 11 more. Effective Dec 29, 2000 - [AD 2000-22-01](https://openairdocs.org/ad/2000-22-01) (historical): High Pressure Compressor Cutback Stator · Pratt & Whitney Division PW4050, PW4052, PW4056 and 6 more. Effective Nov 9, 2000 - [AD 2000-12-02](https://openairdocs.org/ad/2000-12-02) (historical): Critical Life-Limited Part · Pratt & Whitney Division PW4050, PW4052, PW4056 and 24 more. Effective Sep 13, 2000 - [AD 99-17-16](https://openairdocs.org/ad/99-17-16) (historical): Pratt & Whitney Division PW4050, PW4052, PW4056 and 11 more. Effective Sep 24, 1999 - [AD 99-08-15](https://openairdocs.org/ad/99-08-15) (historical): Pratt & Whitney Division PW4050, PW4052, PW4056 and 20 more. Effective May 13, 1999 ## 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 N747BC. ## FAA accident and incident reports (1) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Incident 20061207027599I](https://openairdocs.org/incident/20061207027599I), Dec 7, 2006: Boeing 7474J6 (N747BC), Renton, WA. (-23) The Boeing large cargo freighter (lcf) was on departure from bfi heading to the south and had deployed a piece of test equipment called a trailing cone.… ## Service difficulty reports (134, 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 UIEA2026032800112](https://openairdocs.org/sdr/UIEA2026032800112), Mar 28, 2026: INDICATION SYS. FAULTED. ENGINE NR 3 OIL PRESSURE WENT TO ZERO. EICAS ENG 3 OIL PRESS, RAN QRH CHKLIST WHICH READ ENGINE SHUTDOWN. TEMP WAS 95 & QTY WAS 16. R & R ENG 3 & ENG RUN OK IAW - [SDR UIEA2026022000064](https://openairdocs.org/sdr/UIEA2026022000064), Feb 21, 2026: SERVER. INOPERATIVE. CARGO CAMERA SYSTEM UNAVAILABLE INOP(

REMOVED AND REPLACED VIDEO SEVER UNIT IAW AMM 23-75-05/401. OPS CHECK ALL CAMERAS NORMAL. EFB/CCAM OPS TEST OK

) - [SDR UIEA2025051200598](https://openairdocs.org/sdr/UIEA2025051200598), May 10, 2025: BEAM. CORRODED. CORROSION - BEAM L/H WING L/E LOWER PNL FWD SUPPORT BEAM INNER FACE ILES 757.(

1. BLENDED OUT THE DAMAGE AREA IAW SRM 51-10-02-0G-0 REV 60. 2. PFM NDT INSP RE - [SDR UIEA2025051200599](https://openairdocs.org/sdr/UIEA2025051200599), May 10, 2025: BEAM. CORRODED. CORROSION - BEAM L/H WING OUTBD L/E LOWER PNL FWD SUPPORT BEAM INNER FACE OLES 1552.(

1. BLENDED OUT THE DAMAGE AREA IAW SRM 51-10-02-0G-0 REV 60. 2. PFM NDT - [SDR UIEA2025051200600](https://openairdocs.org/sdr/UIEA2025051200600), May 10, 2025: BEAM. CORRODED. CORROSION - BEAM L/H WING OUTBD L/E LOWER PNL FWD SUPPORT BEAM INNER FACE OLES 1497.(

1. BLENDED OUT THE DAMAGE AREA IAW SRM 51-10-02-0G-0 REV 60. 2. PFM NDT - [SDR UIEA2025051200601](https://openairdocs.org/sdr/UIEA2025051200601), May 10, 2025: BATTERY PACK. INOPERATIVE. FOUND EMER LIGHT POWER PACK INOP, M14533, M14532, X317.(

1. REPLACED M14333, M14532, X317 BATTERIES AND LIGHT ASSY IAW AMM 33-51-04-902-001-001 & AMM 33-5 - [SDR UIEA2024072500751](https://openairdocs.org/sdr/UIEA2024072500751), Jul 25, 2024: BRAKE SYS. FAULTED. EICAS MESSAGE WITH MASTER WARNING: CONFIG PARKING BRAKE WITH BRAKES RELEASED, CAUSED CREW RTO AT APPROX 40KTS GROUND SPEED. HOT BRAKE TEMP IS 2 UNITS 15 MINUTES - [SDR UIEA2023121901004](https://openairdocs.org/sdr/UIEA2023121901004), Dec 20, 2023: UNKNOWN. UNKNOWN. A PUNCTURED HOLE ON THE FUSELAGE SKIN NEAR STA 1241, BETWEEN S-105L & S-106L(

1) ACCOMPLISHED EI T2023A53M-3476 REV 1. 2) JOB COMPLETED AND CONDITION CHECK NO - [SDR UIEA2023121901005](https://openairdocs.org/sdr/UIEA2023121901005), Dec 20, 2023: LAMP. UNKNOWN. FOUND M14534 EMERGENCY BATTERY PACK FAIL AND X317 EMERGENCY BATTERIES FAIL(

1) IAW AMM 33-51-04-902-001-001 REV 109 R/R EMERGENCY BATTERY PACK AT M14534 AND P - [SDR UIEA2023052300521](https://openairdocs.org/sdr/UIEA2023052300521), May 21, 2023: UNKNOWN. UNKNOWN. FOUND BRACKET DAMAGE 5 EACH AT R/H UPR W-T-B FAIRING PNL 292DR(

1) IAW AMM 53-51-01-004-001 REV107 RMV PNL FITTING. 2) FABRICATED PARTS AND INSTALL PARTS IAW - [SDR UIEA2023052300520](https://openairdocs.org/sdr/UIEA2023052300520), May 21, 2023: BATTERY PACK. UNKNOWN. FOUND THE EMERGENCY LIGHT INOP. EQUIPT M14529, L6510, L1845, L1846, M3430, L6504, L6512, L6502 & X317(

1) IAW AMM 33-31-04-902-001-001 REV 107 REPLACED BATTER - [SDR UIEA2023052300519](https://openairdocs.org/sdr/UIEA2023052300519), May 21, 2023: UNKNOWN. UNKNOWN. CORROSION - FOUND FUSELAGE KEEL BEAM LOWER CHORD CORROSION AT STA 1032 LBL 9(

1) BLENDED OUT THE DAMAGE AREA IAW SRM 51-10-02-0G-0 REV 54. 2) PFM EI T2023A53M - [SDR UIEA2023052300518](https://openairdocs.org/sdr/UIEA2023052300518), May 21, 2023: UNKNOWN. UNKNOWN. CORROSION - #2 ENG LH CORE COWL OUTER SURFACE(

1) REPAIR DAMAGE AREA IAW EI T2023A71M-1181 REV 0. 2) JOB COMPLETED AND CONDITION CHECK NORMAL

) - [SDR UIEA2023052300517](https://openairdocs.org/sdr/UIEA2023052300517), May 21, 2023: STRAP. UNKNOWN. CORROSION - FND RH WING FIXED L/E UPPER CHORD AREA STRAP CORROSION AT OLES 1535(

1) REMOVE DAMAGE PART IAW SRM 51-40-02-06-0 REV 54. 2) INSTALL NEW PART IAW S - [SDR UIEA2023052300516](https://openairdocs.org/sdr/UIEA2023052300516), May 21, 2023: UNKNOWN. UNKNOWN. CORROSION - SKIN #4 ENG LH CORE COWL COOLING AIR EXHAUST AREA AT NAC STA 230(

1) REPAIR DAMAGE AREA IAW EI T2023A71M-1210 REV 2. 2) JOB COMPLETED AND CONDITIO - [SDR UIEA2023052300515](https://openairdocs.org/sdr/UIEA2023052300515), May 21, 2023: BRACKET. UNKNOWN. FORWARD LOWER WING TO BODY FAIRING LOWER PANEL RIB SUPPORT BRACKET CORROSION STA 920, WBL 0(

1) REMOVE DAMAGE BRACKET (2 EA) IAW SRM 51-40-02-0G-0 REV 54. 2) - [SDR UIEA2023052300514](https://openairdocs.org/sdr/UIEA2023052300514), May 21, 2023: SPLICE. UNKNOWN. CORROSION - FOUND FUSELAGE KEEL BEAM SPLICE TEE CORROSION AT STA 1210 RBL 9(

1) REMOVE DAMAGE PARTS IAW SRM 51-40-02-0G-0 REV 54. 2) FABRICATE PARTS IAW EI T2 - [SDR UIEA2023052300513](https://openairdocs.org/sdr/UIEA2023052300513), May 21, 2023: UNKNOWN. UNKNOWN. LOWER AFT WING TO BODY FAIRING 193BL PANEL FWD SUPPORT RIB SKIN CORROSION STA 1480(

1) REMOVE DAMAGE PART IAW SRM 51-40-02-0G-0 REV 54. 2) INSTALL NEW PART IA - [SDR UIEA2023052300512](https://openairdocs.org/sdr/UIEA2023052300512), May 21, 2023: UNKNOWN. UNKNOWN. LIGHTNING STRIKE - FOUND FUSELAGE SKIN SURFACE HAVE LIGHTNING STRIKE AT STA 580, BETWEEN S-42L AND S-43L(

1) ACCOMPLISHED EI T2023A53M-1111 REV 0. 2) ACCOMPLI - [SDR UIEA2023052300511](https://openairdocs.org/sdr/UIEA2023052300511), May 21, 2023: UNKNOWN. UNKNOWN. KEEL BEAM SIDE WALL SKIN CORROSION AT STA 1060 LBL 9 LEFT SIDE (PANEL 191EL INSIDE)(

1) BLENDED OUT THE DAMAGE AREA IAW SRM 51-10-02-0G-0 REV 54. 2) PERFORM E - [SDR UIEA2023052300510](https://openairdocs.org/sdr/UIEA2023052300510), May 21, 2023: STIFFENER. UNKNOWN. KEEL BEAM SIDE WALL STIFFENER CORROSION STA 1010 RH SIDE (PANEL 192AR INSIDE)(

1) REMOVED THE DAMAGE PART IAW SRM 51-40-02-0G-0 REV 54. 2) FABRICATED PART IAW - [SDR UIEA2023052300509](https://openairdocs.org/sdr/UIEA2023052300509), May 21, 2023: ANGLE. UNKNOWN. CORROSION - FOUND GROUNDING BRACKET CORROSION AT UNDER CENTER WING KEEL BEAM STA 1220 LBL 9(

1) REMOVED DAMAGE PART IAW SRM 51-40-02-0G-0 REV 54. 2) FABRICATE - [SDR UIEA2023052300508](https://openairdocs.org/sdr/UIEA2023052300508), May 21, 2023: UNKNOWN. UNKNOWN. LIGHTNING STRIKE - FOUND FUSELAGE SKIN SURFACE HAVE LIGHTNING AT STA 666 BETWEEN S-42L AND S-43L(

1) ACCOMPLISH EI NO. T2023A53M-1111 REV 0. 2) ACCOMPLISHED E - [SDR UIEA2023052300507](https://openairdocs.org/sdr/UIEA2023052300507), May 21, 2023: UNKNOWN. UNKNOWN. DISBOND - R/H WING OUTBD AFT FLAP TOP PANEL(

1) CUT OUT THE DISBOND MATERIALS AND CLEAN. MEASURE THE CUT OUT (L =2" W= 1". 39" FROM INBD EDGE 5.5" FROM AFT ED - [SDR UIEA2023052300506](https://openairdocs.org/sdr/UIEA2023052300506), May 21, 2023: UNKNOWN. UNKNOWN. CORROSION - FOUND FUSELAGE SKIN CORROSION STA 1700 - STA 1720, S46L - S47L(

1) ACCOMPLISH EI T2023A53M-1148 REV 0. 2) ACCOMPLISH EI T2023A53M-1148 REV 1. 3) J - [SDR UIEA2023052300505](https://openairdocs.org/sdr/UIEA2023052300505), May 21, 2023: UNKNOWN. UNKNOWN. EXISTING UNDOCUMENTED REPAIR ON AFT CARGO DOOR OUTBD SKIN FWD SIDE(

1) PERFORM EXTERNAL AND INTERNAL DVI AND NDT INSPECTION REFER TO JOB CARD ATTACHING SHEET - [SDR UIEA2023052300504](https://openairdocs.org/sdr/UIEA2023052300504), May 21, 2023: UNKNOWN. UNKNOWN. LIGHTNING STRIKE - FOUND FUSELAGE SKIN SURFACE HAVE LIGHTNING STRIKE AT STA 680 S42L(

1) ACCOMPLISH EI T2023A53M-1111 REV 0. 2) ACCOMPLISH EI T2023A53M-1111 R - [SDR UIEA2023052300503](https://openairdocs.org/sdr/UIEA2023052300503), May 21, 2023: UNKNOWN. UNKNOWN. LIGHTNING STRIKE - FOUND FUSELAGE SKIN SURFACE HAVE LIGHTNING STRIKE AT STA 460 BETWEEN S40L AND 241L(

1) ACCOMPLISH EI T2023A53M-1119 REV 0. 2) ACCOMPLISH EI - [SDR UIEA2023052200494](https://openairdocs.org/sdr/UIEA2023052200494), May 21, 2023: UNKNOWN. UNKNOWN. DISBOND - R/H WING OTBD AFT FLAP TOP PANEL UPPER SURFACE WBL 700(

1) CUT OUT THE DISBOND MATERIALS AND CLEAN. MEASURE THE CUT OUT (L =5" W= 2". 3/5" FROM OUTB - [SDR UIEA2022070700729](https://openairdocs.org/sdr/UIEA2022070700729), Jul 7, 2022: NONE. NONE. 4 UN-COMMANDED LEFT YAW EVENTS WHILE IN CRUISE. EICAS YAW DAMPER UPPER AND YAW DAMPER UPPER STS MSG(

PLACED UPPER YAW DAMPER ON MEL 22-21-01.

) - [SDR UIEA2019110105827](https://openairdocs.org/sdr/UIEA2019110105827), Nov 2, 2019: SKIN. BULGED. BULGE ON THE RH SIDE FUSELAGE SKIN AT STA 730, BETWEEN S-43R TO S-44R. (

REPAIRED THE DAMAGED AREA IAW SRM 53-00-01-2R-1 REPAIR 1 REV. 43 AND EI NO. T201 - [SDR UIEA2019110105828](https://openairdocs.org/sdr/UIEA2019110105828), Nov 2, 2019: SNUBBER. FAILED. FOUND R1 DOOR ROTARY SNUBBER FAIL (INDICATOR OUT OF LIMITS).(

REMOVED AND REPLACED R1 DOOR ROTARY SNUBBER ASSY IAW AMM TASK 52-11-10-004-001 REV. 96 AND TASK - [SDR UIEA2019110105829](https://openairdocs.org/sdr/UIEA2019110105829), Nov 2, 2019: SPLICE PLATE. CORRODED. CORROSION - PLATE, L/H WING L/E TO FRONT SPAR CAVITY AT OLES 1545.50.(

REMOVED DAMAGED PART IAW SRM 51-40-02 REV. 43. FABRICATED NEW PART IAW EI NO T2019P57M- - [SDR UIEA2019090805456](https://openairdocs.org/sdr/UIEA2019090805456), Sep 9, 2019: LIGHT. INOPERATIVE. MAIN DECK CEILING EMERGENCY LIGHT LEFT SIDE APPROX 430 INOP. RELAMPED, TESTED GOOD. - [SDR UIEA201908215228](https://openairdocs.org/sdr/UIEA201908215228), Aug 19, 2019: TRU. ARCED. #4 AC DISTRIBUTION CB TRIPPED AFTER TAKEOFF, 500'. MULTIPLE MALFUNCTIONS. FOUND SIGNS OF ELECTRICAL ARCING AT THE #4 AC DISTRIBUTION CB AND #4 TR/CB. REMOVED AN - [SDR UIEA2019081905214](https://openairdocs.org/sdr/UIEA2019081905214), Aug 18, 2019: CIRCUIT BREAKER. TRIPPED. AC DIST CB 3C4 TRIPPED IN FLIGHT, MULTIPLE MALFUNCTIONS. AFTER TURNING OFF AC POWER, CLEANED AND INSPECTED INSIDE OF P6 PANEL AREA PER AMM 20-60-02-04. AFTER TU - [SDR UIEA2018080301620](https://openairdocs.org/sdr/UIEA2018080301620), Aug 3, 2018: RVDT. FAULTY. UPPER EICAS "FLAPS DRIVE" MESSAGE. TRAILING EDGE FLAPS STATUS MSG. FOUND RIGHT HAND OUTBOARD RVDT INDICATION FLUCTUATES. REMOVED AND REPLACED OUTBOARD RVDT IAW - [SDR UIEA2018062601256](https://openairdocs.org/sdr/UIEA2018062601256), Jun 22, 2018: SKIN. BROKEN. CRACK AND BROKEN ON NR 4 PYLON RIGHT SIDE ACCESS DOOR SURROUND SKIN AND DOUBLER. REPAIR CRACK AREA IAW EI NO T2018A54M-2819 REV 1 2. JOB COMPLETED AND COND CHK - [SDR UIEA2018062601257](https://openairdocs.org/sdr/UIEA2018062601257), Jun 22, 2018: SEAT TRACK. CRACKED. CRACK SEAT TRACK. FWD MAIN DECK FLOOR PANEL BELOW AT BS 260, RBL 56. REPAIR SEAT TRACK IAW SRM 53-00-52 REPAIR 6 FIG 201 ALTERNATIVE 2 REV 39 AND DWG NO 1411525 - [SDR UIEA2018062601258](https://openairdocs.org/sdr/UIEA2018062601258), Jun 22, 2018: CARGO TRACK. WORN. WEAR DAMAGE ON MAIN DECK ROLLER TRAY CARGO RAIL AND ENTRANCE GUIDES AT BL98.20. ACCOMPLISHED EI NR T2018A53M-3252 REV 0. JOB COMPLETED AND COND CHK NML. - [SDR UIEA2018062601261](https://openairdocs.org/sdr/UIEA2018062601261), Jun 22, 2018: SKIN. CORRODED. CORROSION ON NR 3 ENG LT CORE COWL SKIN BETWEEN INSTA 222..5 AND INSTA 230.5. RMV CORROSION PANEL IAW SRM 51-40-02-06-0 REV 39. INSTALL NEW PANEL AND REPAIR COR - [SDR UIEA2018062601262](https://openairdocs.org/sdr/UIEA2018062601262), Jun 22, 2018: MOTOR. FAILED. THE RT WLG ALTERNATE EXTENSION MOTOR FUNCTION TEST FAIL. IAW AMM 32-36-01-004 REV92 AND AMM32-36-01-404-009 REV92 RPL RT WLG ALTERNATE EXTENSION MOTOR 2. IAW AM - [SDR UIEA2018062601263](https://openairdocs.org/sdr/UIEA2018062601263), Jun 22, 2018: BATTERY. DISCHARGED. FOUND EMER SLIDE LIGHT AT M/D L1 DOOR INOP. IAW AMM 33-51-06-000-801 AND 33-31-06-400-801 REV 92 REPLACED LIGHT BATTERY. IAW AMM 33-51-00-T151-105 REV 92 REV 92 - [SDR UIEA2018062601264](https://openairdocs.org/sdr/UIEA2018062601264), Jun 22, 2018: BATTERY. DISCHARGED. FOUND M/D EMERGENCY LIGHT INOP. IAW AMM 33-51-07--902-001-001 REV 92 REPLACED 3 EMERGENCY LIGHT POWER SUPPLY BATTERIES AND CONDITION CHECK NORMAL. IAW AMM 33-51 - [SDR UIEA2016121901032](https://openairdocs.org/sdr/UIEA2016121901032), Dec 16, 2016: WEB. CRACKED. CRACK ON WEB OF MAIN DECK CARGO FLOOR NEAR BS1790 LBL 101. REPAIR THE DAMAGE AREA IAW EI T2016-A53M2862 REV 1. - [SDR UIEA2016121901033](https://openairdocs.org/sdr/UIEA2016121901033), Dec 16, 2016: ACTUATOR. INOPERATIVE. THE RT MLG ALTERNATE EXTENSION ACTUATOR CANNOT SHUT OFF IAW AMM 32-36-01-004-001 AND AMM 32-36-01-404-009 REV 87. STEP 3A - 3F REPLACED THE MLG ALTERNATE EXTENS - [SDR UIEA2016121901034](https://openairdocs.org/sdr/UIEA2016121901034), Dec 16, 2016: THERMAL SWITCH. INOPERATIVE. FOUND THERMAL SWITCH FUNCTION NOT WORKING, TOTAL 12EA.(

1) IAW AMM 26-18-02-004-001, 25-26-18-02-404-011 REV87 REPLACED THERMAL SWITCH TOTALL 12EA. 2) TRANSFE - [SDR UIEA2016121901036](https://openairdocs.org/sdr/UIEA2016121901036), Dec 16, 2016: TRANSFER VALVE. INOPERATIVE. FOUND RT WING JETTISON TRANSFER VALVE FAILED DURING GROUND TEST IAW AMM 28-31-04-004-001 REV87 AND AMM28-31-04-404-010 REV 87. REPLACED THE TRANSFER VALVE IAW A - [SDR UIEA2016121901037](https://openairdocs.org/sdr/UIEA2016121901037), Dec 16, 2016: WEB. CRACKED. CRACK ON WEB OF MAIN DECK CARGO FLOOR NEAR BS 870. LBL 101. REPAIRED IAW T2016A53M-2908 REV. 1. - [SDR UIEA2016121901038](https://openairdocs.org/sdr/UIEA2016121901038), Dec 16, 2016: SKIN. NICKED. TWO NICKS ON SEC 47 FUSELAGE SKIN NEAR BS 2340+20 AND STRINGER 101R. REPAIRED IAW T2016A53M-2846 REV. 1. All 134: https://openairdocs.org/aircraft/N747BC/reports.md ## STCs that may be installed (OpenAirDocs) (3) Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do. ### Approved for the engine (Pratt & Whitney PW4056) - [STC SE01543CH](https://openairdocs.org/stc/SE01543CH): Replace Hamilton Sundstrand P/N 778839-13, 778839-14, 778839-19, 778839-20, 778839-37, 778839-38, 816682-1, 840618-2, 880724 carbon bushings with Cook Airtomic P/N AIR22947 Slotted Entry Busing in the High Pressure Shutoff Valve. Cook Airtomic - [STC SE00053AT-D](https://openairdocs.org/stc/SE00053AT-D): Modification of fan exit guide vane, to line replaceable unit configuration. Chromalloy Gas Turbine Corp - [STC SE00131LA](https://openairdocs.org/stc/SE00131LA): Modification of the subject engines to incorporate an oil tank reservoir insulation blanket in accordance with Hi Temp Insulation Inc. Drawing List 46M1024-301, Revision N/C, dated December 5, 1995, or later FAA approved revision as an acceptable alternate to Pratt & Whitney part number 50R280-01 or 51R059-01 insulation blankets. Hi Temp Insulation Inc ## Related - Other Boeing 747-4J6 aircraft: https://openairdocs.org/model/boeing-747-4j6/aircraft.md - The Pratt & Whitney PW4056 engine: https://openairdocs.org/engine/pratt-whitney-pw4056.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.