# Boeing 747-2B5F - Type: Aircraft model (FAA registry) - Registry code: 1384839 - Manufacturer (registry): BOEING - Model: 747-2B5F - Aircraft type: Fixed wing multi engine - Category: Airplane - Engines: 4 ยท Turbo-fan - Seats: 490 - Weight class: 20,000 lb and over - Certification: Type certificated - Registered aircraft: 0 - Page: https://openairdocs.org/model/boeing-747-2b5f Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. None matched. ## Registered aircraft None registered with this model now. ## NTSB investigations None matched to aircraft with this model. ## FAA accident and incident reports None matched to aircraft with this model. ## Service difficulty reports (39) As reported by operators and repair stations, by the model named in the report. - [SDR TX9Y20110928006](https://openairdocs.org/sdr/TX9Y20110928006), Sep 27, 2011: VALVE. MALFUNCTIONED. AIRCRAFT DEPARTED AIRPORT TO PERFORM A FUNCTIONAL TEST FLT, AFTER HEAVY CHECK. ON CLIMBOUT, ACFT DEVELOPED PROBLEMS WITH THE NR 1 ENGINE NACELLE OVERHEAT RUNNIN - [SDR TX9Y20110924002](https://openairdocs.org/sdr/TX9Y20110924002), Sep 21, 2011: STRUCTURE. DAMAGED. DURING ACCOMPLISHMENT OF SB 747-54-2230 R0, FIGURE 14 ON THE STRUT STRUCTURE ASSEMBLY AT NR 3 PYLON, CRACK DAMAGE AT NUMEROUS HOLES WAS FOUND IN THE CAP SKIN AS - [SDR TX9Y20110924001](https://openairdocs.org/sdr/TX9Y20110924001), Sep 21, 2011: STRUCTURE. DAMAGED. DURING ACCOMPLISHMENT OF SB 747-54-2230 R0, FIGURE 14 ON THE STRUT STRUCTURE ASSEMBLY AT NR 2 PYLON, CRACK DAMAGE AT NUMEROUS FASTENER HOLES WAS FOUND IN THE CA - [SDR TX9Y20110921001](https://openairdocs.org/sdr/TX9Y20110921001), Sep 18, 2011: FRAME. DAMAGED. DURING INSPECTION, A DAMAGE WAS FOUND COMMONT TO A TOOL HOLE OF BULKHEAD AT STA1140, S-18R TO S-19R. AND NO ALLOWANCE DAMAGE LIMIT WAS PROVIDED IN SRM. A REPAIR - [SDR 2011F00162](https://openairdocs.org/sdr/2011F00162), Jul 7, 2011: MOUNT. CRACKED. DURING EDDY CURRENT CHECK, PYLON NR 3 REAR ENGINE MOUNT BULKHEAD OTBD UPPER AFT FRAME FOUND WITH CRACK. CRACK LENGTH APPROX 10MM. FINDING DISCOVERED DURING 'C1 - [SDR 2011F00161](https://openairdocs.org/sdr/2011F00161), Jul 7, 2011: SKIN. CRACKED. PYLON NR 3 UPPER SKIN EDGE AND FASTENER HOLES FOUND WITH CRACK DURING EDDY CURRENT CHECK. FINDING DISCOVERED DURING 'C1+C2' CHECK FROM 08 JUN 2011 TO 22 JULY 20 - [SDR 2011F00160](https://openairdocs.org/sdr/2011F00160), Jul 7, 2011: MOUNT. CRACKED. CRACK DETECTED DURING LOW FREQUENCY EDDY CURRENT CHECK ON NR3 PYLON REAR ENGINE MOUNT BULKHEAD UPPER CAP SKIN STRAP ADJACENT TO FRONT SPAR FITTING. FINDING DISC - [SDR 2011F00159](https://openairdocs.org/sdr/2011F00159), Jul 7, 2011: MOUNT. CRACKED. CRACKS FOUND ON NR 2 PYLON REAR ENGINE MOUNT UPPER BULKHEAD INBD AND OTBD FRAME HORIZ FLANGE. EACH CRACK APPROX 0.500" IN LENGTH. FINDING DISCOVERED DURING 'C1 - [SDR Q2SA2011F00081](https://openairdocs.org/sdr/Q2SA2011F00081), May 11, 2011: VALVE. MALFUNCTIONED. WITH NR 4 CROSS FEED VALVE INDICATING "OPEN", NR 4 TANK (QTY) WENT DOWN AS IF CROSSFEED VALVE WAS CLOSED. NR 4 TANK BOOST PUMP LOW PRESSURE LIGHTS DID NOT FLASH - [SDR Q2SA708003](https://openairdocs.org/sdr/Q2SA708003), Aug 25, 2010: HYDRAULIC LINE. RUPTURED. SHORTLY AFTER TAKEOFF THE CREW CALLED IN TO NOTIFY, HAD LEFT BODY GEAR PRIMARY/ALT LIGHT ON PER QRH AND ARE RETURNING TO ORD, 110 THOUSAND POUNDS OF FUEL WAS DU - [SDR Q2SA704002](https://openairdocs.org/sdr/Q2SA704002), Apr 14, 2010: UNKNOWN. MALFUNCTIONED. AT CRUISE, NUMBER 4 ENGINE WOULD NOT ACCELERATE; ACCOMPLISHED QRH PROCEDURE: ABNORMAL ENGINE RESPONSE TO THROTTLE SETTING. ACCOMPLISHED PNEUMATIC MANIFOLD INSPE - [SDR 2010FA0000437](https://openairdocs.org/sdr/2010FA0000437), Apr 6, 2010: SKIN. CRACKED. NR 3 ENG PYLON AFT LWR SPAR FIREWALL SKIN 1.5 INCH CRACK. - [SDR 2010FA0000436](https://openairdocs.org/sdr/2010FA0000436), Apr 6, 2010: SKIN. CRACKED. NR 3 ENG LT PYLON ACCESS PANEL CRACKED. - [SDR 2010FA0000435](https://openairdocs.org/sdr/2010FA0000435), Apr 6, 2010: DOOR. CRACKED. NR 2 PYLON LT SIDE PRESSURE RELIEF DOOR CRACK (0.35 INCH). - [SDR 2010FA0000438](https://openairdocs.org/sdr/2010FA0000438), Apr 5, 2010: SKIN. DENTED. APU LT ACCESS DOOR SKIN DENT. INSTALL EXTERNAL REPAIR DOUBLER. - [SDR 2010FA0000434](https://openairdocs.org/sdr/2010FA0000434), Apr 5, 2010: SKIN. CRACKED. NR 3 ENG LT SIDE COWL SKIN CRACK. INSTALL EXTERNAL REPAIR DOUBLER. - [SDR 2010FA0000433](https://openairdocs.org/sdr/2010FA0000433), Apr 5, 2010: STIFFENER. CRACKED. CRACK WAS FOUND ON THE STIFFENER OF THE NR 3 PYLON. INSTALLATION SPLICE REPAIR ANGLES. - [SDR 2010FA0000432](https://openairdocs.org/sdr/2010FA0000432), Apr 5, 2010: SKIN. CRACKED. NR 4 PYLON AFT FAIRING DOOR LT SIDE CRACKED. BONDING EXTERNAL REPAIR DOUBLER. - [SDR 2010FA0000431](https://openairdocs.org/sdr/2010FA0000431), Apr 5, 2010: LONGERON. CRACKED. NR 3 ENG LT SIDE COWL UPPER LONGERON CRACK. INSTALL REPAIR DOUBLER. - [SDR 2010F00082](https://openairdocs.org/sdr/2010F00082), Jan 14, 2010: FRAME. CRACKED. (KADY) CRACK AT FLANGE OF INNER CHORD OF BS 2598 BULKHEAD. MAJOR REPAIR ACCOMPLISHED BY TRIM OUT THE CRACKED CHORD AND INSTALL REPAIR PART INCLUDING SPLICE ANGL - [SDR 2010F00079](https://openairdocs.org/sdr/2010F00079), Jan 13, 2010: SKIN. CRACKED. (KADY) CRACK WAS FOUND ON THE SKIN OF THE NR 3 ENGINE RT SIDE COWL AT NAC STA 225.95. - [SDR 2010FA0000360](https://openairdocs.org/sdr/2010FA0000360), Aug 8, 2008: SKIN. WORN. (KADY) WEAR DAMAGE WAS FOUND ON THE CAP SKIN OF THE NR 4 PYLON AT NAC STA 210.00-221.90 NAC WL 187.63-190.68. - [SDR 2010FA0000359](https://openairdocs.org/sdr/2010FA0000359), Aug 8, 2008: SKIN. WORN. (KADY) WEAR DAMAGE WAS FOUND ON THE CAP SKIN OF THE NR 1 PYLON AT NAC STA 210.00-221.90 WL 187.63-190.60. - [SDR 2010FA0000358](https://openairdocs.org/sdr/2010FA0000358), Aug 5, 2008: FRAME. CRACKED. (KADY) A CRACK WAS FOUND ON THE FRAME AT STA 1680, S13R-S14R. - [SDR 2010FA0000357](https://openairdocs.org/sdr/2010FA0000357), Aug 5, 2008: FLOORBEAM. DAMAGED. (KADY) AN ELONGATED FASTENER HOLE WAS FOUND ON THE UPPER DECK FLOORBEAM UPPER CHORD AT STA 380, LBL 22/12. - [SDR 2010FA0000333](https://openairdocs.org/sdr/2010FA0000333), Jul 17, 2008: COWLING. DELAMINATED. (KADY) DELAMINATION ON THE NR 2 ENG NOSE COWL. MINOR REPAIR ACCOMPLISHED BY FABRICATE REPAIR DOUBLER, STRAP AND CURE AFTER BOND. - [SDR 2010FA0000332](https://openairdocs.org/sdr/2010FA0000332), Jul 14, 2008: SEAT TRACK. WORN. (KADY) ENLARGE THE MAIN DECK SEAT TRACK PIN HOLE AT SEC 44 AND 46. MAJOR REPAIR ACCOMPLISHED BY OVERSIZE REAM AND INSTALL FREEZE PLUG BUSH. - [SDR 2010FA0000331](https://openairdocs.org/sdr/2010FA0000331), Jul 12, 2008: SEAT TRACK. CORRODED. (KADY) CORROSION AT SEAT TRACK BS 1500, RBL 98.58. MAJOR REPAIR ACCOMPLISHED BY BLEND OUT OF CORROSION AND FABRICATE AND INSTALL A REPAIR STRAP. - [SDR 2010FA0000356](https://openairdocs.org/sdr/2010FA0000356), Jul 9, 2008: SEAT TRACK. WORN. (KADY) ENLARGE THE MAIN DECK SEAT TRACK PIN HOLE AT SEC 42. MAJOR REPAIR ACCOMPLISHED BY OVERSIZE REAM AND INSTALL FREEZE PLUG BUSH. - [SDR 2010F00085](https://openairdocs.org/sdr/2010F00085), Jul 4, 2008: SKIN. DAMAGED. (KADY) AN ENLARGED HOLE WAS FUND ON THE OTBD SKIN AT NAC STA 286.50. - [SDR 2010FA0000355](https://openairdocs.org/sdr/2010FA0000355), Jul 1, 2008: SKIN. CORRODED. (KADY) CORROSION AT NR 1 PYLON OTBD CAP SKIN. MINOR REPAIR ACCOMPLISHED BY BLEND OUT THE CORROSION AND APPLY FINISH TREATMENT. - [SDR 2010F00083](https://openairdocs.org/sdr/2010F00083), Jul 1, 2008: SKIN. CORRODED. (KADY) CORROSION AT NR 4 PYLON OTBD CAP SKIN. MINOR REPAIR ACCOMPLISHED BY BLEND OUT THE CORROSION AND APPLY FINISH TREATMENT. - [SDR 2010F00084](https://openairdocs.org/sdr/2010F00084), Jun 30, 2008: SKIN. CRACKED. (KADY) CRACK WAS FOUND NR 3 PYLON INBD SKIN. - [SDR 2010FA0000354](https://openairdocs.org/sdr/2010FA0000354), Jun 24, 2008: FLOORBEAM. CRACKED. (KADY) CRACK AT FLOORBEAM WEB AT UPPER DECK BS 340, 400, AND 500. MAJOR REPAIR ACCOMPLISHED BY TRIM OUT THE CRACKED FLOORBEAM AND INSTALL REPAIR FILLER AND REPA - [SDR 2010FA0000351](https://openairdocs.org/sdr/2010FA0000351), Jun 10, 2008: SKIN. WORN. (KADY) WORN AT OUTER SKIN AND FLANGE OF FRAME. MINOR REPAIR ACCOMPLISHED BY TRIM OF DAMAGED SKIN AND FRAME AND INSTALL FILER AND REPAIR ANGLE AND REPAIR DOUBLER - [SDR 2010FA0000353](https://openairdocs.org/sdr/2010FA0000353), Jun 9, 2008: SKIN. WORN. (KADY) WORN AT OUTER SKIN AND STIFFENER OF NR 4 LT SIDE COWL. MONOR REPAIR ACCOMPLISHED BY TRIM OUT THE DAMAGED SKIN AND STIFFENER AND INSTALL REPAIR DOUBLER. - [SDR 2010FA0000352](https://openairdocs.org/sdr/2010FA0000352), Jun 9, 2008: SKIN. PUNCTURED. (KADY) PUNCTURE OF NR 4 ENGINE LT SIDE FAN COWL INNER SKIN. MINOR REPAIR ACCOMPLISHED BY TRIM OUT THE DAMAGED SKIN AND INSTALL FILLER AND REPAIR DOUBLER. - [SDR 2010FA0000350](https://openairdocs.org/sdr/2010FA0000350), May 23, 2008: FAIRING. CRACKED. (KADY) NR 1, 3 AND 4 ENG SLOT SEAL FAIRING FASTENER HOLES WORN. MINOR REPAIR ACCOMPLISHED BY OVERSIZE, THE AFFECTED HOLES AND INSTALL NEW GROMMET ASSY. - [SDR Q2SA708001](https://openairdocs.org/sdr/Q2SA708001), Apr 7, 2008: FUEL CONTROL. MALFUNCTIONED. ATB AT ANC DUE TO ENGINE PROBLEM. NR 4 ENGINE STALLED DURING CLIMB AT 33,600 FT. REDUCED THRUST TO IDLE. IDLE PARAMETERS N1 37 PERCENT, N2 61 PERCENT, EPR ERRAT --- 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.