# Service difficulty reports: Boeing 747-4B5F A list on [Boeing 747-4B5F](https://openairdocs.org/model/boeing-747-4b5f.md). Newest first. General aviation reporting is voluntary. Page 1 of 14 · 664 reports - [SDR KCSA2026101361](https://openairdocs.org/sdr/KCSA2026101361.md): Door · no discrepancy · Oct 13, 2026 · N705CK · Boeing 7474B5F · Emergency Exits > DOOR F/D OVHD. INSPECTED AND OPS CHECK F/D OVHD DOOR IAW AMM 52-21-00. OPS CHECK GOOD, NO DEFECTS NOTED. - [SDR KCSA202609291222](https://openairdocs.org/sdr/KCSA202609291222.md): Support · damaged · Sep 29, 2026 · N702CK · Boeing 7474B5F · Fuselage Miscellaneous Structure > CENTER HINGE LWR SUPPORT CHORD DAMAGED ON LEFT SIDE NLG - [SDR KCSA202609291221](https://openairdocs.org/sdr/KCSA202609291221.md): Support · damaged · Sep 29, 2026 · N702CK · Boeing 7474B5F · Fuselage Miscellaneous Structure > FWD HINGE LWR SUPPORT CHORD DAMAGED ON LEFT SIDE NLG - [SDR KCSA2026092757](https://openairdocs.org/sdr/KCSA2026092757.md): Bearing · faulted · Sep 27, 2026 · N713CK · Boeing 7474B5F · Trailing Edge Flap Control System > FLAPS DRIVE EICAS QRH. R & R TORQUE TUBE SUPPORT BEARING ASSY ON RT WING BETWEEN WS 128.45-515 IAW AMM 27-51-20. OPS CHECK IAW AMM 27-51-00. OPS CHECK GOOD NO DEFECTS NOTED. - [SDR KCSA2026092755](https://openairdocs.org/sdr/KCSA2026092755.md): Warning Message · false activation · Sep 27, 2026 · N715CK · Boeing 7474B5F · Door Warning System > DOOR F/D OVHD ADVISORY. PERFORMED OPS CHECK FOR CREW COMPARTMENT OVERHEAD HATCH IAW AMM 52-21-00. OPS CHECK GOOD. NO DEFECTS NOTED. - [SDR KCSA202609091207](https://openairdocs.org/sdr/KCSA202609091207.md): Web · cracked · Sep 9, 2026 · N713CK · Boeing 7474B5F · Wing Miscellaneous Structure > DURING W/O 713028794 SURFACE HFEC INSPECTION AT RT WBL 432.65 FIXED RIB WB, CRACK FOUND. - [SDR KCSA202609091206](https://openairdocs.org/sdr/KCSA202609091206.md): Skin · damaged · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Main, Plate/Skin > FOUND LIGHTNING STRIKE DAMAGES ON THE UPPER FUSELAGE AREA BS 600 S-0 TO S-1L ( 2 SPOTS). - [SDR KCSA202609091205](https://openairdocs.org/sdr/KCSA202609091205.md): Skin · damaged · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Main, Plate/Skin > FOUND A LIGHTNING STRIKE DAMAGE ON THE UPPER FUSELAGE AREA. STA 680 TO 700, S-0 TO S-1R - [SDR KCSA202609091204](https://openairdocs.org/sdr/KCSA202609091204.md): Frame · cracked · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Main, Frame > DURING EO 5312-21-02 OPEN HOLE HFEC INSPECTION, A CRACK SIGNAL INDICATION ON FRAME AT BS 860 RT 3 EA HOLE. - [SDR KCSA202609091203](https://openairdocs.org/sdr/KCSA202609091203.md): Tension Tie · cracked · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Main, Structure > DURING EO 5312-21-02 INSPECTION, A CRACK WAS FOUND IN THE RT 860 TENSION TIE FWD CHANNEL. - [SDR KCSA202609091202](https://openairdocs.org/sdr/KCSA202609091202.md): Tension Tie · cracked · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Miscellaneous Structure > DURING OPEN HOLE INSPECTION, EO 5312-21-02, CRACK SIGNAL INDICATION AT L/H STA 860 3 EA FRAME HOLE - [SDR KCSA202609091201](https://openairdocs.org/sdr/KCSA202609091201.md): Frame · cracked · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Main, Frame > DURING OPEN HOLE HFEC INSPECTION, CRACK SIGNAL INDICATIONAT LT BS 840 FRAME AND CHORD 3EA, FWD DOUBLER 1 EA, AFT DOUBLER 1 EA. - [SDR KCSA202609091200](https://openairdocs.org/sdr/KCSA202609091200.md): Tension Tie · cracked · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Main, Structure > DURING EO 5312-21-02 INSPECTION, A CRACK WAS FOUND IN THE LT BS 860 TENSION TIE FWD CHANNEL - [SDR KCSA202609091199](https://openairdocs.org/sdr/KCSA202609091199.md): Tension Tie · cracked · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Main, Structure > DURING EO 5312-21-02 INSPECTION, A CRACK WAS FOUND IN THE LT 840 TENSION TIE FWD CHANNEL. - [SDR KCSA202609091198](https://openairdocs.org/sdr/KCSA202609091198.md): Tension Tie · cracked · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Main, Structure > ONE HOLE CRACK INDICATION FOUND DURING OPEN HOLE HFEC INSPECTION OF THE LT BS 820 AFT CHANNEL. - [SDR KCSA202609091197](https://openairdocs.org/sdr/KCSA202609091197.md): Tension Tie · cracked · Sep 9, 2026 · N713CK · Boeing 7474B5F · Fuselage Main, Structure > DURING OPEN HOLE HFEC INSPECTION, CRACK SIGNAL INDICATIONAT LT BS 720 FWD CHANNEL. - [SDR KCSA2026090854](https://openairdocs.org/sdr/KCSA2026090854.md): Battery · inoperative · Sep 8, 2026 · N713CK · Boeing 7474B5F · Emergency Lighting > TWO EMERGENCY LIGHTS INOPERATIVE ON CEILING TOWARDS REAR OF CABIN AREA. REMOVED & REPLACED BATTERY POWER SUPPLY, ALL CHECKS GOOD IAW AMM 33-51-04. - [SDR KCSA2026083052](https://openairdocs.org/sdr/KCSA2026083052.md): Actuator · damaged · Aug 30, 2026 · N702CK · Boeing 7474B5F · Landing Gear Actuator > HYD PRESS SYS 1. FOUND NLG DOOR ACTUATOR RAM HOUSING BROKEN. REMOVED & REPLACED NLG DOOR ACTUATOR ASSEMBLY IAW AMM 32-34-14. SERVICED NR 1 HYD SYS. ALL CHECKS GOOD. NO DEFECTS NOTED. ALTN GEAR EXTEND. RESET P2-3 PANEL ALTN GEAR EXTEND SWITCHES IAW AMM 32- - [SDR KCSA2026083051](https://openairdocs.org/sdr/KCSA2026083051.md): Seal · faulted · Aug 30, 2026 · N715CK · Boeing 7474B5F · Passenger/Crew Doors > ADV MSG DOOR F/D OVHD DESCENDING FL300. MEL 52-73-01. CAT C ITEM, DUE 9/10/26, PLACARDS INSTALLED. TRANSFERRED TO DMI #100351457 BY MXC IAW MEL 52-73-01. CAT C ITEM, DUE 9/1/26, PLACARDS INSTALLED. OVHD DOOR SEAL INOPERATIVE, ADJUSTED S2312 IAW WDM 52-71-1 - [SDR KCSA2026082650](https://openairdocs.org/sdr/KCSA2026082650.md): Scavenge Tube · leaking · Aug 26, 2026 · N712CK · Boeing 7474B5F · Aircraft Fuel Distribution System > FUEL IMBALANCE MAIN 2 MAIN 3. MAIN 2 13,000LBS MORE THAN MAIN 3. RAN QRH. PERFORMED M2/M3 FUEL MANIFOLD LEAK TEST IAW B747 FIM 28-20 TASK SUPPORT. M2/M3 FUEL MANIFOLD LEAK TEST NOTED 200LBS/4 MIN LEFT CUT MANIFOLD LEAK TEST NOTED 100LBS/4 MIN M2 REFUEL/JETT - [SDR KCSA2026082549](https://openairdocs.org/sdr/KCSA2026082549.md): Warning Message · false activation · Aug 25, 2026 · N716CK · Boeing 7474B5F · Door Warning System > DOOR F/D OVHD. CABIN PRESSURE NORMAL. PERFORMED OPS CHECK IAW AMM 52-21-00. OPS CHECK GOOD. ACFT OK FOR SERVICE. - [SDR KCSA202608191195](https://openairdocs.org/sdr/KCSA202608191195.md): Lamp · inoperative · Aug 19, 2026 · N705CK · Boeing 7474B5F · Emergency Lighting > MAIN ENTRY L1 DOOR FWD EMERGENCY LIGHT INOPERATIVE. - [SDR KCSA202608041105](https://openairdocs.org/sdr/KCSA202608041105.md): Angle · cracked · Aug 4, 2026 · N706CK · Boeing 7474B5F · Wing Miscellaneous Structure > NR 5 LT OTBD AILERON HINGE FITTING LOWER ANGLE CRACKED AT FWD END. APPROX WS 1310 - [SDR KCSA202608030146](https://openairdocs.org/sdr/KCSA202608030146.md): Warning Message · illuminated · Aug 1, 2026 · N715CK · Boeing 7474B5F · Fixed Inner Doors > DOOR F/D OVHD. CLOSED OVHD F/D DOOR IAW B747 AMM 52-21-00 STATUS CLEARED. - [SDR KCSA2026073045](https://openairdocs.org/sdr/KCSA2026073045.md): Door · unlatched · Jul 30, 2026 · N702CK · Boeing 7474B5F · Fixed Inner Doors > DOOR F/D OVHD ADVISORY. FOUND DOOR NOT LATCHED ALL THE WAY. LATCHED IAW B747 FIM 52-71 TASK 828. OPS CHECK GOOD. - [SDR KCSA2026072744](https://openairdocs.org/sdr/KCSA2026072744.md): Elec Connector · loose · Jul 27, 2026 · N701CK · Boeing 7474B5F · Door System Wiring > DOOR ENTRY L5 ADVISORY IN FLIGHT ACCOMPLISHED QRH PROCEDURE. PRESSURIZATION NORMAL. TRANSFERRED TO DMI 100338109 IAW KA MEL 52-73-01. CAT C. DUE 8.6.26. M PROCEDURES CW. PLACARDS INSTALLED. REF TO DMI #100338109, L5 DOOR INDICATION INOP. CORRECTIVE ACTION: - [SDR KCSA2026072643](https://openairdocs.org/sdr/KCSA2026072643.md): Door · no discrepancy · Jul 26, 2026 · N701CK · Boeing 7474B5F · Passenger/Crew Doors > DOOR ENTRY L5. VERIFIED #5 ENTRY DOOR WARN SWITCH IAW B747-400 AMM 52-11-01. OPS CHECK GOOD. - [SDR KCSA2026071439](https://openairdocs.org/sdr/KCSA2026071439.md): Warning Message · false activation · Jul 14, 2026 · N715CK · Boeing 7474B5F · Door Warning System > DOOR F/D OVHD (IN CLIMB). PERFORMED OPERATIONAL CHECK IAW AMM 52-71-00. NO DEFECTS NOTED. - [SDR KCSA2026070938](https://openairdocs.org/sdr/KCSA2026070938.md): Door · faulted · Jul 9, 2026 · N715CK · Boeing 7474B5F · Emergency Exits > DOOR F/D OVHD. RESET OVHD DOOR IAW AMM 52-21-00. NO FURTHER DEFECTS. - [SDR KCSA2026062335](https://openairdocs.org/sdr/KCSA2026062335.md): Warning Message · false activation · Jun 23, 2026 · N705CK · Boeing 7474B5F · Door Warning System > DOOR F/D OVHD. OPENED AND CLOSED OVERHEAD HATCH, VERIFIED LATCHES TO BE OPERATING NORMAL IAW AMM 52-21-00. NO DEFECTS NOTED. - [SDR KCSA20260619733](https://openairdocs.org/sdr/KCSA20260619733.md): Oil System · low · Jun 17, 2026 · N706CK · Boeing 7474B5F · Turbine Engine Oil System > ON DESCENT NOTICED STRONG ODOR OF OIL ON UPPER DECK AND MAIN DECK CREW REPORTED LOW OIL ON ENG 4, INDICATED 4 QUARTS. PERFORMED CONDITIONAL INSPECTION OF #4 ENG IAW FIM 21-00 TASK 810 NO EXTERNAL LEAKS FOUND. SERVICED ENG OIL IAW AMM 12-13-03. - [SDR KCSA2026061532](https://openairdocs.org/sdr/KCSA2026061532.md): Warning Message · false activation · Jun 15, 2026 · N715CK · Boeing 7474B5F · Emergency Exits > DOOR F/D OVHD ADVISORY MSG AT 24600 LEVEL, PX NORMAL. CYCLED F/D OVHD DOOR IAW AMM 52-00-00. ADVISORY CLEARED. DOOR INDICATING CLOSED. - [SDR KCSA202606041079](https://openairdocs.org/sdr/KCSA202606041079.md): Rib · damaged · Jun 4, 2026 · N712CK · Boeing 7474B5F · Horizontal Stabilizer, Spar/Rib > R/H HORIZONTAL STAB CLOSURE RIB AT STAB BL 421.5 UPPER CHORD HAS EVIDENCE OF LIGHTNING STRIKE AT FASTENER HOLES APPROX 2 AND 4 INCHES AFT OF STAB L/E. - [SDR KCSA202606041078](https://openairdocs.org/sdr/KCSA202606041078.md): Rib · damaged · Jun 4, 2026 · N712CK · Boeing 7474B5F · Horizontal Stabilizer, Spar/Rib > R/H HORIZONTAL STAB CLOSURE RIB AT STAB BL 421.5 HAS EVIDENCE OF LIGHTNING STRIKE ON LOWER CHORD AT FASTENER HOLE APPROX 2 INCHES AFT OF STAB L/E. - [SDR KCSA202606031077](https://openairdocs.org/sdr/KCSA202606031077.md): Sign · inoperative · Jun 3, 2026 · N712CK · Boeing 7474B5F · Emergency Lighting > FOUND EMERGENCY SIGN OVER THE UPPER DECK CREW SERVICE DOOR TO BE INOP. - [SDR KCSA202606031076](https://openairdocs.org/sdr/KCSA202606031076.md): Rib · damaged · Jun 3, 2026 · N712CK · Boeing 7474B5F · Trailing Edge Flaps > INNERMOST RIB IS DAMAGED WHERE LOWER SPRING TUBE OF ACCORDIAN SEAL COMES THROUGH ON THE RT INBD FOREFLAP - [SDR KCSA202606031075](https://openairdocs.org/sdr/KCSA202606031075.md): Stringer · cracked · Jun 3, 2026 · N712CK · Boeing 7474B5F · Fuselage Main, Longeron/Stringer > FUSELAGE STRINGER 3AR FOUND TO HAVE 2EA. CRACKED HOLES AT STA 499 - [SDR KCSA202606031074](https://openairdocs.org/sdr/KCSA202606031074.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 545BB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031073](https://openairdocs.org/sdr/KCSA202606031073.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 544AB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031072](https://openairdocs.org/sdr/KCSA202606031072.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 553BB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031071](https://openairdocs.org/sdr/KCSA202606031071.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 553EB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031070](https://openairdocs.org/sdr/KCSA202606031070.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 552GB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031069](https://openairdocs.org/sdr/KCSA202606031069.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 552FB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031068](https://openairdocs.org/sdr/KCSA202606031068.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 552EB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031067](https://openairdocs.org/sdr/KCSA202606031067.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 552DB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031066](https://openairdocs.org/sdr/KCSA202606031066.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 552CB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031065](https://openairdocs.org/sdr/KCSA202606031065.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 552BB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031064](https://openairdocs.org/sdr/KCSA202606031064.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 552AB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031063](https://openairdocs.org/sdr/KCSA202606031063.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 545AB HAS EVIDENCE OF CORROSION - [SDR KCSA202606031062](https://openairdocs.org/sdr/KCSA202606031062.md): Skin · corroded · Jun 3, 2026 · N712CK · Boeing 7474B5F · Wing, Plate/Skin > LEFT WING FUEL TANK ACCESS CUTOUT 546BB HAS EVIDENCE OF CORROSION Next page: https://openairdocs.org/model/boeing-747-4b5f/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 aircraft_model_key = '7474B5F' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/model/boeing-747-4b5f/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.