Boeing 747-446

Service difficulty reports · 932

Newest first. General aviation reporting is voluntary.

Query with SQL
duckdb -csv -c "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 = '747446'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR 9WGA2026101234402Hmu · faultedLOG PAGE 251714, ITEM 1, ENGINE #4 LOST THRUST IN CRUISE N1, 32% FUEL FLOW 0.3 ALL ENGINE INDICATIONS WERE NORMAL IN DESCENT AT LOW ENGINE POWER EICAS ENGINE FAIL MSG SHOWED WITH OIL PRESS GETTING LOW PROPTING PRECAUTIONARY SHUTDOWN, AFTER ARRIVAL TO ANC, MAINOct 10, 2026 · N344KD · Boeing 747446 · Fuel Controlling SystemSDR KCSA202610071224Power Supply · inoperativeL/H UPPER DECK SLIDE DOOR EMERGENCY LIGHT INOPOct 7, 2026 · N742CK · Boeing 747446 · Emergency LightingSDR KCSA202610071223Light · inoperativeCENTER AFT EMERGENCY LIGHT BY GALLEY IS INOP.Oct 7, 2026 · N742CK · Boeing 747446 · Emergency LightingSDR KCSA2026082348Pcb · unserviceableFIRE WARNING BELL AND MASTER WARNING DURING CLIMB OUT. NO FIRE LIGHTS OR EICAS. REMOVED AND REPLACED 1AD04 CARGO FIRE AFT DIODE CIRCUIT CARD ASSY IAW KA AMM 26-10-01. PERFORMED OPS TEST IAW KA B747-400 AMM 26-16-10. OPS TEST GOOD. NO DEFECTS NOTED.Aug 23, 2026 · N742CK · Boeing 747446 · Detection SystemSDR U2RA2026071400036Indicator · no discrepancyAIRSPEED UNRELIABLE. PERFORM OPS TEST IAW AIRCRAFT MAINTENANCE MANUAL 34-12-00. NO FAULTS NOTED. AIRCRAFT EXPERIENCED AN EQUIPMENT COOLING FAILURE PRIOR TO THE AIRSPEED BECOMING UNRELIABLE.Jul 12, 2026 · N936CA · Boeing 747446 · Airspeed/Mach IndicatorSDR KCSA202607021099Floor Support · crackedMAIN DECK FLOOR SUPPORT LOWER CHORD AT STA 1220 RBL 98 IS CRACKEDJul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous StructureSDR KCSA202607021098Power Supply · no testEMERGENCY LIGHT OVER L1 FAILED LIGHT TESTJul 2, 2026 · N742CK · Boeing 747446 · Emergency LightingSDR KCSA202607021097Shear Web · crackedMAIN DECK FLOOR STATION 140-160 LBL 40 SHEAR WEB CRACKED MULTIPLE LOCATIONSJul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous StructureSDR KCSA202607021096Slide · unwanted deployDURING TROUBLESHOOTING OF ARM/ DISARM HANDLE OF L/H UPPER DECK DOOR , THE EMERGENCY ESCAPE SLIDE WAS UNINTENTIONALLY DEPLOYED AND REQUIRES REPLACEMENTJul 2, 2026 · N742CK · Boeing 747446 · Escape SlideSDR KCSA202607021095Skin · corrodedMAIN DECK CENTER FUEL TANK UPPER SKIN CORROSION STA 1050 LBL 80-100Jul 2, 2026 · N742CK · Boeing 747446 · Fuel StorageSDR KCSA202607021094Skin · corrodedEVIDENCE OF CORROSION FOUND ON CENTER TANK UPPER SKIN AT STA 1150 RBL 110Jul 2, 2026 · N742CK · Boeing 747446 · Fuel StorageSDR KCSA202607021093Skin · corrodedEVIDENCE OF CORROSION FOUND ON CENTER TANK UPPER FWD SKIN SECTION AT BS 1139, RBL 100.Jul 2, 2026 · N742CK · Boeing 747446 · Fuel StorageSDR KCSA202607021092Skin · corrodedEVIDENCE OF CORROSION FOUND ON CENTER TANK UPPER SKIN AT STA 1140 RBL 100Jul 2, 2026 · N742CK · Boeing 747446 · Fuel StorageSDR KCSA202607021091Skin · corrodedEVIDENCE OF CORROSION FOUND ON CENTER TANK UPPER SKIN FWD OF TENSION FITTING AT STA 1180 RBL 98Jul 2, 2026 · N742CK · Boeing 747446 · Fuel StorageSDR KCSA202607021090Stiffener · damagedL/H WING T/E STIFFENER ON AFT SIDE OF AFT SPAR AT WBL 1150 DAMAGED.Jul 2, 2026 · N742CK · Boeing 747446 · Wing Miscellaneous StructureSDR KCSA202607021089Frame · crackedNOSE RADOME O/B RING ANGLE CRACKED AT APPROX 11 O'CLOCK POSITIONJul 2, 2026 · N742CK · Boeing 747446 · Fuselage Main, FrameSDR KCSA202607021088Floor Support · crackedFLIGHT DECK R/H UPPER SILL OUTER CHORD CRACKED AT STA 315 JUST ABOVE R2 WINDOWJul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous StructureSDR KCSA202607021087Shear Web · crackedMAIN DECK FLOOR BS 160-180 LBL 48, SHEAR WEB CRACKED.Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous StructureSDR KCSA202607021086Shear Web · crackedMAIN DECK FLOOR STA 140-160 RBL 40, SHEAR WEB CRACKED MULTIPLE LOCATIONSJul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous StructureSDR KCSA202607021085Angle · crackedMAIN DECK AT STA 2360 LBL 33 JUST BELOW FLOOR LEVEL ANGLE SUPPORT CRACKED.Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous StructureSDR KCSA202607021084Angle · crackedMAIN DECK AT BS 2360, RBL 33 JUST BELOW FLOOR LEVEL ANGLE SUPPORT CRACKED.Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous StructureSDR KCSA202607021083Depressor · crackedRT UPPER DECK DOOR FWD UPPER CORNER SEAL DEPOESSOR CRACKEDJul 2, 2026 · N742CK · Boeing 747446 · Fuselage Main, StructureSDR KCSA202607021082Floorbeam · crackedCRACK FOUND ON MAIN DECK FLOORBEAM CLIP AT STA 280 LBL 6.Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Main, Floor BeamSDR KCSA202607021081Depressor · crackedLEFT UPPER DECK DOOR AFT UPPER CORNER SEAL DEPRESSOR CRACKEDJul 2, 2026 · N742CK · Boeing 747446 · Fixed Inner DoorsSDR KCSA202607021080Shear Tie · crackedCRACK FOUND IN BS 1000 FRONT SPAR SHEAR TIE AT RBL 33.99Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Internal Mounting StructureSDR U2RA2026061900030Slide · deployedLEFT UPPER DECK DOOR SLIDE DID NOT FULLY DEPLOY WHEN INADVERTANTLY ACTIVATED. REPLACED DOOR SLIDE ASSEMBLY PER AIRCRAFT MAINTENANCE MANUAL 25-68-01.Jun 10, 2026 · N936CA · Boeing 747446 · Escape SlideSDR KCSA2026052229Switch · faultedSTAB TRIM 2, STAB TRIM 3, EMERGENCY DECLARED FOR STAB TRIM 2 & 3. REMOVED AND REPLACED CAPTAINS STAB MANUAL TRIM CTRL WHEEL SWITCH IAW AMM 27-41-11 AND WDM 27-41-11. OPS CHECKS GOOD. AUTOLAND UNIQUE GROUND TEST PASSED IAW AMM 22-10-00. THIS A/C REMAINS CAT IMay 22, 2026 · N745CK · Boeing 747446 · Stabilizer Position IndicatingSDR 9WGA2026052134401Buss Protection · faultyAFTER TAKE-OFF FROM NRT, INDICATION, AC BUS 1 FAIL, RETURNED TO NRT, MAINTENANCE PERFORMED PER FIM 24-23 TASK 812, REMOVED AND REPLACED BCU, TESTED EPGS (GCU1) AND EPGS 2 (GCU2) GROUND TEST COMPLIED WITH, TEST PASSED.May 21, 2026 · N344KD · Boeing 747446 · AC Power Distribution SystemSDR KCSA2026042123Battery Pack · discharged100320914: RIGHT SIDE UPPER DECK DOOR EMERGENCY OPENING SYS BATTERY PACK DEAD A/T: ITEM TRANSFERRED TO DMI #100320914 CAT C DUE 5/1/26 M PROCEDURE COMPLIED WITH IAW B747 MEL 52-23-1-3A PLACARDS INSTALLED. REF DMI #100320914 RH UPPER DECK DOOR BATT PACK INOP. Apr 21, 2026 · N744CK · Boeing 747446 · Emergency ExitsSDR U2RA202603090001Hydraulic Line · crackedAPPROXIMATELY 30 MINUTES AFTER TOP OF CLIMB, CRUSING AT FLIGHT LEVEL 34,000, EICAS MESSAGE "HYD QTY LOW 1" QUANTITY OBSERVED DECREASING REPIDLY ON HYD SYNOPTIC PAGE. SHORTLY AFTER, QUANTITY AT 0.00. EICAS "HYD PRESS SYS 1". NON NORMAL CHECKLIST ACTIONED. - RMar 4, 2026 · N756CA · Boeing 747446 · Hydraulic System, MainSDR U2RA2026022400031Warning Message · false activationDURING TAXI, EICAS MESSAGE FIRE APU - APU FIRE BOTTLE DISCHARGED. - UPON INSPECTION, NO EVIDENCE OF FIRE. APU PLACED ON A DEFERRED MAINTENANCE ITEM PER MINIMUM EQUIPMENT LIST 49-11-01-01.Feb 19, 2026 · N729CA · Boeing 747446 · Fire DetectionSDR KCSA202604041028Battery Pack · no testRIGHT UPPER DECK ESCAPE DOOR BATTERY PACK FAIL PUSH TO TEST LIGHT DURING A/C START UPFeb 8, 2026 · N744CK · Boeing 747446 · Emergency ExitsSDR KCSA202512051228Battery Pack · weakCENTER EMERGENCY LIGHTS ON UPPER DECK DO NOT STAY ILLUMINATED.Dec 5, 2025 · N742CK · Boeing 747446 · Emergency LightingSDR KCSA2025102269Door · no discrepancyDOOR U/D FLT LK. PERFORMED OPERATIONAL TEST IAW B747-400 AMM CHP 52-23-00. COULD NOT DUPLICATE SYS OPS CHECKS NORMAL.Oct 22, 2025 · N745CK · Boeing 747446 · Fixed Inner DoorsSDR 9WGA2025102134401Circuit Card · dirtyCONTINOUS MASTER WARNING FIRE MAIN DECK FWD INFLIGHT, TROUBLESHOT PER FIM 26-16, TASK 864, CLEAN CIRCUIT CARD PER AMM 26-10-01, FIRE SYSTEM TEST, AMM 26-11-00, PASS NO FAULTS.Oct 22, 2025 · N344KD · Boeing 747446 · Fire DetectionSDR KCSA2025101956Lock · warning messageDOOR UPPER DECK FLIGHT LOCK MESSAGE. BOTH DOORS FLIGHT LOCK ACTUATORS OPERATIONAL CHECKS NORMAL IAW B747-400 AMM 52-23-00.Oct 19, 2025 · N745CK · Boeing 747446 · Door Warning SystemSDR KCSA2025101855Lock · faultedDOOR UPPER DECK FLIGHT LOCK. PERFORMED BOTH SIDE FLIGHT LOCK ACTUATOR OPERATIONS CHECK. ALL WORKING GOOD AND BOTH SIDE SWITCH ARE WORKING GOOD. NO FAULT FOUND IAW B747-400 AMM 52-23-00Oct 18, 2025 · N745CK · Boeing 747446 · Fixed Inner DoorsSDR KCSA2025101252Lock · inoperativeDOOR UPPER DECK FLIGHT LOCK. TROUBLESHOT PER FIM 52-71 TASK 823. PERFORMED OPERATIONS TEST IAW AMM 52-23-00. ALL CHECKS GOOD AT THIS TIME.Oct 12, 2025 · N745CK · Boeing 747446 · Fixed Inner DoorsSDR U2RA2025110300024Skin · damagedAIRCRAFT SUSTAINED GROUND DAMAGE TO THE LOWER FUSELAGE SKIN, FORWARD OF THE FORWARD LOWER CARGO DOOR, STA 539.125, BETWEEN STRINGERS S-33R AND S-34R, MEASURING 3.875" LONG AND STA 574.750 BETWEEN STRINGERS S-33R AND S-34R MEASURING 4.875" LONG - ACCOMPLISHED COct 9, 2025 · N729CA · Boeing 747446 · Fuselage Main, Plate/SkinSDR KCSA20251003950Actuator · failed100272867: RIGHT WING GEAR FAILED TO EXTEND WITH ALTERNATE GEAR EXTENSION, DECLARED EMERGENCY. REMOVED AND REPLACED WING GEAR ALTERNATE ELECTRIC ACTUATOR. OPERATIONAL CHECK GOOD. NO DEFECTS NOTED. NO FURTHER ACTION REQUIRED AT THIS TIME (JACKED AIRCRAFT PERFSep 29, 2025 · N745CK · Boeing 747446 · Landing Gear ActuatorSDR KCSA2025100192950Landing Gear · no deployRIGHT WING GEAR FAILED TO EXTEND WITH ALTERNATE GEAR EXTENSION, DECLARED EMERGENCY.Sep 29, 2025 · N745CK · Boeing 747446 · Landing Gear Retraction/Extension SystemSDR KCSA2025092549Actuator · unserviceableDOOR UPPER DECK FLIGHT LOCK CAUTION MESSAGE. TRANSFERRED TO DMI LIST NUMBER 100272910 IAW KA B747-400 MEL 52-23-3-2. CAT C. DUE 10-5-25. PLACARDS INSTALLED. : REFERENCE DMI 100272910. REMOVED AND REPLACED RIGHT HAND UPPER DECK DOOR LOCK ACTUATOR IAW KA B7Sep 25, 2025 · N742CK · Boeing 747446 · Door Warning SystemSDR KCSA2025092548Warning Light · false activationDOOR UPPER DECK FLIGHT LOCK CAUTION MESSAGE. PERFORMED FLIGHT LOCK ACTUATOR OPS TEST IAW AMM 52-23-00. OPS TESTED GOOD. NO DEFECTS NOTED.Sep 25, 2025 · N742CK · Boeing 747446 · Door Warning SystemSDR KCSA2025092547Warning Message · false activationDOOR UPPER DECK FLIGHT LOCK CAUTION MESSAGE. PERFORMED FLIGHT LOCK ACTUATOR OPERATIONAL TEST IAW AMM 52-23-00. OPERATIONAL TEST GOOD. NO DEFECTS NOTED.Sep 25, 2025 · N742CK · Boeing 747446 · Door Warning SystemSDR KCSA202509171161Stiffener · crackedAILERON CAVITY I/B STRUCTURE 20 IN. FWD OF HINGE POINT VERTICAL STIFFENER CRACKED AT LOWER EDGESep 17, 2025 · N742CK · Boeing 747446 · Wing Main, Frame StructureSDR KCSA202509161160Bulkhead · cracked1 FASTENER HOLE NOTED ON LOWER R/H STA 2598 BULKHEAD AFT INNER CHORD HAS CRACK INDICATIONSep 16, 2025 · N745CK · Boeing 747446 · Fuselage Main, BulkheadSDR KCSA202509161159Beam · corrodedLH WING TE FIXED TRAILING EDGE BEAM UPPER CHORD @ APPROX WBL 340 CORRODEDSep 16, 2025 · N745CK · Boeing 747446 · Wing Main, Frame StructureSDR KCSA202509161158Tension Tie · crackedFOUND CRACK INDICATION IN FRAME AT TENSION TIE STA 1140 L/HSep 16, 2025 · N745CK · Boeing 747446 · Fuselage Main, StructureSDR KCSA202509131157Reveal · crackedFOUND DOOR REVEAL TO BE CRACKED AS MARKED AT R2 DOOR BETWEEN STR 25 AND 24Sep 13, 2025 · N745CK · Boeing 747446 · Fuselage Miscellaneous StructureSDR KCSA202509121156Reveal · crackedCRACK FOUND IN L-5 DOOR REVEAL AT PRESS TO RELEASE LEVER NEAR STA 2231Sep 12, 2025 · N745CK · Boeing 747446 · Fuselage Miscellaneous Structure
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