# Service difficulty reports: N742CK A list on [N742CK](https://openairdocs.org/aircraft/N742CK.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. Page 1 of 3 · 118 reports - [SDR KCSA202610071224](https://openairdocs.org/sdr/KCSA202610071224.md): Power Supply · inoperative · Oct 7, 2026 · N742CK · Boeing 747446 · Emergency Lighting > L/H UPPER DECK SLIDE DOOR EMERGENCY LIGHT INOP - [SDR KCSA202610071223](https://openairdocs.org/sdr/KCSA202610071223.md): Light · inoperative · Oct 7, 2026 · N742CK · Boeing 747446 · Emergency Lighting > CENTER AFT EMERGENCY LIGHT BY GALLEY IS INOP. - [SDR KCSA2026082348](https://openairdocs.org/sdr/KCSA2026082348.md): Pcb · unserviceable · Aug 23, 2026 · N742CK · Boeing 747446 · Detection System > FIRE 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. - [SDR KCSA202607021099](https://openairdocs.org/sdr/KCSA202607021099.md): Floor Support · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous Structure > MAIN DECK FLOOR SUPPORT LOWER CHORD AT STA 1220 RBL 98 IS CRACKED - [SDR KCSA202607021098](https://openairdocs.org/sdr/KCSA202607021098.md): Power Supply · no test · Jul 2, 2026 · N742CK · Boeing 747446 · Emergency Lighting > EMERGENCY LIGHT OVER L1 FAILED LIGHT TEST - [SDR KCSA202607021097](https://openairdocs.org/sdr/KCSA202607021097.md): Shear Web · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous Structure > MAIN DECK FLOOR STATION 140-160 LBL 40 SHEAR WEB CRACKED MULTIPLE LOCATIONS - [SDR KCSA202607021096](https://openairdocs.org/sdr/KCSA202607021096.md): Slide · unwanted deploy · Jul 2, 2026 · N742CK · Boeing 747446 · Escape Slide > DURING TROUBLESHOOTING OF ARM/ DISARM HANDLE OF L/H UPPER DECK DOOR, THE EMERGENCY ESCAPE SLIDE WAS UNINTENTIONALLY DEPLOYED AND REQUIRES REPLACEMENT - [SDR KCSA202607021095](https://openairdocs.org/sdr/KCSA202607021095.md): Skin · corroded · Jul 2, 2026 · N742CK · Boeing 747446 · Fuel Storage > MAIN DECK CENTER FUEL TANK UPPER SKIN CORROSION STA 1050 LBL 80-100 - [SDR KCSA202607021094](https://openairdocs.org/sdr/KCSA202607021094.md): Skin · corroded · Jul 2, 2026 · N742CK · Boeing 747446 · Fuel Storage > EVIDENCE OF CORROSION FOUND ON CENTER TANK UPPER SKIN AT STA 1150 RBL 110 - [SDR KCSA202607021093](https://openairdocs.org/sdr/KCSA202607021093.md): Skin · corroded · Jul 2, 2026 · N742CK · Boeing 747446 · Fuel Storage > EVIDENCE OF CORROSION FOUND ON CENTER TANK UPPER FWD SKIN SECTION AT BS 1139, RBL 100. - [SDR KCSA202607021092](https://openairdocs.org/sdr/KCSA202607021092.md): Skin · corroded · Jul 2, 2026 · N742CK · Boeing 747446 · Fuel Storage > EVIDENCE OF CORROSION FOUND ON CENTER TANK UPPER SKIN AT STA 1140 RBL 100 - [SDR KCSA202607021091](https://openairdocs.org/sdr/KCSA202607021091.md): Skin · corroded · Jul 2, 2026 · N742CK · Boeing 747446 · Fuel Storage > EVIDENCE OF CORROSION FOUND ON CENTER TANK UPPER SKIN FWD OF TENSION FITTING AT STA 1180 RBL 98 - [SDR KCSA202607021090](https://openairdocs.org/sdr/KCSA202607021090.md): Stiffener · damaged · Jul 2, 2026 · N742CK · Boeing 747446 · Wing Miscellaneous Structure > L/H WING T/E STIFFENER ON AFT SIDE OF AFT SPAR AT WBL 1150 DAMAGED. - [SDR KCSA202607021089](https://openairdocs.org/sdr/KCSA202607021089.md): Frame · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Main, Frame > NOSE RADOME O/B RING ANGLE CRACKED AT APPROX 11 O'CLOCK POSITION - [SDR KCSA202607021088](https://openairdocs.org/sdr/KCSA202607021088.md): Floor Support · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous Structure > FLIGHT DECK R/H UPPER SILL OUTER CHORD CRACKED AT STA 315 JUST ABOVE R2 WINDOW - [SDR KCSA202607021087](https://openairdocs.org/sdr/KCSA202607021087.md): Shear Web · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous Structure > MAIN DECK FLOOR BS 160-180 LBL 48, SHEAR WEB CRACKED. - [SDR KCSA202607021086](https://openairdocs.org/sdr/KCSA202607021086.md): Shear Web · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous Structure > MAIN DECK FLOOR STA 140-160 RBL 40, SHEAR WEB CRACKED MULTIPLE LOCATIONS - [SDR KCSA202607021085](https://openairdocs.org/sdr/KCSA202607021085.md): Angle · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous Structure > MAIN DECK AT STA 2360 LBL 33 JUST BELOW FLOOR LEVEL ANGLE SUPPORT CRACKED. - [SDR KCSA202607021084](https://openairdocs.org/sdr/KCSA202607021084.md): Angle · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Miscellaneous Structure > MAIN DECK AT BS 2360, RBL 33 JUST BELOW FLOOR LEVEL ANGLE SUPPORT CRACKED. - [SDR KCSA202607021083](https://openairdocs.org/sdr/KCSA202607021083.md): Depressor · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Main, Structure > RT UPPER DECK DOOR FWD UPPER CORNER SEAL DEPOESSOR CRACKED - [SDR KCSA202607021082](https://openairdocs.org/sdr/KCSA202607021082.md): Floorbeam · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Main, Floor Beam > CRACK FOUND ON MAIN DECK FLOORBEAM CLIP AT STA 280 LBL 6. - [SDR KCSA202607021081](https://openairdocs.org/sdr/KCSA202607021081.md): Depressor · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fixed Inner Doors > LEFT UPPER DECK DOOR AFT UPPER CORNER SEAL DEPRESSOR CRACKED - [SDR KCSA202607021080](https://openairdocs.org/sdr/KCSA202607021080.md): Shear Tie · cracked · Jul 2, 2026 · N742CK · Boeing 747446 · Fuselage Internal Mounting Structure > CRACK FOUND IN BS 1000 FRONT SPAR SHEAR TIE AT RBL 33.99 - [SDR KCSA202512051228](https://openairdocs.org/sdr/KCSA202512051228.md): Battery Pack · weak · Dec 5, 2025 · N742CK · Boeing 747446 · Emergency Lighting > CENTER EMERGENCY LIGHTS ON UPPER DECK DO NOT STAY ILLUMINATED. - [SDR KCSA2025092549](https://openairdocs.org/sdr/KCSA2025092549.md): Actuator · unserviceable · Sep 25, 2025 · N742CK · Boeing 747446 · Door Warning System > DOOR 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 B7 - [SDR KCSA2025092548](https://openairdocs.org/sdr/KCSA2025092548.md): Warning Light · false activation · Sep 25, 2025 · N742CK · Boeing 747446 · Door Warning System > DOOR UPPER DECK FLIGHT LOCK CAUTION MESSAGE. PERFORMED FLIGHT LOCK ACTUATOR OPS TEST IAW AMM 52-23-00. OPS TESTED GOOD. NO DEFECTS NOTED. - [SDR KCSA2025092547](https://openairdocs.org/sdr/KCSA2025092547.md): Warning Message · false activation · Sep 25, 2025 · N742CK · Boeing 747446 · Door Warning System > DOOR UPPER DECK FLIGHT LOCK CAUTION MESSAGE. PERFORMED FLIGHT LOCK ACTUATOR OPERATIONAL TEST IAW AMM 52-23-00. OPERATIONAL TEST GOOD. NO DEFECTS NOTED. - [SDR KCSA202509171161](https://openairdocs.org/sdr/KCSA202509171161.md): Stiffener · cracked · Sep 17, 2025 · N742CK · Boeing 747446 · Wing Main, Frame Structure > AILERON CAVITY I/B STRUCTURE 20 IN. FWD OF HINGE POINT VERTICAL STIFFENER CRACKED AT LOWER EDGE - [SDR KCSA20250815144](https://openairdocs.org/sdr/KCSA20250815144.md): Warning Message · false activation · Aug 11, 2025 · N742CK · Boeing 747446 · Door Warning System > DOOR UPPER DECK FLIGHT LOCK MESSAGE. PERFORMED ADJUSTMENT TEST OF UPPER DECK DOOR LOCK IAW AMM 52-23-00. NO DEFECTS NOTED. MESSAGE CLEARED. - [SDR KCSA2025072640](https://openairdocs.org/sdr/KCSA2025072640.md): Fire Bottle · unserviceable · Jul 26, 2025 · N742CK · Boeing 747446 · Extinguishing System > FIRE CARGO FWD MSG. FAK & ALL SRCS MVD TO U/D XFER TO DMI 100259185 IAW MEL 26-23-1-2 CAT C DUE 08-06-2025 MX PROC C/W PLCDS INSTL. REF DMI 100259185 FOR DEACT FWD LWR LOBE SMOKE DET SYS. SYS DEACT, XFER TO DMI 100259186 IAW MEL 26-16-1-2-2B CAT C, MX PROC - [SDR KCSA2025071939](https://openairdocs.org/sdr/KCSA2025071939.md): Battery · inoperative · Jul 19, 2025 · N742CK · Boeing 747446 · Emergency Exits > RIGHT UPPER DECK DOOR BATTERY "OK LIGHT" INOPERATIONAL. COMPLIED WITH PLACARD INSTALLED. RIGHT UPPER DECK DOOR BATTERY LIGHT. OPERATIONS CHECK GOOD IAW B747-400 AMM 51-23-14. - [SDR KCSA2025071238](https://openairdocs.org/sdr/KCSA2025071238.md): Lock · faulted · Jul 12, 2025 · N742CK · Boeing 747446 · Emergency Exits > DOOR UPPER DECK FLIGHT LOCK. TRANSFERRED TO DMI 100259089 IAW MEL 52-23-6-2 CATEGORY C DUE. PLACARDS INSTALLED MAINTENANCE PROCEDURES COMPLIED WITH. 100259106 - PERFORMED ADJUSTMENT TEST OF UPPER DECK FLIGHT LOCK IAW B747-400 AMM 52-23-00. NO DEFECTS NOTED. - [SDR KCSA2025071137](https://openairdocs.org/sdr/KCSA2025071137.md): Lock · faulted · Jul 11, 2025 · N742CK · Boeing 747446 · Door Warning System > UPPER DECK FLIGHT LOCK. PERFORMED ADJUSTMENT TEST IAW AMM 52-23-00. NO DEFECTS NOTED. - [SDR KCSA202507110535](https://openairdocs.org/sdr/KCSA202507110535.md): Light · inoperative · Jul 5, 2025 · N742CK · Boeing 747446 · Door Warning System > RIGHT UPPER DECK GROUND MODE LIGHT INOPERATIVE. COMPLIED WITH (M) PROCEDURES IAW MEL 52-23-4-2. CYCLED DOOR C/B ON P180 DOOR MODE LIGHT TEST OK IAW AMM 52-23-16. THIS CLEARS DMI 100259027. - [SDR KCSA20250708535](https://openairdocs.org/sdr/KCSA20250708535.md): Light · inoperative · Jul 5, 2025 · N742CK · Boeing 747446 · Emergency Exits > RIGHT HAND UPPER DECK GROUND MODE LIGHT INOPERATIVE. TRANSFERRED TO DMI 100259027 IAW MEL 52-23-4-2 CATEGORY C DUE DATE 07/15/25 PLACARDS INSTALLED (M) PROCEDURES COMPLIED WITH. - [SDR KCSA202506201095](https://openairdocs.org/sdr/KCSA202506201095.md): Light · inoperative · Jun 20, 2025 · N742CK · Boeing 747446 · Emergency Lighting > L1 DOOR SILL EMERGENCY LIGHTS INOP - [SDR KCSA202506201094](https://openairdocs.org/sdr/KCSA202506201094.md): Light · inoperative · Jun 20, 2025 · N742CK · Boeing 747446 · Emergency Lighting > AFT EMERGENCY LIGHT INOP - [SDR KCSA20250527029](https://openairdocs.org/sdr/KCSA20250527029.md): Aileron · stuck · May 20, 2025 · N742CK · Boeing 747446 · Aileron Control System > FAILS CONTROL CHECK RIGHT OUTBOARD AILERON REMAINS UP. REFERENCE LOGBOOK ENTRY 100231222/100231226 FOR AILERON CONTROL CABLE REPLACEMENT, AILERON ADJUSTMENT AND TEST. PERFORMED AILERON ADJUSTMENT TEST IAW B747-400 AMM 27-11-00 ALL CHECKS GOOD. 100231223- REFER - [SDR KCSA202503281045](https://openairdocs.org/sdr/KCSA202503281045.md): Battery Pack · inoperative · Mar 28, 2025 · N742CK · Boeing 747446 · Escape Slide > LH EMERGENCY SLIDE BOTTLE BATTERY INOP - [SDR KCSA202410261114](https://openairdocs.org/sdr/KCSA202410261114.md): Slide · binding · Oct 26, 2024 · N742CK · Boeing 747446 · Escape Slide > L EMERGENCY DOOR SLIDE HARD TO ARM. - [SDR KCSA2024081922](https://openairdocs.org/sdr/KCSA2024081922.md): Structure · ground damage · Aug 19, 2024 · N742CK · Boeing 747446 · Standard Practices/Structures > AIRCRAFT ROLLED FORWARD AFTER ENGINE START STRIKING VAN CAUSING DAMAGE AIRCRAFT RIGHT. AIRCRAFT DAMAGE INSPECTED, REPAIRED, AND LEAK CHECKED IAW E-52 #11533, DWG 52302402-1, 53302408-1 REV OR AND AMM 21-31-00 B747-400 REFERENCE M44 JOB CONTINUATION FORM FOR AD - [SDR KCSA2024072622](https://openairdocs.org/sdr/KCSA2024072622.md): Light · inoperative · Jul 26, 2024 · N742CK · Boeing 747446 · Emergency Lighting > UPPER DECK LEFT HAND EMERGENCY DOOR LIGHT INOP. - [SDR KCSA202404191053](https://openairdocs.org/sdr/KCSA202404191053.md): Skin · cracked · Apr 19, 2024 · N742CK · Boeing 747446 · Emergency Exits > FLIGHT COMPARTMENT CREW OVERHEAD HATCH INNER SKIN HAS 1/2 INCH CRACK AT INNER HANDLE OPENING NEAR NUTPLATE LOCATION - [SDR KCSA202404191052](https://openairdocs.org/sdr/KCSA202404191052.md): Pressure Deck · cracked · Apr 19, 2024 · N742CK · Boeing 747446 · Fuselage Main, Structure > CRACK ON CANTED PRESSURE WEB AT STA 1240 APPROXAMETLY RBL 80 - [SDR KCSA202404191051](https://openairdocs.org/sdr/KCSA202404191051.md): Pressure Deck · cracked · Apr 19, 2024 · N742CK · Boeing 747446 · Fuselage Main, Structure > CANTED PRESSURE DECK STA 1240 LBL 89 COMPOSITE CLOSE OUT PANEL CRACKED - [SDR KCSA202404191050](https://openairdocs.org/sdr/KCSA202404191050.md): Pressure Deck · cracked · Apr 19, 2024 · N742CK · Boeing 747446 · Fuselage Main, Structure > CANTED PRESSURE DECK STA 1240 RBL 89 COMPOSITE CLOSE OUT PANEL CRACKED - [SDR KCSA202404171049](https://openairdocs.org/sdr/KCSA202404171049.md): Frame · cracked · Apr 17, 2024 · N742CK · Boeing 747446 · Fuselage Main, Frame > L/H AFT CARGO COMPARTMENT SLOPE SIDEWALL FRAME WEB AT STA 1620 AND APROX LBL47 CRACKED APPROX 7 INCHES FROM TOP CHORD. - [SDR KCSA202404121048](https://openairdocs.org/sdr/KCSA202404121048.md): Bulkhead · cracked · Apr 12, 2024 · N742CK · Boeing 747446 · Fuselage Main, Bulkhead > FWD E/E COMPARTMENT STA 400 BULKHEAD APPROXIMATELY S-43L HAS MARKED CRACK. - [SDR KCSA202404121047](https://openairdocs.org/sdr/KCSA202404121047.md): Pressure Web · cracked · Apr 12, 2024 · N742CK · Boeing 747446 · Fuselage Main, Structure > CRACK ON CANTED PRESSURE WEB AT STA. 1240 APPROXAMETLY LBL 80 - [SDR KCSA202404121046](https://openairdocs.org/sdr/KCSA202404121046.md): Rib · cracked · Apr 12, 2024 · N742CK · Boeing 747446 · Wing, Rib/Bulkhead > OUTBOARD SEAL RIB ON L/H WING @ APPROXIMATELY WBL 470 FSSI 702 ABOVE #2 PYLON HAS CRACK @ ROD ATTACHMENT POINT. Next page: https://openairdocs.org/aircraft/N742CK/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 n_number = 'N742CK' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N742CK/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.