# Service difficulty reports: Boeing 737-7H4 A list on [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4.md). Newest first. General aviation reporting is voluntary. Page 1 of 1,919 · 95,948 reports - [SDR SWAA2026102651353](https://openairdocs.org/sdr/SWAA2026102651353.md): Sign · detached · Oct 25, 2026 · N917WN · Boeing 7377H4 · Emergency Lighting > AFT GALLEY OVERHEAD EXIT SIGN DETACHED. ATTACHED THE EMERGENCY EXIT SIGN IAW AMM 33-51-01 OPS CHKD GOOD. - [SDR SWAA2026102684480](https://openairdocs.org/sdr/SWAA2026102684480.md): Engine · malfunctioned · Oct 25, 2026 · N282WN · Boeing 7377H4 · Engine (Turbine/Turboprop) > PASSENGERS SAW AND HEARD FLAMES AND BANGS COMING OUT OF THE NR 1 ENGINE. RETUNED TO THE GATE. DURING FLAMES AND BANGS, NO INDICATION IN THE FLIGHT DECK AND DID NOT HEAR BANGS. TAXIED ACFT & PERFORMED HIGH POWER RUN WITH OBSERVER, NO FAULTS, FLAMES OR BANGS I - [SDR SWAA2026102629143](https://openairdocs.org/sdr/SWAA2026102629143.md): Battery Pack · faulted · Oct 24, 2026 · N476WN · Boeing 7377H4 · Emergency Lighting > CIRCUIT BREAKER FOR LIGHTING EMER CHRG L AFT, FOUND TRIPPED. T/S PER WDM 33-51-11, FOUND EMERGENCY EXIT POWER SUPPLY M1673 AFT CABIN TRIPPING BREAKER. R & R THE M1673 EMERGENCY EXIT LIGHT CHARGER ASSY & BATTERY PACK, OPS TESTED GOOD IAW AMM 33-51-06. - [SDR SWAA2026102678022](https://openairdocs.org/sdr/SWAA2026102678022.md): Charger · faulted · Oct 24, 2026 · N476WN · Boeing 7377H4 · Emergency Lighting > CIRCUIT BREAKER FOR LIGHTING EMER CHRG L AFT FOUND TRIPPED. T/S IAW WDM 33-51-11, FOUND EMERGENCY EXIT POWER SUPPLY M1673 IN AFT CABIN TRIPPING THE BREAKER. R & R THE M1673 EMERGENCY EXIT LIGHT CHARGER ASSY & BATTERY PACK. OPS TESTED GOOD IAW AMM 33-51-06. - [SDR SWAA2026102682501](https://openairdocs.org/sdr/SWAA2026102682501.md): Start Valve · faulted · Oct 22, 2026 · N455WN · Boeing 7377H4 · Engine Start Valves/Controls > ON NR 2 ENGINE START, ONLY REACHED 17% N2 BEFORE ROLLING BACK. SECOND ATTEMPT WAS 0% N2. R & R THE NR 2 ENG START VALVE IAW AMM 80-11-01. - [SDR SWAA2026102618567](https://openairdocs.org/sdr/SWAA2026102618567.md): Light · inoperative · Oct 22, 2026 · N479WN · Boeing 7377H4 · Emergency Lighting > AREA LIGHT AT ROW 3DEF INOP AREA LIGHT AT ROW 3DEF INOPERATIVE. R & R THE LIGHT ASSY IAW AMM 33-51-03-201. - [SDR SWAA2026102692517](https://openairdocs.org/sdr/SWAA2026102692517.md): Lamp · inoperative · Oct 22, 2026 · N217JC · Boeing 7377H4 · Emergency Lighting > EMERGENCY AREA LIGHT AT SEAT 19DEF INOPERATIVE. R & R THE LAMPS IAW AMM 33-51-03-960-801. TEST PASSED. - [SDR SWAA2026102647435](https://openairdocs.org/sdr/SWAA2026102647435.md): Seal · cracked · Oct 22, 2026 · N241WN · Boeing 7377H4 · Horizontal Stabilizer Miscellaneous Structure > STABILIZER, LEFT HAND UPPER SLIDING SEAL CRACKED LEFT ELEVATOR. R & R LT HORIZONTAL STAB UPPER SLIDING SEAL IAW AMM 53-31-31. - [SDR SWAA2026102647202](https://openairdocs.org/sdr/SWAA2026102647202.md): Seal · cracked · Oct 22, 2026 · N241WN · Boeing 7377H4 · Horizontal Stabilizer Miscellaneous Structure > STABILIZER RT UPPER SLIDING SEAL CRACKED. R & R THE HORIZONTAL STAB RT UPPER SLIDING SEAL IAW AMM 53-31-31. - [SDR SWAA2026102620626](https://openairdocs.org/sdr/SWAA2026102620626.md): Start Valve · faulted · Oct 22, 2026 · N455WN · Boeing 7377H4 · Engine Start Valves/Controls > NR 2 ENGINE START, ONLY REACHED 17% N2 BEFORE ROLLING BACK. SECOND ATTEMPT WAS 0% N2. R & R NR 2 ENG START VALVE IAW AMM 80-11-03. - [SDR SWAA2026102602310](https://openairdocs.org/sdr/SWAA2026102602310.md): Warning Light · inoperative · Oct 21, 2026 · N474WN · Boeing 7377H4 · Central Warning > MASTER FIRE WARNING LIGHT WILL NOT ILLUMINATE. R & R THE FIRE WARNING LIGHT ASSY IAW AMM 33-11-00 - [SDR SWAA2026102660392](https://openairdocs.org/sdr/SWAA2026102660392.md): Battery Pack · no test · Oct 21, 2026 · N447WN · Boeing 7377H4 · Emergency Lighting > AFT RT EMERGENCY BATTERY PACK M1672 FAILED A CAPACITY CHECK. R & R CABIN EMERGENCY BATTERY PACK AMM 33-51-06. - [SDR SWAA2026102613542](https://openairdocs.org/sdr/SWAA2026102613542.md): Battery Pack · no test · Oct 21, 2026 · N447WN · Boeing 7377H4 · Emergency Lighting > AFT LEFT EMERGENCY BATTERY PACK M1673 FAILED A CAPACITY CHECK. R & R THE BATTERY PACK IAW AMM 33-51-06. - [SDR SWAA2026102622680](https://openairdocs.org/sdr/SWAA2026102622680.md): Battery Pack · no test · Oct 21, 2026 · N298WN · Boeing 7377H4 · Emergency Lighting > M1674 AND M1675 FAILED A CAPACITY CHECK. R & R M1674 AND M1675 BATTERY PACKS IAW AMM 33-51-06 02. INSPECTED IAW AMM 33-51-06-960-805. - [SDR SWAA2026102609004](https://openairdocs.org/sdr/SWAA2026102609004.md): Battery Pack · no test · Oct 21, 2026 · N298WN · Boeing 7377H4 · Emergency Lighting > M1668 AND M1669 FAILED A CAPACITY CHECK. R & R M1668 AND M1669 BATTERY PACKS IAW AMM 33-51-06 02. INSPECTED IAW AMM 33-51-06-960-805. - [SDR SWAA2026102648731](https://openairdocs.org/sdr/SWAA2026102648731.md): Battery Pack · no test · Oct 21, 2026 · N447WN · Boeing 7377H4 · Emergency Lighting > FWD LT EMERGENCY BATTERY PACK M1675 FAILED A CAPACITY CHECK. R & R CABIN EMERGENCY BATTERY PACK AMM 33-51-06 - [SDR SWAA2026102245732](https://openairdocs.org/sdr/SWAA2026102245732.md): Fuse · faulted · Oct 21, 2026 · N477WN · Boeing 7377H4 · Leading Edge Slat Control System > LEADING EDGE FLAPS AND SLATS, ONE OR MORE LEADING EDGE DEVICES 123 AND 4 SLATS 5678 SHOWED IN TRANSIT DURING FLIGHT. TROUBLESHOT PER FIM 27-81 TASK 812. CHECKED FOR BYPASSING LE ACTUATORS AND LE UCM VALVE NO BYPASSING NOTED. RANG OUT WIRES A11 AND D12 IN CON - [SDR SWAA2026102680991](https://openairdocs.org/sdr/SWAA2026102680991.md): Lanyard · misinstalled · Oct 20, 2026 · N472WN · Boeing 7377H4 · Emergency Equipment > PASSENGER CABIN RT OVERWING EXIT ESCAPE LANYARD IMPROPERLY STOWED. RESTOWED ESCAPE LANYARD IAW AMM 25-61-10-400-802. - [SDR SWAA2026102664408](https://openairdocs.org/sdr/SWAA2026102664408.md): Support · cracked · Oct 20, 2026 · N472WN · Boeing 7377H4 · Passenger/Crew Doors > PASSENGER CABIN AFT ENTRY L2 DOOR LOWER LINER SUPPORT ASSY WAS CRACKED AT THE FORWARD AND AFT BRACKETS. REMOVED AND REPLACED PASSENGER CABIN AFT ENTRY L2 DOOR LOWER LINER SUPPORT ASSEMBLY IAW AMM 52-13-31. - [SDR SWAA2026102671199](https://openairdocs.org/sdr/SWAA2026102671199.md): Support Bracket · loose · Oct 20, 2026 · N472WN · Boeing 7377H4 · Wing Miscellaneous Structure > RIGHT WING LWR INBD TRAILING EDGE PANEL 651GB, FWD SUPPORT BRACKET NOT SECURE AT SPAR CAP. REMOVED AND REPLACED THE FWD SUPPORT BRACKET IAW SRM 51-40-02. - [SDR SWAA2026102683655](https://openairdocs.org/sdr/SWAA2026102683655.md): Seat Track · worn · Oct 20, 2026 · N472WN · Boeing 7377H4 · Fuselage, Seat/Cargo Attach Fittings > FLIGHT DECK, CAPT. AFT IB SEAT TRACK WORN TO BEYOND LIMITS. THE SEAT TRACK WAS R & R IAW AMM 25-11-11. - [SDR SWAA2026102619298](https://openairdocs.org/sdr/SWAA2026102619298.md): Battery Pack · inoperative · Oct 19, 2026 · N469WN · Boeing 7377H4 · Emergency Lighting > EMERGENCY LIGHTS ASSOCIATED WITH M1674 BATTERY PACK WAS INOPERATIVE. CHARGED THE BATTERY PACK M1674 IAW AMM 33-51-06-610-802. PERFORMED AN OPS TEST IAW AMM 33-51-00-710-801, ALL LIGHTS CHKD GOOD. - [SDR SWAA2026102618666](https://openairdocs.org/sdr/SWAA2026102618666.md): Lamp · inoperative · Oct 19, 2026 · N234WN · Boeing 7377H4 · Emergency Lighting > LEFT AFT LOWER FUSELAGE EXTERIOR EMERGENCY LIGHT WAS INOP. REPLACED THE LAMPS IAW AMM 33-51-04-960-801. OPS TESTED GOOD. - [SDR SWAA2026102625763](https://openairdocs.org/sdr/SWAA2026102625763.md): Battery Pack · inoperative · Oct 19, 2026 · N469WN · Boeing 7377H4 · Emergency Lighting > INOPERATIVE EMERGENCY EXIT LOCATOR LIGHT POWERED BY BATTERY PACK M1674. CHARGED THE BATTERY PACK M1674 IAW AMM 33-51-06-610-802. OPS TESTED IAW AMM 33-51-00-710-801, ALL LIGHTS ASSOCIATED WITH M1674 CHKD GOOD. - [SDR SWAA2026102603886](https://openairdocs.org/sdr/SWAA2026102603886.md): Bulb · inoperative · Oct 19, 2026 · N469WN · Boeing 7377H4 · Emergency Lighting > RIGHT OVERWING EMERGENCY EXIT AFT LOCATOR HAD INOPERATIVE BULBS. REPLACED THE BULBS AND PERFORMED A GOOD INSTALLATION TEST IAW AMM 33-51-01-960-801. VERIFIED ITEM 1. - [SDR SWAA2026102374177](https://openairdocs.org/sdr/SWAA2026102374177.md): Megaphone · inoperative · Oct 19, 2026 · N474WN · Boeing 7377H4 · Emergency Equipment > DUE TO IN SERVICE REPORT OF FWD MEGAPHONE INOPERATIVE, REMOVED AND REPLACED THE FWD MEGAPHONE IAW MM 25-64-00. - [SDR SWAA2026102227749](https://openairdocs.org/sdr/SWAA2026102227749.md): Hook · loose · Oct 18, 2026 · N962WN · Boeing 7377H4 · Emergency Equipment > R1 ESCAPE SLIDE PACK GIRT BAR HOOKS LOOSE. REMARKS: R1 GIRT BAR RETAINING PIN/BOLT IS LOOSE. RE SECURED R1 BIRT BAR RETAINING CLIP PER SRM 51-40-02. - [SDR SWAA2026102200930](https://openairdocs.org/sdr/SWAA2026102200930.md): Flashlight · inoperative · Oct 18, 2026 · N292WN · Boeing 7377H4 · Emergency Equipment > CABIN EMERGENCY FLASHLIGHT WILL NOT TEST/INOP. R&R AFTER F/A FLASHLIGHT INBOARD SIDE PER AMM 25-64-00. TYPO CORRECTION R&R AFT F/A FLASHLIGHT INBOARD SIDE PER AMM 25-64-00. - [SDR SWAA2026102122860](https://openairdocs.org/sdr/SWAA2026102122860.md): Panel · cracked · Oct 17, 2026 · N297WN · Boeing 7377H4 · Wing Miscellaneous Structure > RIGHT MLG AFT SHELF PANEL WAS CRACKED. REPLACED FAIRING CAP IAW AMM 57-50-02 & 20-50-11. - [SDR SWAA2026102116002](https://openairdocs.org/sdr/SWAA2026102116002.md): Lamp · inoperative · Oct 17, 2026 · N218WN · Boeing 7377H4 · Emergency Lighting > RIGHT FWD EXTERIOR EMERGENCY LIGHT WAS INOPERATIVE. R & R THE LAMP IAW AMM 33-51-04. OPS CHKD SATISFACTORY. - [SDR SWAA2026102007959](https://openairdocs.org/sdr/SWAA2026102007959.md): Fire Warning · intermittent · Oct 16, 2026 · N473WN · Boeing 7377H4 · Fire Detection > AFT CARGO FIRE DETECTION, FIRE LIGHT ON. INTERMITTENTLY HAPPENED TWICE. OK TO CONTINUE ON MEL 26-19-01, SP1. PERFORMED FIM 26-23 TASK 812. R & R CARGO PANEL IAW AMM 26-00-02. OPS CHKD GOOD. NO DEFECT NOTED. - [SDR SWAA2026102071827](https://openairdocs.org/sdr/SWAA2026102071827.md): Seat Track · worn · Oct 16, 2026 · N247WN · Boeing 7377H4 · Fuselage, Seat/Cargo Attach Fittings > FLIGHT DECK, FO AFT INBD SEAT TRACK WORN BEYOND LIMITS. THE SEAT TRACK WAS R & R IAW AMM 25-11-11. - [SDR SWAA2026102087026](https://openairdocs.org/sdr/SWAA2026102087026.md): Bracket · loose · Oct 16, 2026 · N247WN · Boeing 7377H4 · Emergency Equipment > R1 DOOR ESCAPE SLIDE CASE FWD GIRT BAR HANGER BRACKET LOOSE. TIGHTENED R1 DOOR ESCAPE SLIDE CASE FWD GIRT BAR HANGER BRACKET IAW SRM 51-40-02. - [SDR SWAA2026101995103](https://openairdocs.org/sdr/SWAA2026101995103.md): Lens · detached · Oct 15, 2026 · N292WN · Boeing 7377H4 · Emergency Lighting > EMERGENCY LIGHT LENS ON FO SIDE FELL OFF. REMOVED AND REPLACED THE EMERGENCY EXIT LENS IAW AMM 33-51-01. OPS CHKD GOOD. - [SDR SWAA2026101975253](https://openairdocs.org/sdr/SWAA2026101975253.md): Battery Pack · no test · Oct 15, 2026 · N209WN · Boeing 7377H4 · Emergency Lighting > AFT LEFT EMERGENCY BATTERY PACK M1673 FAILED CAPACITY CHECK. R & R THE BATTERY PACK IAW AMM 33-51-06. - [SDR SWAA2026101936295](https://openairdocs.org/sdr/SWAA2026101936295.md): Light · inoperative · Oct 15, 2026 · N250WN · Boeing 7377H4 · Emergency Lighting > SIDE WALL EMERGENCY LIGHT WILL NOT LLUMINATE. OK TO CONTINUE PER MEL 33-2-03 AN 345357. R & R LT EMERGENCY EXIT ROW FLOOR PROXIMITY LIGHT ASSY. OPS NORMAL. REF LP 2816135. THIS CLEARS MEL 33-2-03. - [SDR SWAA2026101954853](https://openairdocs.org/sdr/SWAA2026101954853.md): Battery Pack · no test · Oct 15, 2026 · N291WN · Boeing 7377H4 · Emergency Lighting > AFT RT EMERGENCY LIGHTING BATTERY PACK FAILED THE CAPACITY CHECK. REMOVED AND REPLACED BATTERY PACK PER MM 33-51-06. - [SDR SWAA2026101994927](https://openairdocs.org/sdr/SWAA2026101994927.md): Battery Pack · no test · Oct 15, 2026 · N291WN · Boeing 7377H4 · Emergency Lighting > AFT LT EMERGENCY LIGHTING BATTERY PACK FAILED THE CAPACITY CHECK. REMOVED AND REPLACED BATTERY PACK PER M/M 33-51-06. - [SDR SWAA2026101999157](https://openairdocs.org/sdr/SWAA2026101999157.md): Battery Pack · no test · Oct 15, 2026 · N209WN · Boeing 7377H4 · Emergency Lighting > AFT RT EMERGENCY BATTERY PACK M1672 FAILED A CAPACITY CHECK. R & R THE BATTERY PACK IAW AMM 33-51-06. - [SDR SWAA2026101923787](https://openairdocs.org/sdr/SWAA2026101923787.md): Battery Pack · no test · Oct 15, 2026 · N209WN · Boeing 7377H4 · Emergency Lighting > RT EMERGENCY EXIT BATTERY PACK M1669 FAILED A CAPACITY CHECK. R & R THE BATTERY PACK PER AMM 33-51-06 INSPECTION VERIFIED CORRECTIVE ACTION TAKEN IN STEP 1. - [SDR SWAA2026101914969](https://openairdocs.org/sdr/SWAA2026101914969.md): Battery Pack · no test · Oct 15, 2026 · N209WN · Boeing 7377H4 · Emergency Lighting > LEFT EMERGENCY EXIT BATTERY PACK M1668 FAILED CAPACITY CHECK. R & R CABIN EMERGENCY BATTERY PACK IAW AMM 33-51-06. - [SDR SWAA2026102398231](https://openairdocs.org/sdr/SWAA2026102398231.md): Bulb · inoperative · Oct 14, 2026 · N915WN · Boeing 7377H4 · Emergency Lighting > RIGHT LOWER AFT EXTERNAL EMERGENCY LIGHT IS INOPERATIVE. REMOVED AND REPLACED RT LOWER AFT EXTERNAL EMERGENCY LIGHT BULB IAW AMM 33-51-04-960-801. OPS CHKD GOOD. - [SDR SWAA2026101935213](https://openairdocs.org/sdr/SWAA2026101935213.md): Hook · loose · Oct 14, 2026 · N470WN · Boeing 7377H4 · Emergency Equipment > ESCAPE SLIDE GIRT BAR HOOKS WERE LOOSE AT THE FWD BOARDING DOOR. ADJUSTED THE SLIDE COVER HOOKS IAW SIP. OPS CHKD NORMAL. - [SDR SWAA2026101935111](https://openairdocs.org/sdr/SWAA2026101935111.md): Lamp · inoperative · Oct 13, 2026 · N443WN · Boeing 7377H4 · Emergency Lighting > EMERGENCY LIGHT AT ROW 21DEF INOPERATIVE. REPLACED THE LAMPS IAW AMM 33-51-03. OPS CHKD OKAY. - [SDR SWAA2026101957023](https://openairdocs.org/sdr/SWAA2026101957023.md): Slide · unsecure · Oct 13, 2026 · N213WN · Boeing 7377H4 · Escape Slide > L2 DOOR SLIDE FELL OUT OF BUSTLE. REINSTALLED AFTER ENTRY DOOR SLIDE IAW MT 725-61-06. - [SDR SWAA2026102627991](https://openairdocs.org/sdr/SWAA2026102627991.md): Light · inoperative · Oct 12, 2026 · N926WN · Boeing 7377H4 · Emergency Lighting > MULTIPLE MAIN CABIN EMERGENCY LIGHTS INOPERATIVE. R & R THE EMERGENCY LIGHT ASSY AT SEAT ROW 9 ABC IAW AMM 33-51-06. - [SDR SWAA2026102692410](https://openairdocs.org/sdr/SWAA2026102692410.md): Strap · cracked · Oct 12, 2026 · N926WN · Boeing 7377H4 · Fuselage Miscellaneous Structure > AFT FASTENER HOLE AT STA 639 STUB BEAM HAS A CRACK. REMOVED 2EA BS 639 STRAPS IAW SRM 51-40-02. LOCATE AND DRILL 2EA NEW STRAP IAW SRM 51-40-05. INSTALLED NEW STRAPS IAW SRM 51-40-02 C/W. - [SDR SWAA2026101946866](https://openairdocs.org/sdr/SWAA2026101946866.md): Slide · out of position · Oct 12, 2026 · N488WN · Boeing 7377H4 · Escape Slide > AE ESCAPE SLIDE FLAP NEEDS READJUSTED_ REPOSITIONED AFT ENTRY SLIDE REF MT #725-61-06. - [SDR SWAA2026101618896](https://openairdocs.org/sdr/SWAA2026101618896.md): Lens · missing · Oct 12, 2026 · N476WN · Boeing 7377H4 · Emergency Lighting > FO SIDE EMERGENCY EXIT LIGHT LENS MISSING. REPLACED THE EMERGENCY LIGHT LENS IAW AMM 33-51-01. - [SDR SWAA2026101639244](https://openairdocs.org/sdr/SWAA2026101639244.md): Radome · cracked · Oct 12, 2026 · N486WN · Boeing 7377H4 · Aerodynamic Fairings > RADOME CRACKED AT 6 OCLOCK POSITION, R & R THE NOSE RADOME IAW AMM 53-52-00. Next page: https://openairdocs.org/model/boeing-737-7h4/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 = '7377H4' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/model/boeing-737-7h4/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.