# Service difficulty reports: N634US, cancelled Sep 27, 2007 A list on [N634US, cancelled Sep 27, 2007](https://openairdocs.org/deregistered/N634US-2007-09-27.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR 0301856634](https://openairdocs.org/sdr/0301856634.md): Switch · burned · Sep 27, 2003 · N634US · Boeing 747227B · Buffet/Galleys > DURING FLIGHT, THE CIRCUIT BREAKER FOR THE NR 1 HOTPLATE IN THE AFT GALLEY POPPED AFTER SPARKS, ALONG WITH A STRONG ELECTRICAL SMOKE ODOR EMITTING FROM THE HOTPLATE. CREW PULLED ALL CIRCUIT BREAKERS FOR THE NR 1 COFFEEMAKER AND THE AIRCRAFT CONTINUED TO DESTIN - [SDR 0301846634](https://openairdocs.org/sdr/0301846634.md): Coffeemaker · burned · Sep 25, 2003 · N634US · Boeing 747227B · Buffet/Galleys > DURING FLIGHT, AN ELECTRICAL BURNING ODOR EMITTED FROM THE NBR 2 AFT COFFEEMAKER. PULLED CIRCUIT BREAKER AND AIRCRAFT CONTINUED TO DESTINATION AND LANDED WITHOUT INCIDENT. REPLACED COFFEEMAKER. OPERATIONAL CHECK GOOD. - [SDR 0103046634](https://openairdocs.org/sdr/0103046634.md): Power Supply · discharged · Aug 20, 2001 · N634US · Boeing 747251B · Emergency Lighting > DURING LINE CHECK, FOUND EMERGENCY ESCAPE PATH LIGHTING INOPERATIVE IN 'E' ZONE AND OUTSIDE FUSELAGE MOUNTED EMERGENCY LIGHT INOPERATIVE. REPLACED EMERGENCY ESCAPE PATH LIGHT POWER SUPPLY, BATTERY PACK, AND OUTSIDE LAMP. OPERATIONAL CHECK NORMAL. - [SDR 0102966634](https://openairdocs.org/sdr/0102966634.md): Duct · leaking · Aug 14, 2001 · N634US · Boeing 747227B · Air Distribution System > DURING CLIMB, (AMS) WATER LEAKING IN THE AREA OF SEAT 10J AND AN ELECTRICAL SMELL EMITTED AROUND DOOR 3L. TURNED OFF GALLEY POWER AND SMELL DISSIPATED. AIRCRAFT RETURNED TO AMS AND LANDED WITHOUT INCIDENT. REPLACED AIR CONDITIONING DUCT ABOVE SEAT 10J AND O - [SDR 0101026634](https://openairdocs.org/sdr/0101026634.md): Fuel Control · failed · Mar 18, 2001 · N634US · Boeing 747227B · Fuel Control/Turbine Engines > WHILE IN CRUISE, THE NR 4 ENGINE FLAMED OUT. ALL ENGINE PARAMETERS ROLLED BACK WITH FUEL FLOW INDICATING ZERO. AFTER DESCENDING TO FL280, TWO RESTART ATTEMPTS WERE MADE, BOTH UNSUCCESSFUL. THE FLIGHT DIVERTED TO ANC AND LANDED WITHOUT INCIDENT. MAINTENANCE - [SDR 0100676634](https://openairdocs.org/sdr/0100676634.md): Battery Pack · discharged · Feb 27, 2001 · N634US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, MAINTENANCE FOUND C-ZONE EMERGENCY ESCAPE PATH LIGHTS INOPERATIVE. REPLACED BATTERY PACK. OPERATIONAL CHECK NORMAL. - [SDR 0002396634](https://openairdocs.org/sdr/0002396634.md): Duct · ruptured · Jul 5, 2000 · N634US · Boeing 747227B · Air Distribution System > DURING CLIMB, THE FLIGHT CREW HAD DIFFICULTY PRESSURIZING THE AIRCRAFT IN AUTO AND A BURNING SMELL EMITTED FROM ROW 24. CABIN PRESSURIZATION WAS CONTROLLED MANUALLY AND AIRCRAFT RETURNED TO HNL AND LANDED WITHOUT FURTHER INCIDENT. REPLACED ZONE 3 TRIM AIR DU - [SDR 0001516634](https://openairdocs.org/sdr/0001516634.md): Web · cracked · Apr 12, 2000 · N634US · Boeing 747227B · Fuselage Main, Frame > DURING M-CHECK, FOUND CRACKED FRAME WEB AT STRINGER CUTOUTS FOR STRINGERS 10 AND 11 AT BS 380. REPAIRED PER EA 66-175724. - [SDR 0001526634](https://openairdocs.org/sdr/0001526634.md): Skin · cracked · Apr 6, 2000 · N634US · Boeing 747227B · Nacelle/Pylon, Plate/Skin > DURING M CHECK, FOUND CRACK IN 3 INCH LONG CRACK ON NR 4 PYLON SKIN INBOARD SIDE, FORWARD OF SLOT SEAL AT APPROX NAS STATION 173. REPAIRED PER EA66-175083. - [SDR 9902006634](https://openairdocs.org/sdr/9902006634.md): Power Supply · inoperative · Jun 7, 1999 · N634US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, FOUND C ZONE FLOOR PATH EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY, OPERATIONAL CHECK GOOD. - [SDR 9714856634](https://openairdocs.org/sdr/9714856634.md): Seal · leaking · Aug 1, 1997 · N634US · Boeing 747227B · Pneumatic Distribution System > DURING CLIMB, THE LEFT WING LEADING EDGE OVERHEAT LIGHT ILLUMINATED. AIRCRAFT DIVERTED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED 'Y' DUCT SEALS IN NR 2 PYLON. - [SDR 9715316634](https://openairdocs.org/sdr/9715316634.md): Frame · corroded · Jul 29, 1997 · N634US · Boeing 747227B · Fuselage Main, Frame > DURING PERIODIC CHECK, FOUND CORROSION AT THE UPPER 'T' CHORD (P/N 65B04333-39) OF FS 1920 FRAME. REPAIRED PER EA 66-151491. - [SDR 9711816634](https://openairdocs.org/sdr/9711816634.md): Brakes · dragging · Jun 17, 1997 · N634US · Boeing 747227B · Landing Gear Brake System > DURING TAKEOFF, THE BRAKES APPEARED TO BE DRAGGING. ABORTED TAKEOFF AND RETURNED TO THE GATE. INSPECTED BRAKES AND TIRES, ALL CHECKS NORMAL. - [SDR 9707706634](https://openairdocs.org/sdr/9707706634.md): Epr Indicator · malfunctioned · Apr 17, 1997 · N634US · Boeing 747227B · Engine Pressure Ratio (EPR) > DURING TAKEOFF, THE NR 2 ENGINE EPR INDICATION LOW. ABORTED TAKEOFF AT 80 KNOTS. MAINTENANCE REPLACED EPR INDICATOR. - [SDR 9702826634](https://openairdocs.org/sdr/9702826634.md): Tr Switch · lack of lube · Feb 10, 1997 · N634US · Boeing 747227B · Engine Thrust Reverser > DURING CRUISE, THE NR 2 REVERSER UNLOCK LIGHT ILLUMINATED. AIRCRAFT DIVERTED TO FAR AND LANDED WITHOUT INCIDENT. LUBED AND ADJUSTED THRUST REVERSER SWITCH, OPERATIONAL CHECK GOOD. - [SDR 9701556634](https://openairdocs.org/sdr/9701556634.md): Downlock Sensor · failed · Jan 24, 1997 · N634US · Boeing 747227B · Landing Gear Position and Warning > DURING CLIMB, THE RIGHT WING LANDING GEAR RED WARNING LIGHT REMAINED ILLUMINATED AFTER LANDING GEAR RETRACTION. RECYCLED LANDING GEAR AND LIGHT EXTINGUISHED. AIRCRAFT CONTINUED TO NRT AND LANDED WITHOUT INCIDENT. REPLACED THE RIGHT WING LANDING GEAR PRIMARY - [SDR 9701546634](https://openairdocs.org/sdr/9701546634.md): Downlock Sensor · failed · Jan 19, 1997 · N634US · Boeing 747227B · Landing Gear Position and Warning > DURING CLIMB, THE RIGHT WING LANDING GEAR RED WARNING LIGHT REMAINED ILLUMINATED AFTER LANDING GEAR RETRACTION. RECYCLED LANDING GEAR AND LIGHT EXTINGUISHED. AIRCRAFT CONTINUED TO NRT AND LANDED WITHOUT INCIDENT. REPLACED THE RIGHT WING LANDING GEAR PRIMARY - [SDR 9620796634](https://openairdocs.org/sdr/9620796634.md): Light · inop · Sep 28, 1996 · N634US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, FOUND 'E' ZONE FLOOR PATH EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERY PACK AND LIGHTS, OPERATIONAL CHECK GOOD. - [SDR 9612946634](https://openairdocs.org/sdr/9612946634.md): Fire Bottle · malfunctioned · Jun 8, 1996 · N634US · Boeing 747227B · Fire Bottle, Fixed > DURING CRUISE, THE APU FIRE WARNING SYSTEM ACTIVATED, SYSTEM-A FIRE LOOP DETECTOR FAULTED, FIRE BOTTLE WOULD NOT DISCHARGE AND PULLED CIRCUIT BREAKER. AIRCRAFT CONTINUED TO SFO AND LANDED WITHOUT INCIDENT. REPLACED FIRE BOTTLE, OPERATIONAL CHECK GOOD. - [SDR 9608896634](https://openairdocs.org/sdr/9608896634.md): Overheat Sensor · failed · Apr 21, 1996 · N634US · Boeing 747227B · Overheat Detection > DURING CRUISE, THE LEFT WING OVERHEAT LIGHT ILLUMINATED. AIRCRAFT DIVERTED TO SEA AND LANDED WITHOUT INCIDENT. REPLACED THE LEFT WING OVERHEAT SENSOR, OPERATIONAL CHECK GOOD. - [SDR 9607736634](https://openairdocs.org/sdr/9607736634.md): Skin · cracked · Mar 29, 1996 · N634US · Boeing 747227B · Nacelle/Pylon, Plate/Skin > DURING P-CHECK, FOUND A CRACK IN THE NR 1 PYLON INBOARD SKIN NACELLE STATION 175 WL 151. REPAIRED SKIN PER EA 66-99591. - [SDR 9607716634](https://openairdocs.org/sdr/9607716634.md): Skin · cracked · Mar 27, 1996 · N634US · Boeing 747227B · Nacelle/Pylon, Plate/Skin > DURING P-CHECK, FOUND A.8 INCH CRACK IN THE NR 3 PYLON INBOARD SKIN NACELLE, STATION 175 WL 151. REPAIRED SKIN PER EA 66-99590. - [SDR 9607706634](https://openairdocs.org/sdr/9607706634.md): Web · cracked · Mar 21, 1996 · N634US · Boeing 747227B · Nacelle/Pylon Structure > DURING P-CHECK, FOUND A CRACK IN THE NR 3 PYLON MID SPAR WEB. REPAIRED WEB (P/N 65B90421-41) PER EA 66-99587. - [SDR 9607696634](https://openairdocs.org/sdr/9607696634.md): Seat Track · corroded · Mar 20, 1996 · N634US · Boeing 747227B · Fuselage, Seat/Cargo Attach Fittings > DURING P-CHECK, FOUND CORROSION IN THE UPPER DECK SEAT TRACK AT FS 508 LBL 27. REPAIRED TRACK (P/N 65B14708-15) PER EA 66-99584. - [SDR 9607686634](https://openairdocs.org/sdr/9607686634.md): Support · corroded · Mar 20, 1996 · N634US · Boeing 747227B · Fuselage Miscellaneous Structure > DURING P-CHECK, FOUND CORROSION IN THE UPPER DECK FLOOR PANEL SUPPORT FS 510 LBL 23. REPAIRED SUPPORT (P/N 65B21284-3) PER EA 66-99585. - [SDR 9606626634](https://openairdocs.org/sdr/9606626634.md): Fitting · broken · Mar 11, 1996 · N634US · Boeing 747227B · Trailing Edge Flaps > DURING LINE CHECK, FOUND THE RIGHT INBOARD MIDFLAP DEFLECTION CONTROL FITTING BROKEN AND THE ROLLER BEARING MISSING. REPLACED THE FITTING (P/N 65B02048-2) AND BEARING (P/N 60B00178-616). ## 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 = 'N634US' AND deregistration_id = 'N634US-2007-09-27' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/deregistered/N634US-2007-09-27/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.