# Service difficulty reports: N635US, cancelled Sep 26, 2007 A list on [N635US, cancelled Sep 26, 2007](https://openairdocs.org/deregistered/N635US-2007-09-26.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR 0203786635](https://openairdocs.org/sdr/0203786635.md): Battery · defective · Nov 8, 2002 · N635US · Boeing 747227B · Detection System > During cruise an electrical odor emitted from in area of the P6 panel. After a short time the odor dissipated. Aircraft continued to destination and landed without incident. Visually inspected are with no defects found.Probable source of odor was the main batt - [SDR 0202106303](https://openairdocs.org/sdr/0202106303.md): Wire · disconnected · Jun 20, 2002 · N635US · Boeing 747451 · Light System Wiring > DURING LINE CHECK, FOUND FLOOR PATH EMERGENCY LIGHTS INOPERATIVE FROM DOOR 2R TO 3R. RECONNECTED WIRE. OPERATIONAL CHECK GOOD. - [SDR 0201995635](https://openairdocs.org/sdr/0201995635.md): Battery Pack · discharged · Jun 20, 2002 · N635US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, FOUND FIRST CLASS FLOOR PATH EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY AND BATTERY PACK. OPERATIONAL CHECK GOOD. - [SDR 0201986628](https://openairdocs.org/sdr/0201986628.md): Battery · discharged · Jun 19, 2002 · N635US · Boeing 747251B · Emergency Lighting > DURING LINE CHECK, FOUND D-ZONE PATH EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY AND BATTERIES. OPERATIONAL CHECK GOOD. - [SDR 0201976635](https://openairdocs.org/sdr/0201976635.md): Battery Pack · discharged · Jun 15, 2002 · N635US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, FOUND ZONE-A FLOOR PATH EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY AND BATTERY PACK. OPERATIONAL CHECK GOOD. - [SDR 0201806635](https://openairdocs.org/sdr/0201806635.md): Wire · damaged · May 31, 2002 · N635US · Boeing 747227B · Light System Wiring > DURING LINE CHECK, FOUND ZONE -A- LEFT FLOOR PATH EMERGENCY LIGHTS INOPERATIVE. REPAIRED WIRE AND REPLACED THE POWER SUPPLY BOX. OPERATIONAL CHECK GOOD. - [SDR 0101586635](https://openairdocs.org/sdr/0101586635.md): Battery · discharged · May 9, 2001 · N635US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, FOUND ZONE-E EMERGENCY FLOOR ESCAPE PATH LIGHTS INOPERATIVE. REPLACED EMERGENCY LIGHT BATTERY. OPERATIONAL CHECK GOOD. - [SDR 0101686635](https://openairdocs.org/sdr/0101686635.md): Power Supply · inoperative · May 4, 2001 · N635US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, FOUND ZONE-E EMERGENCY FLOOR PATH LIGHTS INOPERATIVE. REPLACED THE POWER SUPPLY. OPERATIONAL CHECK GOOD. - [SDR 0101736635](https://openairdocs.org/sdr/0101736635.md): Battery Pack · inoperative · Apr 27, 2001 · N635US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, FOUND E-ZONE EMERGENCY ESCAPE PATH LIGHTING INOPERATIVE. REPLACED BATTERY PACK. OPERATIONAL CHECK NORMAL. - [SDR 0101426635](https://openairdocs.org/sdr/0101426635.md): Battery Pack · discharged · Apr 19, 2001 · N635US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, MAINTENANCE FOUND E-ZONE EMERGENCY ESCAPE PATH LIGHTING INOPERATIVE. REPLACED THE BATTERY PACK. OPERATIONAL CHECK NORMAL. - [SDR 0101406635](https://openairdocs.org/sdr/0101406635.md): Battery · discharged · Apr 13, 2001 · N635US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, FOUND ZONE-E EMERGENCY ESCAPE PATH FLOOR LIGHTING INOPERATIVE. MAINTENANCE REPLACED THE EMERGENCY LIGHT BATTERY. OPERATIONAL CHECK NORMAL. - [SDR 9904876635](https://openairdocs.org/sdr/9904876635.md): Seat Track · corroded · Oct 22, 1999 · N635US · Boeing 747227B · Fuselage, Seat/Cargo Attach Fittings > DURING M-CHECK, FOUND CORROSION ON SEAT TRACK FLANGE FS 488 - 492, LBL 34. REPAIRED PER EA 66-171513. - [SDR 9904846635](https://openairdocs.org/sdr/9904846635.md): Support · corroded · Oct 22, 1999 · N635US · Boeing 747227B · Fuselage Miscellaneous Structure > DURING M-CHECK, FOUND CORROSION ON MAIN DECK FLOOR SUPPORT FS 520 - 560, RBL 116. REPAIRED PER EA 66-171514. - [SDR 9904866635](https://openairdocs.org/sdr/9904866635.md): Seat Track · deformed · Oct 15, 1999 · N635US · Boeing 747227B · Fuselage, Seat/Cargo Attach Fittings > DURING M-CHECK, FOUND 5 HOLES ELONGATED IN RIGHT FLANGE OF SEAT TRACK FS 1333 - 1349, LBL 75. REPAIRED PER EA 66-171508. - [SDR 9904856635](https://openairdocs.org/sdr/9904856635.md): Floorbeam · corroded · Oct 15, 1999 · N635US · Boeing 747227B · Fuselage Main, Floor Beam > DURING M-CHECK, FOUND FLOORBEAM UPPER FLANGE CORRODED AT FS 1280 - 1304, RBL 34. REPAIRED PER EA 66-171511. - [SDR 9904816635](https://openairdocs.org/sdr/9904816635.md): Frame · cracked · Oct 15, 1999 · N635US · Boeing 747227B · Fuselage Main, Frame > DURING M-CHECK, FOUND CRACK ON FASTENER HOLE A TO EDGE OF FRAME WEB. REPAIRED PER EA 66-171515. - [SDR 9904826635](https://openairdocs.org/sdr/9904826635.md): Spar Web · cracked · Oct 8, 1999 · N635US · Boeing 747227B · Wing Spar > DURING M-CHECK, FOUND CRACK IN MID SPAR WEB INSIDE TANK. REPAIRED PER EA 66-168400. - [SDR 9904836635](https://openairdocs.org/sdr/9904836635.md): Spar Web · corroded · Sep 28, 1999 · N635US · Boeing 747227B · Wing Spar > DURING M-CHECK, FOUND CORROSION ON FRONT SPAR LOWER CHORD. REPAIRED PER EA 66-167487. - [SDR 9903196635](https://openairdocs.org/sdr/9903196635.md): Engine · flamed out · Aug 12, 1999 · N635US · Boeing 747227B · Engine (Turbine/Turboprop) > AFTER ENTERING MODERATE TURBULENCE WITH PRECIPITATION, THE AUTO THROTTLES DISCONNECTED AND THE CREW OBSERVED LOW EGT ON THE NR 3 ENGINE. THE ENGINE FLAMEOUT PROCEDURE WAS FOLLOWED AND THE FIRST RESTART ATTEMPT WAS SUCCESSFUL. ENGINE OPERATION FOR THE REMAIND - [SDR 9810296635](https://openairdocs.org/sdr/9810296635.md): Channel · cracked · Sep 22, 1998 · N635US · Boeing 747227B · Nacelle/Pylon Structure > DURING PERIODIC CHECK, FOUND CRACK IN STIFFENER FLANGE ON NR 4 PYLON BL 0, FS 157. REPAIRED PER EA 66-160980, REV A. - [SDR 9809066635](https://openairdocs.org/sdr/9809066635.md): Control Cable · failed · May 7, 1998 · N635US · Boeing 747227B · Power Lever > UPON APPLICATION OF TAKEOFF POWER, THE CREW NOTICED NO RESPONSE FROM THE NR 3 ENGINE WITH POWER LEVER MOVEMENT. TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE REPLACED THE STRUT AREA PUSH/PULL CABLE AND CONTROL BOX. ENGINE RUN WAS NO - [SDR 9803706635](https://openairdocs.org/sdr/9803706635.md): Engine · malfunctioned · Mar 4, 1998 · N635US · Boeing 747227B · Engine (Turbine/Turboprop) > AFTER A NORMAL START OF THE NR 2 ENGINE AND WHEN STARTING THE NR 3 ENGINE, APPROXIMATELY 2 MINUTES LATER, THE NR 2 ENGINE EGT ROSE TO 550C WITH BOTH N1 AND N2 DECREASING. THE ENGINE WAS SHUT DOWN. GROUND PERSONNEL REPORTED SOME TORCHING VISIBLE FROM THE NR 2 - [SDR 9803126635](https://openairdocs.org/sdr/9803126635.md): Csd · failed · Feb 19, 1998 · N635US · Boeing 747227B · Alternator-Generator Drive > DURING CRUISE, THE NR 1 ENGINE CONSTANT SPEED DRIVE OIL PRESSURE LIGHT ILLUMINATED. SHUT DOWN NR 1 ENGINE DUE TO AN UNSUCCESSFUL ATTEMPT TO DISCONNECT THE CONSTANT SPEED DRIVE. AIRCRAFT DIVERTED TO MNL AND LANDED WITHOUT INCIDENT. REPLACED THE NR 1 ENGINE C - [SDR 9721726635](https://openairdocs.org/sdr/9721726635.md): Switch · failed · Nov 17, 1997 · N635US · Boeing 747227B · Landing Gear Steering System > DURING TAKEOFF, THE BODY GEAR STEERING LIGHT REMAINED ILLUMINATED. AIRCRAFT ABORTED TAKEOFF AND RETURNED TO THE GATE. REPLACED THE BODY GEAR STEERING PRIMARY AND ALTERNATE UNLOCK SWITCHES. OPERATIONAL CHECK GOOD. SPECIFIC PART CAUSING EVENT TO BE DETERMINED - [SDR 9703106635](https://openairdocs.org/sdr/9703106635.md): Bleed Valve · failed · Feb 13, 1997 · N635US · Boeing 747227B · Compressor Bleed Valve > DURING TAKEOFF, THE NR 2 ENGINE DID NOT DEVELOP TAKEOFF POWER. ABORTED TAKEOFF AND RETURNED TO THE GATE. REPLACED THE NR 2 ENGINE START VALVE, HIGH STAGE BLEED VALVE, AND HIGH STAGE CONTROL, OPERATIONAL CHECK GOOD. - [SDR 9703096635](https://openairdocs.org/sdr/9703096635.md): Bleed Valve · failed · Feb 13, 1997 · N635US · Boeing 747227B · Compressor Bleed Valve > DURING TAKEOFF, THE NR 2 ENGINE DID NOT DEVELOP TAKEOFF POWER. ABORTED TAKEOFF AND RETURNED TO THE GATE. REPLACED THE NR 2 ENGINE HIGH STAGE BLEED VALVE AND HIGH STAGE CONTROL, OPERATIONAL CHECK GOOD. - [SDR 9626536635](https://openairdocs.org/sdr/9626536635.md): Connector · loose · Dec 17, 1996 · N635US · Boeing 747227B · Engine EGT/TIT Indicating System > DURING TAKEOFF, THE NR 4 ENGINE EGT INDICATOR WAS ERRATIC. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE FOUND INDICATOR CANNON PLUG LOOSE. CLEANED AND TIGHTENED THE CANNON PLUG, RUN-UP WAS NORMAL AND THE AIRCRAFT RETURNED TO SER - [SDR 9620366635](https://openairdocs.org/sdr/9620366635.md): Controller · malfunctioned · Sep 21, 1996 · N635US · Boeing 747227B · Pneumatic Distribution System > DURING TAKEOFF ROLLOUT, THE NR 2 ENGINE WOULD NOT REACH TAKEOFF EPR. CREW FOLLOWED COM PROCEDURE, ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE FOUND HIGH STAGE CONTROLLER COVER BLOWN OFF. REPLACED THE CONTROLLER AND PNEUMATIC PRESSURE RELIEF VALVE. - [SDR 9614266635](https://openairdocs.org/sdr/9614266635.md): Battery · discharged · Jun 25, 1996 · N635US · Boeing 747227B · Emergency Lighting > DURING LINE CHECK, FOUND 4L OVERWING EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERY, OPERATIONAL CHECK GOOD. - [SDR 9605916635](https://openairdocs.org/sdr/9605916635.md): Hyd Pump · failed · Mar 12, 1996 · N635US · Boeing 747227B · Hydraulic Pump (Electric/Engine), Main > DURING APPROACH, THE NR 1 HYDRAULIC SYSTEM LOST HYDRAULIC FLUID. DECLARED EMERGENCY AND ALTERNATELY EXTENDED LANDING GEAR AND FLAPS. AIRCRAFT LANDED WITHOUT INCIDENT. REPLACED THE NR 1 ENGINE DRIVEN HYDRAULIC PUMP AND OPERATIONAL CHECK GOOD. - [SDR 9518186635](https://openairdocs.org/sdr/9518186635.md): Fittings · corroded · Nov 7, 1995 · N635US · Boeing 747227B · Fuselage Miscellaneous Structure > DURING PERIODIC CHECK, FOUND CORROSION ON THE NR 9 AND NR 13 PORTAL LATCH FITTINGS AND SERRATED PLATES. REPLACED FITTINGS, NR 9 PLATE AND REPAIRED THE WEB BENEATH NR 13 PER SRM 51-40-02. - [SDR 9517716635](https://openairdocs.org/sdr/9517716635.md): Fittings · corroded · Nov 4, 1995 · N635US · Boeing 747227B · Wing, Control Surface Attach Fittings > DURING PERIODIC CHECK, FOUND CORROSION IN THE RIGHT WING OUTBOARD FLAP SIDE LOAD FITTINGS, NR 7 FLAP TRACK, INBOARD AND OUTBOARD. ALSO, NR 8 FLAP TRACK, INBOARD. REPLACED FITTINGS PER CITEXT 04139. - [SDR 9517696635](https://openairdocs.org/sdr/9517696635.md): Fitting · cracked · Nov 2, 1995 · N635US · Boeing 747227B · Nacelle/Pylon, Attach Fittings > DURING PERIODIC CHECK, FOUND A.375 INCH CRACK IN THE NR 3 PYLON STRUT TO DIAGONAL BRACE ATTACH FITTING. REPLACED FITTING PER EA 5440-01025. - [SDR 9518156635](https://openairdocs.org/sdr/9518156635.md): Web · corroded · Oct 28, 1995 · N635US · Boeing 747227B · Fuselage Miscellaneous Structure > DURING PERIODIC CHECK, FOUND CORROSION ON THE BULK CARGO DOOR UPPER SILL WEB BS 2020. REPAIRED WEB (P/N 65B04262-3), PER EA 66-99161. - [SDR 9503016635](https://openairdocs.org/sdr/9503016635.md): Computer · inoperative · Feb 24, 1995 · N635US · Boeing 747227B · Air Data Computer > DURING CRUISE, THE CAPTAIN'S MACH INDICATOR, VSI, TAS INDICATOR, AND EPRL BEGAN TO FLUCTUATE. THE NR 1 AUTO-PILOT AND AUTO-THROTTLES BECAME INOPERATIVE. THE AIRCRAFT DIVERTED TO HNL AND LANDED WITHOUT INCIDENT. REPLACED THE NR 1 CENTRAL AIR DATA COMPUTER. ## 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 = 'N635US' AND deregistration_id = 'N635US-2007-09-26' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/deregistered/N635US-2007-09-26/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.