# Service difficulty reports: Boeing 747-475

A list on [Boeing 747-475](https://openairdocs.org/model/boeing-747-475.md).

Newest first. General aviation reporting is voluntary.

- [SDR CA031020005](https://openairdocs.org/sdr/CA031020005.md): Odor · detected · Oct 16, 2003 · Boeing 747475 · Air Distribution System
  > (CAN) AFTER T/O THRU 8,000 FT HAD A STRONG ODOR OF SMOKE IN C/P CABIN. THE ODOR WAS SULPHERUS AND NOT ELECTRICAL. TURNED OFF RECERC AND GASPER FANS AND ODOR DISSAPPEARED. FLT CONTINUED TO DESTINATION AND NO FURTHER FAULT.
- [SDR CA021121002](https://openairdocs.org/sdr/CA021121002.md): Fairing · damaged · Nov 20, 2002 · Boeing 747475 · Wing Structure
  > (CAN) PANELS 462EL AND 462FL FOUND MISSING OFF NR 2 ENGINE PYLON AND NR 1 TRAILING EDGE FLAP AND CANOE FAIRING FOUND DAMAGED ON WALK AROUND. AIRCRAFT WAS ON A DELIVERY FLIGHT AFTER HAVING UNDER GONE A HEAVY MAINTENANCE VISIT IN SINGAPORE. AIRCRAFT RELEASED FRO
- [SDR CA020315007](https://openairdocs.org/sdr/CA020315007.md): Tube · cracked · Mar 6, 2002 · Boeing 747475 · Turbine Engine Compressor Section
  > (CAN) ON CLIMB, EICAS ENGINE OVERHEAT NR 2 NAC. FLIGHT CREW FOLLOWED THE CHECK LIST, BLEED OFF, MESSAGE REMAINED. REDUCED THRUST TO APPROX 75 PERCENT POWER, MESSAGE DISAPPEARED. AIRCRAFT RETURNED TO HAWAII. FOUND CRACK AT UPPER BEND OF NR 2 HP TURBINE COOLIN
- [SDR CA020228002](https://openairdocs.org/sdr/CA020228002.md): Bearing · cracked · Jan 23, 2002 · Boeing 747475 · Main Landing Gear Attach Section
  > (CAN) RT BODY GEAR RETRACT ACTUATOR,, LOWER BEARING FAILED.FOUND SPHERICAL BEARING INNER RACE CRACKED THROUGH. LARGE PIECE OF INNER RACE BROKEN OUT. ROLLERS CORRODED AND MISSING. WATER INGRESSION TO BEARING EVIDENT UPON DISASSEMBLY. HIGH LEVEL OF CORROSION
- [SDR CA010905008](https://openairdocs.org/sdr/CA010905008.md): Sleeve · shorted · Jul 17, 2001 · Boeing 747475 · Lavatories
  > (CAN) A/C 381 M FOUND DURING UNRELATED ROUTINE MAINT IN AREA. EVIDENCE OF FIRE DAMAGE CAUSED BY SHORTED LEAD AT WASTER TANK DUMP VALVE HEATER SLEEVE. FIRE TRACK WAS FOLLOWED FROM SOURCE FWD THROUGH LIGHTNING HOLE OF ADJACENT STRUCTURE, & UPWARD ALONG FRAME TO
- [SDR CA000518004](https://openairdocs.org/sdr/CA000518004.md): Engine · failed · May 11, 2000 · Boeing 747475 · Engine (Turbine/Turboprop)
  > (CAN) NR 2 ENGINE SHUT DOWN DUE TO HIGH VIBRATIONS NO OTHER DETAILS SUBMITTED.
- [SDR CA000209007](https://openairdocs.org/sdr/CA000209007.md): Fire Loop · chafed · Feb 3, 2000 · Boeing 747475 · Fire Detection
  > (CAN) APU FIRE WARNING CAME ON DURING CLIMB FIRE BOTTLE DISCHARGED AND STILLWARNING ON A/C RETURNED. FOUND WIRING CHAFFED AND SHORTED BENEATH SUPPORT CLAMP. REPAIRED.
- [SDR CA000118018](https://openairdocs.org/sdr/CA000118018.md): Blade · seized · Jan 7, 2000 · Boeing 747475 · Turbine Section
  > (CAN) ENGINE WAS SHUTDOWN DUE TO VIBRATION. INSPECTION REVEALED LPT BLADES DAMAGED AND ENGINE SEIZED. SECONDARY DAMAGE TO OUTBRD AILERON WAS EXPERIENCED. REPORT TO FOLLOW.
- [SDR CA000110019](https://openairdocs.org/sdr/CA000110019.md): Blade · seized · Jan 3, 2000 · Boeing 747475 · Turbine Section
  > (CAN) ENGINE WAS SHUTDOWN DUE TO VIBRATION. INSPECTION REVEALED LPT BLADES DAMAGED AND ENGINE SEIZED. SECONDARY DAMAGE TO OUTBRD AILERON WAS EXPERIENCED. REPORT TO FOLLOW.
- [SDR CA991208053](https://openairdocs.org/sdr/CA991208053.md): Oxygen Masks · failed · Nov 15, 1999 · Boeing 747475 · Passenger Oxygen System
  > (CAN) DURING INSPECTION, OXYGEN MASKS DID NOT DEPLOY PROPERLY FROM PASSENGER CONTROL UNITS. MASKS INCORRECTLY PACKED. ALL MASKS PACKED PER MM.
- [SDR CA990728021](https://openairdocs.org/sdr/CA990728021.md): Coupling · disconnected · Jul 15, 1999 · Boeing 747475 · Aircraft Fuel Distribution System
  > (CAN) UNABLE TO TRANSFER FUEL FROM 4 MAIN TANK TO 3 MAIN FUEL TANK. FUEL DUMPED AND AC DIVERTED. FOUND RIGID COUPLING FOR 3 RESERVE TRANSFER FUEL LINE TO 3 MAIN TANK ADRIFT. LINE RECONNECTED WITH NEW O-RING, LEAK CHECK SERVICED.
- [SDR CA990719006](https://openairdocs.org/sdr/CA990719006.md): Case · deformed · May 24, 1999 · Boeing 747475 · Passenger Compartment Equipment
  > (CAN) SEAT TELEPHONE BOXES 7 WIRE CORD REELS EXCESSIVELY HOT AND CASE DEFORMED. REFER TO ASB 6600-23-04.
- [SDR CA990310041](https://openairdocs.org/sdr/CA990310041.md): Valve · failed · Nov 24, 1998 · Boeing 747475 · Aircraft Fuel Distribution System
  > (CAN) PRIOR TO PUSHBACK, FUEL SPILL OCCURRED FROM SURGE TANK VENT HOLE. NR 3 FUEL TANK OVERFILL DUE TO UNCOMMANDED FUEL TRANSFER. AIRCRAFT HAD JUST COMPLETED MAINT AND NR 3 JETTISON OVERRIDE PUMP HOUSING AND CHECK VALVE REPLACED. SEALS RUPTURED DUE TO OVERT
- [SDR CA980602021](https://openairdocs.org/sdr/CA980602021.md): Slide · deployed · May 1, 1998 · Boeing 747475 · Escape Slide
  > (CAN) UPPER DECK R/H SLIDE ASSY ACCIDENTLY DEPLOYED DUE FLIGHT CREW L/H AND R/H UPPER DECK DOORS ARMED UPON ARRIVAL. SLIDE DEPLOYED CAUSING DAMAGE TO PACK BOARD. DAMAGE CAUSED BY LANYARD PIN INSTALLED INCORRECTLY ALLOWING BOTTLES TO INITIATE INFLATION PRIOR
- [SDR CA971216029](https://openairdocs.org/sdr/CA971216029.md): Impeller · worn · Mar 17, 1998 · Boeing 747475 · Fuel Boost Pump
  > (CAN) OVERRIDE JETTISON PUMP IMPELLER SHROUD WORN FROM CONTACT WITH THEIR RESPECTIVE INLET CHECK VALVES. SHROUD HAD BEEN WORN DOWN ENOUGH TO CAUSE IMPELLER DAMAGE. ALSO, THE DISCHARGE CHECK VALVE WAS WORN INTO THE ATTACHED FUEL PIPES. ALL REPLACED.
- [SDR CA971113015](https://openairdocs.org/sdr/CA971113015.md): O-Ring · missing · Oct 20, 1997 · Boeing 747475 · Brake
  > (CAN) ON DISASSEMBLY OF BRAKE PISTON, FOUND "O" RING MISSING. REPLACED.
- [SDR CA970731005](https://openairdocs.org/sdr/CA970731005.md): Valve · worn · Jul 22, 1997 · Boeing 747475 · Aircraft Fuel Distribution System
  > (CAN) FOUND WHEN INVESTIGATING FUEL IMBALANCE. WEAR CAUSED BY INLET CHECK VALVE TO IMPELLER AND IMPELLER HOUSING, DEBRIS FROM WEAR CAUSING DAMAGE TO MAIN ROTOR. REPLACED.
- [SDR CA970626002](https://openairdocs.org/sdr/CA970626002.md): Clamp · worn · Jun 20, 1997 · Boeing 747475 · Overheat Detection
  > (CAN) ECIAS MESSAGE "DETECT FIRE/OHT 2". AIRCRAFT RETURNED. LOWER AFT LPB ELEMENT OPEN, REPLACED. FIVE CLAMPS WORN ON LOOP A WEARING INTO WIRE REPAIRED.
- [SDR CA970508007](https://openairdocs.org/sdr/CA970508007.md): Input Rod · worn · May 2, 1997 · Boeing 747475 · Brake
  > (CAN) DURING BRAKE SYSTEM FUNCTIONAL CHECK GRATING NOISE HEARD WHEN BRAKE PEDALS MOVED. FOUND WEAR ON #3 AND #4 BRAKE CONTROL INPUT RODS, ONE ROD WORN.040". WEARING ON TEFLON WEAR BLOCKS ATTACHED TO FUSELAGE STRUCTURE. RODS REPLACED AND CLEARANCE PROVIDED.
- [SDR CA970731004](https://openairdocs.org/sdr/CA970731004.md): Valve · worn · Apr 28, 1997 · Boeing 747475 · Aircraft Fuel Distribution System
  > (CAN) DURING TORUBLE SHOOTING FOR FUEL IMBALANCE DISCREPANCIES FOUND INLET CHECK VALVE WEARING INTO PUMP INLET IMPELLER, DEBRIS CAUSING DAMAGE TO MAIN PUMP ROTOR. REPLACED.
- [SDR CA970109005](https://openairdocs.org/sdr/CA970109005.md): Switch · failed · Jan 6, 1997 · Boeing 747475 · Landing Gear Position and Warning
  > (CAN) EICAS STATUS MESSAGE, GEAR MONITOR. CMC CORROLATED MESSAGE, LH BODY GEAR TRUCK TILT ALT. PROXIMITY SENSOR WIRE FAIL. S612 SENSOR REPLACED.
- [SDR CA960711007](https://openairdocs.org/sdr/CA960711007.md): Transformer · burnt · Jul 10, 1996 · Boeing 747475 · Stall Warning System
  > (CAN) LH ANGLE OF ATTACK SENSOR FAILED. ON INSTALL ANGLE OF ATTACK SENSOR TRANSFORMER OVERHEATED AND CAUSED BURNING SMELL IN COCKPIT. TRANSFORMER SELF DESTRUCTED. REPLACED.
- [SDR CA960524007](https://openairdocs.org/sdr/CA960524007.md): Regulator · out of tolerance · May 1, 1996 · Boeing 747475 · Escape Slide
  > (CAN)DURING A SAMPLE DEPLOYMENT OF A SLIDE/RAFT FROM A 747 PASSENGER DOOR, THE SLIDE/RAFT FAILED TO DEPLOY. THE INFLATION CYLINDER REGULATOR WAS SENT TO THE MANUFACTURER FOR EXAMINATION. THE EXAMINATION SH OWED THAT THE INFLATION CYLINDER REGULATOR AND TEMPERA
- [SDR CA951219103](https://openairdocs.org/sdr/CA951219103.md): Bolt · sheared · Dec 27, 1995 · Boeing 747475 · Trailing Edge Flaps
  > (CAN)DURING ROUTINE INSPECITON AND RETORQUE OF THE MAIN FLAP CARRIAGE SPINDLE RETAINING NUTS, THE #1 T.E. FLAP SPINDLE NUT RETAINER HAD FALLEN OUT OF POSITION AND DAMAGED THE STRUCTURE. INSPECTION REVEALED THAT THE RETAINER NUT LOCK BOLT HAD SHEARED DUE TO H
- [SDR CA951219101](https://openairdocs.org/sdr/CA951219101.md): Bracket · worn · Nov 23, 1995 · Boeing 747475 · Elevator Control System
  > (CAN)DURING "D" CHECK FOUND THE PRIMARY ELEVATOR CABLE E1A NOT FITTED TO ITS PULLEY AT STN 1310. CABLE HAS CUT ITS WAY THROUGH THE PULLEY FRAME ASSEMBLY BOTH FORWARD AND AFT OF THE PULLEY. BOTH PULLEY AXLEBOLT AND CABLE GUIDE BOLT FITTED AND STILL SEALED WITH

## 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 = '747475'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/boeing-747-475/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.