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B747-400 dumps fuel and returns to departure airport when landing gear fails to retract after takeoff.
| Attributes | |
| ACN | 830974 |
| Time | |
| Date | 200904 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Gear Extend/Retract Mechanism |
| Person 1 | |
| Function | Captain Pilot Flying |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 18000 Flight Crew Type 10000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
I was flying the takeoff from ZZZ. I called for the gear up and the captain raised the gear handle and it would not go past the off position. The gear tilt message was displayed and the gear disagree message was displayed shortly there after. Captain directed me to continue to fly the aircraft and talk on the radios. Captain and the other first officer ran the gear tilt procedure and then the gear disagree procedure. Prior to the procedure we cleaned up the aircraft and flew at 255 KTS and told ATC we would like to stay at 5000 ft and have vectors over the water so we could run the checklists. After talking to maintenance through dispatch; we agreed to dump fuel and return to ZZZ. Gear handle was placed in down position per the checklist and checked normal. ATC declared an emergency for us and fire equipment was standing by. Captain took control of the aircraft for landing and it was uneventful. Aircraft was checked on taxiway by maintenance and fire fighters. We were cleared to taxi to the gate.
Original NASA ASRS Text
Title: B747-400 dumps fuel and returns to departure airport when landing gear fails to retract after takeoff.
Narrative: I was flying the takeoff from ZZZ. I called for the gear up and the Captain raised the gear handle and it would not go past the off position. The gear tilt message was displayed and the gear disagree message was displayed shortly there after. Captain directed me to continue to fly the aircraft and talk on the radios. Captain and the other First Officer ran the gear tilt procedure and then the gear disagree procedure. Prior to the procedure we cleaned up the aircraft and flew at 255 KTS and told ATC we would like to stay at 5000 FT and have vectors over the water so we could run the checklists. After talking to maintenance through dispatch; we agreed to dump fuel and return to ZZZ. Gear handle was placed in down position per the checklist and checked normal. ATC declared an emergency for us and fire equipment was standing by. Captain took control of the aircraft for landing and it was uneventful. Aircraft was checked on taxiway by maintenance and fire fighters. We were cleared to taxi to the gate.
Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.