 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B777 captain reported experiencing multiple instances of the climb power setting reverting to a degraded mode without any input from the flight crew.
| Attributes | |
| ACN | 1374619 |
| Time | |
| Date | 201607 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 75 Flight Crew Total 25000 Flight Crew Type 426 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
As we accelerated for takeoff the aircraft seemed slightly sluggish. I called V1 and rotate and the first officer rotated and we took off. As we were in the initial climb phase I noticed that climb-2 was our power setting. We selected takeoff again and continued our climbout. The rest of the trip was uneventful. This is a recurring issue with the 777. At some point in the performance loading; the climb power will occasionally go to the derated mode. The first officer did not catch it on the before takeoff checklist; and the relief pilot and I both missed it on the takeoff roll. Had this been a heavier airplane or a shorter runway we could have really had a worse outcome.
Original NASA ASRS Text
Title: B777 Captain reported experiencing multiple instances of the climb power setting reverting to a degraded mode without any input from the flight crew.
Narrative: As we accelerated for takeoff the aircraft seemed slightly sluggish. I called V1 and rotate and the FO rotated and we took off. As we were in the initial climb phase I noticed that CLB-2 was our power setting. We selected takeoff again and continued our climbout. The rest of the trip was uneventful. This is a recurring issue with the 777. At some point in the performance loading; the climb power will occasionally go to the derated mode. The FO did not catch it on the Before Takeoff checklist; and the relief pilot and I both missed it on the takeoff roll. Had this been a heavier airplane or a shorter runway we could have really had a worse outcome.
Data retrieved from NASA's ASRS site 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.