 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B757-200 captain reported that during descent he was unable to move the left thrust lever.
| Attributes | |
| ACN | 1517317 |
| Time | |
| Date | 201802 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Throttle/Power Lever |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
During our descent through 30;000 feet I noticed a large split between thrust levers. I attempted to even up the thrust levers and discovered that I was unable to move the left thrust lever. We disconnected the auto throttles to see if they might be part of the problem. The left thrust lever remained in a fixed position. Priority handling was requested and we were granted direct to the airport. We continued to work the problem and requested assistance from maintenance control. As we were passing through 23;000 feet I was able to free the left thrust lever from its fixed position. Thrust levers remained normal for the remainder of the flight. [We advised ATC] in case of a re-occurrence. Taxied to the gate after being inspected by crash fire rescue equipment and made a logbook entry for the malfunction.we suspect there may have been some moisture that had frozen somewhere in the thrust lever linkage during cruise. The airplane had been sitting all weekend with snow and ice on it until it was deiced [that] night. Without knowing the exact cause of the problem I would not be able to suggest a way to prevent this malfunction.
Original NASA ASRS Text
Title: B757-200 Captain reported that during descent he was unable to move the left thrust lever.
Narrative: During our descent through 30;000 feet I noticed a large split between thrust levers. I attempted to even up the thrust levers and discovered that I was unable to move the left thrust lever. We disconnected the auto throttles to see if they might be part of the problem. The left thrust lever remained in a fixed position. Priority handling was requested and we were granted direct to the airport. We continued to work the problem and requested assistance from maintenance control. As we were passing through 23;000 feet I was able to free the left thrust lever from its fixed position. Thrust levers remained normal for the remainder of the flight. [We advised ATC] in case of a re-occurrence. Taxied to the gate after being inspected by CFR and made a logbook entry for the malfunction.We suspect there may have been some moisture that had frozen somewhere in the thrust lever linkage during cruise. The airplane had been sitting all weekend with snow and ice on it until it was deiced [that] night. Without knowing the exact cause of the problem I would not be able to suggest a way to prevent this malfunction.
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.