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A B767-300 flight crew utilized the alternate flap extension procedure for landing when the normal system failed.
| Attributes | |
| ACN | 925598 |
| Time | |
| Date | 201012 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZZ.ARTCC |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Component | |
| Aircraft Component | Flap Control (Trailing & Leading Edge) |
| Person 1 | |
| Function | Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 12000 Flight Crew Type 5000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
At cruise; FL330; got EICAS le slat assym and leading edge light and flap indicator moved to 1/2 degree. Flap handle was in and remained in the up position. Contacted dispatch and maintenance control. Visual inspection confirmed slats and flaps in up position. After reviewing procedures; weather and alternatives; crew and dispatch decided to continue to destination as it was probably a gauge error. Flap indicator moved back to 0 after about 20 minutes.the flight continued without incident. On approach flaps were selected to position 1. The flaps moved to 1/2 degree and stopped. We followed irregular procedures; used the alternate extension system and planned for a flap 20 approach and landing. We needed and were provided extra maneuvering room and time to get flaps out; then flew a cat I approach to an uneventful landing. No emergency was declared; however fire and rescue was in position at the request of the tower.
Original NASA ASRS Text
Title: A B767-300 flight crew utilized the alternate flap extension procedure for landing when the normal system failed.
Narrative: At cruise; FL330; got EICAS LE SLAT ASSYM and Leading Edge light and flap indicator moved to 1/2 degree. Flap handle was in and remained in the UP position. Contacted Dispatch and Maintenance Control. Visual inspection confirmed slats and flaps in up position. After reviewing procedures; weather and alternatives; crew and Dispatch decided to continue to destination as it was probably a gauge error. Flap indicator moved back to 0 after about 20 minutes.The flight continued without incident. On approach flaps were selected to position 1. The flaps moved to 1/2 degree and stopped. We followed irregular procedures; used the alternate extension system and planned for a flap 20 approach and landing. We needed and were provided extra maneuvering room and time to get flaps out; then flew a Cat I approach to an uneventful landing. No emergency was declared; however Fire and Rescue was in position at the request of the Tower.
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.