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B737-800 first officer inadvertently bumped the flap handle while entering data into the FMC during cruise; causing it to move out of the 'up' detent.
| Attributes | |
| ACN | 1095803 |
| Time | |
| Date | 201306 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Flap/Slat Control System |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Experience | Flight Crew Total 10450 |
| Person 2 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Inflight Event / Encounter Other / Unknown |
Narrative:
I was pilot flying during this event. I was resting my arm on the flap lever; inputting information into the FMS. I felt the flap handle move aft; the aircraft 'raised up a bit;' and the flap position indicator moved from the up position toward the 1 degree mark on the gauge. I immediately moved the handle down into the detent position. I pulled back on the handle to ensure that it was completely in the correct position. This confirmed to me that the flap handle had not been properly seated after takeoff cleanup. We were at FL390; 0.79 mach and 240 KTS. This whole event lasted less than 3 seconds.1
Original NASA ASRS Text
Title: B737-800 First Officer inadvertently bumped the flap handle while entering data into the FMC during cruise; causing it to move out of the 'up' detent.
Narrative: I was pilot flying during this event. I was resting my arm on the flap lever; inputting information into the FMS. I felt the flap handle move aft; the aircraft 'raised up a bit;' and the flap position indicator moved from the up position toward the 1 degree mark on the gauge. I immediately moved the handle down into the detent position. I pulled back on the handle to ensure that it was completely in the correct position. This confirmed to me that the flap handle had not been properly seated after takeoff cleanup. We were at FL390; 0.79 mach and 240 KTS. This whole event lasted less than 3 seconds.1
Data retrieved from NASA's ASRS site as of July 2013 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.