 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737-800 flight crew experiences a le flaps transit amber light on and a split flap indicator when flaps 1 is selected during approach. While consulting the QRH the le flaps transit light extinguishes resulting in approach and landing with le flaps extended and te flaps up. Fuel was a consideration as the flight had diverted for weather.
| Attributes | |
| ACN | 1075418 |
| Time | |
| Date | 201303 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Flap/Slat Control System |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
On downwind around 5;000 ft speed 230 KIAS; the first officer (operating experience trainee) called speed below 240 flaps 1. I verified and selected flaps 1. Le flaps transit amber light came on. Flap position needles went to halfway between up and 1 with needles split one needle width. I took over flying the airplane and communicating with ATC. I declared an emergency with ATC. I then directed the first officer to get the QRH out. As we started to look at the procedure for le flaps transit the light went out; and green le flaps ext came on. Flap needles still stuck. Overhead lights indicated all leading edge devices deployed. With split flap needles I performed trailing edge flap asymmetry procedure. Also trailing edge flaps up landing. Performance numbers supported landing on the 12;000 ft long runway. We were diverted due to weather; and landed with 4;800 pounds of fuel. Landing was uneventful. The fire trucks met us mid field and followed us to the pad. We were parked off gate due to other diverts occupying a few gates. Maintenance did an operational check and a byte check on the flaps; and after consulting with maintenance control signed the airplane off and we departed without any further events.
Original NASA ASRS Text
Title: B737-800 flight crew experiences a LE FLAPS TRANSIT amber light on and a split flap indicator when flaps 1 is selected during approach. While consulting the QRH the LE FLAPS TRANSIT light extinguishes resulting in approach and landing with LE flaps extended and TE flaps up. Fuel was a consideration as the flight had diverted for weather.
Narrative: On downwind around 5;000 FT speed 230 KIAS; the First Officer (Operating Experience Trainee) called speed below 240 flaps 1. I verified and selected flaps 1. LE FLAPS TRANSIT amber light came on. Flap position needles went to halfway between UP and 1 with needles split one needle width. I took over flying the airplane and communicating with ATC. I declared an emergency with ATC. I then directed the First Officer to get the QRH out. As we started to look at the procedure for LE FLAPS TRANSIT the light went out; and green LE FLAPS EXT came on. Flap needles still stuck. Overhead lights indicated all leading edge devices deployed. With split flap needles I performed Trailing Edge Flap Asymmetry procedure. Also trailing edge flaps up landing. Performance numbers supported landing on the 12;000 FT long runway. We were diverted due to weather; and landed with 4;800 LBS of fuel. Landing was uneventful. The fire trucks met us mid field and followed us to the pad. We were parked off gate due to other diverts occupying a few gates. Maintenance did an operational check and a byte check on the flaps; and after consulting with Maintenance Control signed the airplane off and we departed without any further events.
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.