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A B737-400 flight crew encountered asymmetric flap extension on final approach.
| Attributes | |
| ACN | 914436 |
| Time | |
| Date | 201010 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Flap Control (Trailing & Leading Edge) |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Turning base to final for a visual approach to the runway; the first officer called for flaps to 25 and then to flaps 30 in order to finish landing configuration. When I selected flap handle to 25 and then to 30; noticed that the flap gage indicated asymmetric flaps between 15 and 25. We broke off the approach and flew out to the north of the airport where I ran the QRH for this flap problem. I notified operations and dispatch of the problem and also relayed our intention to land at our destination with the flaps non-normal. I then briefed the flight attendants and the passengers.an emergency was declared with approach and crash fire rescue equipment equipment was called to standby. The QRH items were finished and the approach was commenced again with the first officer continuing to fly while I performed the pilot not flying duties. Aircraft landed in a flap 15 condition with adequate runway length available for the condition of the aircraft. Touchdown was around 154 KTS and a normal rollout proceeded.I took the aircraft at 80 KTS and turned off at the end of the runway and taxied to the gate where the passengers were deplaned. Dispatch and maintenance control were called to coordinate repairs to the aircraft.
Original NASA ASRS Text
Title: A B737-400 Flight Crew encountered asymmetric flap extension on final approach.
Narrative: Turning base to final for a visual approach to the runway; the First Officer called for flaps to 25 and then to flaps 30 in order to finish landing configuration. When I selected flap handle to 25 and then to 30; noticed that the flap gage indicated asymmetric flaps between 15 and 25. We broke off the approach and flew out to the north of the airport where I ran the QRH for this flap problem. I notified Operations and Dispatch of the problem and also relayed our intention to land at our destination with the flaps non-normal. I then briefed the Flight Attendants and the passengers.An emergency was declared with approach and CFR equipment was called to standby. The QRH items were finished and the approach was commenced again with the First Officer continuing to fly while I performed the pilot not flying duties. Aircraft landed in a flap 15 condition with adequate runway length available for the condition of the aircraft. Touchdown was around 154 KTS and a normal rollout proceeded.I took the aircraft at 80 KTS and turned off at the end of the runway and taxied to the gate where the passengers were deplaned. Dispatch and Maintenance Control were called to coordinate repairs to the aircraft.
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.