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A B737-700 flaps and slats did not move with flap selections. The QRH was completed; flaps 15 alternate flaps followed by an uneventful landing. A faulty sensor was discovered. The new QRH procedure is complex.
| Attributes | |
| ACN | 1300395 |
| Time | |
| Date | 201510 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| 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 |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 146 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy |
Narrative:
When configuring for landing; the trailing edge flaps and leading edge devices did not move when the flap handle was moved. The approach was discontinued; the situation was discussed with ATC; and a long final approach to 25R was arranged. The flight attendants and passengers were briefed. Due to abnormal flap system operation rescue services were requested. The aircraft was light weight with no landing performance issues indicated.flaps were positioned to 15 using alternate flaps. An uneventful landing was accomplished with a termination of the emergency shortly after clearing the runway. Maintenance was notified; a logbook write up was accomplished; and I received a call from dispatch. Later that day I contacted maintenance control and was told that a faulty sensor had caused the problem. If there are any questions please contact me.reviewing this event; I would suggest a change in title to the 'trailing edge flap disagree' QRH checklist to include 'no flap movement with flap lever'.the new QRH has many changes. It is a complex document that needs to be aggressively trained. Self-study can only go so far in ensuring correct operational knowledge and use of the document.
Original NASA ASRS Text
Title: A B737-700 flaps and slats did not move with flap selections. The QRH was completed; flaps 15 alternate flaps followed by an uneventful landing. A faulty sensor was discovered. The new QRH procedure is complex.
Narrative: When configuring for landing; the trailing edge flaps and leading edge devices did not move when the flap handle was moved. The approach was discontinued; the situation was discussed with ATC; and a long final approach to 25R was arranged. The flight attendants and passengers were briefed. Due to abnormal flap system operation rescue services were requested. The aircraft was light weight with no landing performance issues indicated.Flaps were positioned to 15 using alternate flaps. An uneventful landing was accomplished with a termination of the emergency shortly after clearing the runway. Maintenance was notified; a logbook write up was accomplished; and I received a call from Dispatch. Later that day I contacted Maintenance Control and was told that a faulty sensor had caused the problem. If there are any questions please contact me.Reviewing this event; I would suggest a change in title to the 'Trailing edge flap disagree' QRH checklist to include 'no flap movement with flap lever'.The new QRH has many changes. It is a complex document that needs to be aggressively trained. Self-study can only go so far in ensuring correct operational knowledge and use of the document.
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.