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An L1011 on climb out discovered the trailing edge flaps did not fully retract but remained at 4 degrees caused by a failed flap actuator.
| Attributes | |
| ACN | 449257 |
| Time | |
| Date | 199909 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : fll.airport |
| State Reference | FL |
| Altitude | msl single value : 23000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mia.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | L-1011 Tri-Star All Series |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : fll 8 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 20000 flight time type : 1000 |
| ASRS Report | 449257 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 300 flight time total : 16000 |
| ASRS Report | 449362 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | aircraft equipment other aircraft equipment : flap position indicator other flight crewa other flight crewb |
| Resolutory Action | other |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
| Air Traffic Incident | Operational Error |
Narrative:
L1011 abnormal flap retraction. Leading edge slats retracted normally, trailing edge flaps observed at 4 degree setting (with flap handle in 'up' position) during climb out. Maintained 4 degree flap maximum airspeed and altitude. After consultation with company maintenance control, continued to destination (atl) at reduced speed and lower altitude. Flap extension normal for uneventful approach and landing. Callback conversation with reporter revealed the following information: reporter stated the flap indication was correct and was not a false indication. The reporter said the report by maintenance was a failed trailing edge flap actuator. The reporter stated the aircraft was back in service after 12 hours.
Original NASA ASRS Text
Title: AN L1011 ON CLBOUT DISCOVERED THE TRAILING EDGE FLAPS DID NOT FULLY RETRACT BUT REMAINED AT 4 DEGS CAUSED BY A FAILED FLAP ACTUATOR.
Narrative: L1011 ABNORMAL FLAP RETRACTION. LEADING EDGE SLATS RETRACTED NORMALLY, TRAILING EDGE FLAPS OBSERVED AT 4 DEG SETTING (WITH FLAP HANDLE IN 'UP' POS) DURING CLBOUT. MAINTAINED 4 DEG FLAP MAX AIRSPD AND ALT. AFTER CONSULTATION WITH COMPANY MAINT CTL, CONTINUED TO DEST (ATL) AT REDUCED SPD AND LOWER ALT. FLAP EXTENSION NORMAL FOR UNEVENTFUL APCH AND LNDG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THE FLAP INDICATION WAS CORRECT AND WAS NOT A FALSE INDICATION. THE RPTR SAID THE RPT BY MAINT WAS A FAILED TRAILING EDGE FLAP ACTUATOR. THE RPTR STATED THE ACFT WAS BACK IN SVC AFTER 12 HRS.
Data retrieved from NASA's ASRS site as of July 2007 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.