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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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B767-300 developed a flap asymmetry during flap retraction. Procedures for the anomaly were completed and the flight returned to departure airport.
| Attributes | |
| ACN | 783481 |
| Time | |
| Date | 200804 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sfo.airport |
| State Reference | CA |
| Altitude | msl single value : 8000 |
| Aircraft 1 | |
| Controlling Facilities | tracon : nct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 240 flight time total : 14000 flight time type : 500 |
| ASRS Report | 783465 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 783485 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | aircraft equipment other aircraft equipment : eicas |
| Resolutory Action | flight crew : diverted to another airport flight crew : landed as precaution |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
On takeoff and retracting flaps; had a slat asymmetry. Leveled off at 15000 ft and remained at 230 KTS while working the problem. After speaking with dispatch; decided to land overweight versus burn the 20000 pounds of fuel. Had a plenty long runway; even with a flaps 20 degree (as required) landing. On descent the slat asymmetry went away. We were able to make a flaps 30 degree landing and the landing was uneventful.
Original NASA ASRS Text
Title: B767-300 DEVELOPED A FLAP ASYMMETRY DURING FLAP RETRACTION. PROCEDURES FOR THE ANOMALY WERE COMPLETED AND THE FLT RETURNED TO DEP ARPT.
Narrative: ON TKOF AND RETRACTING FLAPS; HAD A SLAT ASYMMETRY. LEVELED OFF AT 15000 FT AND REMAINED AT 230 KTS WHILE WORKING THE PROB. AFTER SPEAKING WITH DISPATCH; DECIDED TO LAND OVERWT VERSUS BURN THE 20000 LBS OF FUEL. HAD A PLENTY LONG RWY; EVEN WITH A FLAPS 20 DEG (AS REQUIRED) LNDG. ON DSCNT THE SLAT ASYMMETRY WENT AWAY. WE WERE ABLE TO MAKE A FLAPS 30 DEG LNDG AND THE LNDG WAS UNEVENTFUL.
Data retrieved from NASA's ASRS site as of May 2009 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.