A B767-300 LE SLAT ASYM EICAS alerted after takeoff with the aircraft in a clean configuration. An emergency was declared for a return to land with Flaps 20. During the approach the LE SLAT ASYM EICAS warning cleared.
Synopsis
A B767-300 LE SLAT ASYM EICAS alerted after takeoff with the aircraft in a clean configuration. An emergency was declared for a return to land with Flaps 20. During the approach the LE SLAT ASYM EICAS warning cleared.
Narrative
After aircraft cleanup and on autopilot at 7000 FT; LE SLAT ASYM EICAS message with flap position indication between up and 1 occurred. We ran the QRH procedure for our condition which required normal hydraulic flap extension limited to 20 degrees and ground proximity flap override switch selection. We declared an emergency with Departure and were vectored to the longest runway. While on base to final the ASYM EICAS message and flap position returned to normal while still in clean configuration. We were below max landing weight and selected flaps 20 per QRH and landed with Airport Rescue and Fire Fighting vehicles waiting. They advised all clear and followed us to the gate. First Officer did an outstanding job running all the appropriate checklists and coordinated communications with the various agencies to affect a smooth outcome to the flight. The flight attendants also handled their cabin duties professionally ensuring the accomplishment of the safety briefings of our customers in a manner that portrayed calm confidence of the situation. They are to be commended with my thanks.
Second reporter narrative
After aircraft cleanup and on autopilot at 7000 FT; LE SLAT ASYM EICAS message with flap position indication between up and 1. We ran the QRH procedure for our problem. We declared an emergency with Center and were vectored to the longest runway. While on final the EICAS message and the flap gauge cleared themselves. We landed under maximum landing weight and with Flaps 20 per the QRH. The Airport Rescue and Fire Fighting met us on the ground (checked for hot brakes) and followed us to the gate.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.