A B767-300 le slat asym EICAS alerted after takeoff with the aircraft in a clean configuration. An e...

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.

Original NASA ASRS Text

Title: 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.

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.

Attributes
ACN	848440
Time
Date	200908
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Flap/Slat Indication
Person 1
Function	Captain Pilot Flying
Person 2
Function	Pilot Not Flying First Officer
Events
Anomaly	Aircraft Equipment Problem Less Severe

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.