EICAS flap asymmetry message causes B757-200 flight crew to return to departure airport.

Attributes
ACN	784362
Time
Date	200804
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 4000
Environment
Weather Elements	Thunderstorm Rain
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : zzz.tracon tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	784362
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : eicas flap wing other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : landed in emergency condition
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

At 210 KTS; the flaps were selected to 1 degree but between 0 and 1 indicated; we received a 'trailing edge flap asymmetrical' EICAS message and the associated amber light on the panel near the flap position indicator. The QRH procedure was followed; an emergency declared with crash fire rescue equipment assistance requested; and the passenger and flight attendants were informed and briefed of the situation. The aircraft landed on runway xx. After a brief inspection by the crash fire rescue equipment for hot brakes; we taxied to the gate without further incident.

Original NASA ASRS Text

Title: EICAS FLAP ASYMMETRY MESSAGE CAUSES B757-200 FLT CREW TO RETURN TO DEP ARPT.

Narrative: AT 210 KTS; THE FLAPS WERE SELECTED TO 1 DEG BUT BTWN 0 AND 1 INDICATED; WE RECEIVED A 'TRAILING EDGE FLAP ASYMMETRICAL' EICAS MESSAGE AND THE ASSOCIATED AMBER LIGHT ON THE PANEL NEAR THE FLAP POS INDICATOR. THE QRH PROC WAS FOLLOWED; AN EMER DECLARED WITH CFR ASSISTANCE REQUESTED; AND THE PAX AND FLT ATTENDANTS WERE INFORMED AND BRIEFED OF THE SITUATION. THE ACFT LANDED ON RWY XX. AFTER A BRIEF INSPECTION BY THE CFR FOR HOT BRAKES; WE TAXIED TO THE GATE WITHOUT FURTHER INCIDENT.

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.