B757 first officer reports le slat disagree EICAS message during flap retraction on departure. QRH p...

Narrative:

During climbout; selecting flaps up; the leading edge light illuminated with le (leading edge)/slat disagree EICAS; captain called for clean maneuvering speed so we do not overspeed flaps and we are protected if the flaps are actually up. [We] asked ATC for level off at 10;000 ft and a vector away from mountains. During vectors we ran the le/slat disagree checklist which led us to le/slat asymmetry checklist. The captain radioed dispatch and coordinated with the flight attendants of our intention to return. We declared an emergency requested the long runway for a flaps 20 landing as per checklist. [We had a] successful landing and rollout; no other abnormalities noted. Fire/rescue crew visually checked our brakes. We then taxied back to gate.

Original NASA ASRS Text

Title: B757 First Officer reports LE Slat Disagree EICAS message during flap retraction on departure. QRH procedures are complied with; an emergency is declared; and the flight returns to the departure airport for a flaps 20 landing.

Narrative: During climbout; selecting Flaps up; the leading edge light illuminated with LE (leading edge)/Slat Disagree EICAS; Captain called for clean maneuvering speed so we do not overspeed flaps and we are protected if the flaps are actually up. [We] asked ATC for level off at 10;000 FT and a vector away from mountains. During vectors we ran the LE/Slat Disagree Checklist which led us to LE/Slat Asymmetry Checklist. The Captain radioed Dispatch and coordinated with the flight attendants of our intention to return. We declared an emergency requested the long runway for a flaps 20 landing as per checklist. [We had a] successful landing and rollout; no other abnormalities noted. Fire/rescue crew visually checked our brakes. We then taxied back to gate.

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	902261
Time
Date	201007
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Flight Plan	IFR
Component
Aircraft Component	Leading Edge Slat
Person 1
Function	Pilot Not Flying
Experience	Flight Crew Last 90 Days 220 Flight Crew Total 13450 Flight Crew Type 4010
Events
Anomaly	Aircraft Equipment Problem Less Severe

B757 first officer reports le slat disagree EICAS message during flap retraction on departure. QRH procedures are complied with; an emergency is declared; and the flight returns to the departure airport for a flaps 20 landing.