A B767-300's left engine anti-ice valve failed to open when selected in flight. The QRH had no solut...

Attributes
ACN	880785
Time
Date	201003
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Environment
Flight Conditions	IMC
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	Engine Air Anti-Ice
Person 1
Function	Captain Pilot Not Flying
Person 2
Function	Relief Pilot Pilot Not Flying
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

After takeoff and climbing to cruise altitude; engine anit-ice (a/I) selected on prior to entering thin clouds. Left engine valve light accompanied by left engine a/I valve EICAS message. Followed QRH procedure to no avail. Contacted dispatch via satcom; conferred with maintenenace; no remedy available. Decision to return to the departure airport. Declared emergency due to overweight landing. Landed uneventfully. Taxied to parking stand escorted by airfield rescue and fire fighter.

Original NASA ASRS Text

Title: A B767-300's left engine anti-ice valve failed to open when selected in flight. The QRH had no solution so an emergency was declared with a return to land at the departure airport.

Narrative: After takeoff and climbing to cruise altitude; engine anit-ice (A/I) selected ON prior to entering thin clouds. Left engine valve light accompanied by L ENG A/I VALVE EICAS message. Followed QRH procedure to no avail. Contacted Dispatch via SATCOM; conferred with maintenenace; no remedy available. Decision to return to the departure airport. Declared emergency due to overweight landing. Landed uneventfully. Taxied to parking stand escorted by Airfield Rescue and Fire Fighter.

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.