<< >> NASA ASRS Report 989291, January 2012

A B767-300 EICAS alerted aileron lockout while climbing after departure so the decision was made to return to the departure airport where an emergency was declared for an overweight landing.

Attributes
ACN	989291
Time
Date	201201
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
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	Aileron Control System
Person 1
Function	Relief Pilot Pilot Not Flying
Experience	Flight Crew Last 90 Days 180 Flight Crew Total 17658 Flight Crew Type 4200
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Speed All Types

Narrative:

'Aileron lockout' EICAS illuminated through FL210. The entire crew worked the problem including dispatch and maintenance. A joint decision based on current information to return to the departure airport for an overweight landing was made. ATC declared an emergency. Due to the overweight condition; a flap 30 limit speed was exceeded momentarily by 10 KTS by flying pilots; a good reason [for us] to have dumped fuel in my opinion.

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Original NASA ASRS Text

Title: A B767-300 EICAS alerted AILERON LOCKOUT while climbing after departure so the decision was made to return to the departure airport where an emergency was declared for an overweight landing.

Narrative: 'Aileron Lockout' EICAS illuminated through FL210. The entire crew worked the problem including Dispatch and Maintenance. A joint decision based on current information to return to the departure airport for an overweight landing was made. ATC declared an emergency. Due to the overweight condition; a flap 30 limit speed was exceeded momentarily by 10 KTS by flying pilots; a good reason [for us] to have dumped fuel in my opinion.

Data retrieved from NASA's ASRS site as of July 2013 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.