Narrative:

After initial throttle application for a static runup and release of the brakes for takeoff (+/-10 KIAS), I relinquished the throttles to the captain. Just after xfer, a master caution light illuminated and a message on the overhead panel came on. The captain immediately started retarding the throttle (later conveyed that he thought there was an engine problem). The overhead light illuminated was an aft cargo door light. As soon as the captain realized this, he advanced the throttles again and engaged the autothrottle. We continued the takeoff without further incident and the caution light went out after liftoff. This occurrence happened in a span of about 5 seconds. After further discussion with the captain, we both decided that the captain should have made better analysis of the problem prior to taking any action.

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Original NASA ASRS Text

Title: ACR FLC EXPERIENCES CAUTION LIGHT CONFUSION ON TKOF ROLL AT CYUL, BUT CONTINUES TKOF.

Narrative: AFTER INITIAL THROTTLE APPLICATION FOR A STATIC RUNUP AND RELEASE OF THE BRAKES FOR TKOF (+/-10 KIAS), I RELINQUISHED THE THROTTLES TO THE CAPT. JUST AFTER XFER, A MASTER CAUTION LIGHT ILLUMINATED AND A MESSAGE ON THE OVERHEAD PANEL CAME ON. THE CAPT IMMEDIATELY STARTED RETARDING THE THROTTLE (LATER CONVEYED THAT HE THOUGHT THERE WAS AN ENG PROB). THE OVERHEAD LIGHT ILLUMINATED WAS AN AFT CARGO DOOR LIGHT. AS SOON AS THE CAPT REALIZED THIS, HE ADVANCED THE THROTTLES AGAIN AND ENGAGED THE AUTOTHROTTLE. WE CONTINUED THE TKOF WITHOUT FURTHER INCIDENT AND THE CAUTION LIGHT WENT OUT AFTER LIFTOFF. THIS OCCURRENCE HAPPENED IN A SPAN OF ABOUT 5 SECONDS. AFTER FURTHER DISCUSSION WITH THE CAPT, WE BOTH DECIDED THAT THE CAPT SHOULD HAVE MADE BETTER ANALYSIS OF THE PROB PRIOR TO TAKING ANY ACTION.

Data retrieved from NASA's ASRS site as of July 2007 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.