Narrative:

While doing preflight departure checks we found an antiskid light on the EICAS along with a status message regarding normal antiskid that could not be erased. We wrote it up and then further explored the problem. I found the parking brake valve circuit breaker was out. We flew the aircraft in the night before and had no problem. We asked maintenance and station why this could have happened. I was told it was normal procedure to pull this circuit breaker when towing off the gate for the night. I assume this is to trap brake fluid or something along those lines. With the aircraft chocked; is this overkill? Should the ramp personnel be pulling circuit breakers in the aircraft that are not capped? Should they be pulling them if they are not remembering to put them back in? I have been on the aircraft for a long time and have never heard of this procedure; not to say I have heard them all but it did surprise me to hear this is 'standard' procedure. We corrected the problem and had maintenance send the new release and departed on time if not a few minutes early.

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Original NASA ASRS Text

Title: A B757-200 Captain questioned the propriety of ground crews pulling the antiskid valve circuit breaker on aircraft overnights.

Narrative: While doing preflight departure checks we found an antiskid light on the EICAS along with a status message regarding normal antiskid that could not be erased. We wrote it up and then further explored the problem. I found the parking brake valve circuit breaker was out. We flew the aircraft in the night before and had no problem. We asked maintenance and station why this could have happened. I was told it was normal procedure to pull this circuit breaker when towing off the gate for the night. I assume this is to trap brake fluid or something along those lines. With the aircraft chocked; is this overkill? Should the ramp personnel be pulling circuit breakers in the aircraft that are not capped? Should they be pulling them if they are not remembering to put them back in? I have been on the aircraft for a long time and have never heard of this procedure; not to say I have heard them all but it did surprise me to hear this is 'Standard' procedure. We corrected the problem and had maintenance send the new release and departed on time if not a few minutes early.

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.