Flight crew allows aircraft to roll back after parking.

Attributes
ACN	306885
Time
Date	199506
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dtw
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 14108 flight time type : 7768
ASRS Report	306885
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	non adherence : published procedure other anomaly
Independent Detector	other other : unspecified cockpit
Resolutory Action	flight crew : regained aircraft control
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

I pulled into our gate, after a 5-DAY exhausting trip. What I thought was a chocks received signal, was actually a stop signal. Upon releasing the brakes, the aircraft rolled back about 15 ft. I stopped the aircraft and retaxied forward, shutdown. Contributing extreme exhaustion. Everyday on the 5-DAY trip was 13 hours, minimum rest (9 hours). We had mechanical problems, delays, bad WX everyday. Bad trip. Corrective actions in this case will be my never releasing the parking brake and/or paying closer attention.

Original NASA ASRS Text

Title: FLC ALLOWS ACFT TO ROLL BACK AFTER PARKING.

Narrative: I PULLED INTO OUR GATE, AFTER A 5-DAY EXHAUSTING TRIP. WHAT I THOUGHT WAS A CHOCKS RECEIVED SIGNAL, WAS ACTUALLY A STOP SIGNAL. UPON RELEASING THE BRAKES, THE ACFT ROLLED BACK ABOUT 15 FT. I STOPPED THE ACFT AND RETAXIED FORWARD, SHUTDOWN. CONTRIBUTING EXTREME EXHAUSTION. EVERYDAY ON THE 5-DAY TRIP WAS 13 HRS, MINIMUM REST (9 HRS). WE HAD MECHANICAL PROBS, DELAYS, BAD WX EVERYDAY. BAD TRIP. CORRECTIVE ACTIONS IN THIS CASE WILL BE MY NEVER RELEASING THE PARKING BRAKE AND/OR PAYING CLOSER ATTN.

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.