Captain of an medium large transport air carrier aircraft failed to release the parking brake for pushback resulting in the tow bar damaging the nose gear spray deflector and lodging under the nosewheel tires.

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Attributes
ACN	265231
Time
Date	199403
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 180 flight time total : 14750 flight time type : 3150
ASRS Report	265231
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On arrival at gate parking brake was left set because ground agent left red stop light on. At pushback brake pedals were pushed but brakes did not release. As tug began to push, tow bar failed and damaged aircraft nose gear spray deflector and then slid under nose gear tires. Parking brake was still set. I have reevaluated my prepush activity to insure that I do not make this mistake again.

Original NASA ASRS Text

Title: CAPT OF AN MLG ACR ACFT FAILED TO RELEASE THE PARKING BRAKE FOR PUSHBACK RESULTING IN THE TOW BAR DAMAGING THE NOSE GEAR SPRAY DEFLECTOR AND LODGING UNDER THE NOSEWHEEL TIRES.

Narrative: ON ARR AT GATE PARKING BRAKE WAS LEFT SET BECAUSE GND AGENT LEFT RED STOP LIGHT ON. AT PUSHBACK BRAKE PEDALS WERE PUSHED BUT BRAKES DID NOT RELEASE. AS TUG BEGAN TO PUSH, TOW BAR FAILED AND DAMAGED ACFT NOSE GEAR SPRAY DEFLECTOR AND THEN SLID UNDER NOSE GEAR TIRES. PARKING BRAKE WAS STILL SET. I HAVE REEVALUATED MY PREPUSH ACTIVITY TO INSURE THAT I DO NOT MAKE THIS MISTAKE AGAIN.

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.