GPWS deactivated on ground by captain. Did not enter in maintenance log.

Attributes
ACN	108404
Time
Date	198904
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dfw
Operator	common carrier : air carrier
Make Model Name	Medium Transport, Low Wing, 2 Turboprop Eng
Flight Phase	ground : parked ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 210 flight time total : 3900 flight time type : 210
ASRS Report	108404
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Aircraft was parked on the ramp at a complete stop with the parking brake set and both engines not turning or running. The flight just terminated was an far 121 scheduled air carrier passenger flight with an FAA aci aboard riding jump seat. Due to spurious activations of the GPWS on the ground I inhibited the GPWS forgetting far 121.360. This action was not intentional with respect to disregard of far 121.360 and realization of such was not made until much later and too late. Thus no entry was made in airplane maintenance record. Inhibiting the GPWS was in no way a willful or intentional act of misconduct. In reflecting upon this situation and considering the factors relating to human performance I do not believe this occurrence has any bearing upon, nor of such consequence that a serious degradation of my performance or safety was involved.

Original NASA ASRS Text

Title: GPWS DEACTIVATED ON GND BY CAPT. DID NOT ENTER IN MAINTENANCE LOG.

Narrative: ACFT WAS PARKED ON THE RAMP AT A COMPLETE STOP WITH THE PARKING BRAKE SET AND BOTH ENGS NOT TURNING OR RUNNING. THE FLT JUST TERMINATED WAS AN FAR 121 SCHEDULED ACR PAX FLT WITH AN FAA ACI ABOARD RIDING JUMP SEAT. DUE TO SPURIOUS ACTIVATIONS OF THE GPWS ON THE GND I INHIBITED THE GPWS FORGETTING FAR 121.360. THIS ACTION WAS NOT INTENTIONAL WITH RESPECT TO DISREGARD OF FAR 121.360 AND REALIZATION OF SUCH WAS NOT MADE UNTIL MUCH LATER AND TOO LATE. THUS NO ENTRY WAS MADE IN AIRPLANE MAINT RECORD. INHIBITING THE GPWS WAS IN NO WAY A WILLFUL OR INTENTIONAL ACT OF MISCONDUCT. IN REFLECTING UPON THIS SITUATION AND CONSIDERING THE FACTORS RELATING TO HUMAN PERFORMANCE I DO NOT BELIEVE THIS OCCURRENCE HAS ANY BEARING UPON, NOR OF SUCH CONSEQUENCE THAT A SERIOUS DEGRADATION OF MY PERFORMANCE OR SAFETY WAS INVOLVED.

Data retrieved from NASA's ASRS site as of August 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.