GLF4 taxies out with aft equipment door open.

Attributes
ACN	706315
Time
Date	200608
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mco.airport
State Reference	FL
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Gulfstream IV
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 13800 flight time type : 750
ASRS Report	706315
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : cas other other : 3 veh. drvr.
Resolutory Action	flight crew : overcame equipment problem
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance

Narrative:

During the 'taxi checklist' the PF noticed the 'external doors' cas and stopped the aircraft. The stop point was next to the access road where an unidented ground vehicle called ground to advise of the open door. The PF advised the passenger and exited the aircraft to secure the door while I coordinated with ground control. Door was secured without incident and flight proceeded. Contributing factors: 1) crew change. I was swapping with another pilot on a quick turn and was doing the crew handoff briefing when the passenger showed up. 2) not doing my 'personal' walkaround. I relied on the PF PIC's (not a part of the crew swap) word on the walkaround. Due to the passenger arrival I wasn't able to do the walkaround. 3) non-standard procedures. The PF left the aft equipment door open for cooling. This is not a normal procedure. My thanks go out to the observant ground vehicle. He used clear phraseology including our n-number and the exact nature of concern. Had our cas not worked this information would have been crucial in preventing an incident.

Original NASA ASRS Text

Title: GLF4 TAXIES OUT WITH AFT EQUIP DOOR OPEN.

Narrative: DURING THE 'TAXI CHKLIST' THE PF NOTICED THE 'EXTERNAL DOORS' CAS AND STOPPED THE ACFT. THE STOP POINT WAS NEXT TO THE ACCESS ROAD WHERE AN UNIDENTED GND VEHICLE CALLED GND TO ADVISE OF THE OPEN DOOR. THE PF ADVISED THE PAX AND EXITED THE ACFT TO SECURE THE DOOR WHILE I COORDINATED WITH GND CTL. DOOR WAS SECURED WITHOUT INCIDENT AND FLT PROCEEDED. CONTRIBUTING FACTORS: 1) CREW CHANGE. I WAS SWAPPING WITH ANOTHER PLT ON A QUICK TURN AND WAS DOING THE CREW HDOF BRIEFING WHEN THE PAX SHOWED UP. 2) NOT DOING MY 'PERSONAL' WALKAROUND. I RELIED ON THE PF PIC'S (NOT A PART OF THE CREW SWAP) WORD ON THE WALKAROUND. DUE TO THE PAX ARR I WASN'T ABLE TO DO THE WALKAROUND. 3) NON-STANDARD PROCS. THE PF LEFT THE AFT EQUIP DOOR OPEN FOR COOLING. THIS IS NOT A NORMAL PROC. MY THANKS GO OUT TO THE OBSERVANT GND VEHICLE. HE USED CLR PHRASEOLOGY INCLUDING OUR N-NUMBER AND THE EXACT NATURE OF CONCERN. HAD OUR CAS NOT WORKED THIS INFO WOULD HAVE BEEN CRUCIAL IN PREVENTING AN INCIDENT.

Data retrieved from NASA's ASRS site as of January 2009 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.