Large transport is flown with the TCASII turned off.

Attributes
ACN	175066
Time
Date	199104
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : okc
State Reference	OK
Altitude	msl bound lower : 24000 msl bound upper : 24000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw tower : tmb
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 35 flight time total : 12000
ASRS Report	175066
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence other
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 with operating TCAS was flown from dfw to okc with TCAS off. Both pilots must be qualified to operate TCAS. Because of last minute crew shuffle, I believed copilot was not qualified and he believed I wasn't. FAA air safety inspector asked if TCAS was operational during flight. There will be some operational exceptions during TCAS break-in period.

Original NASA ASRS Text

Title: LGT IS FLOWN WITH THE TCASII TURNED OFF.

Narrative: ACFT WITH OPERATING TCAS WAS FLOWN FROM DFW TO OKC WITH TCAS OFF. BOTH PLTS MUST BE QUALIFIED TO OPERATE TCAS. BECAUSE OF LAST MINUTE CREW SHUFFLE, I BELIEVED COPLT WAS NOT QUALIFIED AND HE BELIEVED I WASN'T. FAA AIR SAFETY INSPECTOR ASKED IF TCAS WAS OPERATIONAL DURING FLT. THERE WILL BE SOME OPERATIONAL EXCEPTIONS DURING TCAS BREAK-IN PERIOD.

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.