Large transport receives TCASII RA. complies

Attributes
ACN	208612
Time
Date	199204
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 11000 msl bound upper : 11500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other descent other
Route In Use	arrival other enroute airway : dfw
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 210 flight time total : 4000 flight time type : 2000
ASRS Report	208612
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

Due to TCASII RA on smaller aircraft at 12 O'clock, we ascended 500 ft above assigned altitude of 11000 ft. After conflict was over, we returned to assigned altitude. We then notified ATC of deviation and reason. No apparent loss of ATC separation! (ATC did note other aircraft was at 10500 ft taking pictures.)

Original NASA ASRS Text

Title: LGT RECEIVES TCASII RA. COMPLIES

Narrative: DUE TO TCASII RA ON SMALLER ACFT AT 12 O'CLOCK, WE ASCENDED 500 FT ABOVE ASSIGNED ALT OF 11000 FT. AFTER CONFLICT WAS OVER, WE RETURNED TO ASSIGNED ALT. WE THEN NOTIFIED ATC OF DEV AND REASON. NO APPARENT LOSS OF ATC SEPARATION! (ATC DID NOTE OTHER ACFT WAS AT 10500 FT TAKING PICTURES.)

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.