Air carrier medium large transport altitude deviation in response to TCASII RA.

Attributes
ACN	197065
Time
Date	199112
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bpr airport : dfw
State Reference	TX
Altitude	msl bound lower : 11000 msl bound upper : 11400
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 125 flight time total : 15000
ASRS Report	197065
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	vertical : 1400
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

We were level at 11000. A departing aircraft was climbing to 10000. When other aircraft (departing aircraft) was at 9000 we had a TCASII TA. Shortly thereafter we had a TCASII RA to climb 3000 FPM. We followed the RA and climbed to about 11400. Other (departing) aircraft leveled at 10000. Rules and regulations required us to follow the RA unless an emergency would be the result. This was an unnecessary. TA/RA and climb we left our altitude unnecessarily. Some day these erroneous TCASII maneuvers will cause an accident between 2 aircraft.

Original NASA ASRS Text

Title: ACR MLG ALTDEV IN RESPONSE TO TCASII RA.

Narrative: WE WERE LEVEL AT 11000. A DEPARTING ACFT WAS CLBING TO 10000. WHEN OTHER ACFT (DEPARTING ACFT) WAS AT 9000 WE HAD A TCASII TA. SHORTLY THEREAFTER WE HAD A TCASII RA TO CLB 3000 FPM. WE FOLLOWED THE RA AND CLBED TO ABOUT 11400. OTHER (DEPARTING) ACFT LEVELED AT 10000. RULES AND REGS REQUIRED US TO FOLLOW THE RA UNLESS AN EMER WOULD BE THE RESULT. THIS WAS AN UNNECESSARY. TA/RA AND CLB WE LEFT OUR ALT UNNECESSARILY. SOME DAY THESE ERRONEOUS TCASII MANEUVERS WILL CAUSE AN ACCIDENT BTWN 2 ACFT.

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.