Altitude deviation excursion from assigned altitude during TCASII RA.

Attributes
ACN	204527
Time
Date	199203
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : buj airport : dfw
State Reference	TX
Altitude	msl bound lower : 11000 msl bound upper : 11600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	departure other departure sid : sid enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	arrival other arrival star : star enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 23000 flight time type : 14000
ASRS Report	204527
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 270 flight time total : 12000
ASRS Report	204528
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Flying at 11000 ft on blue ridge 230 degree radial at approximately 30 DME, 230 KTS, dfw approach control said traffic at 1 O'clock low. We looked and could not find him visually. At that time we received a TA on TCASII, followed by an RA. Still could not see him. The first officer was flying. I instructed him to follow the TCASII, which he did. I told the controller we had an RA and were leaving 11000 ft. Did not seem to have any conflict with other traffic. The controller said we climbed to 11600 ft. I thought we went to 11400 ft. Continued the flight with no further problems.

Original NASA ASRS Text

Title: ALTDEV EXCURSION FROM ASSIGNED ALT DURING TCASII RA.

Narrative: FLYING AT 11000 FT ON BLUE RIDGE 230 DEG RADIAL AT APPROX 30 DME, 230 KTS, DFW APCH CTL SAID TFC AT 1 O'CLOCK LOW. WE LOOKED AND COULD NOT FIND HIM VISUALLY. AT THAT TIME WE RECEIVED A TA ON TCASII, FOLLOWED BY AN RA. STILL COULD NOT SEE HIM. THE FO WAS FLYING. I INSTRUCTED HIM TO FOLLOW THE TCASII, WHICH HE DID. I TOLD THE CTLR WE HAD AN RA AND WERE LEAVING 11000 FT. DID NOT SEEM TO HAVE ANY CONFLICT WITH OTHER TFC. THE CTLR SAID WE CLBED TO 11600 FT. I THOUGHT WE WENT TO 11400 FT. CONTINUED THE FLT WITH NO FURTHER PROBLEMS.

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.