Altitude deviation altitude excursion in flight crew response to TCASII RA.

Attributes
ACN	241205
Time
Date	199305
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dtw
State Reference	MI
Altitude	msl bound lower : 12000 msl bound upper : 12500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dtw
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 210 flight time total : 17000
ASRS Report	241205
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 206 flight time total : 14230 flight time type : 1163
ASRS Report	241387
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
Miss Distance	vertical : 1000
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

We executed a climb in response to a TCASII RA commanding 'climb, climb now.' we climbed from 12000 ft our assigned altitude to 12500 ft before returning to 12000 ft after receiving 'clear of conflict' from TCASII. ATC was advised of our climb. The conflicting aircraft was climbing toward us from our 10:30 O'clock position. We were on a 180 degree heading being vectored for a visual approach to runway 3L at dtw. Conflicting aircraft was never sighted.

Original NASA ASRS Text

Title: ALTDEV ALT EXCURSION IN FLC RESPONSE TO TCASII RA.

Narrative: WE EXECUTED A CLB IN RESPONSE TO A TCASII RA COMMANDING 'CLB, CLB NOW.' WE CLBED FROM 12000 FT OUR ASSIGNED ALT TO 12500 FT BEFORE RETURNING TO 12000 FT AFTER RECEIVING 'CLR OF CONFLICT' FROM TCASII. ATC WAS ADVISED OF OUR CLB. THE CONFLICTING ACFT WAS CLBING TOWARD US FROM OUR 10:30 O'CLOCK POS. WE WERE ON A 180 DEG HDG BEING VECTORED FOR A VISUAL APCH TO RWY 3L AT DTW. CONFLICTING ACFT WAS NEVER SIGHTED.

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.