Altitude deviation altitude excursion in pilot response to TCASII RA.

Attributes
ACN	208818
Time
Date	199204
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : spa
State Reference	SC
Altitude	msl bound lower : 24000 msl bound upper : 24700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other cruise other
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
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5000
ASRS Report	208818
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : required legal separation 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 other
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 300
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

I was copilot of airline flight dfw-gso. Just after turning to intercept the 041 radial off spa outbound, level at FL240, TCASII commanded 'climb, climb' at 1900 FPM. We began a 1900 FPM climb, at which time TCASII ceased. We peaked at 24700 ft, and started down to FL240. At the onset of our climb, we reported to ZTL immediately of our action. They advised us of traffic at 12 O'clock, 1 mi, FL250. We never saw the initial traffic below us from which TCASII warned us of, nor the traffic reported by center at 12 O'clock.

Original NASA ASRS Text

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

Narrative: I WAS COPLT OF AIRLINE FLT DFW-GSO. JUST AFTER TURNING TO INTERCEPT THE 041 RADIAL OFF SPA OUTBOUND, LEVEL AT FL240, TCASII COMMANDED 'CLB, CLB' AT 1900 FPM. WE BEGAN A 1900 FPM CLB, AT WHICH TIME TCASII CEASED. WE PEAKED AT 24700 FT, AND STARTED DOWN TO FL240. AT THE ONSET OF OUR CLB, WE RPTED TO ZTL IMMEDIATELY OF OUR ACTION. THEY ADVISED US OF TFC AT 12 O'CLOCK, 1 MI, FL250. WE NEVER SAW THE INITIAL TFC BELOW US FROM WHICH TCASII WARNED US OF, NOR THE TFC RPTED BY CTR AT 12 O'CLOCK.

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.