An air carrier widebody transport climbed in response to a TCASII command.

Attributes
ACN	258065
Time
Date	199312
Day	Thu
Place
Locale Reference	atc facility : acz
State Reference	NC
Altitude	msl bound lower : 24000 msl bound upper : 25200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Fighter
Operating Under FAR Part	other : other
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
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 : 208 flight time total : 10000
ASRS Report	258065
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 other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Descending, then leveling at FL240. The ZDC controller advised we had ftr traffic 11 NM at 12 O'clock, climbing to FL230, opposite direction. First received a TA from TCASII followed by an RA 'climb.' at 25200 ft, RA gave maintain level flight. We informed controller we followed the TCASII commands, descended back to FL240. The fast closure rate appears to have activated TCASII RA. We never saw traffic.

Original NASA ASRS Text

Title: AN ACR WDB CLBED IN RESPONSE TO A TCASII COMMAND.

Narrative: DSNDING, THEN LEVELING AT FL240. THE ZDC CTLR ADVISED WE HAD FTR TFC 11 NM AT 12 O'CLOCK, CLBING TO FL230, OPPOSITE DIRECTION. FIRST RECEIVED A TA FROM TCASII FOLLOWED BY AN RA 'CLB.' AT 25200 FT, RA GAVE MAINTAIN LEVEL FLT. WE INFORMED CTLR WE FOLLOWED THE TCASII COMMANDS, DSNDED BACK TO FL240. THE FAST CLOSURE RATE APPEARS TO HAVE ACTIVATED TCASII RA. WE NEVER SAW TFC.

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.