Flight crew of a widebody transport air carrier aircraft refused to execute ATC instructions due to a TCASII RA and resulting in a climb instead of a descent as requested by ATC.

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Attributes
ACN	249795
Time
Date	199308
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lhr
State Reference	FO
Altitude	msl bound lower : 9000 msl bound upper : 11000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lhr
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 300 flight time total : 8000 flight time type : 2000
ASRS Report	249795
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Aircraft cleared to descend to 8000 ft. At this time TCASII gave TA. First officer reported this to controller. Controller instructed aircraft to turn left 080 degrees. This was followed by immediate RA which caused aircraft to climb 2000 ft back up to 11000 ft.

Original NASA ASRS Text

Title: FLC OF A WDB ACR ACFT REFUSED TO EXECUTE ATC INSTRUCTIONS DUE TO A TCASII RA AND RESULTING IN A CLB INSTEAD OF A DSCNT AS REQUESTED BY ATC.

Narrative: ACFT CLRED TO DSND TO 8000 FT. AT THIS TIME TCASII GAVE TA. FO RPTED THIS TO CTLR. CTLR INSTRUCTED ACFT TO TURN L 080 DEGS. THIS WAS FOLLOWED BY IMMEDIATE RA WHICH CAUSED ACFT TO CLB 2000 FT BACK UP TO 11000 FT.

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.