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

Attributes
ACN	249018
Time
Date	199308
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sjc
State Reference	CA
Altitude	msl bound lower : 10000 msl bound upper : 10600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sjc
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 11000 flight time type : 940
ASRS Report	249018
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 180 flight time total : 12000 flight time type : 290
ASRS Report	248899
Events
Anomaly	non adherence : required legal separation 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 : 3000 vertical : 800
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Received a VFR TA from bay approach control. Received a TA from TCASII, then increased to RA 'climb, climb.' air carrier procedures are to comply with RA commands, which we did. Climbed to 10600 ft till TCASII said 'clear of traffic' then returned to 10000 ft. First officer on flight told bay approach we are climbing due to RA. Never did see traffic. Landed normally.

Original NASA ASRS Text

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

Narrative: RECEIVED A VFR TA FROM BAY APCH CTL. RECEIVED A TA FROM TCASII, THEN INCREASED TO RA 'CLB, CLB.' ACR PROCS ARE TO COMPLY WITH RA COMMANDS, WHICH WE DID. CLBED TO 10600 FT TILL TCASII SAID 'CLR OF TFC' THEN RETURNED TO 10000 FT. FO ON FLT TOLD BAY APCH WE ARE CLBING DUE TO RA. NEVER DID SEE TFC. LANDED NORMALLY.

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.