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

Attributes
ACN	253552
Time
Date	199309
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mco
State Reference	FL
Altitude	msl bound lower : 3000 msl bound upper : 4300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mco
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other descent : approach
Route In Use	approach : straight in enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 300 flight time total : 12500
ASRS Report	253552
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
ASRS Report	253551
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	controller : issued new clearance flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On approach into mco, landing on runway 17, our aircraft was given a heading to intercept localizer on and instructed to contact tower. At that time, we received a TA on TCASII. Followed by an RA to 'climb.' approach control was queried regarding traffic. In response to TCASII alert, we maintained heading and climbed. The first officer visually idented traffic, air carrier large transport, lined up with adjacent runway 18R. Approach control instructed our aircraft to turn left. Head east until we were able to descend from 4300 ft in order to make a normal approach and landing from that point. ATIS advised of lndgs on both runways, but approach had not previously pointed out parallel traffic.

Original NASA ASRS Text

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

Narrative: ON APCH INTO MCO, LNDG ON RWY 17, OUR ACFT WAS GIVEN A HDG TO INTERCEPT LOC ON AND INSTRUCTED TO CONTACT TWR. AT THAT TIME, WE RECEIVED A TA ON TCASII. FOLLOWED BY AN RA TO 'CLB.' APCH CTL WAS QUERIED REGARDING TFC. IN RESPONSE TO TCASII ALERT, WE MAINTAINED HDG AND CLBED. THE FO VISUALLY IDENTED TFC, ACR LGT, LINED UP WITH ADJACENT RWY 18R. APCH CTL INSTRUCTED OUR ACFT TO TURN L. HEAD E UNTIL WE WERE ABLE TO DSND FROM 4300 FT IN ORDER TO MAKE A NORMAL APCH AND LNDG FROM THAT POINT. ATIS ADVISED OF LNDGS ON BOTH RWYS, BUT APCH HAD NOT PREVIOUSLY POINTED OUT PARALLEL 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.