Potential conflict sensed by TCASII RA and flight crew response is to take evasive action climb.

Attributes
ACN	220645
Time
Date	199209
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : tpa
State Reference	FL
Altitude	msl bound lower : 27000 msl bound upper : 27600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zma
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	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	climbout : intermediate altitude cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 12500 flight time type : 1600
ASRS Report	220645
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 90 flight time total : 7000 flight time type : 300
ASRS Report	220309
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 flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 900
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cruising along at FL270 and received an RA on the TCASII system -- somebody just behind and climbing -- until it got to -800 within my altitude we climbed. We got to about 27600 before I figured out that the target had leveled off 1000 ft below us. ATC did not warn us because that traffic was cleared to that altitude by another controller and neither I nor he were aware of the situation. No conflict occurred because of my compliance with the RA. The controller should have been warned, it's also too important for me to listen to other clrncs to expect these situations. Supplemental information from acn 220309: operating from clt-rsw under control of mia center (frequency 127.6) sbound on J75 vicinity of tampa, PF observed another aircraft on TCASII climbing out at a lower altitude in front of our aircraft. Climbing aircraft was on a reciprocal course and appeared to be climbing rapidly.

Original NASA ASRS Text

Title: POTENTIAL CONFLICT SENSED BY TCASII RA AND FLC RESPONSE IS TO TAKE EVASIVE ACTION CLB.

Narrative: CRUISING ALONG AT FL270 AND RECEIVED AN RA ON THE TCASII SYS -- SOMEBODY JUST BEHIND AND CLBING -- UNTIL IT GOT TO -800 WITHIN MY ALT WE CLBED. WE GOT TO ABOUT 27600 BEFORE I FIGURED OUT THAT THE TARGET HAD LEVELED OFF 1000 FT BELOW US. ATC DID NOT WARN US BECAUSE THAT TFC WAS CLRED TO THAT ALT BY ANOTHER CTLR AND NEITHER I NOR HE WERE AWARE OF THE SITUATION. NO CONFLICT OCCURRED BECAUSE OF MY COMPLIANCE WITH THE RA. THE CTLR SHOULD HAVE BEEN WARNED, IT'S ALSO TOO IMPORTANT FOR ME TO LISTEN TO OTHER CLRNCS TO EXPECT THESE SITUATIONS. SUPPLEMENTAL INFO FROM ACN 220309: OPERATING FROM CLT-RSW UNDER CTL OF MIA CTR (FREQ 127.6) SBOUND ON J75 VICINITY OF TAMPA, PF OBSERVED ANOTHER ACFT ON TCASII CLBING OUT AT A LOWER ALT IN FRONT OF OUR ACFT. CLBING ACFT WAS ON A RECIPROCAL COURSE AND APPEARED TO BE CLBING RAPIDLY.

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.