Flight crew of air carrier medium large transport aircraft deviated from assigned altitude in response to a TCASII RA due to 2 military fgt aircraft straying out of nearby military MOA airspace.

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Attributes
ACN	227226
Time
Date	199211
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : tay
State Reference	FL
Altitude	msl bound lower : 27400 msl bound upper : 28000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zjx
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Fighter
Navigation In Use	Other Other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 300 flight time total : 11000 flight time type : 300
ASRS Report	227226
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : instrument pilot : atp pilot : cfi pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 4000
ASRS Report	227403
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe other anomaly other other anomaly other
Miss Distance	horizontal : 12000 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The first thing we heard was 'traffic, traffic' on TCASII. Then traffic was called out by ATC to be at 12 O'clock and FL270. I asked ATC controller to confirm their altitude as our TCASII showed the traffic to be 400-500 ft below our altitude and climbing! As well as coming towards us. Simultaneously, ATC tried to make radio contact with the (fgt aircraft), 2 ship while our TCASII issued an RA to 'descend, descend.' then it commanded monitor descent. I spotted the 2 ship at 11:30 position and told the copilot, who was now hand-flying to turn right. Simultaneously, the 2 ship appeared to be turning to their right as well (our left). They appeared to level off whereupon our TCASII issued a command to climb while we were at 27400 ft and passing abeam the 2 ship, 2-4 mi away. We climbed back to FL280 without further incident. (Clear of conflict). The ATC controller said he didn't know what they were doing there. I suppose that meant that they were off track, out of their area, and at the wrong altitude.

Original NASA ASRS Text

Title: FLC OF ACR MLG ACFT DEVIATED FROM ASSIGNED ALT IN RESPONSE TO A TCASII RA DUE TO 2 MIL FGT ACFT STRAYING OUT OF NEARBY MIL MOA AIRSPACE.

Narrative: THE FIRST THING WE HEARD WAS 'TFC, TFC' ON TCASII. THEN TFC WAS CALLED OUT BY ATC TO BE AT 12 O'CLOCK AND FL270. I ASKED ATC CTLR TO CONFIRM THEIR ALT AS OUR TCASII SHOWED THE TFC TO BE 400-500 FT BELOW OUR ALT AND CLBING! AS WELL AS COMING TOWARDS US. SIMULTANEOUSLY, ATC TRIED TO MAKE RADIO CONTACT WITH THE (FGT ACFT), 2 SHIP WHILE OUR TCASII ISSUED AN RA TO 'DSND, DSND.' THEN IT COMMANDED MONITOR DSCNT. I SPOTTED THE 2 SHIP AT 11:30 POS AND TOLD THE COPLT, WHO WAS NOW HAND-FLYING TO TURN R. SIMULTANEOUSLY, THE 2 SHIP APPEARED TO BE TURNING TO THEIR R AS WELL (OUR L). THEY APPEARED TO LEVEL OFF WHEREUPON OUR TCASII ISSUED A COMMAND TO CLB WHILE WE WERE AT 27400 FT AND PASSING ABEAM THE 2 SHIP, 2-4 MI AWAY. WE CLBED BACK TO FL280 WITHOUT FURTHER INCIDENT. (CLR OF CONFLICT). THE ATC CTLR SAID HE DIDN'T KNOW WHAT THEY WERE DOING THERE. I SUPPOSE THAT MEANT THAT THEY WERE OFF TRACK, OUT OF THEIR AREA, AND AT THE WRONG ALT.

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.