Fgt uncoordinated unauthorized penetration of airspace had less than standard separation from air carrier X. System err. Air carrier X TCASII RA climb evasive action taken from military fgt.

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Attributes
ACN	207482
Time
Date	199204
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bdf
State Reference	IL
Altitude	msl bound lower : 27000 msl bound upper : 28300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute : direct enroute airway : zkc
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Fighter
Flight Phase	climbout : intermediate altitude
Route In Use	approach : visual
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 180 flight time total : 2200 flight time type : 700
ASRS Report	207482
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew faa : investigated
Miss Distance	horizontal : 4000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X at level cruise at FL270 our TCASII issued an RA to climb, commanding approximately 2000-2500 FPM rate of climb. We started our climb and the TCASII commanded an increased climb rate of approximately 3500-4000 FPM. We continued to climb and at 28300 ft the TCASII was silenced. When the TCASII commands had stopped we saw 2 fgt's in a sharp left bank off the right side of our aircraft. The estimated distance between our aircraft and the fgt's was 1/2 - 1 mi horizontal. After a brief discussion with ATC, we found that ATC had cleared us through a hot MOA. Due to a miscom between ARTCC and the military facility, there was confusion as to the maximum altitude of the MOA. Apparently center thought the top was at FL260 and the military facility thought they were cleared to FL280. The major cause of the conflict was the poor communication between center and the military facility.

Original NASA ASRS Text

Title: FGT UNCOORDINATED UNAUTHORIZED PENETRATION OF AIRSPACE HAD LTSS FROM ACR X. SYS ERR. ACR X TCASII RA CLB EVASIVE ACTION TAKEN FROM MIL FGT.

Narrative: ACR X AT LEVEL CRUISE AT FL270 OUR TCASII ISSUED AN RA TO CLB, COMMANDING APPROX 2000-2500 FPM RATE OF CLB. WE STARTED OUR CLB AND THE TCASII COMMANDED AN INCREASED CLB RATE OF APPROX 3500-4000 FPM. WE CONTINUED TO CLB AND AT 28300 FT THE TCASII WAS SILENCED. WHEN THE TCASII COMMANDS HAD STOPPED WE SAW 2 FGT'S IN A SHARP L BANK OFF THE R SIDE OF OUR ACFT. THE ESTIMATED DISTANCE BTWN OUR ACFT AND THE FGT'S WAS 1/2 - 1 MI HORIZ. AFTER A BRIEF DISCUSSION WITH ATC, WE FOUND THAT ATC HAD CLRED US THROUGH A HOT MOA. DUE TO A MISCOM BTWN ARTCC AND THE MIL FACILITY, THERE WAS CONFUSION AS TO THE MAX ALT OF THE MOA. APPARENTLY CTR THOUGHT THE TOP WAS AT FL260 AND THE MIL FACILITY THOUGHT THEY WERE CLRED TO FL280. THE MAJOR CAUSE OF THE CONFLICT WAS THE POOR COM BTWN CTR AND THE MIL FACILITY.

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.