Air carrier MD80S flight crew initiates evasive TCASII maneuver to avoid a cessna citation jet, descending opposite direction, apparently not under ATC advisories.

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Attributes
ACN	410697
Time
Date	199808
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : cie
State Reference	AZ
Altitude	msl bound lower : 13000 msl bound upper : 13500
Environment
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : tus
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude climbout : takeoff
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Cessna Citation Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	cruise other descent other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	410697
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac non adherence : required legal separation non adherence : far 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 : 0 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Aircraft #1 had a clearance to climb to 15000 ft from tucson departure. Through 13500 ft TCASII went rapidly from TA to RA with descend to descend now. Started a 2000-3000 FPM descent. At this point, TCASII showed aircraft, later idented as a government cessna citation (aircraft #2) 800 ft above and still descending. I picked up aircraft visually about 1-2 mi, converging. I estimate miss was less than 500 ft. Onboard, in jump seat, was an FAA aviation safety inspector. In my opinion, had we not had the TCASII TA/RA, we would have collided.

Original NASA ASRS Text

Title: ACR MD80S FLC INITIATES EVASIVE TCASII MANEUVER TO AVOID A CESSNA CITATION JET, DSNDING OPPOSITE DIRECTION, APPARENTLY NOT UNDER ATC ADVISORIES.

Narrative: ACFT #1 HAD A CLRNC TO CLB TO 15000 FT FROM TUCSON DEP. THROUGH 13500 FT TCASII WENT RAPIDLY FROM TA TO RA WITH DSND TO DSND NOW. STARTED A 2000-3000 FPM DSCNT. AT THIS POINT, TCASII SHOWED ACFT, LATER IDENTED AS A GOV CESSNA CITATION (ACFT #2) 800 FT ABOVE AND STILL DSNDING. I PICKED UP ACFT VISUALLY ABOUT 1-2 MI, CONVERGING. I ESTIMATE MISS WAS LESS THAN 500 FT. ONBOARD, IN JUMP SEAT, WAS AN FAA AVIATION SAFETY INSPECTOR. IN MY OPINION, HAD WE NOT HAD THE TCASII TA/RA, WE WOULD HAVE COLLIDED.

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.