Large transport and spc have near midair collision.

Attributes
ACN	86669
Time
Date	198805
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : atr
State Reference	DE
Altitude	msl bound lower : 15000 msl bound upper : 16000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Route In Use	enroute airway : v308
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Experimental
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 180 flight time total : 15000 flight time type : 11000
ASRS Report	86669
Person 2
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 0 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

We were wbound on V308, 15 DME west of ATR descending, approximately 16000-15500'. Copilot flying yelled out and pointed to a spc in right turn bearing down on us. Spc passed overhead. All 3 pilots heard the engines as it passed overhead approximately 300' above us. Asked ATC about spc and they said to the effect a VFR target just popped up on the screen. We recall that controller insinuated that the spc had no transponder. I think anyone above 10000' west/O a transponder is an idiot asking for trouble. I would like to relay that message to the navy personally. ATC near miss reported.

Original NASA ASRS Text

Title: LGT AND SPC HAVE NMAC.

Narrative: WE WERE WBOUND ON V308, 15 DME W OF ATR DSNDING, APPROX 16000-15500'. COPLT FLYING YELLED OUT AND POINTED TO A SPC IN RIGHT TURN BEARING DOWN ON US. SPC PASSED OVERHEAD. ALL 3 PLTS HEARD THE ENGS AS IT PASSED OVERHEAD APPROX 300' ABOVE US. ASKED ATC ABOUT SPC AND THEY SAID TO THE EFFECT A VFR TARGET JUST POPPED UP ON THE SCREEN. WE RECALL THAT CTLR INSINUATED THAT THE SPC HAD NO TRANSPONDER. I THINK ANYONE ABOVE 10000' W/O A TRANSPONDER IS AN IDIOT ASKING FOR TROUBLE. I WOULD LIKE TO RELAY THAT MESSAGE TO THE NAVY PERSONALLY. ATC NEAR MISS RPTED.

Data retrieved from NASA's ASRS site as of August 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.