An IFR small aircraft has an near midair collision with a VFR high wing cessna. Traffic not issued b...

Attributes
ACN	320324
Time
Date	199511
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lhy
State Reference	PA
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : avp
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	descent other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 45 flight time total : 2490 flight time type : 2100
ASRS Report	320324
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 500 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Approaching VOR on off-airway IFR clearance in VMC, I looked down to set outbound radial, looked up to see a high-wing single large aircraft in windshield, slightly above me and crossing right to left in a descent. I abruptly pushed yoke forward, as other aircraft continued descent to 4500 ft! I had received no TA from ATC. After leveling off from approximately 100 ft descent, I called ATC and asked if they had me on radar. They answered affirmative. I informed them that I had experienced an near midair collision, they then reported VFR traffic at 1-2 mi and 4500 ft! When I informed ATC of details they indicated they were using a secondary radar which 'wasn't too good.' 28 mi further west, they advised me 'radar contact lost.' after landing, telephone conversation with ATC indicated they had been experiencing radar outages. I passed this information on to FSDO. Controller contacted stated he idented other aircraft and talked to pilot.

Original NASA ASRS Text

Title: AN IFR SMA HAS AN NMAC WITH A VFR HIGH WING CESSNA. TFC NOT ISSUED BY ATC.

Narrative: APCHING VOR ON OFF-AIRWAY IFR CLRNC IN VMC, I LOOKED DOWN TO SET OUTBOUND RADIAL, LOOKED UP TO SEE A HIGH-WING SINGLE LARGE ACFT IN WINDSHIELD, SLIGHTLY ABOVE ME AND XING R TO L IN A DSCNT. I ABRUPTLY PUSHED YOKE FORWARD, AS OTHER ACFT CONTINUED DSCNT TO 4500 FT! I HAD RECEIVED NO TA FROM ATC. AFTER LEVELING OFF FROM APPROX 100 FT DSCNT, I CALLED ATC AND ASKED IF THEY HAD ME ON RADAR. THEY ANSWERED AFFIRMATIVE. I INFORMED THEM THAT I HAD EXPERIENCED AN NMAC, THEY THEN RPTED VFR TFC AT 1-2 MI AND 4500 FT! WHEN I INFORMED ATC OF DETAILS THEY INDICATED THEY WERE USING A SECONDARY RADAR WHICH 'WASN'T TOO GOOD.' 28 MI FURTHER W, THEY ADVISED ME 'RADAR CONTACT LOST.' AFTER LNDG, TELEPHONE CONVERSATION WITH ATC INDICATED THEY HAD BEEN EXPERIENCING RADAR OUTAGES. I PASSED THIS INFO ON TO FSDO. CTLR CONTACTED STATED HE IDENTED OTHER ACFT AND TALKED TO PLT.

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.

An IFR small aircraft has an near midair collision with a VFR high wing cessna. Traffic not issued by ATC.