Aircraft flight above 10,000' without transponder and mode C. Pilot deviation.

Attributes
ACN	118565
Time
Date	198908
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : djb
State Reference	OH
Altitude	msl bound lower : 13000 msl bound upper : 14000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob tracon : dfw
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent other
Route In Use	enroute : direct enroute airway : zob
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	cruise other
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	118565
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 6000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cpr X, an light transport, was descending into cle on V14 when he asked me if I saw traffic for him moving west to east. At first I didn't see him, then as the data block moved on, I saw a primary target and I told cpr X about it. Cpr X explained that he believed it was a fixed winged small aircraft that passed close by and surprised him. When I asked the pilot what altitude the VFR aircraft was at, he estimated between 13,000 and 14,000'. The pilot then asked that we track the aircraft and send him a letter because he was flying above 10,000' without transponder or mode C. As far as I know, no evasive actions were needed, however, I feel that it was a dangerous situation. At the time, the cle clearance delivery was down.

Original NASA ASRS Text

Title: ACFT FLT ABOVE 10,000' WITHOUT TRANSPONDER AND MODE C. PLT DEVIATION.

Narrative: CPR X, AN LTT, WAS DESCENDING INTO CLE ON V14 WHEN HE ASKED ME IF I SAW TFC FOR HIM MOVING W TO E. AT FIRST I DIDN'T SEE HIM, THEN AS THE DATA BLOCK MOVED ON, I SAW A PRIMARY TARGET AND I TOLD CPR X ABOUT IT. CPR X EXPLAINED THAT HE BELIEVED IT WAS A FIXED WINGED SMA THAT PASSED CLOSE BY AND SURPRISED HIM. WHEN I ASKED THE PLT WHAT ALT THE VFR ACFT WAS AT, HE ESTIMATED BETWEEN 13,000 AND 14,000'. THE PLT THEN ASKED THAT WE TRACK THE ACFT AND SEND HIM A LETTER BECAUSE HE WAS FLYING ABOVE 10,000' WITHOUT XPONDER OR MODE C. AS FAR AS I KNOW, NO EVASIVE ACTIONS WERE NEEDED, HOWEVER, I FEEL THAT IT WAS A DANGEROUS SITUATION. AT THE TIME, THE CLE CD WAS DOWN.

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.