A VFR small transport had less than standard separation with an IFR mdt in VMC.

Attributes
ACN	251974
Time
Date	199309
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : acy
State Reference	NJ
Altitude	msl bound lower : 9000 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Small Transport
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	enroute airway : zdc
Flight Plan	None
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : private pilot : instrument
Experience	flight time last 90 days : 50 flight time total : 2200 flight time type : 800
ASRS Report	251974
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : far other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 2000 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During a maximum performance climb, left engine temperature increased to an uncomfortable (not dangerous) level. I leveled at 9000 ft for approximately 2 mins. An air carrier mdt passed in front of me nebound. Neither of us diverted. After the air carrier passed I continued to climb. Upon getting within 15 mi of acy, I checked in with acy approach. The controller asked me if I was at 9000 ft and informed me ZNY had inquired. At this time I do not know if the center or air carrier may have reported a possible altitude violation.

Original NASA ASRS Text

Title: A VFR SMT HAD LTSS WITH AN IFR MDT IN VMC.

Narrative: DURING A MAX PERFORMANCE CLB, L ENG TEMP INCREASED TO AN UNCOMFORTABLE (NOT DANGEROUS) LEVEL. I LEVELED AT 9000 FT FOR APPROX 2 MINS. AN ACR MDT PASSED IN FRONT OF ME NEBOUND. NEITHER OF US DIVERTED. AFTER THE ACR PASSED I CONTINUED TO CLB. UPON GETTING WITHIN 15 MI OF ACY, I CHKED IN WITH ACY APCH. THE CTLR ASKED ME IF I WAS AT 9000 FT AND INFORMED ME ZNY HAD INQUIRED. AT THIS TIME I DO NOT KNOW IF THE CTR OR ACR MAY HAVE RPTED A POSSIBLE ALT VIOLATION.

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.