Narrative:

Cruise between N87 and N67 at 2500 ft MSL. Thought I had adequate distance from willow grove NAS to be out of their airspace. Received call from NAS tower upon landing and discussed the 'incursion?' there was a P3 orion on approach to NAS off to my left approximately 10 mi which I had in sight. He was descending with gear down and was well below my position. There was never any possibility of a near miss or collision, however it may have prompted an alert on the radar screen.

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Original NASA ASRS Text

Title: PVT PLT OF A COMPLEX SMA SEL PENETRATED CLASS D AIRSPACE DURING A SHORT XCOUNTRY FLT. UPON LNDG ATC REQUESTED HE CALL THE TWR.

Narrative: CRUISE BTWN N87 AND N67 AT 2500 FT MSL. THOUGHT I HAD ADEQUATE DISTANCE FROM WILLOW GROVE NAS TO BE OUT OF THEIR AIRSPACE. RECEIVED CALL FROM NAS TWR UPON LNDG AND DISCUSSED THE 'INCURSION?' THERE WAS A P3 ORION ON APCH TO NAS OFF TO MY L APPROX 10 MI WHICH I HAD IN SIGHT. HE WAS DSNDING WITH GEAR DOWN AND WAS WELL BELOW MY POS. THERE WAS NEVER ANY POSSIBILITY OF A NEAR MISS OR COLLISION, HOWEVER IT MAY HAVE PROMPTED AN ALERT ON THE RADAR SCREEN.

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.