Near midair collision between a C182 climbing out from an uncontrolled airport and a military P-3 in the traffic pattern of a nearby military base. The P3 took evasive action and turned away from the cessna.

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Attributes
ACN	545267
Time
Date	200204
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : n67.airport
State Reference	PA
Altitude	agl bound lower : 2700 agl bound upper : 3500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	military facility : nxx.milfac tower : zzz.tower
Operator	general aviation : instructional
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Flight Plan	None
Aircraft 2
Controlling Facilities	tower : nxx.tower
Operator	other
Make Model Name	Orion (P3)
Operating Under FAR Part	Part 91
Route In Use	approach : traffic pattern
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : student
Experience	flight time last 90 days : 40 flight time total : 70 flight time type : 70
ASRS Report	545267
Person 2
Affiliation	government : military
Function	flight crew : captain oversight : pic
Events
Anomaly	airspace violation : entry conflict : nmac
Independent Detector	atc equipment other atc equipment : radar other controllera other flight crewa other flight crewb
Resolutory Action	controller : issued advisory flight crew : exited penetrated airspace flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 300 vertical : 400
Supplementary
Problem Areas	Flight Crew Human Performance Airspace Structure
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During a solo cross country flight which included N07-ava-N67-N07 and departing from runway 6 at N67 and while climbing through 2700 ft AGL en route to 3500 ft, the heading placed my aircraft in close proximity to willow grove airport. I was about 3 mi and when I switched to their ATC frequency to request and advise transition, controller advised me of conflicting aircraft traffic. I observed a P3 military plane who was conducting pattern work at 2400 ft AGL. The plane (P3) diverted to the right without incident. Controller informed me that I was on the edge of class D airspace and that I should have communicated earlier. I contacted the ATC controller within 45 seconds and 1 min after takeoff and explained this to ATC. I do not think that my aircraft entered class D airspace, but I offered my apologies to both ATC and crew of the P3 and safely continued the flight without further incident.

Original NASA ASRS Text

Title: NMAC BTWN A C182 CLBING OUT FROM AN UNCTLED ARPT AND A MIL P-3 IN THE TFC PATTERN OF A NEARBY MIL BASE. THE P3 TOOK EVASIVE ACTION AND TURNED AWAY FROM THE CESSNA.

Narrative: DURING A SOLO XCOUNTRY FLT WHICH INCLUDED N07-AVA-N67-N07 AND DEPARTING FROM RWY 6 AT N67 AND WHILE CLBING THROUGH 2700 FT AGL ENRTE TO 3500 FT, THE HDG PLACED MY ACFT IN CLOSE PROX TO WILLOW GROVE ARPT. I WAS ABOUT 3 MI AND WHEN I SWITCHED TO THEIR ATC FREQ TO REQUEST AND ADVISE TRANSITION, CTLR ADVISED ME OF CONFLICTING ACFT TFC. I OBSERVED A P3 MIL PLANE WHO WAS CONDUCTING PATTERN WORK AT 2400 FT AGL. THE PLANE (P3) DIVERTED TO THE R WITHOUT INCIDENT. CTLR INFORMED ME THAT I WAS ON THE EDGE OF CLASS D AIRSPACE AND THAT I SHOULD HAVE COMMUNICATED EARLIER. I CONTACTED THE ATC CTLR WITHIN 45 SECONDS AND 1 MIN AFTER TKOF AND EXPLAINED THIS TO ATC. I DO NOT THINK THAT MY ACFT ENTERED CLASS D AIRSPACE, BUT I OFFERED MY APOLOGIES TO BOTH ATC AND CREW OF THE P3 AND SAFELY CONTINUED THE FLT WITHOUT FURTHER INCIDENT.

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.