State govt aircraft on photo mission has near midair collision with air carrier.

Attributes
ACN	200864
Time
Date	199202
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mie
State Reference	IN
Altitude	msl bound lower : 13100 msl bound upper : 13100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	other
Make Model Name	Small Transport
Flight Phase	cruise other
Route In Use	enroute airway : zid
Flight Plan	None
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Plan	IFR
Person 1
Affiliation	government other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : cfi pilot : atp pilot : instrument
Experience	flight time last 90 days : 40 flight time total : 4500 flight time type : 300
ASRS Report	200864
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac non adherence : far other anomaly other other spatial deviation
Independent Detector	other other : unspecified cockpit
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Departed ind airport on a VFR photo flight. WX was ceiling and visibility unlimited. Upon leaving ind approach airspace I was told radar services terminated, squawk 1200. I requested a frequency for further radar advisory and was given 124.452, I requested and received verification of this frequency but I could not make contact. Approach had been very busy and I thought rather than tie up the frequency with further congestion I would try to get radar advisories en route to montpelier, in. I asked anq tower to suggest a frequency passing overhead at 7500 MSL. This frequency was fairly busy and I could not get a response. After two attempts at contact, I decided to prepare for the photo runs at 6850 MSL. I had neglected to change transponder to 1200 when released by ind approach. After 30 min of photo passes I proceeded to summit lake (10 mi south of muncie, in) for the next photo. I made a steep climb to 13100 MSL for the photo. Just after leveling off at 13100 as I began to line up on summit lake I caught an airline approaching from my 8 O'clock position slightly above me. We were on converging courses. I immediately began a descent and lost view of the airliner as he passed over head. I would estimate we were 500 ft apart vertical. I will make a greater effort in the future to maintain contact with radar advisory service. Callback conversation with reporter revealed the following information: reporter states the altitudes used were required for photographic purposes. There has been no follow up on the incident.

Original NASA ASRS Text

Title: STATE GOVT ACFT ON PHOTO MISSION HAS NMAC WITH ACR.

Narrative: DEPARTED IND ARPT ON A VFR PHOTO FLT. WX WAS CEILING AND VISIBILITY UNLIMITED. UPON LEAVING IND APCH AIRSPACE I WAS TOLD RADAR SERVICES TERMINATED, SQUAWK 1200. I REQUESTED A FREQ FOR FURTHER RADAR ADVISORY AND WAS GIVEN 124.452, I REQUESTED AND RECEIVED VERIFICATION OF THIS FREQ BUT I COULD NOT MAKE CONTACT. APCH HAD BEEN VERY BUSY AND I THOUGHT RATHER THAN TIE UP THE FREQ WITH FURTHER CONGESTION I WOULD TRY TO GET RADAR ADVISORIES ENRTE TO MONTPELIER, IN. I ASKED ANQ TWR TO SUGGEST A FREQ PASSING OVERHEAD AT 7500 MSL. THIS FREQ WAS FAIRLY BUSY AND I COULD NOT GET A RESPONSE. AFTER TWO ATTEMPTS AT CONTACT, I DECIDED TO PREPARE FOR THE PHOTO RUNS AT 6850 MSL. I HAD NEGLECTED TO CHANGE TRANSPONDER TO 1200 WHEN RELEASED BY IND APCH. AFTER 30 MIN OF PHOTO PASSES I PROCEEDED TO SUMMIT LAKE (10 MI S OF MUNCIE, IN) FOR THE NEXT PHOTO. I MADE A STEEP CLB TO 13100 MSL FOR THE PHOTO. JUST AFTER LEVELING OFF AT 13100 AS I BEGAN TO LINE UP ON SUMMIT LAKE I CAUGHT AN AIRLINE APCHING FROM MY 8 O'CLOCK POS SLIGHTLY ABOVE ME. WE WERE ON CONVERGING COURSES. I IMMEDIATELY BEGAN A DSCNT AND LOST VIEW OF THE AIRLINER AS HE PASSED OVER HEAD. I WOULD ESTIMATE WE WERE 500 FT APART VERT. I WILL MAKE A GREATER EFFORT IN THE FUTURE TO MAINTAIN CONTACT WITH RADAR ADVISORY SERVICE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THE ALTS USED WERE REQUIRED FOR PHOTOGRAPHIC PURPOSES. THERE HAS BEEN NO FOLLOW UP ON THE 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.