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Near midair collision between a C340 eastbound IFR at 7000 ft along shoreline and a military T34 doing aerobatics in VFR conditions and coming within 200 ft of the C340.
| Attributes | |
| ACN | 468126 |
| Time | |
| Date | 200003 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : pns.airport |
| State Reference | FL |
| Altitude | msl bound lower : 6800 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Cessna 340/340A |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : p31.tracon |
| Operator | other |
| Make Model Name | Mentor (T-34) |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | cruise other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller limited radar : 3 controller non radar : 3 controller radar : 7 controller time certified in position1 : 6 |
| ASRS Report | 468126 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | conflict : nmac |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | controller : issued advisory none taken : anomaly accepted none taken : insufficient time |
| Miss Distance | horizontal : 0 vertical : 200 |
| Supplementary | |
| Problem Areas | Company |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
The military encourages its pilots to train aerobatically along the coastline between navy pensacola and navarre, fl. Eglin AFB requires all traffic to transit via the coastline to remain south of their restr areas and north of their warning areas. The military refuses to require its pilots to be in contact with P31 to receive advisories on this traffic. In this scenario, C340 was eastbound 2 mi off the coast at 7000 ft. I began issuing advisories with 6 mi lateral separation. At the closest point, the primary radar returns had merged with 200 ft separation indicated by mode C. The civilian pilot never had the aerobatic T34 in sight. Who knows whether the T34 pilot had the C340 in sight since they refuse to talk to us. This is a dangerous situation and I would like to be on record reporting it when something happens.
Original NASA ASRS Text
Title: NMAC BTWN A C340 EBOUND IFR AT 7000 FT ALONG SHORELINE AND A MIL T34 DOING AEROBATICS IN VFR CONDITIONS AND COMING WITHIN 200 FT OF THE C340.
Narrative: THE MIL ENCOURAGES ITS PLTS TO TRAIN AEROBATICALLY ALONG THE COASTLINE BTWN NAVY PENSACOLA AND NAVARRE, FL. EGLIN AFB REQUIRES ALL TFC TO TRANSIT VIA THE COASTLINE TO REMAIN S OF THEIR RESTR AREAS AND N OF THEIR WARNING AREAS. THE MIL REFUSES TO REQUIRE ITS PLTS TO BE IN CONTACT WITH P31 TO RECEIVE ADVISORIES ON THIS TFC. IN THIS SCENARIO, C340 WAS EBOUND 2 MI OFF THE COAST AT 7000 FT. I BEGAN ISSUING ADVISORIES WITH 6 MI LATERAL SEPARATION. AT THE CLOSEST POINT, THE PRIMARY RADAR RETURNS HAD MERGED WITH 200 FT SEPARATION INDICATED BY MODE C. THE CIVILIAN PLT NEVER HAD THE AEROBATIC T34 IN SIGHT. WHO KNOWS WHETHER THE T34 PLT HAD THE C340 IN SIGHT SINCE THEY REFUSE TO TALK TO US. THIS IS A DANGEROUS SIT AND I WOULD LIKE TO BE ON RECORD RPTING IT WHEN SOMETHING HAPPENS.
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.