# Accident 20110820021512A: Yakovlev YAK-55M, Hammonton, NJ, August 20, 2011

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 20, 2011, 13:15 local time
- Place: Hammonton, NJ
- Airport: Hammonton Municipal
- Damage: Destroyed
- Collision: Midair collision
- Phase of flight: Maneuver
- Operating rules: General operating rules (Part 91)
- Location: 39.6592° N, 74.7522° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=39.6592&lon=-74.7522&mi=10
- Aircraft: N521BC, a cancelled registration (https://openairdocs.org/deregistered/N521BC-2011-10-06) (OpenAirDocs)
- Registry model: Yakovlev YAK-55M (registry code 9830224, https://openairdocs.org/model/yakovlev-yak-55m) (OpenAirDocs)
- Registry engine: Vedeneyev M14P (registry code 63601, https://openairdocs.org/engine/vedeneyev-m14p) (OpenAirDocs)
- Reported make and model: YAKOVLEV YAK-55M
- Reported engine: VENDENYEV M14P
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Private pilot
- Pilot flight hours: 610 total, 260 in this make and model, 50 in the last 90 days
- NTSB investigation: [NTSB ERA11FA468](https://openairdocs.org/ntsb/ERA11FA468) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20110820021512A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON AUGUST 20, 2011, AT APPROXIMATELY 1315 LOCAL TIME, N521BC, A YAK 55, AND N71DM, A LANCAIR, COLLIDED AT THE TOP OF AN AEROBATIC PRACTICE AREA ESTABLISHED BY AN FAA CERTIFICATE OF WAIVER OR AUTHORIZATION. THE AEROBATIC BOX WAS ADJACENT TO HAMMONTON MUNICIPAL AIRPORT, HAMMONTON, N.J.  BOTH AIRCRAFT WERE DESTROYED. THE PILOT OF N71DM WAS FATALLY INJURED. THE PILOT OF N521BC SUSTAINED SERIOUS INJURIES DURING LANDING WHEN HE PARACHUTE FROM HIS AIRCRAFT.  VFR CONDITIONS PREVAILED WITH LIGHT WINDS AND VISIBILITY BETTER THAN 5 MILES.  THE "AEROBATIC BOX" NOTAM SPECIFIED IN THE AUTHORIZATION WAS IN EFFECT; HOWEVER, NO SPECIFIED NOTIFICATION OF INTENT TO USE THE AEROBATIC BOX WAS RECORDED BY THE WASHINGTON HUB FSS ONE HOUR PRIOR, NOR THE WRI OR ACY ATC FACILITIES 30 MINUTES PRIOR TO USE.  THERE IS NO RECORD OF THE PILOT OF N71DM RECEIVING EITHER A WEATHER OR NOTAM BRIEFING PRIOR TO FLIGHT.SEE ALSO AEA1711020 FOR OTHER AIRCRAFT AND PILOT INVOLVED IN THIS MIDAIR COLLISION.

## Other aircraft in the event

- N71DM, Mitchell David N LANCAIR IV P: [Accident 20110820021522A](https://openairdocs.org/incident/20110820021522A)

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ERA11FA468](https://openairdocs.org/ntsb/ERA11FA468), Aug 20, 2011: Yakovlev YAK-55M (N521BC), Hammonton, NJ, substantial damage, 1 fatal. Probable cause: The Lancair pilot's failure to see and avoid the aerobatic airplane. Contributing to the accident was the Lancair pilot's inadequate use of collision avoidance strategies while inbound to an area of…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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