# Accident 20240428004789A: Stephen R Kunkle MUSTANG II, Philadelphia, PA, April 28, 2024

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 28, 2024, 14:58 local time
- Place: Philadelphia, PA
- Airport: Northeast Philadelphia
- Damage: Substantial damage
- Phase of flight: Landing: Rollout
- Operating rules: General operating rules (Part 91)
- Location: 40.0819° N, 75.0106° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=40.0819&lon=-75.0106&mi=10
- Aircraft: N1855M, a cancelled registration (https://openairdocs.org/deregistered/N1855M-2025-06-23) (OpenAirDocs)
- Registry model: Stephen R Kunkle MUSTANG II (registry code 05632MD, https://openairdocs.org/model/stephen-r-kunkle-mustang-ii) (OpenAirDocs)
- Registry engine: Lycoming IO-320-B1C (registry code 41909, https://openairdocs.org/engine/lycoming-io-320-b1c) (OpenAirDocs)
- Reported make and model: STEPHEN R KUNKLE MUSTANG II
- Reported engine: LYCOMING IO-320-B1C
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Private pilot
- Pilot flight hours: 657 total, 296 in this make and model, 13 in the last 90 days
- NTSB investigation: [NTSB ERA24LA202](https://openairdocs.org/ntsb/ERA24LA202) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20240428004789A

## Narrative

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

THE PILOT LANDED HIS EXPERIMENTAL AMATUER BUILT CONVENTIONAL TAILWHEEL AIRCRAFT ON RUNWAY 24 AT PNE.  DURING THE ROLLOUT, THE PIC HAD DIFFICULTY CONTROLLING THE RUDDER AND TAILWHEEL ADEQUATELY, SUBSEQUENTLY ENTERING A GROUND LOOP AND CAUSING THE LEFT GEAR TO COLLAPSE.  THE AIRCRAFT VEERED OFF THE RIGHT SIDE OF THE RUNWAY ONTO THE GRASS AND CAME TO REST.  THE PIC AND PASSENGER WERE NOT INJURED.  THE AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE TO THE LEFT WING, LEFT GEAR, LEFT SIDE OF FUSELAGE AT WING ROOT, AND LEFT WING FLAP.

## 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 ERA24LA202](https://openairdocs.org/ntsb/ERA24LA202), Apr 28, 2024: Stephen R Kunkle Mustang II (N1855M), Philadelphia, PA, substantial damage. Probable cause: A loss of directional control during the landing roll.

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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