# Accident 20230901015639A: Brown Benjamin C CHALLENGER II, Moultonborough, NH, September 1, 2023

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 1, 2023, 09:10 local time
- Place: Moultonborough, NH
- Airport: Moultonborough
- Damage: Substantial damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: General operating rules (Part 91)
- Location: 43.7554° N, 71.4186° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=43.7554&lon=-71.4186&mi=10
- Aircraft: N2480Y, registered now (https://openairdocs.org/aircraft/N2480Y) (OpenAirDocs)
- Registry model: Brown Benjamin C CHALLENGER II (registry code 0590207, https://openairdocs.org/model/brown-benjamin-c-challenger-ii) (OpenAirDocs)
- Registry engine: Rotax 503 DCDI (registry code 55566, https://openairdocs.org/engine/rotax-503-dcdi) (OpenAirDocs)
- Reported make and model: BROWN BENJAMIN C CHALLENGER II
- Reported engine: ROTAX 503 DCDI
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Private pilot
- Pilot flight hours: 430 total
- NTSB investigation: [NTSB ERA23LA360](https://openairdocs.org/ntsb/ERA23LA360) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20230901015639A

## Narrative

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

PILOT STATED THE AIRCRAFT PRODUCED NORMAL TAKEOFF POWER AND DEPARTED THE RUNWAY WITHOUT ISSUE BUT SHORTLY AFTER DEPARTING RUNWAY 22 AT 4MB THE ENGINE SLOWLY LOST POWER FOR UNKNOWN REASONS AND THE PILOT PERFORMED AN EMERGENCY ENGINE OUT LANDING IN A FIELD NEAR THE AIRPORT.  THE PILOT STATED HE ATTEMPTED A RESTART TWICE BUT THEN DETERMINED HE HAD MININAL TIME TO MAKE AN EMERGENCY LANDING AND PRUDENTLY DID SO.

## 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 ERA23LA360](https://openairdocs.org/ntsb/ERA23LA360), Sep 1, 2023: Brown Benjamin C Challenger II (N2480Y), Moultonborough, NH, substantial damage. Probable cause: A loss of engine power due to a loss of compression in one of the engine’s two cylinders.

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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