# Accident 20250929018349A: Aeronca 11AC, Longmont, CO, September 29, 2025

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 29, 2025, 12:10 local time
- Place: Longmont, CO
- Airport: Longmont Vance Brand
- Damage: Substantial damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 40.1672° N, 105.1019° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=40.1672&lon=-105.1019&mi=10
- Aircraft: N86326, registered now (https://openairdocs.org/aircraft/N86326) (OpenAirDocs)
- Registry model: Aeronca 11AC (registry code 0191102, https://openairdocs.org/model/aeronca-11ac) (OpenAirDocs)
- Registry engine: Continental A&C65 series (registry code 17003, https://openairdocs.org/engine/continental-a-c65-series) (OpenAirDocs)
- Reported make and model: AERONCA 11AC
- Reported engine: CONT MOTOR A&C65 SERIES
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Commercial pilot, private pilot
- Pilot flight hours: 1,120 total, 2 in this make and model, 40 in the last 90 days
- NTSB investigation: [NTSB CEN25LA403](https://openairdocs.org/ntsb/CEN25LA403) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20250929018349A

## Narrative

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

PILOT IN COMMAND HAD 8.5 GALLONS ON BOARD FOR A LOCAL FLIGHT WITH PATTERN PRACTICE AT GREELEY. STATED FUEL BURN TO BE 4 GALLONS AN HOUR BASED ON TACH  TIME. AFTER APPROXIMATELY 2 HOURS OF ELAPSED FLIGHT TIME ENGINE LOST POWER AND AN OFF FIELD LANDING WAS MADE WITH DAMAGE TO THE AIRCRAFT BUT NO INJURIES. NO WATER FOUND IN THE RESIDUAL REMAINING FUEL ESTIMATED TO BE LESS THEN A QUART BASES ON VISUAL INSPECTION OF THE FUEL TANK.

## 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 CEN25LA403](https://openairdocs.org/ntsb/CEN25LA403), Sep 29, 2025: Aeronca 11AC (N86326), Longmont, CO, substantial damage. Probable cause: The pilot’s inadequate preflight fuel planning, which resulted in a total loss of engine power due to fuel exhaustion and the pilot’s improper landing flare which resulted in a hard landing.

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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