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Atlas / NTSB / CEN25LA403

NTSB CAROL · Event

Event CEN25LA403

2025-09-29 Longmont, Colorado, United States None 1 aircraft Status: Completed

Registry · N86326

FAA Aircraft Registry record.

Make / Model

AERONCA 11AC

Year of manufacture

1946 · 79 years old at event

Engine

CONT MOTOR A&C65 SERIES (65 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19580620

ADS-B equipped

Yes — Mode-S ABDCB9

Registrant of record

REGISTRATION PENDING

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

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.

Factual narrative

The pilot reported that there was a total loss of engine power while 1,200 feet above ground level and about 6 nautical miles short of his destination. He performed an off-airport landing, in a pasture, with cows at the far end. During short final, the pilot had to maneuver to avoid rough terrain and a fence and then flared the airplane too high and yawed to one side which resulted in a hard landing. The tailwheel collapsed and there was substantial damage to the rudder. The pilot reported that there were no preaccident mechanical malfunctions or failures that would have precluded normal operation. He stated that a miscalculation of fuel quantity and fuel burn led to the fuel exhaustion. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • Personnel issues-Task performance-Planning/preparation-Fuel planning-Pilot
  • Aircraft-Fluids/misc hardware-Fluids-Fuel-Fluid level
  • Environmental issues-Physical environment-Object/animal/substance-Fence/fence post-Ability to respond/compensate
  • Environmental issues-Physical environment-Terrain-Rough terrain-Ability to respond/compensate
  • Personnel issues-Task performance-Use of equip/info-Use of equip/system-Pilot

Verbatim from NTSB's published report. Source file NTSB_2025_CEN25LA403.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.