NTSB CAROL · Event
Event GAA16CA317
Aircraft involved
Probable cause & findings
The pilot's failure to replace the oil filler cap following the preflight inspection, which resulted in a loss of engine oil and engine power, an emergency landing, and impact with terrain.
Factual narrative
The pilot reported that about 15 minutes after takeoff he smelled something burning and the cabin filled with smoke. The pilot further reported that the engine lost power and that he was forced to maneuver for an emergency landing. After the loss of power, he heard a "clanging noise" from the engine. While landing in a field, the airplane impacted blueberry bushes and a fence, which resulted in substantial damage to the fuselage. During a postaccident examination by the local law enforcement, it was revealed that the oil filler cap was not in place on the oil filler tube. The oil filler cap retaining chain was still attached to the oil cap and the oil filler tube. Upon further examination of the oil cap and the oil filler tube, no evidence of damage was noted. The pilot reported there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The pilot reported that about 15 minutes after takeoff he smelled something burning and the cabin filled with smoke. The pilot further reported that the engine lost power and that he was forced to maneuver for an emergency landing. After the loss of power, he heard a "clanging noise" from the engine. While landing in a field, the airplane impacted blueberry bushes and a fence, which resulted in substantial damage to the fuselage. During a postaccident examination by the local law enforcement, it was revealed that the oil filler cap was not in place on the oil filler tube. The oil filler cap retaining chain was still attached to the oil cap and the oil filler tube. Upon further examination of the oil cap and the oil filler tube, no evidence of damage was noted. The pilot reported there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. 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).
- C Aircraft-Fluids/misc hardware-Fluids-Oil-Inadequate inspection - C
- C Personnel issues-Task performance-Inspection-Preflight inspection-Pilot - C
- C Personnel issues-Action/decision-Action-Lack of action-Pilot - C
- — Environmental issues-Physical environment-Object/animal/substance-Fence/fence post-Contributed to outcome
Verbatim from NTSB's published report. Source file
NTSB_2016_GAA16CA317.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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