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Atlas / NTSB / WPR10CA434

NTSB CAROL · Event

Event WPR10CA434

2010-08-28 Duvall, Washington, United States Minor 1 aircraft Status: Completed

Registry · N4579H

FAA Aircraft Registry record.

Make / Model

PIPER PA-15

Engine

LYCOMING 0-145B SERIES (65 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19550819

ADS-B equipped

Yes — Mode-S A58FB8

Registrant of record

DAVIS RICK L

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

An in-flight collision with a bird while maneuvering.

Factual narrative

The pilot reported that prior to taking off for a personal flight he added 6 gallons of fuel to the airplane. This was adequate for several hours of flying. Thereafter, he proceeded to practice maneuvers in the local area. According to the pilot, no mechanical malfunctions occurred during flight. After flying about 45 minutes and during a turn, a brown bird suddenly appeared in the upper right corner of the windshield. It collided with the airplane. A portion of the windshield broke out, and the pilot lost partial control. The pilot was unable to maintain altitude, and he made a forced landing in an open field. During rollout on uneven terrain the landing gear separated from the fuselage, which was bent. The pilot reported that following departure he proceeded to practice maneuvers in the local area. According to the pilot no mechanical malfunctions occurred during flight. After flying about 45 minutes and during a turn, a brown bird suddenly appeared in the upper right corner of the windshield and collided with the airplane. A portion of the windshield broke out and the pilot lost partial control. The pilot was unable to maintain altitude and he made a forced landing in an open field. During rollout on uneven terrain the landing gear separated from the fuselage. 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 Environmental issues-Physical environment-Object/animal/substance-Animal(s)/bird(s)-Effect on equipment - C
  • Environmental issues-Physical environment-Terrain-Rough terrain-Contributed to outcome

Verbatim from NTSB's published report. Source file NTSB_2010_WPR10CA434.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.