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CEN11CA565

2011-08-10 · Bronson, Iowa, United States · None · 1 aircraft · Status: Completed

Airport 7K8

Current FAA registration · N9054W

Make / Model
WEATHERLY 201C
Year of manufacture
1977 · 34 years old at event
Engine
P&W R-985 SERIES (450 hp)
Seats / Engines
1 seats · 1 engine
Last airworthiness date
19770608
ADS-B equipped
Yes — Mode-S AC84B8

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot's failure to maintain clearance from terrain while maneuvering during an aerial application flight.

Factual narrative

The pilot reported that the airplane’s airspeed decayed when he maneuvered to avoid some high tension power lines while conducting an agricultural application pass. He leveled the wings and applied full engine power. The pilot turned further in an effort to avoid a populated area and toward a low point in the rising terrain. The pilot added that after exiting the agricultural field, the airplane entered a valley located between rolling hills, at which time the airplane started to sink. There was a tree that was going to be a conflict so the pilot attempted to dump the chemical load. The airplane's right wing struck the tree and the airplane subsequently impacted the ground. The airplane sustained substantial damage to the right wing and fuselage. The pilot reported that there were no failures or malfunctions associated with the airplane prior to the accident. The pilot reported that the airplane’s airspeed decayed when he maneuvered to avoid some high tension power lines, while conducting an agricultural application pass. He leveled the wings and applied full engine power. The pilot turned further in an effort to avoid a populated area and toward a low point in the rising terrain. The airplane then entered a valley located between rolling hills, at which time the airplane started to sink. The airplane's right wing struck a tree and the airplane subsequently impacted the ground. The airplane sustained substantial damage to the right wing and fuselage. The pilot reported that there were no mechanical malfunctions or anomalies with the airplane. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Altitude-Not attained/maintained - C
  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Climb rate-Not attained/maintained - C
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • C Personnel issues-Psychological-Attention/monitoring-Monitoring environment-Pilot - C

Verbatim from NTSB's published report. Source file NTSB_2011_CEN11CA565.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.