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Atlas / NTSB / SEA07LA145

NTSB CAROL · Event

Event SEA07LA145

2007-03-31 McCall, Idaho, United States Airport · KMYL None 1 aircraft Status: Completed

Registry · N46SA

FAA Aircraft Registry record.

Make / Model

SWEARINGEN SA-226T

Year of manufacture

1973 · 34 years old at event

Engine

AIRESEARCH 331SER 705HP (705 hp)

Seats / Engines

8 seats · 2 engines

Last airworthiness date

19730426

ADS-B equipped

Yes — Mode-S A598D3

Registrant of record

HOPLAND STEVEN

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The nosewheel steering system's uncommanded turn during the landing roll, making it impossible for the pilot to maintain directional control. Factors include a snow bank running parallel to the side of the runway.

Factual narrative

On March 31, 2007, approximately 1830 mountain daylight time, a Swearingen SA-226T, N46SA, departed the runway and impacted a snow bank during the landing roll at McCall Municipal Airport, McCall, Idaho. The airline transport pilot and his six passengers were not injured, but the aircraft, which is registered to Matheson-Talmage LLC, sustained substantial damage. The 14 CFR Part 91 business flight, which departed Paine Field, Everett, Washington, approximately two hours and fifteen minutes prior to the accident, was being operated in visual meteorological conditions. The aircraft had been on an IFR flight plan. According to the pilot, the touchdown and rollout were uneventful until he activated/engaged the nose wheel steering system to make a left turn off the runway. At that time, the aircraft suddenly veered to the right and departed the side of the runway. After the aircraft departed the runway, it encountered a four foot high snow bank, which resulted in substantial damage to the airframe. After the accident, the nose wheel steering system was examined and tested, and it was determined that the nose wheel was making uncommanded turns when the system was activated. The source of the system malfunction that lead to the uncommanded turns could not be positively identified. The aircraft's touchdown and rollout were uneventful until the pilot activated/engaged the nosewheel steering system to make a left turn off the runway. At that time, the aircraft suddenly veered to the right and departed the side of the runway. After the aircraft departed the runway, it encountered a four-foot-high snow bank, which resulted in substantial damage to the airframe. After the accident, the nosewheel steering system was examined and tested, and it was determined that the nosewheel was making uncommanded turns when the system was activated. The source of the system malfunction that lead to the uncommanded turns could not be positively identified. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_2007_SEA07LA145.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.