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Atlas / NTSB / DEN99LA138

NTSB CAROL · Event

Event DEN99LA138

1999-08-07 DURANGO, Colorado, United States Airport · 5CO0 None 1 aircraft Status: Completed

Registry · N4835F

FAA Aircraft Registry record.

Make / Model

CESSNA TU206A

Engine

CONT MOTOR GTSIO-520-C (340 hp)

Seats / Engines

6 seats · 1 engine

Last airworthiness date

19660308

ADS-B equipped

Yes — Mode-S A5F6CB

Registrant of record

HERNANDEZ CHRISTOPHER A

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

A worn landing nose gear steering system that diminished the ability to steer the airplane. Factors were improper maintenance by unknown persons, and loose gravel.

Factual narrative

On August 7, 1999, at 2359 mountain daylight time, a Cessna TU206A, N4835F, sustained substantial damage when it departed the left side of runway 01 during landing roll at Animas Air Park, Durango, Colorado. The commercial pilot and his four passengers were not injured. Visual meteorological conditions prevailed for this personal flight operating under Title 14 CFR Part 91 and no flight plan was filed. The flight originated from Window Rock, Arizona, at 2100. Weather at the time was clear skies with wind from 350 degrees at four knots. According to the pilot, the aircraft had traveled a short distance following a normal touchdown on runway centerline when the aircraft pulled hard to the left and exited the left side of the runway onto a gravel covered area. He said that as the aircraft decelerated through an estimated 10 miles per hour, the nose wheel broke off. Examination of the aircraft by a mechanic employed by Greg's Flying Service, in Durango, provided evidence that the left wing, propeller, and nose landing gear has sustained damage. The mechanic also found that one of the nose wheel steering arm roll pins was missing and a piece of safety wire was substituted, and the other roll pin and roll pin receptacles were worn beyond limits. (See attached diagram.) According to the flying service mechanic, this would cause the nose wheel steering to be sloppy and slow to respond to pilot input. When the nose wheel steering had work performed on it is unknown. While landing at the completion of a cross-country flight the airplane departed the side of the runway onto loose gravel during landing roll, and the nose wheel assembly separated. Examination of the airplane disclosed that the nose wheel steering assembly was worn, and improper parts had been substituted. As a result, steering control was diminished. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1999_DEN99LA138.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗