SEA06CA048

NTSB accident investigation · Cessna A185E · Lewiston, ID · January 30, 2006

Accident · No injuriesData collectionFinal report
Date
January 30, 2006, 11:30 local (19:30 UTC)
Place
Lewiston, ID
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2303YCessna A185E
Weather
Visual (VMC) · Day
Status
Completed · report May 30, 2006
Report
Approved by Office Director
FAA report
20060130001389A
Case key
63172

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The failure of the left main landing gear attaching bolt, which resulted in the left main gear collapsing during the landing roll.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionLanding - roll
Landing gear,main gear attachment - failureCause
Main gear collapsedLanding - roll
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - dirt bank/rising embankment

Analysis

According to the pilot, upon touchdown, the left landing gear leg "started to fail" as the airplane's weight came onto the wheels. The left gear folded outward, and the airplane veered to the left. The airplane's left wing tip contacted an embankment, and the airplane came to a stop. Examination of the airplane by an FAA inspector revealed that there was structural damage to the left gear box, left wing strut, left wing tip, left aileron, the rear spar of the left wing, and the propeller. The inspector found that the 7/16-inch AN bolt that held the left gear leg to the fuselage failed in shear loading. Failure of the bolt allowed the gear to pivot on the landing gear box leading to failure of the lower landing gear box web.

Factual narrative

On January 30, 2006, about 1130 Pacific standard time, a Cessna A185E, N2303Y, sustained substantial damage when the left main landing gear collapsed during landing at a private airstrip approximately 25 nautical miles south southeast of Lewiston, Idaho. The private pilot and the two passengers aboard were not injured. The airplane was registered to the Bentz Fence Company Inc. of Lewiston and operated by the pilot. Visual meteorological conditions prevailed and no flight plan was filed for the 14 CFR Part 91 personal flight that departed from the Lewiston - Nez Perce County Airport about 1100 with an intended destination of the private airstrip.

According to the pilot, upon touchdown, the left landing gear leg "started to fail" as the airplane's weight came onto the wheels. The left gear folded outward, and the airplane veered to the left. The airplane's left wing tip contacted an embankment, and the airplane came to a stop.

Examination of the airplane by an FAA inspector revealed that there was structural damage to the left gear box, left wing strut, left wing tip, left aileron, the rear spar of the left wing, and the propeller. The inspector found that the 7/16-inch AN bolt that held the left gear leg to the fuselage failed in shear loading. Failure of the bolt allowed the gear to pivot on the landing gear box leading to failure of the lower landing gear box web.

Aircraft

Registration
N2303Y
Reported as
Cessna A185E
Category
Airplane
Serial number
185-01868
Engine
Continental IO-520-D, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Departed
LWS · Lewiston, ID
Destination
Lewiston, ID
Airport
NONE · Private Airstrip, runway UNK

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
60
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3
Flight hours
3,264 total · 2,984 in this make and model

Weather

Conditions
Visual (VMC) · Day

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N2303Y · 1

Matched to the same aircraft by N-number and date.