Casualties unknown

1999-09-11: Cessna 182 (N1881X) — Kenneth W. Simonis — Anchorage, AK

Anchorage, AK, US

On September 11, 1999, a Cessna 182 (registration N1881X) operated by Kenneth W. Simonis was involved in an aviation accident near Anchorage, AK. Investigators recorded the probable cause as: Installation of a nose landing gear assembly from an earlier model Cessna 182 that lacked a shimmy damper and provisions for steering bungee connections. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 9 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

During a ferry flight landing, the nose wheel of a privately-operated airplane began vibrating and then collapsed, causing substantial damage to the engine firewall. Investigation revealed an improperly installed nose gear assembly from an earlier model Cessna 182, lacking a shimmy damper and steering bungee connection.

Background

The private pilot, who also held a mechanic's certificate with inspection authorization, was landing the airplane after a ferry flight. The aircraft had been involved in a previous accident (reported under ANC99LA155).

Accident Sequence

Immediately after touchdown, the nose wheel began to vibrate. The nose gear assembly subsequently collapsed, and the engine firewall—to which the temporary nose gear assembly had been attached—sustained substantial damage.

Post-Accident Inspection

Inspection by an FAA airworthiness inspector revealed that a nose landing gear assembly intended for an earlier model Cessna 182 had been installed on the airplane. This assembly was not equipped with a shimmy damper, nor did it have provisions for connection to the steering bungees. Additionally, a doubler had been installed on the previously damaged firewall to provide mounting structure for the nose gear assembly.

Previous Damage

Review of photographs taken at the site of the first accident indicated that, prior to the ferry flight, the airplane had substantial damage to the left wing, left horizontal stabilizer, and left elevator—including the outboard 4 inches of the elevator missing, along with the left elevator tip counterweight. Damage was also noted to the tail cone, empennage, and lower engine cowling.

FAA Actions

The FAA issued a ferry permit for the airplane to conduct the flight. However, the FAA did not inspect the airplane nor verify the extent of damage that existed before the flight occurred. The last annual inspection on the airplane was performed on July 18, 1997, 26 months before the first accident.

Probable cause

Installation of a nose landing gear assembly from an earlier model Cessna 182 that lacked a shimmy damper and provisions for steering bungee connections.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X19672. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.