Main Landing Gear Collapsed-TC Beech A100 King Air - 16 July 1998

Transport Canada 
Beech A100 King Air C-FDOR

Safety Action Taken
(as presented in the TSB Report)

Since the occurrence Transport Canada, ASD, has taken the following actions:

  1. The Beech A100 King Air SOPs have been amended to allow a single, in-flight reset of the electric hydraulic pump motor 60-amp circuit breaker.
  2. The 60-amp circuit breaker in the accident aircraft has been relocated to the aircraft cockpit. This location is now the same as on the other Beech King Air aircraft in the ASD fleet that have the Aviadesign STC hydraulic landing gear.
  3. A mirror has been installed on the inboard side of the Beech A100 King Air engine cowlings to provide a means for pilots to observe the nose landing gear position from the aircraft cockpit.
  4. The ASD Flight Operations Manual was amended to read, "where practicable, it is recommended that the pilot contact the applicable ASD operations centre, and state the nature of the problem, the assistance required, and the time remaining before a landing is necessary."

Safety Action Required
(as presented in the TSB Report)

The safety actions taken by Transport Canada, ASD, have possible continuing airworthiness operational implications for the fleet of similar aircraft operating elsewhere in Canada and in other countries. These actions include permitting a single in-flight reset of the electric hydraulic pump motor 60-amp circuit breaker, relocating the 60-amp circuit breaker to the cockpit, and installing a mirror to provide a means for the pilot to observe the nose landing gear position from the cockpit. Dissemination of this information to other King Air operators in Canada and around the world for the purpose of possible similar safety actions by other operators would reduce the risk of similar accidents.

Annex 8, "Airworthiness of Aircraft," to the Convention on International Civil Aviation contains provisions urging the State of Registry of an aircraft to notify the State of Design about information that might cause adverse effects on the continuing airworthiness of an aircraft. It seems appropriate that the changes to the configuration and operating procedures for the Transport Canada King Air fleet should be brought to the attention of the Federal Aviation Administration in the United States, the State of Design, for possible fleet-wide safety action. Therefore, the Board recommends that:

The Department of Transport ensure that all Canadian operators of the Beech King Air with the Aviadesign landing gear modification are advised of the circumstances of this accident and the safety actions taken, with the view toward implementing similar changes to prevent a future similar accident. (A00-07)

Transport Canada's Response:

A Service Difficulty Advisory ( HTML or PDF ) has been published and distributed to all Aircraft Maintenance Engineers, owners, and operators of affected aircraft. In addition, Transport Canada will publish an article in the Aviation Safety Letter to inform operators of the accident and the safety actions taken.

The Department of Transport notify the United States Federal Aviation Administration, in accordance with Annex 8, "Airworthiness of Aircraft," to the Convention on International Civil Aviation, about the circumstances of this accident and the safety actions taken, with the view toward wider application of the safety actions. (A00-08)

Transport Canada's Response:

A letter has been sent to the FAA outlining Transport Canada’s concerns regarding the Aviadesign Supplemental Type Certificate SA 0313WE
( HTML or PDF )

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