Landing Gear — Safety Device Modification at Nose Gear Retraction Actuator to Main Fitting Joint
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must amend their Transport Canada approved maintenance schedules within 30 days of the effective date to include the specified Airworthiness Limitation Task. A visual inspection of the cotter pin must be completed within 6 months, and if damage is found, the required modification must be performed following Bombardier Service Bulletins. Additionally, no incorporation of the prohibited LIEBHERR-AEROSPACE service bulletin is allowed from the effective date onward.
Summary
The Airworthiness Directive CF-2018-05 issued by Transport Canada mandates safety modifications to the nose landing gear retraction actuator to main fitting joint on Bombardier Inc. model BD-700-1A10 and BD-700-1A11 aircraft, serial numbers 9002 to 9638 and 9998. This directive addresses potential damage to the cotter pin that could cause actuator disconnect and landing gear failure. It requires maintenance schedule revisions, visual inspections, and possible hardware modifications.
What changed
This new Airworthiness Directive introduces mandatory revisions to the approved maintenance schedule and requires a visual inspection of the cotter pin on the nose landing gear retraction actuator joint. If damage is found, a modification involving a new castellated nut, spacer, end plate, and sleeve must be installed. It also prohibits the incorporation of LIEBHERR-AEROSPACE SB 1285A-32-07 on affected aircraft from the effective date.
Why it matters
This directive is critical for aviation professionals to prevent potential landing gear failures that could compromise flight safety during takeoff or landing. Operators and maintenance organizations must ensure compliance to avoid hardware disconnects that could lead to undamped freefall of the nose landing gear. Compliance ensures continued airworthiness and regulatory adherence under Canadian Aviation Regulations.
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