Landing Gear — Nose Landing Gear Shock Strut Cylinder Corrosion
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Bombardier BD-100-1A10 aircraft must inspect and modify the NLG shock strut cylinders according to the compliance schedule based on the serial number and time since new of the NLG assembly. Modifications must follow Bombardier Service Bulletins 100-32-33 or 350-32-009, as applicable. Installation of replacement NLG shock strut assemblies with part numbers 40630-111, 40630-113, or 44630-101 is prohibited unless reworked and marked per the service bulletins. Compliance deadlines vary from immediate at the 96-month inspection to within specified months depending on NLG assembly age.
Summary
Canadian Airworthiness Directive CF-2019-43 addresses corrosion found on the nose landing gear (NLG) shock strut cylinders of Bombardier BD-100-1A10 aircraft, serial numbers 20003 through 20767. This directive mandates inspections and modifications to the NLG shock strut cylinders to prevent structural failure due to corrosion. It also restricts installation of certain replacement NLG shock strut assemblies unless reworked according to specified service bulletins.
What changed
CF-2019-43 introduces mandatory inspections and corrosion protection modifications for the NLG shock strut cylinders on affected Bombardier BD-100-1A10 aircraft. It specifies different compliance schedules based on the time since new of the NLG assemblies and prohibits installation of certain replacement parts unless reworked per approved service bulletins. This is a new directive addressing a previously identified corrosion issue.
Why it matters
This directive is critical for operators and maintenance organizations to prevent potential structural failure of the nose landing gear due to corrosion, which could compromise aircraft safety. Compliance ensures continued airworthiness and regulatory adherence, reducing the risk of unscheduled maintenance and operational disruptions. Maintenance teams must apply the specified modifications to maintain corrosion resistance and avoid installation of non-compliant parts.
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