AD 2021-24-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Leonardo S.p.a. Helicopters |
Unsafe Condition
stress corrosion and hydrogen embrittlement on the threaded end of the main landing gear (MLG) strut in the MLG wheel assembly
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
repetitive inspections of each affected MLG strut assembly and, depending on the findings, replacement of an affected MLG strut assembly with a serviceable assembly, or application of corrosion preventive compound, as specified in EASA AD 2019-0182
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Compliance Time
Within 50 flight hours
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Affected Aircraft
Leonardo S.p.a. Model A109E, A109S, and AW109SP helicopters, all serial numbers
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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