AD 2020-25-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab | AB | Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes |
Unsafe Condition
NLG door attachment bolts are susceptible to hydrogen embrittlement, decreasing the mechanical characteristics. This condition could lead to failure of the affected parts, which would impair the link between the NLG and NLG door and could prevent the extension or retraction of the NLG, and cause consequent damage to the airplane and possible loss of control during landing.
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Required Actions
Replacing certain NLG door attachment bolts with serviceable bolts, as specified in EASA AD 2020-0149.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
All Saab AB, Support and Services Model 340A (SAAB/SF340A) and SAAB 340B airplanes; and Model SAAB 2000 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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