AD 2024-12-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer | S | Airworthiness Directives; Embraer S.A. (Type Certificate Previously Held by Yaborã Indústria Aeronáutica S.A.; Embraer S.A.) Airplanes |
Unsafe Condition
Failure of the main landing gear (MLG) locking-stay bracket assembly due to failure of a self-locking nut (P/N MS17826-5), which can result in uncommanded retraction of the landing gear and loss of directional control if the landing gear collapses.
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Required Actions
Review maintenance records to determine if the MLG was modified according to Embraer Service Bulletin 170-32-0089 or restored during overhaul maintenance. Inspect the left and right MLG locking-stay bracket assemblies to verify correct installation of attaching hardware. Replace nuts with part numbers MS17826-5. Replace the locking-stay bracket assembly if any anomalies are detected. Prohibit installation of affected parts on the MLG locking-stay bracket assembly.
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Compliance Time
Within 120 flight hours after the effective date of this AD.
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Affected Aircraft
Embraer S.A. Model ERJ 170 airplanes, as specified in ANAC AD E2024-05-09R01.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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