AD 2018-03-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Aeroclubul Romaniei Gliders |
Unsafe Condition
Cracks at stringers in the rear fuselage of several Model IS-28B2 gliders, which could lead to reduced structural strength resulting in loss of structural integrity and loss of control.
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Required Actions
Inspect the rear fuselage structure within 90 days after March 20, 2018, and repetitively thereafter at intervals not to exceed 50 hours time-in-service (TIS), following the instructions in Aeroclubul Romaniei Service Bulletin (SB) No.: SB-IS-28B2-AR-01, Revision 003, dated February 9, 2017. If any crack or corrosion is detected, modify the rear fuselage structure before further flight, following the instructions in Aeroclubul Romaniei SB No.: SB-IS-28B2-AR-02, Revision 01, dated February 24, 2017.
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Compliance Time
Within 90 days after March 20, 2018
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Affected Aircraft
Aeroclubul Romaniei Model IS-28B2 gliders, all serial numbers, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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