AD Amdt-39-10263
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Aircraft Inc | Airworthiness Directives; Aviat Aircraft Inc. Models S-2A, S-2B, and S-2S Airplanes (formerly Pitts Models S-2A, S-2B, and S-2S airplanes) |
Unsafe Condition
Cracking in the upper longerons caused by operating the airplane outside of the certificated design limits, leading to subsequent failure of the longerons and consequent loss of control of the airplane.
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Required Actions
Inspect upper longerons aft of the rear cabane struts and forward of the instrument panel for cracks. Modify cracked longerons using Aviat Kit No. S-2-513. Insert revisions into the Airplane Flight Manual (AFM) as per Aviat SB No. 24. Either install a marked accelerometer with +6g/-3g placard or install a placard prohibiting acrobatic maneuvers.
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Compliance Time
Within 100 flight hours after the effective date of January 22, 1998.
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Affected Aircraft
Aviat Aircraft Inc. Models S-2A (all serial numbers), S-2B (serial numbers 5000 through 5350), and S-2S (all serial numbers).
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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