AD 73-16-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat Aircraft Inc | S-2A | Airworthiness Directives; Pitts S-2A Airplanes |
Unsafe Condition
Failure of the induction air box flapper door due to cracks in the welded areas could cause power loss.
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Required Actions
Install stiffener (Pitts Part Number 2-7112-16) to the induction air box flapper door assembly (Pitts Part Number 2-7112-7) within 50 hours time in service after the effective date. Until the modification is done, visually check for cracks every 5 hours time in service. If cracks are found, remove the flapper door and install the stiffener before further flight.
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Compliance Time
Within the next 50 hours time in service after the effective date of this airworthiness directive
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Affected Aircraft
Aviat Aircraft Inc S-2A airplanes, Serial Numbers 2001 through 2059 certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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