AD 2007-18-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Societe de Motorisations Aeronautiques (SMA) SR305-230 and SR305-230-1 Reciprocating Engines |
Unsafe Condition
Cracks on the exhaust collector assembly, particularly near the weld of the Turbine Inlet Temperature (TIT) probe support, can lead to failure of the engine primary exhaust, resulting in loss of engine manifold pressure and engine power.
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Required Actions
Visually inspect the exhaust collector assembly in the area of the TIT probe mount weld for cracks within 30 hours time-since-new (TSN). Replace cracked exhaust collector assemblies with a serviceable part before further flight. Repeat inspections within 10 hours time-since-last inspection (TSLI). Replace the exhaust collector assembly with a serviceable part within 50 hours TSN. Continue to inspect and replace exhaust collector assemblies as specified.
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Compliance Time
Within 30 hours time-since-new (TSN) for initial inspection; before further flight for replacement of cracked parts; within 10 hours TSLI for repetitive inspections; within 50 hours TSN for replacement of the exhaust collector assembly.
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Affected Aircraft
Societe de Motorisations Aeronautiques (SMA) SR305-230 and SR305-230-1 reciprocating engines with exhaust collector assembly part number SF01080014-0, installed on, but not limited to, Cessna 182 series airplanes modified to supplemental type certificate AS03302AT.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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