AD 81-06-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | SA 318B-Alouette Astazou | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model SE313, SA315, SA316, SA318, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SA 318C-Alouette Astazou | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model SE313, SA315, SA316, SA318, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SA.315B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model SE313, SA315, SA316, SA318, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SA.316B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model SE313, SA315, SA316, SA318, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SA.316C Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model SE313, SA315, SA316, SA318, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SA.319B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model SE313, SA315, SA316, SA318, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SE 313B-Alouette II | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model SE313, SA315, SA316, SA318, and SA319 Series Helicopters |
Unsafe Condition
Fatigue cracks and failures of the forward transmission deck support and the flight control bellcrank support.
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Required Actions
Inspect for cracks and deformation on the lower side of transmission deck stringer using dye penetrant method per Aerospatiale Service Bulletins. Install two additional clamps P/N 55212.280BGZ if not already done. Repeat inspections every 400 hours' time in service or comply with paragraph (f).
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Compliance Time
Within the next 25 hours' time in service if the helicopter had 375 or more hours' time in service since new or overhaul on the effective date, or before the accumulation of 400 hours' time in service if less than 375 hours. Compliance required as indicated.
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Affected Aircraft
SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model SE313, SA315, SA316, SA318, and SA319 series helicopters without Aerospatiale Modification No. AM 2195.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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