AD 84-01-03 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | SA.315B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Models SA315, SE3160, SA316, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SA.316B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Models SA315, SE3160, SA316, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SA.316C Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Models SA315, SE3160, SA316, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SA.319B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Models SA315, SE3160, SA316, and SA319 Series Helicopters |
| aircraft | Airbus Helicopters | SE.3160 Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Models SA315, SE3160, SA316, and SA319 Series Helicopters |
Unsafe Condition
Fatigue cracks in either lower eye end-fitting of the main gearbox 'A' frame support assemblies, which could lead to in-flight failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Comply with specific service bulletins within 50 hours' time in service after the AD's effective date. SA315 series must follow Service Bulletin No. 01.18, Revision A; SE3160, SA316, and SA319 series must follow SB No. 01.49, Revision 1. These bulletins establish service life limits and restrict repair eye end-fitting replacements.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 50 hours' time in service after the effective date of this AD amendment
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Models SA315, SE3160, SA316, and SA319 series helicopters equipped with main gearbox 'A' frame support assemblies with part numbers 315A21.04.000, 315A21.05.000, 3160S22.04.000 and 000.1, or 3160S22.05.000 and 000.1.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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