AD 85-15-01 R2
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | SA-365C | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (AEROSPATIALE): Model SA 365 Series Helicopters |
| aircraft | Airbus Helicopters | SA-365C1 | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (AEROSPATIALE): Model SA 365 Series Helicopters |
| aircraft | Airbus Helicopters | SA-365C2 | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (AEROSPATIALE): Model SA 365 Series Helicopters |
| aircraft | Airbus Helicopters | SA-365N | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (AEROSPATIALE): Model SA 365 Series Helicopters |
Unsafe Condition
Failure of the main rotor mast due to cracks or corrosion.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the main rotor mast in accordance with specified service bulletins, replace any cracked mast, and conduct repetitive inspections at intervals not exceeding 300 hours. Visually inspect the upper mast flange-to-shaft radius every 50 hours.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours or before reaching 300 hours time in service, depending on mast time in service. For helicopters with severe tracking defects, before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Aerospatiale Model SA 365 series helicopters equipped with main rotor masts having Part Numbers 365A31-1060-23, -25, 365A31-1179-03, -20, or -21.
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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