AD 88-12-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | SA 3180-Alouette Astazou | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B Helicopters |
| aircraft | Airbus Helicopters | SA 318B-Alouette Astazou | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B Helicopters |
| aircraft | Airbus Helicopters | SA 318C-Alouette Astazou | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B Helicopters |
| aircraft | Airbus Helicopters | SA.315B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B Helicopters |
| aircraft | Airbus Helicopters | SA.316B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B Helicopters |
| aircraft | Airbus Helicopters | SA.316C Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B Helicopters |
| aircraft | Airbus Helicopters | SA.319B Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B Helicopters |
| aircraft | Airbus Helicopters | SE.3160 Alouette III | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B Helicopters |
Unsafe Condition
Failures of the main drive shaft and freewheel assemblies due to improper operation of the main gearbox oil jet and inadequate sealing at the freewheel attachment joints.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within the next 100 hours time in service or upon observing a freewheel coupling and seal oil leak, comply with applicable Service Bulletin (Alouette SB 65-81 or Lama SB 65-06). After the first flight post-main gearbox installation/overhaul, and every 100 hours time in service thereafter, comply with section 1(c) of applicable Service Bulletin (Alouette SB 05-65 or Lama SB 05-14).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 100 hours time in service or upon observance of a freewheel coupling and seal oil leak, whichever is earlier
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
SNIAS Alouette/Lama Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B helicopters equipped with main gearbox P/N 3160S62-00-000 or P/N 319A62-00-000; freewheel P/N 3160S60-10-000; and clutch P/N 3160S63-20-000, P/N 3180S63-10-000, or P/N 319A63-00-000.
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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