AD 87-21-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | AS332C | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model AS 332C and L Helicopters |
| aircraft | Airbus Helicopters | AS332L | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model AS 332C and L Helicopters |
| aircraft | Airbus Helicopters | AS332L1 | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model AS 332C and L Helicopters |
| aircraft | Airbus Helicopters | AS332L2 | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model AS 332C and L Helicopters |
Unsafe Condition
Loss of the AC electrical generation system due to insufficient insulation values in the electrical cable bundles connecting each AC generator to its regulating card.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the electrical cable bundles connecting each AC generator to its regulating card within the next 50 hours' time in service or 30 days after the effective date. If insulation values are less than 2 megohms, modify the installation per Aerospatiale Service Bulletin No. 24.10. Modify the aircraft within 400 hours' time in service following inspection or before December 31, 1987, whichever comes first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 50 hours' time in service or the next 30 days after the effective date of this AD for inspection; within 400 hours' time in service following inspection or before December 31, 1987, whichever occurs first, for modification.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE Model AS 332C and L helicopters certificated in all categories.
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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