AD 78-21-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | SA330F | Airworthiness Directives; Societe Nationale Industrielle Aerospatiale (SNIAS): Model SA 330 Puma Helicopters |
| aircraft | Airbus Helicopters | SA330G | Airworthiness Directives; Societe Nationale Industrielle Aerospatiale (SNIAS): Model SA 330 Puma Helicopters |
| aircraft | Airbus Helicopters | SA330J | Airworthiness Directives; Societe Nationale Industrielle Aerospatiale (SNIAS): Model SA 330 Puma Helicopters |
Unsafe Condition
Failure of the yaw control bellcrank, P/N 330A.77.4011.01, due to cracks in the tubular section.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the tubular section of the yaw control bellcrank for cracks within 25 hours time in service after the effective date or prior to 1200 hours total time in service, whichever occurs later. Replace cracked bellcranks with serviceable parts of the same part number. Continue daily inspections after each flight if unmodified, until modified per Service Bulletin No. 67.10.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 25 hours time in service after the effective date of this AD, or prior to the accumulation of 1200 hours total time in service, whichever occurs later
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Societe Nationale Industrielle Aerospatiale (SNIAS) Model SA 330 Puma helicopters, serial numbers 1504 and below, with yaw control bellcranks P/N 330A.77.4011.01 modified per AMS 07.10.226 but not AMS 07.11.890.
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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