AD 83-19-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | AS355E | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model 355 Series Helicopters |
| aircraft | Airbus Helicopters | AS355F | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model 355 Series Helicopters |
Unsafe Condition
Failure of the splined flange (P/N 355A34-1062-20) could result in possible loss of tail rotor drive.
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Required Actions
Within 50 hours time in service after the effective date, inspect the splined flange per SNIAS Maintenance Manual Section 65.10.00.602, paragraph 2. Repeat inspections every 100 hours until replaced with new P/N 355A34-1078-20. Equivalent methods require FAA approval.
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Compliance Time
within the next 50 hours time in service after the effective date of this AD
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Affected Aircraft
SNIAS Model 355 series helicopters with splined flange P/N 355A34-1062-20 attached to the forward end of the oil cooler fan wheel
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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