AD 2006-21-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | Turmo IV A and IV C Series | Airworthiness Directives; Turbomeca Turmo IV A and IV C Series Turboshaft Engines |
Unsafe Condition
Deterioration of flexible lubrication pipes, part number (P/N) 0 249 92 813 0 or P/N 0 249 92 916 0, leading to oil leakage.
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Required Actions
Identify the curing batch of flexible lubrication pipes. Replace one affected pipe before further flight if both engines on the same helicopter have an affected pipe. Perform initial and repetitive borescope inspections of flexible lubrication pipes and visual inspections of the oil filter on engines not requiring pipe replacement.
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Compliance Time
Before further flight
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Affected Aircraft
Turbomeca Turmo IV A and IV C series turboshaft engines with flexible lubrication pipes, P/N 0 249 92 813 0 or P/N 0 249 92 916 0, installed. These engines are installed on but not limited to, Aerospatiale SA 330--PUMA helicopters.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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