AD 2003-18-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Wytwornia | Sprzetu Komunikacyjnego (WSK) PZL-10W Turboshaft | Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-10W Turboshaft Engines |
Unsafe Condition
Loose or improperly crimped engine-to-gearbox pin joint retaining nuts and damaged bolts found during overhaul, which could result in loss of nut torque and loosening of retaining nuts, leading to misalignment of the engine to the gearbox, causing loss of drive to the gearbox, power turbine overspeed, and uncontained power turbine disc failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the four engine-to-gearbox pin retaining joints for loose or improperly crimped retaining nuts and damaged bolts. Replace loosened or improperly crimped nuts, damaged bolts, and washers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight after the effective date of this AD, unless the actions have already been done.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-10W turboshaft engines listed by serial number in WSK Obligatory Service Bulletin (OSB) No. E-19W096/2000 (original issue--2000). These engines are installed on, but not limited to, PZL-SOKOL helicopters.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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