Airworthiness Directive 03-22620
one-timeAirworthiness Directives; Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-10W Turboshaft Engines
What this AD requires
The FAA is adopting a new airworthiness directive (AD) for Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-10W turboshaft engines. This AD requires a one-time inspection of the four engine-to-gearbox pin retaining joints for loose or improperly crimped retaining nuts and damaged bolts on certain serial number engines. This AD is prompted by reports of loose or improperly crimped engine-to-gearbox pin joint retaining nuts found during overhaul. We are issuing this AD to prevent loss of nut torque and loosening of engine-to-gearbox pin joint retaining nuts, which could result in misalignment of the engine to the gearbox, causing loss of drive to the gearbox, power turbine overspeed, and uncontained power turbine disc failure.
Which aircraft AD 03-22620 applies to
Applies only to PZL-10W engines listed by serial number in WSK Obligatory Service Bulletin (OSB) No. E-19W096/2000 (original issue, 2000); specific serial numbers not included in this excerpt. Installed on, but not limited to, PZL-SOKOL helicopters.
Whether AD 03-22620 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.