Airworthiness directives › 2003-18-04
AD 2003-18-04 Airworthiness Directives; Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-10W Turboshaft Engines
Applicability*9
This AD applies to Wytwornia Sprzetu Komunikacyjnego (WSK) PZL-10W turboshaft engines listed by serial number in Wytwornia Sprzetu Komunikacyjnego Obligatory Service Bulletin (OSB) No. E-19W096/2000, (original issue—2000). These PZL-10W turboshaft engines are installed on, but not limited to PZL-SOKOL helicopters.
Compliance
You are responsible for having the actions required by this AD performed before further flight after the effective date of this AD, unless the actions have already been done. Inspection (f) Inspect the four engine-to-gearbox pin retaining joints for loose or improperly crimped retaining nuts and damaged bolts on the serial number engines listed in WSK Obligatory Service Bulletin (OSB) No. E-19W096/2000, (original issue—2000), and replace loosened or improperly crimped nuts, damaged bolts and washers. Use Chapter II of Accomplishment Instructions of OSB No. E-19W096/2000, (original issue—2000) to do these actions. Alternative Methods of
Unsafe condition
This AD was prompted by reports of loose or improperly crimped engine-to-gearbox pin joint retaining nuts and damaged bolts 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.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1