AD 2021-15-12
Effective 09/09/2021 · Published 08/05/2021
Airworthiness Directives; Pratt & Whitney Canada Corp. Turboshaft Engines
Summary
The FAA is adopting a new airworthiness directive (AD) for all Pratt & Whitney Canada Corp. (P&WC) PW210A and PW210S model turboshaft engines. This AD was prompted by a report from the manufacturer that the Automated Damage Tracking System (ADTS) may under-count the number of cycles accrued by the impeller and the high-pressure compressor (HPC) rotor. This AD requires use of the manual low-cycle fatigue (LCF) counti…