airworthiness · Rule · Final rule. · Published 2020-09-02 · Effective 2020-10-07 · 85 FR 54481
Document
Document number
2020-19299
Federal Register citation
85 FR 54481
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Pratt & Whitney Canada Corp. Turboshaft
Publication date
2020-09-02
Effective date
2020-10-07
FAA docket
Docket No. FAA-2020-0471
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Pratt & Whitney Canada Corp. (P&WC) PT6B-37A model turboshaft engines with engine serial number PCE-PU0289 and earlier. This AD was prompted by a report of contamination from galvanic corrosion between the fuel control unit (FCU) aluminum body and the steel union fitting causing the loss of engine control, resulting in an engine over-speed condition and subsequent in-flight shutdown (IFSD). This AD requires replacing the FCU with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.