EASA SIB CASA-2016-01
Pratt &Whitney Canada PT6A-64 and -66D Engines — Oil Discoloration associated with Carbon Particles
Summary
The document titled Pratt &Whitney Canada PT6A-64 and -66D Engines — Oil Discoloration associated with Carbon Particles is a Civil Aviation Safety Alert (CASA) issued by Transport Canada. It addresses the issue of oil discoloration caused by carbon particle contamination in Pratt & Whitney Canada PT6A-64 and PT6A-66D engines. The alert highlights operational risks such as oil pressure fluctuations, filter clogging, and high oil temperatures linked to this contamination.
What Changed
This CASA introduces awareness of carbon contamination in the oil systems of PT6A-64 and PT6A-66D engines and references related Pratt & Whitney Canada Service Information Letters and Service Bulletins that provide maintenance guidance. It also announces a commercial support program from Pratt & Whitney Canada to assist operators in complying with these service bulletins.
Why It Matters
This alert is critical for aviation professionals because carbon contamination can lead to significant engine operational issues, potentially affecting safety and reliability. Operators, maintainers, and compliance teams need to monitor engine oil condition closely and follow updated maintenance procedures to prevent engine damage and ensure continued airworthiness.
What To Do
Owners, operators, and maintainers of PT6A-64 and PT6A-66D engines should review Pratt & Whitney Canada SIL No. PT6A-209 and the latest maintenance manuals for approved oils and maintenance recommendations. They should also utilize the commercial support program offered by Pratt & Whitney Canada to address the issue. No specific compliance deadlines are stated, but adherence to current maintenance guidance is emphasized.