Airworthiness Directives: Pratt and Whitney Canada Corp. Engines

What it does

• •Proposes a new airworthiness directive (AD) requiring operators of Pratt & Whitney Canada Model PW814GA and PW815GA engines to update their airworthiness limitations sections and maintenance/inspection programs to incorporate new or more restrictive life-limited parts thresholds and intervals.
• •Incorporates Transport Canada AD CF-2025-71 by reference, making compliance with that Canadian directive a requirement for FAA-regulated operators.
• •Supersedes earlier requirements from Transport Canada AD CF-2023-73 with updated engine component limits.

Why it matters

• •Certain engine components no longer meet previously published cyclic limits and inspection intervals; the unsafe condition, if unaddressed, could result in engine damage and airplane damage.
• •Aligns U.S. regulatory requirements with Canadian aviation authority findings regarding the same engine models to ensure consistent safety standards.
• •Estimated compliance cost is approximately $28,305 total across 333 affected engines in U.S. registry, primarily administrative labor for updating maintenance documentation.

Who is affected

• •Operators and owners of aircraft with Pratt & Whitney Canada Model PW814GA and PW815GA engines installed (approximately 333 engines on U.S.-registered aircraft).
• •Maintenance and inspection program administrators responsible for updating approved airworthiness limitations manuals and instructions for continued airworthiness.

What happens next

The FAA is accepting public comments until December 28, 2026, through regulations.gov or by mail/fax to the addresses specified, after which it will consider comments and may revise the proposal before issuing a final rule.