EASA SIB NE-14-15
Hartzell Propellers — Corrosion of Guide Rods
Summary
Special Airworthiness Information Bulletin SAIB: NE-14-15 is an FAA informational bulletin addressing corrosion issues in guide rods of certain Hartzell Propeller, Inc. models identified by specific serial and part numbers, including part number A-717. The corrosion may impair propeller pitch adjustment, particularly affecting the ability to feather the propeller, which is critical during engine shutdown scenarios. This bulletin does not mandate regulatory action but provides important safety information for operators and maintenance personnel.
What Changed
SAIB NE-14-15 introduces awareness of corrosion found on Hartzell Propeller guide rods, specifically part number A-717, which can cause binding and prevent proper pitch adjustment. It does not impose new regulatory requirements but recommends following Hartzell Propeller Alert Service Bulletin HC-ASB-61-351 for inspection and removal of affected parts.
Why It Matters
This information is crucial for aviation professionals because corrosion on guide rods can lead to failure to feather the propeller in flight, potentially reducing aircraft performance and safety, especially during engine shutdowns on takeoff. Operators and maintenance organizations need to be aware of this issue to prevent in-flight emergencies and ensure continued airworthiness.
What To Do
Affected operators and maintenance facilities should review and comply with the instructions in Hartzell Propeller Alert Service Bulletin HC-ASB-61-351 to inspect and remove corroded guide rods. There is no mandatory compliance deadline, but timely action is recommended to mitigate safety risks.