EASA SIB NE-11-54: Continental Motors (formerly TCM) Engines - Propeller Strikes and Hydraulic Locks

What to do

Owners, operators, and maintenance personnel should follow the inspection procedures outlined in Continental Motors Service Bulletin SB96-11B and the applicable engine overhaul manual after any propeller strike or hydraulic lock incident. These inspections must be completed before returning the engine to service. No specific compliance deadline is provided, but timely action is recommended to ensure safety.

Summary

The Special Airworthiness Information Bulletin SAIB NE-11-54 is an FAA advisory regarding Continental Motors (formerly Teledyne Continental Motors) direct drive and geared reciprocating engines. It addresses recommended inspections following propeller strikes or hydraulic lock incidents to ensure engine safety and reliability. This bulletin is informational and does not mandate regulatory action under 14 CFR part 39.

What changed

SAIB NE-11-54 introduces recommended inspection procedures after propeller strikes or hydraulic lock events on Continental Motors engines. It highlights findings from an incident involving a Cessna 421 and emphasizes the importance of proper engine disassembly and inspection before returning the engine to service. No new mandatory regulations or airworthiness directives are issued.

Why it matters

This bulletin is important for aviation professionals because it raises awareness of potential engine damage after propeller strikes or hydraulic locks, which can lead to engine failure if not properly addressed. Operators, maintenance organizations, and compliance teams benefit by understanding the need for thorough inspections to maintain engine airworthiness and prevent accidents. It helps ensure continued safe operation of aircraft equipped with Continental Motors engines.