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AWB 85-024 Issue 1 - Piston Engine Exhaust Valve and Valve Guide Distress

Published date: 
2 August 2018
Effective date: 
2 August 2018

This AWB is issued to advise owners, registered operators, pilots, maintenance organisations and Licensed Aircraft Maintenance Engineers of the increasing incidence of premature exhaust valve and valve guide wear, due to elevated combustion temperatures that will lead to degraded engine performance.

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