Service Bulletin No. 245 D
Dynamic Counterweight System Detuning
April 10, 1987
GO-435, GO-480, IGO-480. GSO-480, IGSO-480. IGO-540, IGSO-540, VO-540. TIGO-541.
TIME OF COMPLIANCE:
At all times during engine operation including ground running.
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Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience more airtime and less downtime.