Supersedes Service Bulletin No. 564
August 22, 2008
Lycoming AEIO360A1B6, A1E, H1B model engines listed below in Table.
TIME OF COMPLIANCE
Prior to any inverted flight but no later than next scheduled oil change (50 hours of engine operation).
The incorrect oil suction screen may have been installed in the aerobatic engines listed below. This will result in the plug installed in the oil suction pickup to become loose, resulting in a loss of oil pressure during inverted flight.
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