Challenger Engine Alert: Oil Filter Analysis Interval
Due to problems with the Tower Shaft Bearing, this SB has been released to change the Oil Filter Analysis interval in Specific Identified Engines.
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Due to problems with the Tower Shaft Bearing, this SB has been released to change the Oil Filter Analysis interval in Specific Identified Engines.
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The P&W Service Bulletin 30382 introduces a seal between the turbine exhaust case and the turbine exhaust mixer assembly to keep hot exhaust gases from sensitive areas.
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Pratt & Whitney recently released SB30393, recommending that the Electronic Engine Control (EEC) support brackets be replaced within 300 hours to help eliminate problems due to vibratory stresses.
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Service Bulletin SB25353 allows the remaining PW306C operators to have the new carbon face seal put in their engines. Before installing the carbon face seal at the gear shaft location, the gear shaft must be replaced or modified by removing it from the gearbox
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