Service Instruction No. 1533E

Approved Rotary Vane Fuel Pumps

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Supersedes Service Instruction No. 1533 D

April 7, 2022

MODELS AFFECTED

All Lycoming reciprocating aircraft engines using rotary-style fuel pumps

TIME OF COMPLIANCE

As Required for Replacement

REASON FOR REVISION

Added 62E28152 fuel pump to Table 1

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