Service Instruction No. 1533 C

Approved Fuel Pump

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Supersedes Service Instruction No. 1533B

September 3, 2015

MODELS AFFECTED

All Lycoming reciprocating aircraft engines

TIME OF COMPLIANCE

As Required for Replacement

REASON FOR REVISION

Changed two supplier part numbers

This Service Instruction is to inform owners and operators of a change to the part numbers for fuel pumps. The succeeding part numbers have been manufactured to be equivalent to the previous part numbers and are interchangeable with the previous part numbers. Table 1 identifies the previous fuel pump part numbers for both Lycoming and the supplier and the successive Lycoming part number and supplier part number.

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