MANDATORY INSPECTION AND COMPLIANCE UPON INITIAL REPLACEMENT OF THE X61-0007 ALTERNATOR CONTACTOR WITH THE X61-0029 ALTERNATOR CONTACTOR

Aircraft Afftected - Cessna 172R, 172S, 182S, 182T, T182T, 206H, and T206H Owners

SEB-24-01 transmits Lamar Technologies LLC Service Information Letter LSI-019 Revision A,
Replacement of MC01 Distribution Bus Bar and Lamar Technologies LLC Service Information Letter
LSI-021, Inspection of MC01 Distribution Bus Bar.

Lamar Technologies LLC Service Information Letter LSI-019 Revision A, Replacement of MC01
Distribution Bus Bar provides parts and instructions to remove and replace the distribution bus bar with
a new distribution bus bar. The new distribution bus bar provides adequate clearance between the
distribution bus bar and the case of the alternator contactor.

Lamar Technologies LLC Service Information Letter LSI-019 Revision A is for MC01 Master Control Units identified with an internal change I.C. 8 through I.C. 14.

Lamar Technologies LLC Service Information Letter LSI-021 applies to all I.C. 7 and to I.C. 1 through I.C.
6 Master Control Units that have accomplished Cessna Service Bulletin SB00-24-01 (Lamar Technologies
LLC Service Information Letter LSI-004).
SEB-24-01 accomplishes the necessary modification of master control units that were originally equipped
with a X61-0029 Contactor (I.C. 13 and I.C. 14) or with an X61-0029 Contactor installed as a replacement
part (I.C. 1 through I.C. 12).