Service Information Letters

AFS-SIL-01
ISSUED: June 10, 2019 REVISION: 1
LFC-10AD2 AV2581500 Servo Installed on Lycoming IO-390 Engines being operated primarily at high density altitude airports

AFS-SIL-02
ISSUED: November 13, 2020 REVISION: ORIGINAL
This Service Instruction applies to all AVStar manufactured servos (LFR-NNSS5, LFR-NNLS10 and other models) fitted with Fuel Inlet Strainers manufactured by AVStar. The Fuel Inlet Strainer part numbers are AV2537608 & AV2537610.

AFS-SIL-03
ISSUED: February 1, 2022 REVISION: ORIGINAL
This Service Instruction applies to all AVStar manufactured carburetors LVC-3-3A, LVC-3-3PA, LVC-5-4PA, LVC-5-5BPA, LVC-5-5PA, LHC-6-6BPA & LHC-6-6BA. This service information letter provides information for setting up the proper idle mixture rise and serves as a supplement to the instructions in the Engine Operating Manual.