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No. of STCs: 2

STC Holder: Marlin and Myron Harms (No address provided), Unknown, NM REGION Unknown, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4-1404	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Vacuum system 121 and 121A. (Eligible only on engines with dampened crankshafts).
TC Nos.: 3A12, A-799
Models: The Cessna Aircraft Company170, 172 Series
ACO: AIR-770: West Certification Branch SEA

STC Holder: Marlin and Myron Harms (No address provided), Unknown, NM REGION Unknown, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4-1404	Status: Historical	App Date:	Rev Date:
Description: Vacuum system 121 and 121A. (Eligible only on engines with dampened crankshafts).
TC Nos.: 3A12, A-799
Models: The Cessna Aircraft Company170, 172 Series
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500