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No. of STCs: 2

STC Holder: CRMA6, Rue Marceau Issy-les-Moulineaux, Seine, Unknown, France		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE41N	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Increase in compression ratio to 6.75:1, substitution of 12:1 impeller ratio and other modifications to R-1340 engines, equivalent to S1H2, S3H1 and S3H2(not equipped with reduction gear).
TC Nos.: 5E-2, E-129, E-143
Models: Pratt & Whitney DivisionR-1340 Series, Wasp S1H2, Wasp S3H1, Wasp S3H2
ACO: AIR-778: Alaska Aviation Section ANC

STC Holder: CRMA6, Rue Marceau Issy-les-Moulineaux, Seine, Unknown, France		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE41N	Status: Historical	App Date:	Rev Date:
Description: Increase in compression ratio to6.75:1, substitution of 12:1 impeller ratio and other modifications to R-1340 engines, equivalent to S1H2, S3H1 and S3H2(not equipped with reduction gear).
TC Nos.: 5E-2, E-129, E-143
Models: Pratt & Whitney DivisionR-1340 Series, Wasp S1H2, Wasp S3H1, Wasp S3H2
ACO: Foreign