STC Holder: Supreme Aircraft Service

The Aviation DataBase -- STC Selection System
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No. of STCs: 3

STC Holder: Supreme Aircraft Service Address: Box 82, Elmhurst, IL 60126, United States		Contact us to have your company added here!
STC No.: SA3-20	Status: Current	App Date:	Rev Date: 01/01/1960
TC Nos.: A-757,
Models: Raytheon Aircraft Company: C18 Series
ACO: AIR-760: Central Certification Branch CHI
Warren McArthur seats 297 and and 297D (new designation297-ST) modified.

STC Holder: Supreme Aircraft Service Address: Box 82, Elmhurst, IL 60126, United States		Contact us to have your company added here!
STC No.: SA3-21	Status: Current	App Date:	Rev Date: 01/01/1960
TC Nos.: A-757,
Models: Raytheon Aircraft Company: C18 Series
ACO: AIR-760: Central Certification Branch CHI
Hardman 1200N seats (new designation 1200N-ST1) modified.

STC Holder: Supreme Aircraft Service Address: Joliet Municipal Airport, Joliet, IL 60431, United States		Contact us to have your company added here!
STC No.: SA3-69	Status: Current	App Date: 06/27/1957	Rev Date: 07/25/1957
TC Nos.: 1A6,
Models: Piper Aircraft Inc.: PA-22-108
ACO: AIR-760: Central Certification Branch CHI
Remove all deteriorated fabric from the upper surfaces of the wings except for 10" spanwise along the leading edge and 2" spanwise along the trailing edge. 1Apply fabric over the upper surface of the wings, as shown in the sketck on attaohed Form 337. PK screws are used to fasten the tabric to the ribs as on the original installation