The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · amended

SA4094NM

Installation of Oilamatic engine preoiler. Held by Oilamatic INC, which holds 26 approved modifications in all. Last revised June 28, 1991. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; American Champion Aircraft Corp.; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.
Models
7GCAA, 7GCB, 7GCBC, 7KCAB, 8GCBC, 8KCAB, AT-6 (SNJ-2), AT-6A (SNJ-3), AT-6B, AT-6C (SNJ-4), AT-6D (SNJ-5), AT-6F (SNJ-6), BC-1A, SNJ-7, T-6G, 177, 177A, 177B, 177RG, 185, 185A, 185B, 185C, 185D, 185E, A185E, A185F, 35-33, 35-A33, 35-B33, 35-C33, 35-C33A, 36, A36, E33, E33A, E33C, F33, F33A, F33C, G33, H35, J35, K35, M35, N35, P35, S35, V35, V35A, V35B, PA-18-150, PA-18A-150, PA-18AS-150, PA-18S-150, PA-28-140, PA-28-150, PA-28-151, PA-28-160, PA-28-161, PA-28-180, PA-28-181, PA-28-235, PA-28-236
Type certificates
A-759, A-759, A-759, A-759, A21CE, A21CE, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A-2-575, A13CE, A13CE, A13CE, A20CE, 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 3A15, 1A2, 1A2, 1A2, 1A2, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13
On this site
American Champion Aircraft 7 Citabria and Champ 429 registered
American Champion Aircraft 8 Decathlon and Scout 668 registered
Beechcraft 35 Bonanza and Debonair 1,077 registered
Beechcraft 36 Bonanza 111 registered
Beechcraft A36 Bonanza 2,530 registered
Beechcraft E33 135 registered
Beechcraft F33 Bonanza 1,008 registered
Beechcraft G33 41 registered
Beechcraft H35 224 registered
Beechcraft J35 221 registered
Beechcraft K35 Bonanza 236 registered
Beechcraft M35 225 registered
Beechcraft N35 167 registered
Beechcraft P35 319 registered
Beechcraft S35 Bonanza 459 registered
Beechcraft V35 Bonanza 1,661 registered
Cessna 177 Cardinal 2,158 registered
Cessna 185 Skywagon 227 registered
Cessna A185 Skywagon 1,372 registered
North American AT-6 Texan 228 registered
Piper PA-18 Super Cub 3,621 registered
Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,619 registered
The FAA's record
On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 5, 2026.