SA01295LA
Installation of modified Pratt & Whitney R-1340 engine. This mod must be done concurrently with STC SE01200LA which modifies R-1340 engine. Held by Aircraft Cylinder & Turbine INC., which holds 2 approved modifications in all. Last revised July 23, 2003. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Air Tractor Inc.; Air Tractor Inc.; Air Tractor Inc.; Air Tractor Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.
- Models
- AT-301, AT-401, AT-401B, AT-501, G-164A, G-164B, 600 S-2D, S2R-R1340, S2R
- Type certificates
- A9SW, A17SW, A17SW, A17SW, 1A16, 1A16, A4SW, A4SW, A4SW
- On this site
- Ag-Cat Corporation G-164 5 registered
Air Tractor Inc AT-301 84 registered
Air Tractor Inc AT-401 68 registered
Ayres Corporation S-2 244 registered
Thrush Aircraft Inc S-2 102 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 8, 2026.