SA313NW
Installation of Franklin 6A-350-C1 or 6A-350-C2 engine, Hartzell HC-C2YF-1BF/ F8459-4 to -8 propeller, Hartzell HC-C2YF-1BF/F8459A-40 to -80, or McCauley 2A31C21/84S-4 to -8 propeller. Held by Franklin Aircraft Engines INC., which holds 18 approved modifications in all. Last revised November 19, 1999. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation
- Models
- 108-3, 108-2, 108-1
- Type certificates
- A-767, A-767, A-767
- 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.