SA4307NM
Installation of Hartzell (see STC) propellers and increase in maximum continuous power to 300 HP for existing Lycoming IO-540-K1F5, -K1J5 engines installed on the Model 600 and IO-540-S1A5 engine installed on the 601 and 601P models. Held by Machen INC, which holds 43 approved modifications in all. Last revised November 1, 1998. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Aerostar Aircraft Corporation; Aerostar Aircraft Corporation; Aerostar Aircraft Corporation
- Models
- PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P)
- Type certificates
- A17WE, A17WE, A17WE
- On this site
- Piper PA-60 Aerostar 57 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 19, 2026.