SA4903NM
Installation of Continental TSIO-520-D engine and McCauley 3A32C76-S- M/82NM-2 propeller,derated to 260 hp and 2625 rpm. Held by Checksix Aerosolutions, LLC, which holds 14 approved modifications in all. Last revised July 27, 2023. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Textron Aviation Inc.
- Models
- P35
- Type certificate
- 3A15
- 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 20, 2026.