SA2346SW-D
Option 1: Install Teledyne Continental Motors Model TSIO-520-J engines (310 horsepower). Option 2: Install Teledyne Continental Motors Model TSIO-520-N or NB engines (310 horsepower) and McCauley or Hartzell propellers. Option 3: Install Teledyne Continental Motors Model TSIO-520-NB engines modified by Supplemental Type Certificate number SE4327SW (325 horsepower) and McCauley or Hartzell propellers. Held by Ram Aircraft Limited Partnership, which holds 174 approved modifications in all. Last revised February 20, 2008. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company
- Models
- 340
- Type certificate
- 3A25
- On this site
- Cessna 340 707 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.