SA8989SW
Installation of Teledyne Continental Motors TSIO-520-NB engines as modified per STC SE4327SW and McCauley model No. AF32C515/NLA-4.0 to 5.5 propellers. Held by Ram Aircraft Limited Partnership, which holds 174 approved modifications in all. Last revised October 8, 2001. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 340, 340A
- Type certificates
- 3A25, 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 19, 2026.