SA655SW
Lycoming IGSO-480-A1A6 engines, modifications to wing, vertical tail, landing gear, and control system. Held by Cross Roads Aviation INC. Last revised June 6, 1966. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation
- Models
- B50, C50, D50
- Type certificates
- 5A4, 5A4, 5A4
- On this site
- Beechcraft B50 13 registered
Beechcraft C-50 20 registered
Beechcraft D-50 65 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 20, 2026.