SA2997SO
Installation of McCauley propeller governor. Held by Mike Jones Aircraft Sales INC., which holds 19 approved modifications in all. Last revised February 10, 2011. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation
- Models
- 58, 95-55, 95-A55, 95-B55, 95-C55, D55, E55
- Type certificates
- 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16
- On this site
- Beechcraft 58 Baron 1,295 registered
Beechcraft 95 Travel Air and Baron 55 1,245 registered
Beechcraft D55 119 registered
Beechcraft E-55 215 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 12, 2026.