SA4-553
Gross weight increased to 9,000 pounds and maximum continuous power increased to 450 hp. Held by Aerospace Products, INC, which holds 37 approved modifications in all. Last revised January 9, 1975. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company
- Models
- C-45G, C-45H, TC-45H, D18S, TC-45G
- Type certificates
- A-765, A-765, A-765, A-765, A-765
- On this site
- Beechcraft TC-45 7 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 21, 2026.