SA526SO
Installation of the Pratt & Whitney PT6A-28 engines. Held by Delta Aviation, INC, which holds 3 approved modifications in all. Last revised November 21, 1973. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation
- Models
- 65-90, 65-A90, B90
- Type certificates
- 3A20, 3A20, 3A20
- On this site
- Beechcraft 65 201 registered
Beechcraft B90 29 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 23, 2026.