SA2661SO
Installation of Allison 250-B17C gas turbine engine, Edo Model 797-2500 amphibious floats, Hartzell Model HC-B3TF-7A/T10173F-11R or HC-B3TF-7AT10173F-11R propellers. Held by Maule Aerospace Technologies, INC, which holds 2 approved modifications in all. Last revised March 8, 1995. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Maule Aerospace Technology Inc.; Maule Aerospace Technology Inc.
- Models
- M-7-235, M-7-235A
- Type certificates
- 3A23, 3A23
- On this site
- Maule M-7 275 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.