SA217RM
Installation of Lycoming O-360-A1A engine (150 hp.), Sensenich76EM8S10-0-56 propeller, revised engine mount and fuel system, dorsal fin, wing leading edge cuffs, wing fences, aileron gap closures and other changes. Held by Williams Robert Or Barbara, which holds 21 approved modifications in all. Last revised April 19, 1991. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 150K, 150L, 150M, 152, A150K, A150L, A150M, A152
- Type certificates
- 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19, 3A19
- On this site
- Cessna 150 7,995 registered
Cessna 152 1,637 registered
Cessna A150 232 registered
Cessna A152 48 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 8, 2026.