SA02282AK
Installation of Lycoming Engine Models IO-360-A1A, -A1B, -A1B6, -M1A, or -M1B; Hartzell propeller models HC-C2YR-1BF/F7666A()/F8477(), HC-C2YR-1N/NG8301(), or MT-Propeller Model MTV-15-() and associated modified powerplant components. Held by Stoots Aviation David S. Stoots, which holds 2 approved modifications in all. Last revised December 14, 2015. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.
- Models
- 170A, 170B, 172, 172A, 172B, 172C, 172D, 172E, 172F (USAF T-41A), 172G, 172H (USAF T-41A), 175, 175A, 175B, 175C
- Type certificates
- A-799, A-799, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A12, 3A17, 3A17, 3A17, 3A17
- On this site
- Cessna 172 Skyhawk 20,675 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.