SA777CE
Installation of Lycoming 180 hp engine and a Hartzell HC-C2YK-1A/766A-2 propeller. Held by Robert L & Barbara V Willia,S. Last revised January 19, 1982. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
- Models
- P172D, 175A, 175B, R172E (USAF T-41B), 175, 175C
- Type certificates
- 3A17, 3A17, 3A17, 3A17, 3A17, 3A17
- On this site
- Cessna 175 Skylark 925 registered
Cessna P172 23 registered
Cessna R172 Hawk XP 758 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 20, 2026.