SA135CE
Installation of Lycoming O-320-A1A, A1B, A3A, A3B or Lycoming O-320-B1A, B1B, B3A, B3B engine, Hartzell HC-82X or HC-A2X series propellers with 7636D-4 blades and Woodward Model 210080 Governor. Data required: Doyn drawing 2000 dated February 21, 1063 and Doyn installation instructions dated February 21, 1963. Held by D'Shannon Products LTD., which holds 118 approved modifications in all. Last revised July 14, 2011. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 170, 170A, 170B
- Type certificates
- A-799, A-799, A-799
- On this site
- Cessna 170 2,085 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.