SA7441SW
Installation of Teledyne Continental 0-300-C, D, or E model engine and McCauley 1C-172 EM or Sensenich M74DC propeller. Held by International Cessna 170 Association, which holds 3 approved modifications in all. Last revised November 6, 2008. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 172, 170, 170A, 170B
- Type certificates
- 3A12, A-799, A-799, A-799
- On this site
- Cessna 170 2,085 registered
Cessna 172 Skyhawk 20,672 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 19, 2026.