SA3243SO
Installation of a Teledyne Continental Motors model IO-550D engine, either a McCauley model B2A37C228/90RDA-4 or a Hartzell model HC-C3YF-1RF/F9587C-15S propeller and other minor changes. Held by Davis Aviation Services INC, which holds 11 approved modifications in all. Last revised April 2, 1998. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
- Models
- A188, A188A, A188B
- Type certificates
- A9CE, A9CE, A9CE
- On this site
- Cessna A188 251 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.