SA03618AT
Installation of Teledyne Continental Motors Model IO-550-N engines, Hartzell Model PHC-G3YF-2UF/F7663D-2R propeller front, Hartzell Model PHC-I3YF-2AL/FLC7663DF-2 propeller rear, front and back AirScan engine installations and 5120 pounds Maximum Gross Weight. Held by Airscan INC, which holds 3 approved modifications in all. Last revised February 13, 2009. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 337G, 337H, T337H
- Type certificates
- A6CE, A6CE, A6CE
- On this site
- Cessna 337 Skymaster 370 registered
Cessna T337 193 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 29, 2026.