SA01091AT
Manufacture of mechanical cowl flap control system. Held by Aviation Enterprises, which holds 16 approved modifications in all. Last revised February 20, 2001. System: flight controls.
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
- Models
- 336, 337 Series, T337 Series, P337H
- Type certificates
- A2CE, A6CE, A6CE, A6CE
- On this site
- Cessna 336 35 registered
Cessna 337 Skymaster 372 registered
Cessna P337 33 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 5, 2026.