SA01438AT
Restores aircraft from restricted category to normal category by removing agricultural spray equipment and adds propeller models as listed in FAA approved Supplemental Flight Manual. Held by Stilley John D. Last revised July 25, 1997. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Waco Aircraft Company
- Models
- DSO
- Type certificate
- ATC 42 Page 429
- On this site
- Waco DSO 7 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 22, 2026.