SA4-504
Swing-out type engine mount, carburetor air heat, engine cowl, oil cooler, carburetor air scoop, and fabrication and installation of oil tank. Held by Skyhaven INC, which holds 4 approved modifications in all. Last revised June 8, 2006. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Consolidated Vultee Aircraft Corporation Stinson Division
- Models
- SR-10F (Army UC-81F)
- Type certificate
- 685
- On this site
- Stinson SR-10 17 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.