SA253GL
Installation of a Continental E-225-4 engine modified in accordance with STC SE23SW, in lieu of a Continental E-225-4 which was installed. Held by Deluca of California INC., which holds 11 approved modifications in all. Last revised January 16, 1992. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Navion Aircraft Company Ltd.; Navion Aircraft Company Ltd.
- Models
- Navion A (L-17C), Navion A (L-17B)
- Type certificates
- A-782, A-782
- 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 7, 2026.