SA01659SE
Installation of a Franklin 6A-350-C1 engine and McCauley 2A34C201/90DA-14 propeller, composite engine cowling and associated components. Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Swift Museum model GC-1B aircraft, Serial Number 2237, Registration Number N78237 only. Held by Means Howard. Last revised March 31, 2006. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Swift Museum Foundation Inc.
- Models
- GC-1B
- Type certificate
- A-766
- 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.