SA803SO
Installation of a Lycoming O-360-A1A engine, equipped with either a McCauley Model 2D34C53-A/74E-0 propeller or a Hartzell Model HC-C2YK-1BF/F7666A-2 propeller. Held by Swift Museum Foundation INC, which holds 7 approved modifications in all. Last revised September 5, 2018. 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.