SA2739SW
Installation of electric blast valve. Held by John Terry, which holds 6 approved modifications in all. Last revised July 30, 1997. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Conn Sidney; Conn Sidney; Conn Sidney; Conn Sidney
- Models
- Firefly 6, Firefly 6B, Firefly 7, Firefly 8-24
- Type certificates
- A14SO, A14SO, A14SO, A14SO
- On this site
- Balloon Works FIREFLY 6 18 registered
Balloon Works FIREFLY 8 183 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 7, 2026.