The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · issued

SB03097CH

Replace the Balony Kubicek Basket/Burner system and fuel tanks with the FireFly (Balloon Works) Basket Model 4.9A1, S/N 546-5; the FireFly (Balloon Works) Burner Model F1, S/N 905; and FireFly (Balloon Works) fuel tanks, P/N 3035, S/Ns 158410, 15354, and 15400, and/or FireFly (Balloon Works) fuel tanks, P/N 3229, S/N 158051. Held by Brad Craig, which holds 6 approved modifications in all. Last revised May 8, 2012. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Balony Kubicek spol s.r.o.
Models
BB20XR
Type certificate
B04CE
On this site
Balony Kubicek Spol Sro BB20 9 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.