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

SB04100CH

Replace the Balony Kubicek Basket/Burner system and fuel tanks with the FireFly (Balloon Works) Basket Model 5.0, S/N 6133; the FireFly (Balloon Works) Burner Model F-1 (S/N 416-417); and FireFly (Balloon Works) fuel tanks, S/Ns 97987J, 104920J, 91050J, 98052J, 101672J, and 98049J. Held by Curtis Godlevsky. Last revised June 22, 2016. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Balony Kubicek spol s.r.o.
Models
BB40Z
Type certificate
B04CE
On this site
Balony Kubicek Spol Sro BB40 7 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 21, 2026.