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

SB5WE

Installation of position lights on hot air balloon Model S55A, Serial number 138 ONLY. Limited to installation on this serial number 138 ONLY. Held by Thornton Ronald D., which holds 2 approved modifications in all. Last revised September 29, 1978. System: electrical power.

What it applies to

Kind of product
Aircraft
Design holder
Aerostar International
Models
S-55A
Type certificate
A15CE
On this site
Aerostar International Inc S-55 13 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 20, 2026.