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

SA4166WE

Installation of oxygen system for passengers and third crew member. Held by Tiger Air Svc Center, INC, which holds 46 approved modifications in all. Last revised June 12, 1980. System: emergency equipment.

What it applies to

Kind of product
Aircraft
Design holder
Gulfstream Aerospace Corporation
Models
G-1159
Type certificate
A12EA
On this site
Gulfstream G-1159 Gulfstream II and III 42 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.