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

SA4-60

Landing gear modification. Held by Gander Aircraft CORP, which holds 6 approved modifications in all. Last revised September 9, 1999. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
Gulfstream Aerospace Corporation; Gulfstream Aerospace Corporation; Gulfstream Aerospace Corporation
Models
Scan Type 30, G-44A, G-44 Series
Type certificates
A-734, A-734, A-734
On this site
Grumman SCAN TYPE 30 8 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.