SA4-958
Increase in capacity of each main fuel tank from 54 to 88 gallons. Held by Widgeonworks LLC, which holds 22 approved modifications in all. Last revised April 9, 2026. System: fuel system.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Gulfstream American Corporation; Gulfstream American Corporation; Gulfstream American Corporation
- Models
- G-44, G-44A, SCAN Type 30
- 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 20, 2026.