SA2271CE
Installation of additional wing fuel tanks. Held by Hershey Flying Service INC, which holds 12 approved modifications in all. Last revised November 16, 2017. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.; Allied Ag Cat Productions Inc.
- Models
- G-164A, G-164B, G-164C, G-164D
- Type certificates
- 1A16, 1A16, 1A16, 1A16
- On this site
- Ag-Cat Corporation G-164 5 registered
Schweizer Aircraft Corp G-164 64 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.