SA02045AK-D
Fabrication and installation of Aero Twin, Inc Single Place Folding Seat P/N ATFS1-01W. Held by Aero Twin, INC, which holds 30 approved modifications in all. Last revised February 29, 1996. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 404, 406, 441
- Type certificates
- A25CE, A25CE, A28CE
- On this site
- Cessna 404 26 registered
Cessna 441 Conquest II 172 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 21, 2026.