SA2857SW
Leading edge cuffs, stall fences, aileron seals, wing tips. Held by Williams Robert, which holds 9 approved modifications in all. Last revised June 6, 1980. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
- Models
- 305E, 305B (Military T0-1D; 0-1D; 0-1F), 305A (USAF 0-1A), 305D (USAF 0-1G), 305F, 305C (USAF 0-1E)
- Type certificates
- 3A14, 3A14, 5A5, 5A5, 5A5, 5A5
- On this site
- Cessna/Air Repair Inc 305 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.