SA512SW
Installation of metal ribs and metal covering of wings. Held by Martin Slone, which holds 5 approved modifications in all. Last revised August 23, 2016. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Lavia Argentina S.A. (Laviasa); Lavia Argentina S.A. (Laviasa); Piper Aircraft Inc.
- Models
- PA-25-235, PA-25, PA-18A (Restricted)
- Type certificates
- 2A10, 2A10, AR-7
- On this site
- Piper PA-18 Super Cub 3,621 registered
Piper PA-25 Pawnee 455 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 5, 2026.