SA1537NM
Installation of stamped wing ribs. Held by Univair Aircraft CORP, which holds 40 approved modifications in all. Last revised February 25, 1983. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Lavia Argentina S.A. (Laviasa); Lavia Argentina S.A. (Laviasa); Lavia Argentina S.A. (Laviasa)
- Models
- PA-25-235, PA-25-260, PA-25
- Type certificates
- 2A8, 2A8, 2A8
- On this site
- 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 7, 2026.