SA518NW
Installation of a Lycoming engine, McCauley propeller, rear seat baggage compartment, extended rear baggage compartment, aft fishing rod tube, extended wing leading edge, modified wing tips to accomodate model Maule No. 504 wing tips, and modified tires. Held by Root, Byron L.. Last revised September 27, 1977. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.
- Models
- PA-18-150
- Type certificate
- 1A2
- On this site
- Piper PA-18 Super Cub 3,620 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.