SA781EA
Conversion of the Lake LA-4 Amphibian to LA-4 Seaplane. Modifications consist primarily of removing landing gears and covering resultant openings with skin in accordance with Aerofab, Inc. drawing list dated January 30, 1969. Held by Revo INC, which holds 13 approved modifications in all. Last revised September 30, 2004. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- REVO Incorporated
- Models
- Lake LA-4
- Type certificate
- 1A13
- On this site
- Consolidated Aeronautics Inc. LAKE LA-4 15 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.