The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · amended

SA03274NY

This modification consists of replacing the existing engine on Lake Aircraft LA-4-200 with a Lycoming IO-390-A1A6 and installing one of the 3 following propellers: 1. MT Propeller MTV-12-B/LD188-119a, to be installed with either MT Propeller spinner assembly P-1005-1 or P-1005. 2. MT Propeller (reversing) MTV-12-B-C-R(M)/CRLD188-119a, to be installed with MT Propeller P-480 Series Reverse Governor and either MT Propeller spinner assembly P-1005-1 or P-1005. 3. Hartzell Propeller BHC-E2YR-1BLFP/FL7894-4. 4. Installation, operation, and maintenance of Lycoming IO-390-A1A6 engine and propeller configurations. Held by Lake Central Air Services (Canada), which holds 9 approved modifications in all. Last revised June 1, 2016. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
REVO Incorporated
Models
Lake LA-4-200
Type certificate
1A13
On this site
Consolidated Aeronautics Inc. LAKE LA-4-200 139 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.