SA631CE
Install Lycoming IO-360-A1B engine, Hartzell HC-C2YK-1BL/L7666A-2 propeller and remove wing fillets. Data Required: Lake 4 Sales Engineering Report 62568, Rev. 9/9/68, Drawings L-0254 Rev. 3, E.O. 2-1165A, L-0255, L-2075, L-2076, L-2077, 2-5200 Rev. D, 2-6000 Rev. H, 2-7752, 2-7757 Rev. B, copy of this certificate and AFMS dated March 14, 1969. Held by Revo INC, which holds 13 approved modifications in all. Last revised September 30, 2004. System: propeller.
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.