# STC SA631CE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Revo Inc, United States
- Description: 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.
- Applied: April 11, 1968
- Status date: September 30, 2004
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A13](https://openairdocs.org/tcds/1A13)
- Certificate PDF: https://openairdocs.org/files/sha256/95/65/956550933dc0361db5470a6056328f8ef95faa85100620eecfa5100eb0478e31
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E325DBDE7CF8698586256F860067E7A6.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA631CE

## ADs that name it (0)

None.

## Approved models (1)

- REVO Incorporated Lake LA-4 ([TCDS 1A13](https://openairdocs.org/tcds/1A13))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Number SA631CE This certificate issued to Revo, Incorporated 1396 Grandview Boulevard Kissimmee, Florida 34744

Part 03 of the Civil Air Regulations.

Original Product--Type Certificate Number : 1A13 Make : REVO Model : Lake LA-4

Description of Type Design Change: 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.

Limitations and Conditions: This modification is to be accomplished at the facility of Lake Aircraft, Inc. only.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications will produce no adverse effect upon the airworthiness of that airplane. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of application : April 11, 1968

Date of issuance : December 05, 1968 Date reissued : April 20, 1970; July 24, 1979; July 27, 1979;

April 24, 1984; October 6, 1989;

November 20, 2002; September 30, 2004 Date amended : October 15, 1969

( Signature) Melvin D. Taylor Manager Atlanta Aircraft Certification Office

(Title)

## Every issue (1)

- September 30, 2004: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/95/65/956550933dc0361db5470a6056328f8ef95faa85100620eecfa5100eb0478e31)

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