# STC SA710NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Leland O McKinney, United States
- Description: Installation of a Lycoming O-235-C1 engine, Sensenich M76AM-2 propeller, PA-18 fuel system and modified exhause and heater muff system
- Applied: October 18, 1978
- Status date: January 17, 1979
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-691](https://openairdocs.org/tcds/A-691)
- Certificate PDF: https://openairdocs.org/files/sha256/dc/53/dc5304f89b11dd601b0155f7e00baa3e194cfb22a10d3116c199e8503595a621
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4C3A2B96CA19333086257A4400669B7A.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA710NW

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)) ([TCDS A-691](https://openairdocs.org/tcds/A-691))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

STE United States of America • BOOK Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA710NK This certificate issued to: Leland O. Mckinney Purt 42 of the CiviI Air Regulations.

Original Product -Typebertificate Number: A-691 Make: Piper Model: J30-65 Description of Type Design Change: Installation of a Lycoming 0-235-C1 engine, Sensenich M76AM-2 propeller, PA-18 fuel system and modified exhaust and heater muff system in accordance with Leland O0. Mckinney photographs 1 through 4.

Similaluna and lunditina: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Piper J3C-65, Serial Number 17736 only. A copy of this Certificate and Addendum No. SA710NW shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: October 18, 1978 Date Reissued:

Date of Issuance: January 17, 1979 Date Amended:

FEDERAL AVIATION Charlie terrorder (Signature ) CMINISTRATO Chief, Engineering and Manufacturing Branch ('T itle)

47.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) January 17, 1979 Number SAT10NW Supplemental Type Certificate ADDENDUM NO. SA710NW The conditions and limitations of Type Certificate Data Sheet No. A-691 apply except where superseded by the following:

Supplemental Type Certificate Addendum, which is part of STC SA710NW, prescribes the conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Civil Air Regulations.

A copy of this STC Addendum is required to be maintained as part of the permanent records for the modified aircraft.

Supplemental Type Certificate HOLDER: Leland O. McKinney I. MODEL J3C-65 2PCLM (NORMAL CATEGORY) AS MODIFIED BY STC SA710NW Engine: Lycoming 0-235-C1 Fuel: 80/87 Octane Minimum Grade Aviation Gasoline Engine Limit: All operations 2800 rpm (115 Hp) Propeller and Sensenich M76AM-2 Propeller Limits: Diameter: Maximum 74" Minimum 70" Static Limits:

Maximum 2550 rpm Minimum 2450 rpm Maximum Weight: 1220 pounds Serial Nos. Eligible: 17736 only NOTE 1: Current weight and balance report including list of equipment in the certified empty weight must be in the aircraft.

NOTE 2: PLACARDS The following placard shall be located adjacent to each wing fuel tank filler cap:

**UNUSEABLE FUEL - 2 GALLONS USEABLE FUEL - 16 GALLONS**

- END -

FAA FORM 8110-2-1 (10-69) PAGE? OF2 PAGES FAA AC 73-2651

## Every issue (1)

- January 17, 1979: Issued, Current. [certificate](https://openairdocs.org/files/sha256/dc/53/dc5304f89b11dd601b0155f7e00baa3e194cfb22a10d3116c199e8503595a621)

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