# STC SA1612WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Walter E. Heller and Company, United States
- Description: Installation of Hamilton Standard Hydromatic Full Feathering Propellers 22D30-213/6533A-12, Propeller feather system, BT-13 oil cooler and cowling and modified oil tank.
- Applied: February 21, 1968
- Status date: February 21, 1968
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS TC 551](https://openairdocs.org/tcds/TC%20551)
- Certificate PDF: https://openairdocs.org/files/sha256/1a/05/1a05df2ad0d0bcf18f596c4159e0162826dfd0a6906e5a0217bcfcecc6ab6375
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1EF70F96C0F5AB28862576000050F45B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1612WE

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation Electra 10-A (Army UC-36A; Navy R-20; and XR-20-1) ([TCDS TC 551](https://openairdocs.org/tcds/TC%20551))

## What the certificate says

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

WE - 102 Federal Aviation Agency Supplemental Type Certificate Number 8A162 2WE This certificate issued to: Walter E. Heller and Company 210 West Seventh Street Los Angeles, California 90014 the tattere gitational Aero Bulletin TA.

TC 551

LOCKHEED 10A, N4886V, Serial No. 1130 Description of Type Design Change:

Installation of Hamilton Standard Hydromatic Full Feathering Propellers 22D30-213/6533A-12, Propeller feather system, BT-13 oil cooler and cowling and modified oil tank in accordance with Walter E. Heller and Company Report No. WEH-R31066.

LIMITATION OF APPLICABILITY. Data not suitable for reproduction of installation in other aircraft; therefore, it is satisfactory for Lockheed 10A, N4886V, Serial No. 1130 only. No additional modifications of this type are to be approved solely by reference to this Supplemental Type Certificate or to the data submitted therefor.

Date of Application: March 10, 1966 Date Reissued:

Date of issuas February 21, 1968 Date Amended:

By Direction of the Administrator (Signature inal Signed by AND TATE OS AN R. I. Lippia Chief, Aircraft Engineering Division (Title) 47 FAA FORM 8110-2 (1-66) 0052-657-6000

## Every issue (1)

- February 21, 1968: Issued, Current. [certificate](https://openairdocs.org/files/sha256/1a/05/1a05df2ad0d0bcf18f596c4159e0162826dfd0a6906e5a0217bcfcecc6ab6375)

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