# STC SA4-557

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Cunningham Dudley H, United States
- Description: Wing center-section fittings (front and rear).
- Applied: May 22, 1958
- Status date: August 5, 1958
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: TCDS ATC 32
- Certificate PDF: https://openairdocs.org/files/sha256/56/1e/561e845236d1e83fdc661c0837c1574f52743875e75b6ea4e015243cffb74ae5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6F3864FD61771694862588A9004E4C96.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-557

## ADs that name it (0)

None.

## Approved models (1)

- Curtiss-Wright Corporation Travel Air 4000 (TCDS ATC 32)

## What the certificate says

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

FORM ACA-2417 U.S. DEPARTMENT OF COMMERCE Supplemental Type Certificate

1. NAME AND ADDRESS OF APPLICANT Dudley Al. Cunningham 539 & Street Tuba City, California LA Form Approved, Budget Bureau No. 41-R1823 INSTRUCTIONS - Submit in triplicate to local CAA Aviation Safety Agent. Copy will be returned to applicant upon issuance.

Supplemental Type Certificate APPLIED FOR:

- AIRCRAFT ENGINE PROPELLER

ORIGINAL MODEL DESIGNATION Traveleir 4000 Series NEW MODEL DESIGNATION (If desired)

3. DESCRIPTION OF CHANGE Installation of wing center section fittings(front and rear) manufactured in accordance with Dudley He Gunningham drawing No. -.

LIMITATION OF APPLICABILITY. This approval should not be extended to other specific airplanes of these models on which other previously approved nodifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane.

WILL DATA BE AVAILABLE FOR SALE OR RELEASE TO OTHER PERSONS? YES LET NO

• WILL PARTS BE MANUFACTURED FOR SALE (Ref. CAR 1.55)? YES NO

5. SIGNATURE AND TITLE OF APPLICANT 5/22/58 Date of Application: fully H. Cunsinghani 7N9888

**6. TO BE COMPLETED BY CAA**

NATURE AND LOCATION OF DATA Dudley H. Cunningham Drawing No. -.

Dudley H. Cunningham Report No. DHC-Rl.

Data is on file in the Aircraft Engineering Division, CAA, Region IV, Los Angeles California Certification Basis: CAR 8.

ORIGINAL TYPE CERTIFICATE NO. CAA APPROVAL ORIGINAL SIGNED BE 32 W. A. KLIKOFE Supplemental Type Certificate NO. W. A. KLikoff, SIGNATURE SA4-557

•TE OF APPROVAL Chief, Aireraft Engineering Division August 5, 1958 TITLE FORM ACA-2417 (7-56) COMM- DC 32484

## Every issue (1)

- August 5, 1958: Issued, Current. [certificate](https://openairdocs.org/files/sha256/56/1e/561e845236d1e83fdc661c0837c1574f52743875e75b6ea4e015243cffb74ae5)

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