# STC SA4-94

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Aircraft Tank Service Inc, United States
- Description: Installation of outer wing integrel fuel tank including fuel system and fuel dumping provisions and center section baggage compartment
- Applied: July 30, 1956
- Status date: August 17, 1956
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-618](https://openairdocs.org/tcds/A-618), [TCDS A-669](https://openairdocs.org/tcds/A-669)
- Certificate PDF: https://openairdocs.org/files/sha256/63/5a/635a1ee6e4669c709b9870a251c885021c5914d11b41b2ecdd83d1afa7bff5f9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/780BC02DC9B21F0A86257E1C007318AB.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4-94

## ADs that name it (0)

None.

## Approved models (14)

- The Boeing Company DC3-G102 ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- The Boeing Company DC3-G102A ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- The Boeing Company DC3-G103A ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- The Boeing Company DC3-G202A ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- The Boeing Company DC3A-S1C3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-S1CG ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-S4C4G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-SC3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-SCG ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-R-1830-90C ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-S1C3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-S4C4G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-SC3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3D-R-1830-90C ([TCDS A-669](https://openairdocs.org/tcds/A-669))

## What the certificate says

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

Form LA-134 11/22/55 U. S. Department of Commerce Civil Heronautics Administration Supplemental Type Certificate Name of Applicant AIRCRAFT TANK SERVICE INC.

Instructions: This application to be submitted in triplicate, Information for items 1 thru 5 to be supplied by the applicant.

Da te July 30, 1956 Address 10201 Cohasset Street Burbank, California Supplemental Type Certificate Applied For:

Aireraft Engine Propeller Appliance Original Model Designation I-3 Series New Model Designation (if desired) Description of Change Installation of outer wing integral fuel tank including fuel system and fuel dumping provisions and center section bagpage compartments, per drawings lieted on Aireraft Jank Service Inc, summery drawings 18134 and 1836å, (Use actual veight of installation.)

(SEE RIVERSE SIDE THIS PAGE)

**TO BE COMPLETED BY CAA**

6. Nature and Location of Data Technical date on file in CA Region IV Office, Los Anpeles 45, California.

Original Type Certificate No. APPROVED:

A=618 and A-669 Supplemental Type Certificate No.

S1494 Date of Approval Chief, Aircraft Engineering Division August 17, 1956

Fuel Caracity. Totel (1100 Gal.) Usable (1095 Gal.) ARM 2 outer ving tanks 550 Gal, each 547% Cal, each + 74.1 in.

Begrage Caracity 2 fvd, baggage compt. in C.S. ving (450/ each) 900/ + 48.0 in.

2 rear baggage compt. in C,5, wing (450/ each) 900/ + 83.5 in.

Nate Le Installation of outer ving fuel tanks cannot be made without incorporating the center section baggage compartment installation per Draving 18364.

Note 2.

The folleving must be in the airplane in clear view of the pilot in the form of placards and/or incorporated in the Airplane flight Manuel.

(1) "Fuel capacity 550 gallone per tank"

(2) "Loed fuel symmetrically about centerline"

(3) "Unusable fuel - 2.5 gallons per tank"

(4) #Take-off and land - both tanks 'on' - cross feed 'offi

(5) "Cross feed operation - cross feed 'on' - inoperative tank forti

(6) "Fuel Jumping - Airspeed 120 knots (138 MPH) indicated Flays and gear up Dumping rete 130 gallons, 180//min (apprex) per tank!

Close dump valves after dumping Undumpable fuel '60 gallons per tank!# Note 2e The following placard must be installed on each of the four baggage compartments:

Maximum capacity, bagrage and installed equipment 450 1ts."

## Every issue (1)

- August 17, 1956: Issued, Current. [certificate](https://openairdocs.org/files/sha256/63/5a/635a1ee6e4669c709b9870a251c885021c5914d11b41b2ecdd83d1afa7bff5f9)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.