STC SA4-159

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

1. NAME AND ADDRESS OF APPLICANT Al craft Tank Service Inc.

10201 Cohanset St.

Burbank, Cali?.

3. DESCRIPTION OF CHANGE 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 DO 3 Series DOUGLAS NEW MODEL DESIGNATION (If desired) Installation of outer wing integral fuel tank including fuel system and fuel dumping provisions.

See Reverse Side (Placards)

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

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

5. SIGNATURE AND TITLE OF APPLICANT

SIGNATURE Jan. 7, 1957 Ags't. General Manager Date of Application: TITLE

6. TO BE COMPLETED BY CAA

NATURE AND LOCATION OF DATA Modifications nade in accordance with Aircraft Tank Service Inc. Draving No. 1839. Technical data on file in Aircraft Engineering Division, FAA Region IV, Los Angeles, California.

ORIGINAL TYPE CERTIFICATE NO. CAA APPROVAL : 678-669 Charles R. Hawks Original signed by Supplemental Type Certificate NO. Thacco L Lippis

SIGNATURE SAL-159

DATE OF APPROVAL 1-9-57 Chief, Engineering and Manufacturing Branch Revised 12-20-60 TITLE COMM- DC 32484 FORM ACA-2417 (7-56)

Fuel Capacity Total (3100 Gal.) Usable (1092 0al.) ARM 2 outer wing tanks 550 Gal. each 5h7 1/2 0al. each F7u.1 in.

Note J The following must be in the airplane in clear view of the pilot in the form of placards and/or incorporated in the Airplane Flight Manual.

(1) "Puel capacity 550 gallons per tank"

(2) 'Load fuel symmetrically about centerline"

(3) "Umsable Fuel - 2.5 gallons per tank" (!) "Take-off and land - both tanks 'on! - cross feed 'off! "

(5) "Cross feed operation - cross feed lon! » Inoperative tank 'off"

(6) "Fuel dumping - Airspeed 120 knots (138 MPH) indicated Flaps and gear up Dumping rate 130 gallons, 180//nin (approx) per tank!

Close dump valves after dumping Undumpable fuel '60 gallons per tank!"