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Voltage Regulator

Voltage Regulator

Models: D18S and D18C, No. 9         Issued: September 9, 1946 Reprinted:  September 25, 1950 Revised:  June 1, 1953 REVERSE CURRENT RELAYS AND VOLTAGE REGULATORS In order to give better efficiency in the maintenance of the reverse current relays and voltage regulators, located in the control panel box, this service letter lists below several […]

Slushing Fuel Tanks

Slushing Fuel Tanks

FLEXIBLE RUDDER TAB SHAFT WRENCH  |  Volume 2  |  October, 1948 Number 1 MODEL 18 SERVICE NOTES AND CHANGES Slushing Fuel Tanks To increase the life of the aluminum fuel tanks used in the Model 18, it is recommended that they be slushed, at the latest, after each 1000 hours of flying time with one […]

Nut Lifter

Nut Lifter

To get the nut started on the hinge bolts of the rudder and elevator, the illustrated “nut lifter” was devised. The off-set end is used at the main center hinges on both the elevator and rudder. The 5/32 rivets are driven and expanded to a size that will hold a quarter inch castle nut snugly. […]

Landing Light

Landing Light

Model D18S, No. 6  |  Reprinted:  October 26, 1951  |  TURNING LANDING LIGHTS “ON” OR “OFF” IN EXTENDED POSITION In order to improve the efficiency and operation of the landing lights, necessary wiring changes have been made on the Model D18S airplanes from Serial A133 and after to facilitate turning the landing light “on” or […]

Window Seal

Window Seal

Model:  D18S, No. 4  |  Revised:  April 15, 1953  |  SEALING CABIN WINDOWS Cabin window are sealed in rubber by using a pressure strip (A), mounted in the window frame (B). In the event leaks occur around the edge of the window frame, the following procedure should be used as a guide. Remove trim strip […]

Hat Holder

Hat Holder

Model D18S, No. 1  | Kit 500 | Issued 8-6-46 | Revised 10-29-53 Hat holders are now available for your airplane and, if desired, may be installed on airplanes prior to A-220 as follows:

Goodyear Brakes

Goodyear Brakes

VOLUME 1  |  APRIL 1, 1948  |  NUMBER 7  |  MODEL 18 SERVICE NOTES AND CHANGES  |  GOODYEAR 11.00 X 12 BRAKES The Goodyear Tire and Rubber Company, Inc., has informed us of an improvement change which has been made to the 11.00 x 12 brake discs, used on the Model 18.  Instead of machining […]

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