Viewing page 43 of 53

39.  An indication of the presence of carburetor ice is: ^[[reduced Man Pres.]]

40.  The two methods used to combat carburetor icing are:
a.  ^[[Heat]]
b.  ^[[Alcohol]]

[[underlined]] OIL SYSTEM [[/underlined]]

41.  The usable oil capacity is ^[[25]] gallons and the oil tanks are located ^[[on each engine nacelle]]

42.  The minimum oil temperature and fuel pressure for run-up are ^[[40°C]] and ^[[16 psi]] respectively.

43.  Minimum oil pressure for flight is:
a.  40 PSI.
b.  70 PSI.
[[circled]] c. [[/circled]]  60 PSI.

44.  Normal oil temperature should read:
a.  60°C to 90°C.
[[circled]] b. [[/circled]] 60°C to 80°C.
c.  40°C to 100°C.

45.  The procedure for oil dilution is:  ^[[1. Engines 1000-1200 rpm.  2. Oil temp below 50°C.  3. Dilute sw 2-4-7 min.  4. Prop controls.  5. Accelerate 10 sec.  6. Idle cut-off, holding dil s.w ON.

[[underlined]] FUEL SYSTEM [[/underlined]]

46.  The total usable fuel in US fallons in the C-47 is:
a.  402 gallons mains;  400 gallons auxs.
[[circled]] b. [[/circled]] 404 gallons mains;  398 gallons auxs.
c.  800 gallons all tanks.

47.  The selector handle on the fuel quantity indicator is turned ^[[clockwise]] when checking the fuel tank quantities.

48.  Minimum fuel pressure for flight is:
[[circled]] a. [[/circled]]  16 PSI.
b.  18 PSI.
c.  20 PSI.

49.  What is the normal usage of fuel with full tanks, and why?  ^[[Mains - then aux - C.G.]]

Please note that the language and terminology used in this collection reflects the context and culture of the time of its creation, and may include culturally sensitive information. As an historical document, its contents may be at odds with contemporary views and terminology. The information within this collection does not reflect the views of the Smithsonian Institution, but is available in its original form to facilitate research. For questions or comments regarding sensitive content, access, and use related to this collection, please contact