PROPELLER SYSTEM (CSG) Flashcards
Propeller System
Max transient propeller RPM (Np) is _______ for ______ seconds.
1870, 20
AOH Vol 1, Chapter 5
Propeller System
Stabilized operation on the ground between _______ and ______ RPM is not permitted.
350, 950
AOH Vol 1, Chapter 5
Propeller System
(T/F) When oil volume within the pitch change cylinder increases, the blade angle increases.
False
AOH Vol 2, Section 26
Propeller System
What happens to oil metering when the propeller is in an underspeed condition?
CSU meters more oil to decrease blade pitch and increase RPM
AOH Vol 2, Section 26
Propeller System
What are the three levels of prop overspeed protection and associated RPMs?
CSU (1640-1760),
Overspeed Gov (1802),
Nf Gov (1853)
AOH Vol 2, Section 26
Propeller System
(T/F) The Battery Bus must be powered in order to feather the propeller.
True
AOH Vol 1, Chapter 3, Engine
Propeller System
What is the effect on aircraft performance if the prop does not feather during an inflight engine shutdown?
Windmilling prop drag will cause higher descent rate
AOH Vol 1, Chapter 3, Engine
Propeller System
What is the propeller blade angle in the normal governing range?
12-19°
AOH Vol 1, Chapter 5
Propeller System
What is the low pitch blade angle limit with throttle in full idle?
6°
AOH Vol 1, Chapter 5
Propeller System
What is the maximum negative blade angle with propeller in reverse?
-17.5°
AOH Vol 1, Chapter 5
Propeller System
What does the propeller feathering solenoid do?
Electrical power to the feather valve to dump oil & feather prop
AOH Vol 2, Section 26
Propeller System
What is the first step in the Propeller Low Pitch emergency procedure?
PCL…Ensure forward of idle detent
AOH Vol 1, Chapter 3, Engine
Propeller System
With a propeller overspeed above 1870 RPM, reduce airspeed to ______ KIAS or
below.
120
AOH Vol 1, Chapter 3, Engine
Propeller System
In flight, the EIS CAUTION will illuminate and Np digits will blink 40 times/min if the
propeller speed drops below _______ RPM when Ng is above _______ %.
1640, 90
AOH Vol 1, Chapter 3, Electrical (EIS)
Propeller System
How do you check the propeller on the preflight walk-around?
Check spinner, blades for nicks/damage, de-ice boots in good condition
AOH Vol 1, Chapter 2, Before Starting Engine checklist
