{Please note that as of 2014 the C-9B/DC-9 aircraft are now all retired and these webpages are for historical reference only.}
202.1.1 Thrust Reverser
The thrust reversers direct engine exhaust gases forward, above and below the engine nacelle to reverse forward motion.
b. Where is it located?
Each engine is equipped with a thrust reverser that consists of two doors or deflectors, that form the aft nacelle fairing when the doors are in the stowed position.
c. What are the safety precautions?
The reverser control valve has a manual override control arm that may be manually operated from the exterior of the aircraft through an access door to deactivate the thrust reverser doors in the stowed or open position for safe ground maintenance or inspection. To operate the manual override, the control valve arm is rotated to the dump position and a safety pin, provided in stowage clips, is inserted through the control valve arm. This action ports thrust reverser actuator and accumulator pressure to return, and aircraft hydraulic system pressure is blocked. The access door to the reverser control valve cannot be closed until the override control arm is placed in a safe flight position.
202.2 Auxiliary Power Unit (APU)
The APU is a gas turbine engine that supplies pneumatic power and drives an APU mounted generator to supply electrical power. When the aircraft is on the ground, the APU supplies pneumatic and electric power for starting the main engines, for fuselage air conditioning, and for operating the complete electrical system. When the aircraft is in flight, the APU is operable to supply an alternative source of electrical power. The APU is not designed to supply pneumatic power in flight.
b. Where is it located?
The APU is mounted transversely in a fixed, fire proof, sound-attenuated, enclosed compartment on the lower centerline of the fuselage aft of the rear pressure bulkhead.
c. What are the safety precautions?
Remove all covers and inspect the area for foreign objects and foreign object damage (FOD).
Fuel cells/tanks
a. What is its function?
The fuel supply system is designed to provide uninterrupted fuel flow under all conditions and attitudes encountered in normal service. The system permits fuel servicing from a single point on the bottom of the right wing by one man, without ground support equipment other than a fuel servicing unit. The system may also be serviced by gravity feed at fill points on the top outboard end of each wing.
b. Where is it located?
There are 3 integral wing tanks, a forward fuselage tank, and an aft fuselage tank.
c. What are the safety precautions?
When fueling the aircraft, ensure it is grounded and there is a fire bottle watch posted.
a. What is its function?
Allows fuel vapors to escape from the fuel tank/cell during fueling. Allows air to return to the tank as fuel is consumed.
b. Where is it located?
Located on the bottom of each wing tip.
c. What are the safety precautions?
Stay away from fuel vents when fueling. Fuel vapors are a respiratory hazard. Be certain that vents are unobstructed.
Fuel Boost Pumps
a. What is its function?
To provide adequate fuel flow to both engines at takeoff power.
b. Where is it located?
There are two installed in each tank.
c. What are the safety precautions?
There are thermal switchs installed within each pump that are not self-resetting.
Control Panels
The control panel contains switches that are necessary for turning the boost pumps on and off.
b. Where is it located?
Overhead panel in the cockpit.
202.3.1 What is the C-9B/DC-9 total fuel capacity in pounds?
flygal46@yahoo.com
AZC(AW/NAC) Kimberly King
King's C-9B/DC-9 (Specific) EAWS Tutorial King's EAWS Common Core Tutorial |