Diamond DA 42 NG, Maintenance Manual

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AIRCRAFT
DA 42 NG AMM Flight Controls
Doc # 7.02.15
Rev. 4
27-20-00
Page 3
15 Mar 2018
2. Description
The DA 42 NG has a set of rudder control pedals for each pilot. The pedal assembly can be adjusted.
Figure 1 shows the rudder control system. Figure 2 shows the rudder pedal assembly with manual
pedal adjustment. Figure 3 shows the rudder pedal assembly with electrical pedal adjustment (optional
equipment, OÄM 42-070). Figure 4 shows the rudder control in the cockpit and Figure 5 shows the
rudder controls in the fuselage The system has these components:
)
A rudder pedal assembly for each pilot at the front of the cockpit. The forward part of each pedal
connects to a brake master cylinder (refer to Section 32-40 for more data about the brake system).
)
An adjuster handle for each pilot, attached to the aft face of each rudder pedal assembly or as
optional equipment, an adjuster switch for each pilot, located at the rear wall of the leg room.
)
A yoke (a “T” shaped lever) assembly in the fuselage below the center console. The yoke attaches
to the bottom of the control bulkhead and to the fuselage shell.
)
A rudder pedestal at the rear of the fuselage. The rudder lower mounting-bracket is attached to the
rudder leading edge. It connects the rudder to the rudder pedestal.
)
Cable assemblies. Flexible control cables connect the cockpit front bulkhead to the yoke. Two long
flexible control cables connect the yoke to the rudder. Each of the long flexible cables has a
turnbuckle assembly for adjusting the length of the cable.
Six bolts attach each rudder pedal assembly to the cockpit floor.
Each rudder pedal assembly has two pedals. Each pedal has a lever and a foot pad. Each pedal has
an “S” shaped tube. The lower part of the tube aligns with the pivot of the pedal. The upper part of the
tube aligns with the foot pad of the pedal.
Four control cables (cockpit cables) go from the cockpit front bulkhead to enter the bottom of each “S”
shaped tube. A multihole fitting at the bulkhead gives adjustment for each fitting. Each cable goes
through an “S” shaped tube and comes ut at the top of the tube. Each cable then goes from the tube
to the yoke.
Each outboard control cable goes through a Teflon tube in the aft face of the floor panel. Each
outboard control goes inboard through a guide pulley on the control bulkhead. The cables connect
each outer pedal to the front arm of the yoke.
Each inboard control cable goes through a Teflon tube in the aft face of the floor panel. The cables
connect each inner pedal to the side arms of the yoke.