Maintenance Manual XA41/XA42
AMM-XA42-0040-001 C.00
Page
2
Page date:
Chapter 61
25.09.2018
61-00-00 GENERAL
The XA41 and the XA42 have a MTV-9-B-C/C203-20d 3-blade, or MTV-14-B-C/C190-130 4-
blade constant-speed propeller.
For the control, the operation and the maintenance of the propeller, refer to the MT-
Propeller Operation and Installation Manual E-124.
61-10-00 PROPELLER
The propeller has a laminated wood structure with a layer of glass-fibre reinforced plastic.
Parts of the leading edge have metal tips to prevent erosion. Paint is applied to the propeller
as a protection from the environment.
The governor controls the pitch change. Thus, the selected rotational speed of the engine
stays constant during changes of airspeed or power.
Mechanical stops are available for low and high pitch. When the oil pressure of the governor
decreases, the propeller will automatically change to high pitch.
For troubleshooting and the removal and installation instructions, refer to MT-Propeller, ATA
61-01-24 (E-124) Operation and Installation Manual – Hydraulically Controlled Variable Pitch
Propeller MTV-9-(). No other special procedures for the aircraft are applicable.
61-20-00 PROPELLER CONTROL
The propeller is operated with a vernier control on the left side of the rear cockpit that goes
to the propeller governor.
To adjust the propeller control:
1
Push the vernier control knob fully forward. Turn it out approximately 5 mm.
2
Move the control lever on the governor to the forward stop.
3
Attach the control cable to the control lever on the governor in this position. Refer to
Figure 61-1 or Figure 61-2 depending on the aircraft serial number.
4
If you replaced the governor control cable: Apply RTV 106 sealant to the seal on the
engine side of the firewall.
For troubleshooting, and removal and installation instructions, refer to MT-Propeller, ATA 61-
20-48 (E-1048) Operation and Installation Manual - Hydraulically Constant Speed Governor
P-8()()-(). No other special procedures for the aircraft are applicable.
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