3. DESCRIPTION A. Air intakes (Figures 1, 2, 2A, 3 and 3A)
The air intake, which supplies the cabin air mixer through the heat exchanger, is located on the lower cowling, on the L.H. side under the propeller spinner dome.
The NACA air intakes, located on the sides of the fuselage between the firewall and frame C1, supply fresh air to the pilot and front passenger air outlets, the radio rack and the cabin air mixer :
- the L.H. NACA air intake supplies the L.H. air outlet and the radio rack,
- the R.H. NACA air intake supplies the R.H. air outlet and the cabin air mixer.
S / N 379. 391, 406 - 584
A control located under the front air outlets makes it possible to close the L.H. and R.H. NACA air intakes. S / N 1 - 584
The rear air intake, located at the root of the vertical stabilizer, supplies fresh air to both rear air outlets located on the upper duct.
AEAA
Validity : S / N 1 - 584 21 20-00Page 1
(EA) AUG 01
As an option, a little window can be installed on the access doors to improve ventilation for the pilot and the front passenger, as well as a movable scoop on the rear transparent panels for the rear passengers.
B. Distribution hoses and air outlets (Figures 1, 2 and 2A)
Distribution is ensured by flexible, reinforced hoses.
The air outlets enable each passenger to adjust and direct the desired air flow for his / her own comfort.
C. Radio ventilation (Figures 1, 2 and 2A)
The air, at outside temperature, coming from the L.H. NACA air intake, supplies the diffuser secured to the L.H. side of the radio rack.
D. B13 radio fan (option) (Figure 1)
In order to improve the cooling of the radio rack equipment, a fan can be installed to accelerate the air circulation in the central pedestal console.
The air, at outside temperature, coming from the L.H. NACA air intake, circulates through the fan to the diffuser secured to the L.H. side of the radio rack.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：TB20 MAINTENANCE MANUAL 21 AIR CONDITIONING TB20飞机维护手册 21 空调(6)
