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TB20 MAINTENANCE MANUAL 31 指示/记录系统 TB20飞机维护手册(16)

时间:2011-11-03 12:07来源:蓝天飞行翻译 作者:航空
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B. M50 clock (Figure 3)
The digital readout-type clock is located on the R.H. instrument panel or R.H. panel strip. It indicates the time, but is not approved in IFR condition flight.
The clock is electrically supplied by the the battery and protected by a fuse located on PL3 fuse panel.
C. M51 hourmeter (Figure 4)
The hourmeter is located either on the R.H. or L.H. instrument panel or on the R.H. or L.H. strip, depending on the space available.
The hourmeter counts either the flight time or the engine operation time according to the option chosen.
AAAA
Validity : S / N 1 - 9999 31-20 00Page 1
(BA) SEP 02
 
Flight time :
- In flight time version, the hourmeter is controlled by S56 microswitch, secured under the L.H. wing, at rib N11. When the aircraft reaches 40 Kt ± 10 Kt , the microswitch, equipped with a tab, applies a ground which triggers the counting. The operation time is given in hours and tenths of hours.
Engine operation time with hourmeter indicator :
- In engine operation time version, the hourmeter is controlled by MT14 pressure switch. When the engine oil pressure reaches its nominal value, MT14 pressure switch applies a ground which triggers the counting. The operation time is given in hours and tenths of hours.
Engine operation time with hourmeter integrated in M12 tachometer :
- The hourmeter integrated into the tachometer records the engine operation time as soon as the engine reaches 1000 rpm. A non-volatile memory stores the cumulated engine operation time on an LCD counter. The operation time is given in hours and minutes.
The hourmeter is electrically supplied by "BUS 3" bar and protected by a fuse located on PL3 fuse panel.
AAAA
Validity : S / N 1 - 9999 31 20 00(BA) SEP 02
Page 2
 
 
1 - Postlight
2 - Stop watch
3 - Stop watch with built-in lighting

 

 
 
Independent instruments - M50 mechanical stop watch
Figure 1
 
 
 
14312001AAADVZ4100 Independent instruments - M50 electric stop watch (built-in lighting)
Figure 2

AAAA
Validity : S / N 1 - 9999 31 20 00 (BA) SEP 0
Page 24
 
 
Variante de localisation Alternate location
 
Independent instruments - M50 clock
Figure 3
 
1 - E024 or M51 hourmeter
2 - M12 tachometer with built-in hourmeter
 

 
Independent instruments - M51 hourmeter
Figure 4
AAAA
Validity : S / N 1 - 9999 31 20 00(BA) SPEaPg e026
 
CENTRAL WARNING SYSTEMS
DESCRIPTION AND OPERATION
1. GENERAL
There are two kinds of warning systems :
- visual warnings using indicator lights of various colours,
- aural warnings using a buzzer (loudspeaker) installed on overhead panel.
 
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