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procedures, refer to the appropriate
FAA-approved abbreviated checklist or AFM.
CAUTION
WARNING
WARNING
Figure 17-13. Oxygen Bottle
SQUAT SWITCH SYSTEM
DESCRIPTION
This section provides an overview of squat
switch system functions, operation, and information
about when a squat switch is not operating
properly.
There is one squat switch on each left and right
main landing gear. The switch indicates when
weight is on that wheel. The squat switches
are positioned in the landing gear assembly, and
detect when wheel position changes up or down,
as caused by weight-on-wheels or weight-offwheels.
Refer to Chapter 14—“Landing Gear
and Brakes” for more detail.
Each squat switch is connected to several aircraft
systems. Some systems are connected to
both squat switches. Some systems function
differently depending on whether the weight
is on one wheel or on both wheels. Some systems
are sensitive to whether only a specific
wheel (left or right) has weight on it.
If the squat switches are not in the same position
(weight-on-wheels or weight-offwheels)
for more than 2 seconds, the amber
510OM-00 17-11
CITATION MUSTANG OPERATING MANUAL
OXYGEN SUPPLY CHART 22 FT3
AVAILABLE TIME IN MINUTES
CABIN
ALTITUDE
2
COCKPIT
2
COCKPIT,
1 CABIN
2
COCKPIT,
2 CABIN
2
COCKPIT,
3 CABIN
2
COCKPIT,
4 CABIN
8000
10,000
15,000
20,000
196
225
220
178
74
78
79
73
46
47
48
46
33
34
35
34
26
27
27
27
25,000
30,000
35,000
40,000
98
129
175
246
55 39 30 24
AVAILABLE TIME IN MINUTES
CABIN
ALTITUDE
1
COCKPIT
1
COCKPIT,
1 CABIN
1
COCKPIT,
2 CABIN
1
COCKPIT,
3 CABIN
1
COCKPIT,
4 CABIN
8000
10,000
15,000
20,000
392
450
440
356
91
95
96
92
52
53
54
53
36
37
37
37
28
28
29
29
25,000
30,000
34,000
40,000
197
258
350
492
77 48 35 27
Table 17-1. OXYGEN SUPPLY DURATION
CAS message WOW MISCOMPARE warns of
the difference.
Malfunctions of the squat switches
and their associated circuits may
cause abnormal functioning of any or
all of the aircraft systems that use
squat switch information.
Dependent Systems
The following systems require squat switch information
for normal functioning:
• External doors
• Engine/FADEC
• Pneumatics
• Windshield anti-ice
• Air conditioning
• Pressurization
• Landing gear
• Brakes (antiskid)
• Avionics
• Stall warning
CONTROLS AND INDICATIONS
L and R SQUAT SWITCH Circuit
Breakers
Each squat switch (left and right) is powered
through the corresponding L or R SQUAT
SWITCH circuit breaker in the ENGINE SYSTEMS
section of the corresponding CB panel
(left or right).
WOW MISCOMPARE Message
The amber CAS message WOW MISCOMPARE
indicates that the squat switch system is indicating
different status (miscompare) of the two
switches. One squat switch appears to indicate
weight-on-wheels while the other appears to
indicate weight-off-wheels. The message does
not display until the miscompare has continued
for 2 seconds. This allows for momentary differences
during takeoff and landing.
The miscompare may be caused by:
• Different wheel positions
• Stuck squat switch
• Electrical short or open circuit
• Problems with the multi-function PCB
• Popped L or R SQUAT SWITCH circuit
breaker
• Loss of power to a squat switch
EMERGENCY/ABNORMAL
For specific information on emergency/abnormal
procedures, refer to the appropriate abbreviated
checklists or the FAA-approved AFM.
CAUTION
17-12 510OM-00
CITATION MUSTANG OPERATING MANUAL
CHAPTER 18
MANEUVERS AND PROCEDURES
CONTENTS
INTRODUCTION................................................................................................................. 18-1
GENERAL ............................................................................................................................ 18-1
PERFORMANCE.................................................................................................................. 18-2
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