(2)
attitude (pitch, roll, yaw)
(3)
true and magnetic heading
(4)
windspeed and direction
(5)
velocity
(6)
accelerations
(7)
angular rate data
(8)
altitude
E. The IRS outputs are displayed on the flight instrument system displays. They are also displayed on the flight management computer system control display unit (FMCS-CDU) (Ref 34-62-01). Preselected parameters are also displayed on the inertial system display unit (ISDU).
2. IRS Theory of Operation
_______________________
A. General (Fig. 3)
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34-28-01
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A 737-300/400/500MAINTENANCE MANUAL
AFT OVERHEAD PANEL
SEE G H FORWARD OVERHEAD
PANEL
PILOTS' SEE C
LIGHTSHIELD
SEE J
CAPTAIN'S PANEL INERTIAL REFERENCE
SEE D E FIRST OFFICER'S PANEL UNIT 1 AND 2
SEE D E SEE A
FORWARD
ELECTRONICS P10 PANEL
PANEL SEE I
SEE F
E1 RACK
FLIGHT COMPARTMENT
DIGITAL/ANALOG
ADAPTER 1 AND 2 E3
SEE B E2 RACK RACK
MAIN EQUIPMENT CENTER
FAULT INDICATOR
TOTAL TIME YELLOW = FAULT
INDICATOR BLACK = OK
1
TEST SWITCH
INERTIAL REFERENCE UNIT
(IRU)
A DIGITAL/ANALOG ADAPTER (DAA)
AIRPLANES WITH -110 IRU's AND SUBSEQUENT;
1
NO FAULT BALL INDICATOR IS INSTALLED. THE B
CHASSIS INDICATOR HOLE CONTAINS A PLUG.
Inertial Reference System - Component Location Figure 1 (Sheet 1)
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A 737-300/400/500MAINTENANCE MANUAL
NORMAL IRS TRANSFER SWITCH
Inertial Reference System - Component Location
Figure 1 (Sheet 2)
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A 737-300/400/500MAINTENANCE MANUAL
CONTROL DISPLAY UNIT
(CDU)
IRS MODE SELECT UNIT
(MSU)
FLT CONT ELEC
IRS APU
FUEL OVHT/DET
IRS MASTER CAUTION UNIT IRS MASTER CAUTION LIGHT
Inertial Reference System - Component Location
Figure 1 (Sheet 3)
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A 737-300/400/500MAINTENANCE MANUAL
IRS Block Diagram
Figure 2
A96121
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