(5)
Place captain's INS transfer switch to CAPT 1 - F/O 2 position.
(6)
Set CAPT's and F/O's VOR-ILS/INS switches to INS position.
EFFECTIVITY
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(7)
Verify that on both captain's and first officer's HSI:
(a)
INS/VOR-ILS annunciator reads INS.
(b)
Data source annunciators read 1 and 2 respectively.
(8)
Slew each CDU display up until SYSTEM TEST page appears on each display.
(9)
Slew each CDU display up until AP/FLT DIR # 1 line is between entry line markers.
(10)
Press EXP pushbutton on each CDU.
(11)
Verify the following on each CDU display:
T-DTK *[1]
TK 22.5.
XTK R 3.8.
STR R .0.
HDG 11.3. GS 450
*[1] 50.1. on airplanes with LTN-92 INS
49.7. on airplanes with LTN-72RL INS
(12)
Verify the following on each HSI:
(a)
Compass card indicates 11.3 |1. when read against lubber line.
(b)
Desired track arrow indicates the following when read against
compass card: 50.1. |2. on airplanes with LTN-92 INS 49.7. |2. on airplanes with LTN-72RL INS
(c)
Drift angle display indicates 11 |1. R.
(d)
Course deviation bar is 1 |0.2 dot left of airplane symbol.
(e)
Distance display reads 888.
(f)
Ground speed display reads 450.
(g)
Navigation warning flag is out of view.
(h)
Heading warning flag is out of view.
(i)
True heading annunciator is in view.
(13)
Press STS pushbutton on each CDU.
G. Test Horizontal Situation Indicator (IB 406-499)
(1)
Set CAPT's and F/O's VOR-ILS/INS switches to INS position.
(2)
Set INS transfer switch on captain's instrument panel to CAPT 1 F/O 2 position.
(3)
Verify that on both captain's and first officer's HSI:
(a)
INS/VOR-ILS annunciator reads INS.
(b)
Data source annunciators read 1 and 2 respectively.
(4)
Set INS No. 1 CDU WPT switch to any position except 0.
(5)
Set INS No. 1 CDU data selector to TEST. Observe the following indications on captain's HSI:
(a)
HEADING and navigation (striped) flags are out of view.
(b)
TRUE/MAG annunciator reads TRUE.
(c)
11.2 degrees on azimuth card is positioned under lubber line.
(d)
Drift angle bug is positioned at 11.2 degrees on azimuth card.
(e)
Course pointer is positioned at 59.5 degrees on azimuth card.
(f)
Course deviation bar is positioned one dot to left of center.
EFFECTIVITY
ALL 01 Page 504 Apr 25/9134-41-06
(6)
Verify that MILES display reads 888 and GND SPEED display reads 512 on captain's HSI.
(7)
Set INS No. 2 CDU WPT switch to any position except 0.
(8)
Set INS No. 2 CDU data selector to TEST. Observe the following indications on first officer's HSI:
(a)
HEADING and navigation (striped) flags are out of view.
(b)
TRUE/MAG annunciator reads TRUE.
(c)
11.2 degrees on azimuth card is positioned under lubber line.
(d)
Drift angle bug is positioned at 11.2 degrees on azimuth card.
(e)
Course pointer is positioned at 59.5 degrees on aximuth card.
(f)
Course deviation bar is positioned one dot to left of center.
(9)
Verify that MILES display reads 888 and GND SPEED display reads 512 on first officer's HSI.
H. Restore Airplane to Normal
(1) Set each INS mode selector switch to OFF position.
CAUTION: FAILURE TO MOVE MODE SELECTOR TO OFF WILL CAUSE INS TO
_______ AUTOMATICALLY SWITCH TO BATTERY POWER AND A WARNING HORN IN NOSE WHEEL WELL TO ACTUATE 30 (| 10) SECONDS AFTER POWER IS REMOVED FROM AIRPLANE.
(2)
Remove electrical power if no longer required. Refer to 24-22-00.
(3)
Remove equipment cooling if no longer required. Refer to 21-58-00.
EFFECTIVITY
中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747飞机维护手册AMM CHAPTER 34 - NAVIGATION 第34章导航3(72)
