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 System 2 Nose Gear Door Closed S10081.
 System 1 Left Gear Door Closed S10242.
 System 2 Left Gear Door Closed S10076.
 System 1 Right Gear Door Closed S10241.
 System 2 Right Gear Door Closed S10072.
 Verify the GEAR DOORS Advisory message is no longer displayed.
 Remove the targets from S10241 and S10072 Right Gear Door Closed sensors.
 Wait at least 35 seconds, then verify the GEAR DOORS Advisory EICAS message is displayed.
 Reinstall targets on S10241 and S10072 Right Gear Door Closed sensors.
 Verify the GEAR DOORS Advisory message is no longer displayed.
 Remove the targets from S10242 and S10076 Left Gear Door Closed sensors.
 Wait at least 35 seconds, then verify the GEAR DOORS Advisory EICAS message is displayed.
 Remove all targets.
B. Verify Main Gear Up and Locked System 2 Sensors operate normally as follows:
1) Perform the PSEU BITE test.
2) Verify that no System 2 Main Gear Up and Locked sensors are faulted.
3) Place safety pins in gears. Move landing gear lever to OFF position.
4) Place targets on the following system 2 sensors:
 Nose Gear Up S10077.
 Nose Gear Locked S10078.
 Right Gear Up and Locked S10069.
 Left Gear Up and Locked S10073.
5) Verify there is no GEAR DISAGREE message displayed on EICAS.
6) Remove the target from S10069 Right Gear Up and Locked sensor.
7) Wait at least 25 seconds.
8) Verify the GEAR DISAGREE EICAS Advisory message is displayed.
9) Reinstall target on S10069 Right Gear Up and Locked sensor. Verify GEAR DISAGREE message is no longer displayed.
10) Remove the target from S10073 Left Gear Up and Locked sensor.
11) Wait at least 25 seconds.
12) Verify the GEAR DISAGREE EICAS Advisory message is displayed.
13) Remove all targets.
C. Verify Main Gear Up and Locked System 1 Sensors operate normally as follows:
 
1) Perform PSEU BITE test.
2) Verify no System 1 Main Gear Up and Locked sensors are faulted.
3) Place Safety Pins in gears. Move landing gear lever to OFF position.
4) Place targets on the following system 1 Sensors.
 Nose Gear Up S10238
 Nose Gear Locked S10065.
 Right Gear Up and Locked S10239.
 Left Gear Up and Locked S10240.
5) Verify that GEAR DISAGREE EICAS message is not displayed.
6) Remove the target from S10239 Right Gear Up and Locked sensor.
7) Wait at least 25 seconds.
8) Verify the GEAR DISAGREE EICAS Advisory message is displayed.
9) Reinstall the target to S10239 Right Gear Up and Locked sensor.
10) Verify the GEAR DISAGREE message is no longer displayed.
11) Remove the target from S10240, Left Gear Up and locked sensor.
12) Wait at least 25 seconds.
13) Verify the GEAR DISAGREE EICAS Advisory message is displayed.
　
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