EGPWS LINE MAINTENANCE MANUAL
3.8.41 WEIGHT ON WHEELS DISCRETE
Weight On Wheels Discrete may be used by EGPWS to determine if the aircraft is on the ground.
Type: | Weight On Wheels Status |
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Signal Status: | On Ground or Not On Ground |
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| Level 6 Audio readout |
Weight On Wheels Discrete |
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| Selected => | “On Ground” | |
| Not Selected => | “Not On Ground” | |||
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3.8.42 GPWS INHIBIT DISCRETE
This discrete inhibits all audio and visual except for Windshear, Terrain Awareness and TCF.
Type: | Analog discrete input from a flight deck mounted switch |
Signal Status: | GPWS enabled or disabled |
Fault monitoring: Activation of this input for more than 5 seconds will result in the ‘GPWS Inhibit’ fault which will cause a GPW INOP indication.
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| Level 6 Audio readout |
GPWS Inhibit Discrete |
| GPWS Inhibit => | “GPWS Inhibit” |
| Not Inhibit => | “GPWS Not Inhibit” | |
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3.8.43 RAAS ENABLE DISCRETE (MK V AND MK VII ONLY)
Type: | Discrete for enabling RAAS functionality |
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Signal Status: | RAAS Enabled or Disabled |
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| Level 6 Audio readout |
RAAS Enable Discrete |
| True => | “Runway Awareness Enabled” | |
| False => | “Runway Awareness Disabled” | ||
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3.8.44 RAAS INHIBIT DISCRETE (MK V AND MK VII ONLY)
Type: | Discrete for inhibiting RAAS functionality, also inhibits Long Landing Monitor and Takeoff Flap | ||||
| Configuration Monitor |
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Signal Status: | RAAS Inhibit or Not Inhibit |
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| Level 6 Audio readout |
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RAAS Inhibit Discrete |
| True => | “Runway Awareness Inhibit” |
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| False => | “Runway Awareness Not Inhibit” |
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CAGE CODE: 97896 | SCALE: NONE SIZE: A DWG NO.: | REV: G | SHEET 49 of 68 |
