曝光台 注意防骗
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Action: Remove aircraft from hanger and wait 5 to 20 minutes for the GPS/GNSSU acquire a sufficient number of satellites. Verify cabling and antenna connection for the GPS/GNSSU.
Enunciation: “TERRAIN AWARENESS NO VALID LONGITUDE”
Probable Cause: GPS/GNSSU has not acquired a sufficient number of satellites.
Action: Remove aircraft from hanger and wait 5 to 20 minutes for the GPS/GNSSU acquire a sufficient number of satellites. Verify cabling and antenna connection for the GPS/GNSSU.
Enunciation: “TERRAIN INOP”
Probable Cause: GPS/GNSSU has not acquired a sufficient number of satellites.
Action: Remove aircraft from hanger and wait 5 to 20 minutes for the GPS/GNSSU to acquire sufficient number of satellites. Verify cabling and antenna connection for the GPS/GNSSU.
Description: “TERRAIN AWARENESS-POSITION ERROR”
Probable Cause: GPS/GNSSU has not acquired a sufficient number of satellites or ARINC [743A / 743] setting incorrect.
Action: Remove aircraft from hanger and wait 5 to 20 minutes for the GPS/GNSSU to acquire sufficient number of satellites. Verify cabling and antenna connection for the GPS/GNSSU. Verify correct 743A / 743 configuration.
Enunciation: “TERRAIN CLEARANCE FLOOR POSITION ERROR”
Probable Cause: GPS/GNSSU has not acquired a sufficient number of satellites or ARINC [743A / 743] setting incorrect.
Action: Remove aircraft from hanger and wait 5 to 20 minutes for the GPS/GNSSU to acquire sufficient number of satellites. Verify cabling and antenna connection for the GPS/GNSSU. Verify correct 743A / 743 configuration.
EGPWS LINE MAINTENANCE MANUAL
3.5 LEVEL 3 SELF-TEST - SYSTEM CONFIGURATION
A Level 3 Self-Test enunciates EGPWC configuration information. Level 3 is accessed while the aircraft is on the ground by pressing the EGPWS test switch within 3 seconds of the “PRESS TO CONTINUE” message at the end of the Level 2 test. The message “SYSTEM CONFIGURATION” will be enunciated when Level 3 starts.
During a Level 3 Self-Test, a short cancel bumps the enunciation to the next Level 3 item (e.g. from terrain database information to envelope modulation database information). A long cancel terminates the Self-Test level and “PRESS TO CONTINUE” is enunciated for proceeding to Level 4 Self-Test.
TABLE 3-6: LEVEL 3 SELF-TEST INFORMATION
THE FOLLOWING INFORMATION IS GIVEN IN THE LEVEL 3 SELF-TEST:
1. Part Number
2. Mod Status
3. Serial Number
4. Application Software Version
5. Configuration Software Version
6. Terrain Database Version
7. Envelope Modulation Database Version
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本文链接地址：增强型近地警告系统 Enhanced Ground Proximity Warning 航线维护手册 Systems Line Maintenance Manual(29)
