Q-CODE 4th & 5th Letters for
Terminal and En-route Navigation



ALL RADIO NAVIGATION FACILITIES (NA)
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
TTHAZARD
XX
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NDB (NB)
AGOPERATING BUT GROUND CHECKED ONLY, AWAITING FLIGHT CHECK
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
CFFREQUENCY CHANGED TO
CIIDENTIFICATION OR RADIO CALL SIGN CHANGED TO
CMDISPLACED
CSINSTALLED
CTON TEST, DO NOT USE
GIUNMONITORED
LFINTERFERENCE FROM
LGOPERATING WITHOUT IDENTIFICATION
LSSUBJECT TO INTERRUPTION
TTHAZARD
XX
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DECCA (NC)
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
CSINSTALLED
XX
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DME (ND)
AGOPERATING BUT GROUND CHECKED ONLY, AWAITING FLIGHT CHECK
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
CFFREQUENCY CHANGED TO
CIIDENTIFICATION OR RADIO CALL SIGN CHANGED TO
CMDISPLACED
CSINSTALLED
CTON TEST, DO NOT USE
LFINTERFERENCE FROM
LGOPERATING WITHOUT IDENTIFICATION
LSSUBJECT TO INTERRUPTION
TTHAZARD
XX
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FAN MARKER (NF)
AGOPERATING BUT GROUND CHECKED ONLY, AWAITING FLIGHT CHECK
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
CMDISPLACED
CSINSTALLED
TTHAZARD
XX
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LOCATOR (NL)
AGOPERATING BUT GROUND CHECKED ONLY, AWAITING FLIGHT CHECK
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
CFFREQUENCY CHANGED TO
CIIDENTIFICATION OR RADIO CALL SIGN CHANGED TO
CMDISPLACED
CSINSTALLED
CTON TEST, DO NOT USE
LFINTERFERENCE FROM
LGOPERATING WITHOUT IDENTIFICATION
LSSUBJECT TO INTERRUPTION
TTHAZARD
XX
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VOR/DME (NM)
AGOPERATING BUT GROUND CHECKED ONLY, AWAITING FLIGHT CHECK
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
CFFREQUENCY CHANGED TO
CIIDENTIFICATION OR RADIO CALL SIGN CHANGED TO
CMDISPLACED
CRTEMPORARILY REPLACED BY
CSINSTALLED
CTON TEST, DO NOT USE
LFINTERFERENCE FROM
LGOPERATING WITHOUT IDENTIFICATION
LSSUBJECT TO INTERRUPTION
TTHAZARD
XX
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TACAN (NN)
AGOPERATING BUT GROUND CHECKED ONLY, AWAITING FLIGHT CHECK
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AUNOT AVAILABLE
AWCOMPLETELY WITHDRAWN
CFFREQUENCY CHANGED TO
CIIDENTIFICATION OR RADIO CALL SIGN CHANGED TO
CMDISPLACED
CRTEMPORARILY REPLACED BY
CSINSTALLED
CTON TEST, DO NOT USE
GANOT COINCIDENTAL WITH ILS/PAR
GGUNUSABLE BEYOND
GHUNUSABLE
GIUNMONITORED
LFINTERFERENCE FROM
LGOPERATING WITHOUT IDENTIFICATION
LSSUBJECT TO INTERRUPTION
TTHAZARD
XX
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VORTAC (NT)
AGOPERATING BUT GROUND CHECKED ONLY, AWAITING FLIGHT CHECK
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
CFFREQUENCY CHANGED TO
CIIDENTIFICATION OR RADIO CALL SIGN CHANGED TO
CMDISPLACED
CRTEMPORARILY REPLACED BY
CSINSTALLED
CTON TEST, DO NOT USE
LFINTERFERENCE FROM
LGOPERATING WITHOUT IDENTIFICATION
LSSUBJECT TO INTERRUPTION
TTHAZARD
XX
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VOR (NV)
AGOPERATING BUT GROUND CHECKED ONLY, AWAITING FLIGHT CHECK
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
CFFREQUENCY CHANGED TO
CIIDENTIFICATION OR RADIO CALL SIGN CHANGED TO
CMDISPLACED
CRTEMPORARILY REPLACED BY
CSINSTALLED
CTON TEST, DO NOT USE
LFINTERFERENCE FROM
LGOPERATING WITHOUT IDENTIFICATION
LSSUBJECT TO INTERRUPTION
TTHAZARD
XX
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DIRECTION FINDING STATION (NX)
AHHOURS OF SERVICE ARE
ASUNSERVICEABLE
AWCOMPLETELY WITHDRAWN
CFFREQUENCY CHANGED TO
CIIDENTIFICATION OR RADIO CALL SIGN CHANGED TO
CSINSTALLED
CTON TEST, DO NOT USE
LTLIMITED TO
TTHAZARD
XX
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