VOR azimuth distortion affects VOR-based ASTAR SID/STAR procedures; use ASTAR RNAV/GNSS alternatives when available.

A0365/26

EST

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NavApproach Procedures

VOR azimuth distortion affects VOR-based ASTAR SID/STAR procedures; use ASTAR RNAV/GNSS alternatives when available.

2026-10-28 10:00 - 2027-01-28 23:59

Duration:LONG4 months EST

Period of Applicability

2026-10-28 10:00 - 2027-01-28 23:59

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Interpretation

Flight calibration found significant VOR azimuth distortion affecting conventional VOR-based ASTAR procedures from 10 to 45 NM from the VOR; distance measurement remains within tolerance. Operators are advised to use alternative ASTAR RNAV/GNSS procedures when available and exercise caution with VOR-based ASTAR SID/STAR procedures.

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Raw NOTAM

A0365/26 NOTAMR A0237/26
Q) HAAA/QPIAU/I/NBO/A/000/999/1133N04309E045
A) HDAM
B) 2610281000 C) 2701282359 EST
E) CONVENTIONAL (VOR-BASED) ASTAR PROCEDURES FLIGHT CALIBRATION
INDICATES SIGNIFICANT AZIMUTH DISTORTION AFFECTING ASTAR PROCEDURES
FROM 10NM TO 45NM FROM VOR. DISTANCE MEASUREMENT REMAINS WITHIN
TOLERANCE.
DUE TO THESE LIMITATIONS,OPERATORS ARE ADVISED TO USE ALTERNATIVE
GNSS PROCEDURES (ASTAR RNAV/GNSS) WHEN AVAILABLE.
CAUTION ADVISED WHEN USING VOR-BASED ASTAR SID/STAR.

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