GPS may be unreliable or unavailable in the Mashhad TMA; pilots must report anomalies.

A2379/26

EST

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NavNavigation Aid Status

2026-10-22 06:35 - 2027-01-20 20:30

Duration:LONG4 months EST

Period of Applicability

2026-10-22 06:35 - 2027-01-20 20:30

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Interpretation

GPS is unreliable and may be unavailable within the lateral limits of the Mashhad TMA from ground level to FL245. EGPWS/GPWS may show erroneous indications and map shifting. Pilots must report GPS anomalies, including degraded operation or loss of service, as soon as possible.

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Raw NOTAM

A2379/26 NOTAMR A1662/26
Q)OIIX/QGAAU/I/NBO/A/000/245/
A)OIMM B)2610220635 C)2701202030EST
E)GPS UNREL AND MAY BE UNAVAILABLE WI AREA WITH
THE LATERAL LIMITS OF MASHHAD TMA AS SPECIFIED IN IRAN AIP,
FM GND UP TO FL245,
EGPWS/GPWS MAY DISPLAY ERRONEOUS INDICATION AND MAP SHIFTING,
AS REPORTED FREQUENTLY,
PILOTS SHALL REPORT GPS ANOMALIES INCLUDING DEGRADED OPERATION
AND/OR LOSS OF SER, ASAP.
F)GND            G)FL245

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