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A2433/26
EST
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GPS may be unreliable or unavailable within the Tehran TMA; pilots shall report anomalies.

2026-10-27 10:46 - 2027-01-25 20:30
Duration:LONG4 months EST

Period of Applicability

2026-10-27 10:46 - 2027-01-25 20:30

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Interpretation

GPS is unreliable and may be unavailable within the lateral limits of the Tehran TMA, from ground level to FL275. EGPWS/GPWS may show erroneous indications and map shifting. Pilots shall report GPS anomalies, including degraded operation or loss of service, as soon as possible.

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Raw NOTAM

A2433/26 NOTAMR A1761/26
Q)OIIX/QGAAU/I/NBO/A/000/275/
A)OIIE B)2610271046 C)2701252030EST
E)GPS UNREL AND MAY BE UNAVAILABLE WI AREA WITH
THE LATERAL LIMITS OF TEHRAN TMA
AS SPECIFIED IN IRAN AIP,
FM GND UP TO FL275,
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)FL275
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