Interpretation

GPS is unreliable and may be unavailable within the Tehran TMA from ground level up to FL 275. EGPWS/GPWS may display erroneous indications and map shifting. Pilots are advised to report any GPS anomalies, including degraded operation or loss of service, as soon as possible.

Message

GPS UNRELIABLE AND MAY BE UNAVAILABLE WITHIN AREA WITH THE LATERAL LIMITS OF TEHRAN TMA AS SPECIFIED IN IRAN AIP, FM GND UP TO FL 275, EGPWS/GPWS MAY DISPLAY ERRONEOUS INDICATION AND MAP SHIFTING, AS REPORTED FREQUENTLY PILOTS SHALL REPORT GPS ANOMALIES INCLUDING DEGRADED OPERATION AND/OR LOSS OF SERVICE, AS SOON AS POSSIBLE.

Raw NOTAM

A2240/25 NOTAMR A0980/25
Q) OIIX/QGAAU/I/NBO/A/000/275/
A) OIIE B) 2507301226 C) 2510262030 EST
E) GPS UNRELIABLE AND MAY BE UNAVAILABLE WITHIN AREA WITH
THE LATERAL LIMITS OF TEHRAN TMA AS SPECIFIED IN IRAN AIP,
FM GND UP TO FL 275,
EGPWS/GPWS MAY DISPLAY ERRONEOUS INDICATION AND MAP SHIFTING,
AS REPORTED FREQUENTLY
PILOTS SHALL REPORT GPS ANOMALIES INCLUDING DEGRADED OPERATION
AND/OR LOSS OF SERVICE, AS SOON AS POSSIBLE.
F) GND G) FL275