GPS is unreliable and may be unavailable within the Tehran TMA.

A1761/26

EST

Checking status...

NavNavigation Aid Status

2026-08-05 08:00 - 2026-11-01 23:59

Duration:3 months EST

Period of Applicability

2026-08-05 08:00 - 2026-11-01 23:59

Timeline Visualization

Get instant access to visual timeline analysis and NOTAM scheduling information with Notamify Pro.

7 days free trial, then $24.9/month. Cancel anytime.

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 must report GPS anomalies, degraded operation, or loss of service as soon as possible.

Map Visualization

Loading map data

Please wait...

Raw NOTAM

A1761/26 NOTAMR A3524/25
Q)OIIX/QGAAU/I/NBO/A/000/275/
A)OIIE B)2608050800 C)2611012359EST
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

Was this helpful?