Which document must be checked for GPS interference warnings?

Which document must be checked for GPS interference warnings?

• A. NOTAM
• B. METAR
• C. AIRMET
• D. SID

Answer: (A)

GPS interference warnings are communicated through NOTAMs. NOTAMs alert pilots to temporary or potentially hazardous changes in the aeronautical environment that could affect navigation, including degraded or unavailable GPS signals, outages of navigation aids, or other navigation-related constraints. Before flight, pilots review NOTAMs to know if GPS-based navigation or RNAV procedures may be unreliable along the route or at the destination. METARs provide current weather observations, AIRMETs warn about weather hazards, and a SID is a published departure route—none of these are the official channel for temporary navigation interference notices.

GPS interference warnings are communicated through NOTAMs. NOTAMs alert pilots to temporary or potentially hazardous changes in the aeronautical environment that could affect navigation, including degraded or unavailable GPS signals, outages of navigation aids, or other navigation-related constraints. Before flight, pilots review NOTAMs to know if GPS-based navigation or RNAV procedures may be unreliable along the route or at the destination.

METARs provide current weather observations, AIRMETs warn about weather hazards, and a SID is a published departure route—none of these are the official channel for temporary navigation interference notices.