The label 'AL 500 on HUD' corresponds to which warning type?

The label 'AL 500 on HUD' corresponds to which warning type?

• A. Radar Altimeter alert alt
• B. Attitude indicator fault
• C. Airspeed high alert
• D. Engine overheat warning

Answer: (A)

The key idea is reading HUD warning codes and what the abbreviation implies. “AL” on the HUD is used for an altitude-related alert issued by the radar altimeter, which measures height above the ground. The number that follows is the alert altitude, in this case 500 feet. So “AL 500” means the radar altimeter is signaling an alert at 500 feet above ground level. Other systems have different warning codes (attitude indicator faults, airspeed alerts, engine warnings), so their labels wouldn’t be shown as an altitude alert like this.

The key idea is reading HUD warning codes and what the abbreviation implies. “AL” on the HUD is used for an altitude-related alert issued by the radar altimeter, which measures height above the ground. The number that follows is the alert altitude, in this case 500 feet. So “AL 500” means the radar altimeter is signaling an alert at 500 feet above ground level. Other systems have different warning codes (attitude indicator faults, airspeed alerts, engine warnings), so their labels wouldn’t be shown as an altitude alert like this.