When a cabin crew member is on "standby," they are essentially on a high-value "alert status" to fill in for colleagues who might be unable to work due to sickness, fatigue, or travel delays. There are generally two types of standby: Airport Standby (ASB) and Home Standby. During Airport Standby, the crew must remain at the airport in full uniform, ready to board a flight at a moment's notice—often within 20 to 30 minutes of a call. They typically wait in a dedicated crew lounge, catching up on training manuals, resting, or socializing with other "standby" peers. During Home Standby, they can be at home but must stay within a specific geographic range (usually a 90-minute drive) and keep their phone on at all times. In 2026, many airlines use automated "push notifications" via crew apps to trigger a standby call. It is a high-stress but high-value part of the job; you might spend the whole shift doing nothing, or you might find yourself suddenly flying to Tokyo or London with only an hour's notice, requiring constant "suitcase-readiness."