Every commercial flight has a squawk code. Learn why there are only 4,096 codes, what 7500, 7600, and 7700 mean, and how ATC ...

An American Airlines flight traveling from Houston George Bush Intercontinental Airport (IAH) to Phoenix Sky Harbor ...

The code used functions as a silent 'Mayday', prompting air traffic control to clear the surrounding airspace and alert emergency services ...

The T-6 aircraft took off from Anglesey Airport in Wales and indicated a general emergency on board while flying over ...

A Royal Air Force (RAF) aircraft has issued a squawk 7700 emergency alert while flying over Wales this morning, according to ...

A Ryanair flight travelling from Birmingham to Dublin declared an emergency shortly after take-off following a medical ...

A medical emergency was declared aboard a Ryanair aircraft shortly after it departed Birmingham Airport. Flight FR661 was en ...

An emergency was declared aboard a Ryanair service shortly after its departure from Birmingham Airport, prompting the crew to ...

The Ryanair plane was given priority landing clearance at Dublin Airport following a medical emergency on board ...

The Ryanair flight departed Birmingham on what was expected to be a routine journey across the Irish Sea to Dublin, but was ...

A Ryanair passenger said 'tensions were very high' when a flight from Faro to Exeter Airport was diverted to Birmingham, with ...

Squawk codes are four-digit transponder numbers that identify aircraft, while three universal codes alert air traffic control to critical situations in flight.