Tensions and concerns have increased after reports that a US Air Force E-3B Sentry aircraft disappeared from radar near the Strait of Hormuz.

According to reports based on FlightRadar24 data, the aircraft sent the international emergency code 7700 before disappearing from public radar tracking.

Last location near Hormuz

The aircraft’s last reported position was near the Strait of Hormuz, where it was flying at an altitude of more than 19,000 feet.

Reports said the aircraft later began descending rapidly, from around 22,000 feet to about 17,700 feet, before changing course away from the Gulf of Oman and Strait of Hormuz.

There has been no official confirmation that the aircraft was shot down or destroyed.

Iran claims remain unconfirmed

Social media posts and some reports have speculated that Iran may have targeted the aircraft. However, US Central Command has not confirmed any such claim.

Defense experts have also dismissed the shooting-down claims as unsupported by available evidence.

What does emergency code 7700 mean?

Experts said code 7700 does not automatically indicate a military attack. It can be transmitted during serious technical problems, an onboard fire or a medical emergency.

The aircraft’s disappearance from civilian radar may also have another explanation. Military aircraft can switch off their transponders during emergencies or for operational security.

Tankers reportedly provide support

Aerial refueling tankers reportedly departed from a US Air Force base in Qatar and were seen flying in UAE airspace, apparently in connection with the incident.

The Boeing-built E-3B Sentry is a highly valuable US military asset designed to provide airborne command, control and surveillance.