Two P-8As Departed Sigonella, But One Appeared as a B-52: Why This Matters for Flight Tracking

Two U.S. Navy P-8A Poseidon maritime patrol aircraft departed NAS Sigonella today heading east, likely toward the Middle East or the Horn of Africa. While the movement itself was notable, what attracted attention among flight-tracking enthusiasts was that one of the aircraft appeared to be transmitting an ICAO hex code associated with a U.S. Air Force B-52 bomber.

That anomaly quickly fueled speculation online that a B-52 Stratofortress had departed Sicily. However, available evidence indicates that no B-52 was operating from Sigonella and that the aircraft involved was in fact a P-8A.

What Is an ICAO Hex Code?

Every aircraft equipped with a Mode S transponder is assigned a unique 24-bit identification number, commonly known as an ICAO hex code.

This code is transmitted through ADS-B and Mode S systems and is used by tracking platforms to identify aircraft. In normal circumstances, the hex code remains uniquely associated with a specific airframe throughout its service life.

When a military aircraft transmits an incorrect, temporary, or reassigned hex code, tracking websites can mistakenly identify it as another aircraft entirely.

That appears to be what happened today.

Why Misidentifications Matter

Military aircraft occasionally transmit unusual or unexpected identification data for technical, operational, or administrative reasons. In some cases, transponder settings may be incorrectly configured; in others, temporary testing or maintenance activities can result in unexpected emissions.

For open-source intelligence (OSINT) observers, however, these anomalies can have significant consequences.

The appearance of a B-52 over the central Mediterranean would immediately attract attention because the bomber remains one of the United States’ principal long-range strike platforms. Reports of a B-52 deployment to Sicily would inevitably trigger speculation about possible military operations, force posture changes, or preparations for regional contingencies.

In this case, the incorrect hex code created exactly that effect, generating rumors of a bomber presence where none appears to have existed.

Not an Isolated Incident

The anomaly observed today is not an isolated case. As shown in the table attached to this article, the same P-8A has been tracked on nearly 20 separate occasions during 2026 while transmitting the very same ICAO hex code normally associated with a B-52 Stratofortress.

Each time, flight-tracking platforms incorrectly identified the aircraft as a B-52, despite the flight profile, operating base, and mission pattern clearly corresponding to a U.S. Navy P-8A Poseidon. The recurrence of these events suggests that this is not a temporary error linked to a single flight, but rather a persistent issue affecting this particular aircraft’s transmitted identification data.

For analysts and aviation enthusiasts, the episode underscores the importance of looking beyond the aircraft label displayed by tracking websites. While the hex code pointed to a strategic bomber, the aircraft’s actual behavior consistently revealed a maritime patrol aircraft operating from NAS Sigonella and other locations routinely used by the U.S. Navy.

Today’s rumors of a B-52 departure from Sicily therefore appear to be the latest example of a recurring tracking anomaly that has repeatedly generated confusion throughout 2026.

A Reminder About Military Tracking

Today’s incident highlights an important lesson for anyone following military aviation through ADS-B data: a transponder return alone is rarely sufficient to confirm the identity of an aircraft.

Analysts routinely combine multiple indicators—including callsigns, flight profiles, departure locations, historical movements, visual confirmation, and known deployment patterns—before drawing conclusions.

As military activity across the Eastern Mediterranean and Middle East continues to attract close scrutiny, such anomalies serve as a reminder that not everything displayed on a tracking screen should be taken at face value. In the coming days, as U.S. aircraft continue to transit through Sigonella toward operational theaters further east, careful verification will remain essential to distinguish genuine deployments from tracking artefacts.