A Boeing 727, which was not authorized to fly, mysteriously took off without a trace, sparking theories about a “flying bomb” and hostage-taking.

Just before sunset on May 25, 2003, an old Boeing 727 carrying two men, Ben Charles Padilla and John Mikel Mutantu, took off from Quatro de Fevereiro airport in Luanda, Angola. Ben was an American aeronautical engineer and private pilot.

The plane soared into the sky without any onboard lights, no flight plan, and no response to signals from air traffic control. Its transponder was switched off, and within minutes, it disappeared from radar screens as it flew southwest over the Atlantic Ocean.

The plane, flight number N844AA, and the two men on board were never seen again.

The Boeing 727 took off from Quatro de Fevereiro International Airport in Angola and disappeared as it headed out over the Atlantic Ocean. Photo: The Sun

More than 20 years later, this disappearance remains one of the most perplexing mysteries in modern aviation, giving rise to numerous theories ranging from organized crime and insurance fraud to terrorism and hostage-taking.

Ben’s brother, Joseph B. Padilla Sr., rejected the idea that Ben stole the plane. Instead, he believed the plane had been hijacked. Joseph said, “I truly believe that Ben was taken hostage and held against his will, possibly murdered.”

Disappeared into the night.

The Boeing 727 was built in 1975 and served American Airlines for 25 years before being converted to cargo aircraft. By 2003, it was deemed obsolete for passenger transport but remained fully airworthy.

Following a failed resale attempt, the aircraft was grounded in Angola. Sitting idle for over a year, it incurred millions of dollars in losses due to parking and airport service fees amid a dispute over ownership. Reports describe a series of companies vying for ownership of the Boeing, further complicating debt recovery efforts.

Despite the situation, aviation expert Julian Bray said the Boeing had clearly been well-maintained and was ready for takeoff, adding that the aircraft could not have taken off without thorough preparation.

Mr. Bray explained that, under normal circumstances, airports prevent aircraft involved in a dispute from taking off by disabling them, including blocking or locking the nose wheels so the aircraft cannot move on the runway. But that did not happen at Luanda, so the aircraft was able to taxi on the runway without any obstruction and without needing permission.

On the evening of the incident, witnesses reported that the aircraft moved erratically as it approached the runway, then lined up and took off on its own.

One reason this aircraft was able to slip through rigorous inspection was its cargo role. Converted from a passenger plane, it had a large cargo door on the side, and frequent passenger traffic seemed commonplace.

“If everyone is working on the plane, then you won’t see anything unusual. In fact, nobody would be looking inside the plane because they wouldn’t care,” Bray explained.

This raises suspicions that the plane may have been used to transport illegal goods, such as drugs.

The American Airlines Boeing 727 disappeared in 2003. Photo: The Sun

The Boeing reportedly had about 14,000 gallons of fuel on board at the time of takeoff, enough for a range of about 1,500 miles (over 2,400 km). “You can’t take off if your fuel tank isn’t full,” Bray said, suggesting this was a deliberate plan rather than an impulsive defection.

By switching off its transponder and radio systems, the aircraft effectively erased itself from the tracking network. Without air traffic control flight plans or information being handed over to air traffic control, the aircraft became invisible.

The Boeing headed southwest, toward the vast oceans or the remote regions of Africa with abandoned runways from the war era.

Drugs, crime, or terrorism?

Speculation about the reasons for the plane’s disappearance began circulating almost immediately after it took off from the runway. Some believed the Boeing was stolen for use in organized crime, potentially for transporting high-value contraband such as drugs. Others pointed to the tense context following the 9/11 terrorist attacks in the US, less than two years prior, raising concerns that the plane could be used as a weapon.

The disappearance of the plane quickly attracted the attention of U.S. military and intelligence officials, leading to an intense search as they believed it could be a “flying bomb”.

Mastin Robeson, a former U.S. Marine Corps general who was commanding U.S. military operations in the Horn of Africa at the time, said news of the missing Boeing “came through the intelligence network.”

Robeson said the uncertainty surrounding the aircraft’s purpose was so serious that the U.S. Central Command had considered deploying fighter jets to Djibouti, where U.S. forces are operating alongside French troops.

He added: “It’s unclear whether it was stolen for insurance purposes by the owner himself, or stolen with the intention of selling it to criminals, or as part of a deliberate terrorist plot. There is speculation about all three possibilities.”

No explosions or attacks were reported.

The hostage hypothesis

Ben, an American aerospace engineer and private pilot, and John, a mechanic reportedly from the Democratic Republic of Congo, were both permitted to work on aircraft. However, neither had a Boeing 727 pilot’s license – a type of aircraft that typically requires a three-person crew.

Expert Bray stated that, despite the inherent risks, controlling this aircraft is still feasible. “If someone has a pilot’s license, they know the principles of flying,” Bray explained, comparing it to operating a vehicle without a license for that specific type of vehicle. He added that a pilot and a mechanic on board already constitute a “viable flight crew.”

One of the most disturbing theories is that these two men did not act voluntarily.

Those who support the hostage theory suggest that someone may have been on the plane to ambush them, threatening to force the plane to take off. According to Bray, there have been cases in the past where criminals kidnapped relatives to exert pressure.

The family said Ben spent weeks in Angola overseeing the overhaul of the aircraft and preparing for the return flight – bringing the plane back to the lessor.

According to Ben’s brother, the Boeing had undergone a thorough inspection and was declared airworthy – contrary to initial reports suggesting it had been abandoned or neglected.

Joseph stated that his brother did not have a Boeing 727 pilot’s license and never intended to fly this type of aircraft. Ben worked as an aeronautical engineer and mechanic and was responsible for recruiting qualified pilots and co-pilots for the planned flight.

Ben Charles Padilla, an American aeronautical engineer and private pilot, was one of two people who went missing with the plane. Photo: The Sun

Joseph believed the plane had been hijacked while Ben was inspecting the engines near the runway, meaning there may have been people on board beforehand.

Joseph also mentioned that Ben had told family members that if he were ever hijacked during the 9/11 attacks, he would try to crash the plane into something rather than let it be used as a weapon.

The family said Ben had kept in touch with them right before the plane disappeared. He promised to call back after hearing that his mother had suffered a heart attack. But that call never came.

The most likely hypothesis

Despite investigations involving U.S. authorities, including the FBI and CIA, there has been no confirmed sighting of the aircraft or debris.

Mr. Bray believes the most plausible explanation is simple: “I think it landed somewhere,” perhaps a remote landing strip, and was then dismantled, hidden, or abandoned. Another theory is that the plane continued flying until it ran out of fuel, and was then discarded.

Regardless, the Boeing 727 that quietly took off into the skies over Angola remains missing, with no wreckage, no answers, and no clear conclusion.