2006 transatlantic aircraft plot

Discovery and surveillance

The plot was uncovered through an extensive surveillance operation led by the British Metropolitan Police, which became the largest of its kind in UK history. The investigation intensified in June 2006 after Abdulla Ahmed Ali returned from Pakistan and police covertly searched his luggage, finding powdered soft drink (Tang) and a large number of batteries. This discovery prompted the involvement of an additional 220 officers from other forces to monitor the suspects. Surveillance teams observed suspect Assad Sarwar purchasing unusual quantities of materials and disposing of empty hydrogen peroxide bottles at a recycling centre.

Authorities watched meetings between Sarwar and Ali in an east London park. MI5 agents covertly entered a flat used by Ali and discovered what appeared to be a bomb factory, leading them to install hidden cameras and microphones. On 3 August 2006, Ali and Tanvir Hussain were filmed constructing devices from drink bottles inside the flat. Later, surveillance officers watched Ali spend two hours in an internet cafe researching flight timetables, solidifying the connection to aviation. The investigation reached a critical point in early August, with police believing the plotters were moving toward execution.

Arrests and initial charges

On the night of 9 August 2006, British police arrested 24 people in coordinated raids across London, Birmingham, and High Wycombe. The key suspects were British-born Muslims, some of Pakistani descent, including three recent converts to Islam. Firearms officers were not involved in the arrests. Following the initial detentions, eight suspects were charged with conspiracy to murder and commit acts of terrorism. A further three were charged with failing to disclose information about acts of terrorism, and one youth was charged with possession of articles related to a terrorist act. Others were released without charge.

Police conducted 69 searches of residences, businesses, vehicles, and open spaces. They recovered potential bomb-making equipment and chemicals, including hydrogen peroxide, along with over 400 computers, 200 mobile phones, and 8,000 items of removable storage media like memory sticks and DVDs. Deputy Assistant Commissioner Peter Clarke stated that six terabytes of data were extracted from computers alone, requiring many months to analyse. A critical piece of evidence was a memory stick belonging to Abdulla Ahmed Ali that listed scheduled flights from American Airlines, United Airlines, and Air Canada.

The planned attack method

The plotters intended to use peroxide-based liquid explosives, specifically acetone peroxide (TATP), which is sensitive to heat, shock, and friction. According to the prosecution, each bomber would board a plane with the necessary ingredients and equipment disguised as everyday items. They planned to construct the explosive devices mid-flight. The hydrogen peroxide explosive would be placed in 500 mL plastic bottles of Oasis and Lucozade soft drinks. To disguise it, a sugary drink powder like Tang would be mixed with the hydrogen peroxide to colour it, resembling a normal beverage.

The mixture would be injected into the bottles with a syringe through a small hole in the bottle, which would then be resealed, allowing the device to appear as an unopened drink during airport security screening. A second, smaller explosive would be hidden within an AA battery casing to act as a detonator. This charge would be triggered by linking the bottle to a light bulb and the flash unit from a disposable camera. The method was similar to that used in the failed 21 July 2005 London bombings. Government scientists later tested the design and demonstrated it could produce an explosion powerful enough to blow a hole in an aircraft fuselage.

Targeted flights and destinations

The conspirators had researched specific transatlantic flights departing from London Heathrow Airport. Prosecutors stated the suspects had talked about involving up to 18 suicide bombers and had examined Denver, Boston, and Miami as possible destinations. Details of targeted flights were found on USB flash drives. The listed flights included United Airlines services to San Francisco and Chicago, American Airlines flights to New York and Chicago, and two Air Canada flights bound for Canada.

The Air Canada flights specifically targeted were Flight 849 to Toronto Pearson Airport and Flight 865 to Montreal Trudeau Airport. Both flights were scheduled for afternoon departures from London Heathrow Airport on Airbus A330 aircraft. The prosecution alleged the plan was to blow up at least seven airliners in what would have been the largest terrorist attack since September 2001. The suspects had examined Denver, Boston, and Miami as possible flight destinations along with the specific flights. Details of these flights were found on USB flash drives belonging to the suspects.

Trials and convictions

The legal process involved three major trials at Woolwich Crown Court spanning several years. The first trial occurred from April to September 2008. The jury failed to reach a verdict on the most serious charge of conspiracy to kill by blowing up aircraft. However, they found three men, Abdulla Ahmed Ali, Assad Sarwar, and Tanvir Hussain, guilty of conspiracy to murder. One other defendant was acquitted of all charges.

A second trial in September 2009, involving seven of the original accused plus an additional man, resulted in three men being found guilty of conspiracy to kill by blowing up aircraft and one other guilty of conspiracy to murder. The additional man was exonerated of all terrorism charges. In a third trial during July 2010, a further three of the accused were found guilty of conspiracy to murder. In total, of the nine men tried, seven were found guilty on various conspiracy charges and two were acquitted. Police believed the evidence presented was the strongest ever put before a jury in a UK terrorism case.

International context and alleged mastermind

British and American intelligence officials believed the cell was directed by al-Qaeda leaders in Pakistan. The alleged mastermind was Rashid Rauf, a British man of Pakistani descent from Birmingham, who was believed to have connected the plotters with al-Qaeda's leadership. Rauf was arrested in Pakistan in August 2006. His arrest, reportedly urged by the United States, caused UK police to bring forward their own arrests, fearing the cell would flee or accelerate their attack if they learned of his capture.

Pakistani authorities interrogated Rauf, and the UK sought his extradition. However, a Pakistani judge dropped terrorism charges against him in December 2006 due to lack of evidence, transferring his case to a regular court on lesser charges like forgery, which were later dismissed. Rashid Rauf was reported killed in a US drone strike in Pakistan in November 2008. Press reports also alleged the plotters were funded by charities intended for victims of the 2005 Kashmir earthquake and that Rauf had links to the banned militant group Jaish-e-Mohammed.

Immediate security repercussions

The disruption of the plot triggered immediate and unprecedented security measures at airports worldwide. In the UK, the terror threat level was raised from 'Severe' to 'Critical', indicating an attack was believed imminent. It was reduced to 'Severe' on 14 August 2006. Initially, passengers were forbidden from carrying any liquids except baby milk onto flights between the UK and US. All hand luggage was banned except for essential documents and wallets, with restrictions at major airports like Heathrow and Gatwick lasting for days.

In the United States, the Homeland Security Department banned all liquids and gels from carry-on luggage except baby formula and prescription medicines. Gate checkpoints were introduced at US airports where passengers could previously buy drinks after security. These extreme measures caused widespread chaos and delays. Some restrictions were relaxed in September and November 2006, but a core prohibition on containers larger than 100 mL in carry-on baggage became a permanent global standard. As of 2026, this restriction remained in effect at most airports worldwide, though advanced CT scanners were beginning to allow for relaxations.

Political response and controversy

The plot was discussed at the highest levels of government. Prime Minister Tony Blair, on holiday at the time, had been aware of the investigation for months and had discussed it with US President George W. Bush on several occasions. Blair was briefed on the raid beforehand and briefed President Bush overnight. The public announcement was made on 10 August 2006 by Home Secretary John Reid and Transport Secretary Douglas Alexander. President Bush later called the arrests a stark reminder that the nation was at war with 'Islamic fascists'.

Disagreements emerged between US and UK officials over the timing of the arrests. Some British officials believed an attack was not imminent, as suspects had not purchased airline tickets and some lacked passports, and they wanted more surveillance to gather evidence. US officials reportedly pressured for earlier action. Former Vice President Dick Cheney was reported to have ordered Rauf's arrest in Pakistan in an attempt to provide 'good news' before the 2006 US mid-term elections. Some commentators expressed initial scepticism about the plot's viability, referencing past intelligence failures, though later trial details confirmed the method was workable.

Questions about 2006 transatlantic aircraft plot

What was the 2006 transatlantic aircraft plot?

The 2006 transatlantic aircraft plot was a terrorist conspiracy to detonate liquid explosives aboard multiple passenger airliners flying from the United Kingdom to the United States and Canada. The plotters planned to smuggle bomb components disguised as soft drinks and assemble the devices mid-flight. The plot was disrupted by British police in August 2006 after an extensive surveillance operation. It led to major changes in global aviation security, including lasting restrictions on liquids in carry-on luggage.

Were flights to Canada targeted in the plot?

Yes, flights to Canada were directly targeted. The plotters had researched specific flight schedules and listed them on a memory stick. Two Air Canada flights from London Heathrow were among the intended targets: Flight 849 to Toronto Pearson Airport and Flight 865 to Montreal Trudeau Airport. This direct targeting of Canadian destinations meant the plot had significant implications for Canada's aviation security and its cooperation with international counterterrorism efforts.

How did the plot change airport security?

The plot led to immediate, severe restrictions on what passengers could carry onto planes. Initially, all liquids except baby milk were banned, and hand luggage was severely limited. These rules were gradually relaxed, but a permanent global standard emerged limiting liquids in carry-on bags to containers of 100 mL or less. As of 2026, this rule was still in effect at most airports worldwide, though the introduction of advanced CT scanners has begun to allow for a relaxation of these stringent measures.

What happened to the people behind the plot?

British police arrested 24 suspects in August 2006. Following three major trials between 2008 and 2010, seven of nine men tried were convicted on charges including conspiracy to murder and conspiracy to kill by blowing up aircraft. Key convicts included Abdulla Ahmed Ali, Assad Sarwar, and Tanvir Hussain. The alleged mastermind, Rashid Rauf, was arrested in Pakistan but had terrorism charges dropped there due to lack of evidence. He was later reported killed in a US drone strike in Pakistan in November 2008.

What kind of bombs were they planning to use?

The plotters planned to use liquid explosives based on hydrogen peroxide and acetone peroxide (TATP). The explosives were to be disguised inside 500 mL plastic soft drink bottles, coloured with a powder like Tang to look like normal beverages. A smaller explosive hidden in an AA battery casing would act as a detonator, triggered by a circuit involving a light bulb and a disposable camera flash. Government tests showed this method could produce an explosion powerful enough to breach an aircraft's fuselage.

Was there a connection to al-Qaeda?

British and American intelligence officials believed the plot was al-Qaeda-inspired and that the cell was directed by al-Qaeda leaders in Pakistan. The alleged mastermind, Rashid Rauf, was believed to have connected the British plotters with al-Qaeda's leadership. Martyrdom videos recovered from some suspects included extracts from a fatwa by Osama bin Laden. The US Secretary of Homeland Security at the time stated the plot was 'suggestive of an al-Qaeda plot'.

Sources: Wikipedia and current public reporting, checked by the Nosy Mag desk. Last updated 2026-10-20.