A plane from the US Air Force disappeared from radar over the English Channel for an hour in the early hours of Wednesday morning.
The Boeing KC-135R Stratotanker declared an emergency 15 minutes into its flight from Amiens, France, at 12.20am.
Its last known sighting was between Dover and Calais before it landed an hour later back at its base at RAF Mildenhall in Suffolk, reports the Independent.
The Boeing plane is used to refuel jets mid-flight and can carry up to 31,000 gallons of fuel.
According to the Metro, RAF Mildenhall said: "KC-135 Stratotanker with call sign QUID 72 experienced an in-flight emergency at approximately 12.20 am today (Wednesday). It safely returned to RAF Mildenhall at 1.20 am. There were no injuries.
"Safety is paramount to the success of our mission. The Air Force's stringent safety standards help ensure the well-being of our people and the communities we interact with."
The Express reports that neither the RAF or USAF was prepared to comment further on the details of the incident.
The Daily Mail reports that the US Air Force has been using Boeing KC-135R aircraft since the 1950s.
It adds that in 2013 three US airmen were killed when their military refuelling tanker crashed in the mountains of Kyrgyzstan.
15 flights from hell
US Air Force jet 'disappears' over the English Channel
We've heard of vomiting bugs in hotels and cruises but rarely on a plane. On a flight from Chile to Sydney in August 2013, 26 passengers became violently ill with gastroenteritis after celebrating at a festival in Brazil and picking up the bug before boarding the plane. Some of the passengers were taken to hospital once the plane landed in Sydney and the plane had to be quarantined and disinfected upon arrival. This is one flight we're really glad we weren't on as the Boeing 747-400 only had eight toilets and the group developed vomiting and diarrhoea.
When you're on a long (and pricey) trans-Atlantic flight, the one thing you don't want to happen is for the plane to run out of toilet paper. Unlucky for passengers on a United Airlines flight from London to San Francisco in June 2013, the toilets ran low on tissue after the airline forgot to restock its supply. The passengers were forced to use cocktail napkins instead of loo paper when nature called and were allegedly told to use what they had brought on board for the 10-hour flight. That's one way for an airline to find itself deep in poo!
We all hate flight delays and even a few hours can leave us peeved, but holidaymakers on a Monarch Airlines plane from Tenerife were stranded on the Canary Island for a whopping 50 hours in August 2012 when their plane suffered a fault. The crew discovered a problem with the door hatch and asked passengers to get off the plane and wait for three hours. They then spent another hour on the plane before being put up in a hotel. A replacement plane eventually flew them to Birmingham.
When a pilot accidentally locked himself in the toilet of a New York-bound flight in 2011, he ended up causing a mid-air 'terror' panic too. When a well-meaning passenger heard the pilot trying to get out of the loo, he offered to help. The pilot asked the man to go to the cockpit and inform the crew of the situation, but the co-pilot was completed spooked by the man's "thick Middle Eastern" accent and refused to let him in, calling a state of emergency. Fighter planes were alerted at the arrival airport and the co-pilot was told to "just get on the ground". When he managed to break out of the toilet the pilot assured air traffic control that there was no threat. But the FBI still waited to meet the plane when it landed and spoke to the poor passenger who just wanted to help.
If you're a non-smoker, you won't be able to think of anything worse than a smoker lighting up a cigarette next to you on a flight. Three Canadian passengers on a Sunwing flight did just that in February 2013 - even though smoking has been banned on aircrafts for more than 15 years. And what's more, they refused to put their cigarettes out and ended up diverting the flight, which was travelling from Halifax to the Dominican Republic, to Bermuda. When the plane landed, their passports were seized by police, while the other passengers continued their journey.
There are times when the pilots are up against nature and have absolutely no control over a situation, such as when lightning strikes. In January 2013, a Turkish Airlines flight carrying 114 passengers was struck by lightning. A passenger filmed the incident, which saw sparks from the plane's engine as it caught fire and the cabin lights flickering on and off. Fortunately, despite the plane catching fire mid-air, it made a safe emergency landing and no-one was injured.
One emergency landing is enough but could you handle two on one flight? That's what "terrified" passengers on a British Airways flight from Saudi Arabia to London endured in August 2013. First the plane was delayed for five hours and in the air for about 40 minutes before making an emergency landing because of a problem with the plane's wing flaps. Then the next day when the passengers boarded the same plane, the problem reoccurred and the flight was aborted a second time. Passengers were reportedly "physically sick and crying" during the landings as the plane had to circle the desert to dump around 20 tonnes of fuel to be the correct weight to land safely.
If the sound of babies crying on a flight is disruptive enough to your journey, you certainly wouldn't have enjoyed the American Airlines flight from Los Angeles to New York, which saw an "unruly" passenger repeatedly sing Whitney Houston's I Will Always Love You. We've watched the video and the woman is no Whitney Houston! She ended up being handcuffed and removed from the flight - but not before putting the other passengers off Whitney's music for life!
Thought a naughty child kicking your chair was bad? In August 2013, 30 adults created the flight from hell when they ran riot on a Ryanair flight from Prestwick to Ibiza, swearing, threatening and even sexually harassing crew in front of other holidaymakers, including families with young children. The men were warned by police about their behaviour before boarding but this didn't stop their drunken rampage, which saw them shouting and jumping on the seats too.
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Weird things you can take on a plane
US Air Force jet 'disappears' over the English Channel
Fancy spending the duration of your flight knitting? They might look like the type of thing airport security would confiscate but knitting needles are permitted on board. You'll want to leave the your cutting tools at home though, unless your scissors are blunt with blades no longer than 6cm.
Carrying your beautiful wedding cake on a flight isn't the best way to preserve it for your big day but you are allowed to travel with it as your carry-on - as long as it fits in the overhead locker! Heathrow Airport says: "You can take most solid foods, including wedding cake, in your hand baggage if you wish. Foods in sauces or dishes containing a lot of liquid will have to be in containers of 100ml or less, and placed inside a single transparent, resealable plastic bag of a capacity no greater than 1 litre."
This might be surpring for non-hunters but in America, the Transportation Security Administration (TSA) allows travellers to carry antlers through aiport security and almost all US airlines allow them on board. Most will charge a small fee and ask that the anterles are cleaned and for the skull to be wrapped.
Whether you're a smoker or planning on lighting a few candles on your romantic break, you can carry one lighter on board. The UK government website says: "You should put it inside a resealable plastic bag (like the ones used for liquids), which you must keep on you throughout the flight." You can’t put it in your hold luggage or put it in your hand luggage after screening.
Travelling with Etihad Airways? Then your falcon can perch on your lap, too. While the Middle Eastern airline is happy to accommodate flyers who have one pet falcon, you will have to buy a first class ticket if you have two of the birds. Etihad says: "We accept the carriage of falcons in the main aircraft cabin provided that all the necessary documents have been obtained. We also accept falcons as checked baggage."
While some airports will allow Christmas crackers though security as long as they are in their original packaging but you will want to check with your airline if you can carry them on board, too. easyJet allows up to two boxes providing they are seals but warns passengers to check which novelty items they contain as "some crackers contain novelty items – such as sharp objects – that are not permitted onboard as cabin baggage".
Ashes carried in urns can go in your cabin baggage providing the urn is made of wood, cardboard or plastic, as it may not be possible for metal urns to be x-ray screened.
Some airlines will allow you to carry your bowling equipment in lieu of a piece of carry-on baggage. Virgin Atlantic says: "You’re welcome to bring your lucky bowling ball and shoes with you next time you fly Virgin Atlantic. As long as your bowling case doesn’t exceed 23kg, we’ll fly it at no extra charge – in addition to your free baggage allowance." US Airways allows its passengers to carry up to three bowling balls, one bowling bag and bowling shoes.
Spending Christmas abroad? Some airlines will make special accommodations for travellers taking their tree. Your fellow passengers might not be impressed with you dragging an evergreen through the airport. Flybe says: "There are no restrictions placed on passengers by Flybe as an airline with regards to the carriage of plants or trees. If you wish to carry a small plant, this can be carried in the cabin; alternatively this can be placed in the hold and must be properly packed."
If you're a nervous flyer, you might find comfort in carrying your own parachute on your next flight. Passengers travelling with Ryanair are told: "Parachutes of any type, recreational or sports type or paragliding wings (also known as 'canopy') can be accepted for carriage as checked-in or carry-on baggage subject to the standard restrictions for size and weight. These packs may contain an auxiliary or emergency 'chute' and a barometric mechanical activating (auto-release) device. These accessories are acceptable for check-in."
Miniature horses, along with pot-bellied pigs and monkeys, are allowed on flights if they offer passengers "emotional support". A manual from America's Department of Transportation describes them as "commonly used service animals", but that US airlines "are not required to carry certain unusual service animals in the aircraft cabin such as ferrets, rodents, spiders, snakes and other reptiles".
Don't panic if you spot mysterious vapours appearing from a fellow passenger's hand luggage. Some airlines will allow you to carry dry ice to preserve food or medicine. easyJet says: "You can carry a maximum of 2.5kgs of dry ice in your cabin bag as long as it is only used to preserve perishable items that are not classed as dangerous goods."