️<unk>️<unk>️<unk>️  ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Passengers said the pilot and first officer were unable to breathe without the masks as halon - a liquefied, compressed gas - filled the confined space as the plane flew from London Stansted Airport to Valencia.<unk> Passengers said the pilot and first officer were unable to breathe without the masks as halon - a liquefied, compressed gas - filled the confined space as the plane flew from London Stansted Airport to Valencia.<unk> Passengers said the pilot and first officer were unable to breathe without the masks as halon - a liquefied, compressed gas - filled the confined space as the plane flew from London Stansted Airport to Valencia. TV presenter and professional sailor Hannah White said that passengers suspected there was a serious problem, but they did not know the reason for the emergency landing until they arrived at Barcelona-El Prat Airport. Ryanair flight FR8321 was met by fire trucks when it landed at Barcelona-El Prat Airport.<unk> Hannah spoke told MailOnline Travel as she and other passengers sat on the plane while the pilot and co-pilot were checked over by medical staff.<unk> Hannah spoke to told MailOnline Travel as she and other passengers sat on the plane while the pilot and co-pilot were checked over by medical staff. One of the fire extinguishers in the cockpit went off and it<unk>got halon gas, which is very dangerous, and as a result the pilot and first officer could not breathe<unk>. Ryanair described it as a minor fault involving a fire extinguisher and said the flight crew followed standard procedure by putting on their masks.<unk> Ryanair described it as a minor fault involving a fire extinguisher and said the flight crew followed standard procedure by putting on their masks. Hannah added: <unk>The oxygen masks deployed [for the flight crew] and we dropped down to a very low altitude. When [the pilot] came over the tannoy to talk to us you could hear them breathing through the oxygen masks. <unk>When [the pilot] came over the tannoy to talk to us you could hear them breathing through the oxygen masks. Passengers said they were unaware of the reason for the emergency landing but knew it was serious.<unk> Passengers said they were unaware of the reason for the emergency landing but knew it was serious. TV presenter and professional sailor Hannah White tweeted a photo of fire trucks on the asphalt. (TV presenter and professional sailor Hannah White tweeted a photo of fire trucks on the tarmac) La première chose que nous avons entendue était "atterrissage d'urgence", répété trois fois par le capitaine, ce qui indique qu'il y a un problème majeur.<unk> ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ C'est clair que quelque chose n'allait pas. I would have to say the whole situation was dealt with amazingly and professionally.<unk> ąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąą
Plane was flying from London Stansted Airport to Valencia, Spain.<unk> Plane was flying from London Stansted Airport to Valencia, Spain. Pilot heard breathing through oxygen mask while making announcement. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk>