The documentary, scheduled for broadcast Monday on Channel 4, followed an investigation of two undercover reporters who spent five months secretly filming Ryanair flights as well as some staff training, the Daily Telegraph reported Saturday.
However, Ryanair's Chief Executive Michael O'Leary has dismissed the allegations and said the airline had an unblemished 20-year safety record.
"We have replied to all allegations made and have copied all of this correspondence at every stage to the relevant aviation regulatory authorities in the United Kingdom and Ireland, (the Civil Aviation Authority and Irish Aviation Authority) and they have also confirmed that they can find no substance to any of these written allegations."
The airline used its Web site to publish the correspondence it had with the program's makers, Steve Boulton Productions.
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