Madam, - The recent near-catastrophe at Manchester Airport points up the highly dangerous practice of refuelling aircraft with passengers on board. For the sake of avoiding a few minutes delay the captive passengers are put at the risk of instant cremation. The advice to keep one's seatbelt unfastened for fear of an "accident" during refuelling is a grim reminder of the danger. - Yours, etc.,
PATRICK NOLAN, Booterstown, Co Dublin.