we embarked in Manchester 2 weeks ago heading for Barcelona, kit was Jet2, the flight took off I was at the Port window seat, after a while I was looking out of the window and noticed a small area the size about an Inch on the top of the engine cowling, we had the same plane on our return & was seated in the same paid seats, I emailed Jet2 with my observation & did not make a big issue of it as there was numerous other Rivets all around the Cowling but thought I would mention this, 2 emails later no response, I until now thought Jet2 was a very good airline but after this issue I wonder.
When you look at the Planes engine there is a Stainless Steel Cowling that surrounds the front of the Engine as you look at it from the front, the tear was at the very top and was visible from my seat.
I have vivid memories from about 40 years ago of sitting at Heathrow on the BA flight to Gib and a man was on the wing hammering something, I had to stop OH getting off!