About 10 years ago, I was sitting, as I still do now, watching the comings and goings at Liverpool. A 737 lined up on rwy 27, then throttled up and rolled to take off...
...as I watched it through binoculars, I saw a panel, about (?) 10+ feet behind the wing, on the underside was most definitely OPEN!!
I phoned the airport on my mobile to tell them what I'd seen, never heard anything from it??
Any ideas?