Crawfie Posted November 23, 2020 Report Share Posted November 23, 2020 Sorry end to a gentle giant ... IMG_2905.MP4 Quote Link to post Share on other sites
RogerH Posted November 23, 2020 Report Share Posted November 23, 2020 Oh dear, well it wasn't me. Roger Quote Link to post Share on other sites
Crawfie Posted November 23, 2020 Author Report Share Posted November 23, 2020 4 minutes ago, RogerH said: Oh dear, well it wasn't me. Roger Prove it !!!! Quote Link to post Share on other sites
RogerH Posted November 23, 2020 Report Share Posted November 23, 2020 I'm in C19 lock down Roger Quote Link to post Share on other sites
Crawfie Posted November 23, 2020 Author Report Share Posted November 23, 2020 1 minute ago, RogerH said: I'm in C19 lock down Roger Ok ...good enough !! Quote Link to post Share on other sites
Misfit Posted November 24, 2020 Report Share Posted November 24, 2020 I wonder if it’s insured? Quote Link to post Share on other sites
Harbottle Posted November 24, 2020 Report Share Posted November 24, 2020 someone left the Pilot light on? Quote Link to post Share on other sites
Kiwifrog Posted November 24, 2020 Report Share Posted November 24, 2020 Thank god it was on the ground, there cant be a huge number of 747 still flying in passenger service compared to theit hayday. I am suprised BA has not asked for the video to be pulled Quote Link to post Share on other sites
Drewmotty Posted November 24, 2020 Report Share Posted November 24, 2020 BA don’t fly 74s any more. That one was being broken for spares when the fire occurred. Quote Link to post Share on other sites
Crawfie Posted November 24, 2020 Author Report Share Posted November 24, 2020 2 minutes ago, Drewmotty said: BA don’t fly 74s any more. That one was being broken for spares when the fire occurred. Apparently the scrappers had a little issue with the oxygen system in the cockpit !! I would’ve thought everything would had been “emptied “ first . Quote Link to post Share on other sites
openroad Posted November 24, 2020 Report Share Posted November 24, 2020 Plenty of Siren Noise, and not much action...sad to see this happen, But the scrappers rip them apart anyway I suppose. Conrad. Quote Link to post Share on other sites
RogerH Posted November 24, 2020 Report Share Posted November 24, 2020 Hi Folks, as an aside; the area where the fire has burnt through is not round like the rest of the fuselage but flat - very flat. It took from 1971 to the early 90's for this flat area to start cracking on the 747-100 series.. Flat pressurised panes are bad news, very bad news, There is a stringer just below the cockpit side windows that goes fore/aft. This is attached to the skin panels by countersink rivets. As the panel flexed due to pressurisation changes the sharp edge of the countersink in the panel started to crack. These cracks probably occurred 10 years or so after it started flying and proceeded to grow slowly but surely. BA were the lead aircraft owners to find these cracks when they appeared from under the countersink rivet head. They were found visually. When NDT were called in we could inspect under the heads and found not 1 or 2 cracks, as found visually, but dozens. There s probably 100 rivets per side. Effectively all the holes were cracked. Boeing's reactions was pretty poor in many ways. They didn;t want to do any repairs unless you could visually see the cracks. However BA decided as something needed doing to do it properly and repair the whole stringer/skin etc. The 200 series have the same structure and also needed modifying or repairing before the cracks became an issue. The much later 400 series were beefed up during production so didn't need inspection. What fun the flight crew would have had if the cockpit opened up like a convertible sports car - rather like a TR4/4A surrey top when the front comes adrift Roger Quote Link to post Share on other sites
Crawfie Posted November 24, 2020 Author Report Share Posted November 24, 2020 16 minutes ago, RogerH said: Hi Folks, as an aside; the area where the fire has burnt through is not round like the rest of the fuselage but flat - very flat. It took from 1971 to the early 90's for this flat area to start cracking on the 747-100 series.. Flat pressurised panes are bad news, very bad news, There is a stringer just below the cockpit side windows that goes fore/aft. This is attached to the skin panels by countersink rivets. As the panel flexed due to pressurisation changes the sharp edge of the countersink in the panel started to crack. These cracks probably occurred 10 years or so after it started flying and proceeded to grow slowly but surely. BA were the lead aircraft owners to find these cracks when they appeared from under the countersink rivet head. They were found visually. When NDT were called in we could inspect under the heads and found not 1 or 2 cracks, as found visually, but dozens. There s probably 100 rivets per side. Effectively all the holes were cracked. Boeing's reactions was pretty poor in many ways. They didn;t want to do any repairs unless you could visually see the cracks. However BA decided as something needed doing to do it properly and repair the whole stringer/skin etc. The 200 series have the same structure and also needed modifying or repairing before the cracks became an issue. The much later 400 series were beefed up during production so didn't need inspection. What fun the flight crew would have had if the cockpit opened up like a convertible sports car - rather like a TR4/4A surrey top when the front comes adrift Roger Like Arthur scargills “comb over “ in strong wind !!! Quote Link to post Share on other sites
RobH Posted November 24, 2020 Report Share Posted November 24, 2020 1 hour ago, RogerH said: What fun the flight crew would have had if the cockpit opened up like a convertible sports car - rather like a TR4/4A surrey top when the front comes adrift Like this 737 some years ago? Quote Link to post Share on other sites
RogerH Posted November 24, 2020 Report Share Posted November 24, 2020 Hi Rob, that was just the front cabin. Thankfully and unbelievably only one fatality - A stewardess standing in the aisle. If the cock[it unraveled I fear that the whole aircraft would have failed. Roger Quote Link to post Share on other sites
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