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Old 22nd February 2021, 11:06   #11
stevestrat
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One of my favourite series, Air Crash Investigation.

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Yeah, just don't watch it before you fly off on holiday! The video of the engine post explosion is frightening.

One of the passengers said "A lot of people couldn't see the engine on that side, right, so I was a little more freaked out because I could see it, and I knew that was not right," . . . . good that they had an expert onboard
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Old 22nd February 2021, 11:13   #12
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Originally Posted by WillyHeckaslike View Post
Just caught it on a TV news channel. Not sure why the engine was still there as they are designed to shear and clearly that jet would have been better off without it after such a failure.
But would you want an engine of this size and weight in your bedroom/living room/bathroom et al.?

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Old 22nd February 2021, 12:35   #13
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Originally Posted by WillyHeckaslike View Post
Just caught it on a TV news channel. Not sure why the engine was still there as they are designed to shear and clearly that jet would have been better off without it after such a failure. Sadly, some crews on a flight deck don,t cope too well with an engine down or out and the recent loss of a 737 in Indonesia looks likely to be a case in point. But well done to the crew in this case of a 777 for getting it safely down.
The shear pins are for location only and appear to take the thrust load. There are many more bolts holding the whole engine assembly to the wing. The shear pins protect the bolts from being under shear stress.

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Old 22nd February 2021, 13:18   #14
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It had the Pratt & Whitney engine option. Not a good day for P & W as a 747 using its engines also suffered an engine failure on the same day. Click
Yeah, but RR had that issue with a gas pipe/duct thinning excessively to the really, really hot temps. Quantas had the first failure (if I remember they shut the engine down just in time) but was evident in the rest of the fleet's engines and was responsible for grounding of fleet's until the component had been changed.

The GE engine might be just a one off!

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Old 22nd February 2021, 23:17   #15
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But would you want an engine of this size and weight in your bedroom/living room/bathroom et al.?
Well, what is the alternative if a wrecked engine destroys a wing or an aircraft? The choice as in many cases must be of damage limitation ... I would guess.

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The shear pins are for location only.
If the shear pins are for location only then surely by definition they serve no other purpose ... assuming that you are correct.

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The GE engine might be just a one off!
It might be if it were relevant to this thread. But, is it?
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Old 23rd February 2021, 07:38   #16
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The husband of one of my wife's friends is a ground engineer for one of the budget airlines. They never fly to a holiday even if it means a couple of days in the car to get there.

Apparently he can have several free flights a year but never uses them. I thought he was scared of flying but its not that and reckons if you knew how they were maintained I probably would not fly either. He also reckons we don't here about 90% of incidents.

There is a reason most budget airlines don't do long haul and its not because there is no demand he reckons.
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Old 23rd February 2021, 07:56   #17
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The flight crew were calm but then if everything else is working, for them it may not be much of an incident, for us, it is terrifying.

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Old 23rd February 2021, 10:52   #18
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Old 23rd February 2021, 11:21   #19
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Quote:
Originally Posted by WillyHeckaslike View Post
Well, what is the alternative if a wrecked engine destroys a wing or an aircraft? The choice as in many cases must be of damage limitation ... I would guess.

If the shear pins are for location only then surely by definition they serve no other purpose ... assuming that you are correct.

It might be if it were relevant to this thread. But, is it?
"If the shear pins are for location only then surely by definition they serve no other purpose ... assuming that you are correct." I did however also say the shear pins releave the bolts of any shear force.
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Old 23rd February 2021, 11:28   #20
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Quote:
Originally Posted by WillyHeckaslike View Post
Well, what is the alternative if a wrecked engine destroys a wing or an aircraft? The choice as in many cases must be of damage limitation ... I would guess.

If the shear pins are for location only then surely by definition they serve no other purpose ... assuming that you are correct.

It might be if it were relevant to this thread. But, is it?
Item 1 - Yes, everyone has a perception for this issue. One could easily say it would be o.k. to land on a school (obviously pre-covid). In other words, the collateral damage and death toll could exceed the passenger numbers on board.

Item 3 - Personally I would think so but again it is an objective thing for each person. The engine nacelle is supposed to contain a engine exploding.

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