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Search: Posts Made By: scifi
Showing results 1 to 35 of 480
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Forum: Accidents and Close Calls
4th Apr 2024, 10:19
Replies: 31
Views: 11,989
Posted By scifi

False ILS

As an ex Radio Engineer, the fact that he was quite a bit to the right of the Hotel, suggests he was following a False ILS Signal. This would be produced by diffraction of the ILS Signal. ...
Forum: Accidents and Close Calls
31st Mar 2024, 20:50
Replies: 62
Views: 23,406
Posted By scifi

Once the pilot has allowed the nose to pitch up,...

Once the pilot has allowed the nose to pitch up, to an extent that he has lost sight of his reference spot on the horizon. He has lost his pitch attitude reference, and his Heading and Yaw...
Forum: Accidents and Close Calls
20th Mar 2024, 11:01
Replies: 1,950
Views: 935,415
Posted By scifi

Can of Worms..?

I think all this talk about if you can, or can not, 'Open' a plug is just so much semantics.
You can open many things; Windows can be opened, so can Boxes, even Discussions can be opened.
Being...
Forum: British Isles Aviation
11th Mar 2024, 16:43
Replies: 29
Views: 3,775
Posted By scifi

I once went with an IMC pilot on a 120 mile trip...

I once went with an IMC pilot on a 120 mile trip across the country, we got into cloud. After 10 minutes we had had enough and decided to call it a day, and to land at the nearest airstrip that was...
Forum: Accidents and Close Calls
7th Mar 2024, 11:30
Replies: 1,950
Views: 935,415
Posted By scifi

Don't work without the Paperwork..? Does this...

Don't work without the Paperwork..? Does this mean we have to have paperwork to polish the Plexiglass..?
Forum: Private Flying
7th Mar 2024, 11:25
Replies: 30
Views: 2,231
Posted By scifi

3rd Component.

Quote from Jan... which is normally solved by adding a third component,
So maybe all commercial aircraft should have 3 pilots.. Just in case one pushes whilst the other pulls..?
Forum: Private Flying
28th Feb 2024, 14:00
Replies: 3
Views: 869
Posted By scifi

How did you work out that you had a tailwind of...

How did you work out that you had a tailwind of 15kts...?
The wind is 285 at 15... Westerly wind.
You are going 026 degrees i.e. North.
Therefore you have a crosswind.... Recalculate your...
Forum: Accidents and Close Calls
27th Feb 2024, 11:49
Replies: 1,950
Views: 935,415
Posted By scifi

Smoking Guns

It might be more related to the fact that Cannabis is legal in that state...!
Forum: Private Flying
21st Feb 2024, 18:44
Replies: 19
Views: 2,942
Posted By scifi

Motorcycle connection.

There was also the famous 1964 Thruxton Velocette, that was a souped up 500cc Velocette Venom. This was made for the Thruxton 500 mile endurance race on the perimeter track.
Forum: Accidents and Close Calls
18th Feb 2024, 07:36
Replies: 195
Views: 86,711
Posted By scifi

Quote.... I started wondering if the grass...

Quote.... I started wondering if the grass median in the middle of the lanes would not have been the better option.. thoughts?

Well No.... Landing straight down the middle of the carriageway, in...
Forum: Accidents and Close Calls
15th Feb 2024, 13:36
Replies: 1,950
Views: 935,415
Posted By scifi

CVR. over-written.

I find it hard to believe, that in an age of multiple Gigabyte Memory Cards, that the CVR is limited to the last 2 hours of use. This is surely a political reason, and not just limited by...
Forum: Accidents and Close Calls
9th Feb 2024, 20:28
Replies: 1,950
Views: 935,415
Posted By scifi

When was it lifted..?

Some will still be wondering when the Plug was lifted out of alignment. I thought Jolts from running over Centre Line Lights could be sufficient, but it was pointed out that my other suggestion of...
Forum: Accidents and Close Calls
6th Feb 2024, 23:20
Replies: 1,950
Views: 935,415
Posted By scifi

G Forces

Quite right DaveReidUK...
Originally Posted by Europa01
Now we can see that the lift assist force is not enough to lift the door/plug even depressurised.
Well, more accurately, under 1g...
Forum: Accidents and Close Calls
28th Jan 2024, 09:22
Replies: 1,950
Views: 935,415
Posted By scifi

U+D and L+R..?

I think we all now know how the door/plug is located in the Up and Down direction, but nothing has been said about what locates it in the Left and Right direction, especially at the top, where it...
Forum: Accidents and Close Calls
24th Jan 2024, 20:02
Replies: 1,950
Views: 935,415
Posted By scifi

Interior Trim

I know they have found the door/plug, but have they found the interior trim panel yet..?
It might have floated much further away from the original site, or be hidden in the weeds.
Forum: Accidents and Close Calls
23rd Jan 2024, 16:25
Replies: 1,950
Views: 935,415
Posted By scifi

The Shadows

If you look at the shadow half way down the plug on the left, caused by the overlapping aluminium sheets. If the sheets are 2mm thick, the shadow looks to be 10mm. So is exaggerating the distance...
Forum: Accidents and Close Calls
21st Jan 2024, 10:54
Replies: 1,950
Views: 935,415
Posted By scifi

Springs

It is most likely an HSW 'Health and Safety at Work' issue, or OSHA in the States. Which limits the amount one person is allowed to lift to 25kg. So if the door weighs 100kg, then 75kg+ needs to be...
Forum: Accidents and Close Calls
19th Jan 2024, 09:34
Replies: 1,950
Views: 935,415
Posted By scifi

More Probabilities..

Seeing as we seem to be discussing Probabilities...
I wonder what the probability is of the NTSB having checked the airplane for any further loose bolts in the right hand side Plug-Door.
We might...
Forum: Accidents and Close Calls
17th Jan 2024, 10:21
Replies: 1,950
Views: 935,415
Posted By scifi

Hi TryingToLearn... I think you have a good...

Hi TryingToLearn... I think you have a good understanding of the workings of the door plug, especially the bit about the Coefficient of Friction of metal on metal being 0.2. I had originally...
Forum: Accidents and Close Calls
16th Jan 2024, 17:39
Replies: 1,950
Views: 935,415
Posted By scifi

Quote... Such a procedure would mean these...

Quote... Such a procedure would mean these adjustments need to be backed out every time the plug is opened, then repeated when the plug is closed. I think that is highly unlikely.
Every time the...
Forum: Accidents and Close Calls
16th Jan 2024, 12:16
Replies: 1,950
Views: 935,415
Posted By scifi

Looking at the photo of the recovered door plug,...

Looking at the photo of the recovered door plug, it looks as if the 12 restraining pads are not just pads, but are Adjustable Pads.
So my guess is that the closure procedure would be..
1./ Locate...
Forum: Accidents and Close Calls
16th Jan 2024, 11:36
Replies: 1,950
Views: 935,415
Posted By scifi

The springs only take a percentage of the weight...

The springs only take a percentage of the weight of the door plug, you would still need to lift it upwards to disengage it.
Forum: Accidents and Close Calls
13th Jan 2024, 12:08
Replies: 1,950
Views: 935,415
Posted By scifi

Quote.... Originally Posted by roger4 What...

Quote....
Originally Posted by roger4
What we really need is a nice clear video of the plug-door, and for contrast the E/E door, being opened from the inside!

My guess is that it is a two man...
Forum: Accidents and Close Calls
9th Jan 2024, 23:54
Replies: 1,950
Views: 935,415
Posted By scifi

Green Bits

Looking at the first photograph, the Green Bit is part of the door, not the frame of the aircraft. It must have been ripped from the door by aerodynamic forces, and by the explosive decompression. ...
Forum: Accidents and Close Calls
6th Jan 2024, 19:28
Replies: 1,950
Views: 935,415
Posted By scifi

Force on Door

Just to put some figures on the forces involved. If the door is 4ft by 3ft, then its area is 4x3x144, = 1728 square inches.
If the differential pressure is 5 psi, then the total force on the door...
Forum: Accidents and Close Calls
3rd Jan 2024, 18:05
Replies: 1,146
Views: 1,050,646
Posted By scifi

Just looking at the relevant Notam. It is a page...

Just looking at the relevant Notam. It is a page full of U/Ss, including the holding point C5 U/S, and the TW lighting U/S.
Forum: Private Flying
16th Dec 2023, 16:04
Replies: 82
Views: 20,568
Posted By scifi

Quote... 'Having a large fan on the front can...

Quote... 'Having a large fan on the front can cause quite a bit of static, which may not have had time to dissipate.'

So does flying though thunder clouds, or brushing your hair.
Forum: Private Flying
17th Nov 2023, 09:10
Replies: 34
Views: 2,889
Posted By scifi

The droop is caused by the weight of each aileron...

The droop is caused by the weight of each aileron acting downwards when the aircraft is stationary. In flight the aileron is subjected to an upward force caused by the airflow. Let's say this...
Forum: Private Flying
16th Nov 2023, 16:44
Replies: 34
Views: 2,889
Posted By scifi

Got the Droops

Hi Stevef, thanks for your reassuring message re the Droops to be expected on most small aircraft. I was going to pen a rather long tome, along the lines that all engineering materials are not...
Forum: Private Flying
9th Nov 2023, 19:36
Replies: 34
Views: 2,889
Posted By scifi

You say that the movement is a certain percentage...

You say that the movement is a certain percentage too much. So you must have measured the degrees of actuation, and then done a calculation.
I would think the the push rods and bell cranks are just...
Forum: Private Flying
28th Oct 2023, 09:35
Replies: 30
Views: 3,065
Posted By scifi

Hi, I fly mostly over Wales, and as I type this,...

Hi, I fly mostly over Wales, and as I type this, there is just one Eurofox at 3500ft over Clocaenog Forest, in the whole of Wales.
We already have coloured lights on each wing-tip, HISLs as well,...
Forum: Accidents and Close Calls
27th Oct 2023, 22:16
Replies: 35
Views: 14,723
Posted By scifi

I wonder how they got it back down, maybe... ...

I wonder how they got it back down, maybe... ''Could the Lady Opera Singer please walk slowly to the front of the aircraft.''
.
Forum: Accidents and Close Calls
7th Oct 2023, 13:13
Replies: 143
Views: 76,189
Posted By scifi

Just give the Co-Ordinates to the Ukrainians,...

Just give the Co-Ordinates to the Ukrainians, they will come up with a solution.
Forum: Private Flying
21st Sep 2023, 12:56
Replies: 8
Views: 1,300
Posted By scifi

Well 'On Fire' is one good example. Another...

Well 'On Fire' is one good example. Another reason would be that you don't want to spend half an hour descending from FL180 at 600 ft/min.

To reduce your energy by flying in a high drag...
Forum: Private Flying
20th Sep 2023, 13:37
Replies: 8
Views: 1,300
Posted By scifi

Rapid Descent

I have just watched a video of a dead-stick landing into Teterboro by a C152. The Pilot managed it quite easily by circling the airfield to reduce altitude, and was able to use any runway because of...
Showing results 1 to 35 of 480
 
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