Text 9347, 99 rader
Skriven 2013-07-22 18:01:33 av Roy Witt (1:387/22)
   Kommentar till text 9345 av Torbjorn Mohn (2:211/37)
Ärende: De Nar
==============
Torbjorn Mohn wrote to Roy Witt:

 >>> Well, the plane went down short of the runway, damaging the plane
 >>> beyond repair (The plane was written off), that qualifies for the
 >>> term CRASH in my book.
 >> Actually not. The plane rolled onward 300+m and caught fire...there
 >> was minimal damage upon landing.

 TM> The damage was large enough to cause the plane to be written off. I
 TM> bet you, it made a lot of noise also when it crashed.

No more noise than any other airliner landing. As the report indicates:

"During the impact and short ground roll the nose landing gear (NLG) and
both the main landing gears (MLG) collapsed. The right MLG separated from
the aircraft but the left MLG remained attached. The aircraft came to rest
on the paved surface in the undershoot area of Runway 27L.

The commander attempted to initiate an evacuation by making an evacuation
call, which he believed was on the cabin Passenger Announcement (PA)
system but which he inadvertently transmitted on the Heathrow Tower
frequency. During this period the co-pilot started the actions from his
evacuation checklist. Heathrow Tower advised the commander that his call
had been on the tower frequency so the commander repeated the evacuation
call over the aircraft's PA system before completing his evacuation
checklist.

The flight crew then left the flight deck and exited the aircraft via the
escape slides at Doors 1L and 1R. The cabin crew supervised the emergency
evacuation of the cabin and all occupants left the aircraft via the
slides, all of which operated correctly.

One passenger was seriously injured, having suffered a broken leg, as a
result of detached items from the right MLG penetrating the fuselage.

Heathrow Tower initiated their accident plan, with a crash message sent at
1242:22 hrs and fire crews were on scene 1 minute and 43 seconds later.
The evacuation was completed shortly after the arrival of the fire
vehicles.

After the aircraft came to rest there was a significant fuel leak from the
engines and an oxygen leak from the disrupted passenger oxygen bottles,
but there was no fire. Fuel continued to leak from the engine fuel pipes
until the spar valves were manually closed.

Subnote: 7

Damage to aircraft: The aircraft was damaged beyond economic repair."

Meaning that it would have been uneconomical to make repairs that would
make it airworthy again.

 >>> If there is a scientific explanation for when an incident qualifies
 >>> for the crash term, please lead me to it.

 >> You can use your own dictionary to look up the terms. Note that an
 >> incident is something that occurs due to something more definite, i.e.
 >> usually a minor 'event' or condition that is subordiante to another.

 TM> I did. Here is what dictionary.com says:

 TM> crash  [krash]  verb (used without object) 1. to make a loud,
 TM> clattering noise, as of something dashed to pieces. 2. to break or
 TM> fall to pieces with noise. 3. (of moving vehicles, objects, etc.) to
 TM> collide, especially violently and noisily. 4.to move or go with a
 TM> crash; strike with a crash. 5. Aeronautics . to land in an abnormal
 TM> manner, usually causing severe
 TM> damage: The airliner crashed.

 TM> Me thinks the last one qualifies in this instance. The plane was
 TM> severely damaged, never to fly again. One passenger was seriously
 TM> injuried. It's a crash in my book,

Glad I'm not reading your book, as the 'incident' report reads much
easier without any assumptions made on your part.

PS - there had been a lot of rain prior to this incident which made the
ground much softer than it normally is.

"The initial impact of the aircraft was approximately 110 m inside the
airfield's perimeter fence. The first grounds marks (Figure 22) were made
by the rearmost wheels, followed by all the main wheels as the trucks
tilted forward, at which time the maximum vertical acceleration spike of
2.9g was recorded on the DFDR. The touchdown into soft soil produced
impact gouges with a depth of up to 0.45 m from the right gear and 0.36 m
from the left gear. There was also a mark from the contact with the rear
fuselage as the aircraft continued forward."

Had it been a 'crash', those impact gouges would have been much deeper, in
fact probably 3 to 5 times deeper than they actually were. See crash
report of Flight 97 into a field in western Pennsylvania for comparison.


         R\%/itt


--- GoldED+/W32 1.1.5-31012
--- D'Bridge 3.92
 * Origin: Lone Star BBS San Antonio, Texas - USA - (1:387/22)