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Cracks In Window Of JAL 777  
User currently offlineLevent From France, joined Sep 2004, 1718 posts, RR: 5
Posted (9 years 10 months 1 week 1 day 19 hours ago) and read 3953 times:

Yesterday 27 October a Japan Airlines Boeing 777 returned to Tokyo Narita after cracks appeared in one of the cockpit windows Flight 723 had 197 passengers on board and was flying to Kuala Lumpur. The cracks appeared during cruise at an altitude of 11 km in a window on the captain´s side and measured 40 to 50 cms. The plane landed safely in Tokyo and the pax were taken to Kuala Lumpur with another plane.

Here is the link to the news source, it´s in Dutch:
http://www.luchtvaartnieuws.nl/news/?id=6075

20 replies: All unread, jump to last
 
User currently offline777ER From New Zealand, joined Dec 2003, 12114 posts, RR: 18
Reply 1, posted (9 years 10 months 1 week 1 day 19 hours ago) and read 3931 times:
AIRLINERS.NET CREW
FORUM MODERATOR

The cracks appeared during cruise at an altitude of 11 km in a window Confused

User currently offlineLevent From France, joined Sep 2004, 1718 posts, RR: 5
Reply 2, posted (9 years 10 months 1 week 1 day 18 hours ago) and read 3914 times:

What´s wrong with that? The plane was crusing at an altitude of 11 km (about 36,000 feet) and the cracks appeared in a window on the captain´s side. Sorry if the words aren´t in the correct order, but English is not my native language...

User currently offlineStudentFlyer From Australia, joined Sep 2004, 688 posts, RR: 3
Reply 3, posted (9 years 10 months 1 week 1 day 18 hours ago) and read 3899 times:

It happened to a QANTAS 763ER a few days ago (Sunday, Oct 24). The flight was operating from PER to CGK, and aircraft returned to PER. It wasn't in the news, but a relative of mine was in that flight.

As someone else mentioned in another thread, cracked windshield isn't an event, as far as emergency procedures are concerned.

Regards,
AK


User currently offlineLyzzard From Singapore, joined Nov 2003, 404 posts, RR: 14
Reply 4, posted (9 years 10 months 1 week 1 day 18 hours ago) and read 3845 times:

Most modern aircraft windshields have up to 3 layers of glass, so there's lots of redundancy. Check this one out...



User currently offlineKDTWFlyer From United States of America, joined Jun 2004, 828 posts, RR: 1
Reply 5, posted (9 years 10 months 1 week 1 day 6 hours ago) and read 3464 times:

Lyzzard that is an amazing picture! Wow! I read in my Concorde Story book that in August, 1994, three outter window panes of the Concorde cracked at Mach 2 and 57,000ft. with no loss of pressurisation and the inner ply was taking it all! Must have been quite a sight initially to see the windows start to crack over 10 miles up.


NW B744 B742 B753 B752 A333 A332 A320 A319 DC10 DC9 ARJ CRJ S340
User currently offlineQantas077 From Australia, joined Jan 2004, 5855 posts, RR: 40
Reply 6, posted (9 years 10 months 1 week 1 day 4 hours ago) and read 3342 times:

the QF 763's window was destroyed from what i heard, question going around is what the hell happend to it, apparently it was pretty bad.


a true friend is someone who sees the pain in your eyes, while everyone else believes the smile on your face.
User currently offlineGreasespot From Canada, joined Apr 2004, 3079 posts, RR: 20
Reply 7, posted (9 years 10 months 1 week 1 day ago) and read 3164 times:

A cracked window is almost always a result of a I a shorted out window heat. I happens all the time.....NO Big deal. The inner panels of a window are the structural part.

YOu can dispatch an airplane with a cracked window on a MEL as long as it is just he outer and it does not obstruct a pilots view. ( meaning depends on how bad a pilot wants to get home)

It does not indicate a problem with a airplane or lack of maintenance. It just means that a wire shorted out in most cases.
GS



Sometimes all you can do is look them in the eye and ask " how much did your mom drink when she was pregnant with you?"
User currently offlineCessna172RG From United States of America, joined Aug 2000, 749 posts, RR: 0
Reply 8, posted (9 years 9 months 4 weeks 1 day 12 hours ago) and read 2937 times:

Is there any more information on this Qantas window blowing out the other day? Sorry to get off topic, but we are talking about window cracks and what not...


Save the whales...for dinner!!!
User currently offline767-332ER From United States of America, joined Mar 2001, 2030 posts, RR: 10
Reply 9, posted (9 years 9 months 4 weeks 1 day 12 hours ago) and read 2893 times:


Greaspot, yes, you are correct, but also, it has to be fixed at the nearest station.



Twinjets...if one fails, work the other one twice as hard!!!
User currently offline9V-SVC From Singapore, joined Oct 2001, 1797 posts, RR: 10
Reply 10, posted (9 years 9 months 4 weeks 1 day 11 hours ago) and read 2826 times:

Any idea what's the registration of the JAL's 777 ?


Airliners is the wings of my life.
User currently offlineAndrewtang From United Kingdom, joined Jun 2001, 461 posts, RR: 10
Reply 11, posted (9 years 9 months 4 weeks 1 day 10 hours ago) and read 2789 times:

Not sure which one cracked, but JA731J (773ER) replaced her. I for once won't mind if I am the passenger  Smile/happy/getting dizzy

User currently offline4Left From United States of America, joined Mar 2004, 81 posts, RR: 1
Reply 12, posted (9 years 9 months 4 weeks 1 day 5 hours ago) and read 2572 times:

"YOu can dispatch an airplane with a cracked window on a MEL as long as it is just he outer and it does not obstruct a pilots view. ( meaning depends on how bad a pilot wants to get home)"

What's a MEL???



Planes aren't busses, put service back into the air!
User currently offlineAndersNilsson From Sweden, joined May 2004, 416 posts, RR: 16
Reply 13, posted (9 years 9 months 4 weeks 1 day 4 hours ago) and read 2549 times:

What is a MEL?

A Minimum Equipment List (MEL) is a list of items that may be unserviceable on a type of aircraft under certain stated conditions such as when other identified components are operating normally and weather conditions permit. It is developed from a Master Minimum Equipment List (MMEL) which is published by a regulatory authority in consultation with the aircraft manufacturer and industry.

The MEL improves aircraft utilization without compromising safe operations and thereby provides a more convenient and economic air transportation system for the public. The MMEL includes those items of equipment related to airworthiness and operating regulations and other items of equipment that the authority finds may be inoperative and yet maintain the required level of safety by appropriate conditions and limitations. A predetermination is established, at the time the MMEL is produced, of the level of safety existing with each item unserviceable based on redundancy and probability of failure.

Anders



Airliner photography is not a crime.
User currently offlineCpt Underpants From Canada, joined May 2001, 166 posts, RR: 0
Reply 14, posted (9 years 9 months 4 weeks 1 day 4 hours ago) and read 2477 times:

Anders:

That's an excellent description of the MEL, maybe the best I've ever seen. I have to wonder if it is from the preamble in your company's document?? In any case, I hope you don't mind if I use it! I'm building a training program and I need a nice description.

A cracked, shattered or delaminated cockpit window is a pretty regular ocurrence, but there are many causes, which can include a failure in the anti-icing grid, a crack in a pane, a bird strike, or a delamination caused by a separation of the window layers.

I once heard that the windshield on the B757 is the toughest ever made, because when it was tested, the testers fired frozen turkeys at it, and had to beef it up some more to pass. In reality, the frozen part was unnecessary, as it's rare to run into a frozen bird at 15,000 ft! I don't know if this is true, but it makes a good story!


User currently offlineKLM747 From Netherlands, joined Jan 2001, 669 posts, RR: 14
Reply 15, posted (9 years 9 months 4 weeks 1 day 3 hours ago) and read 2453 times:

I believe this is a photo of the cracked window.

http://headlines.yahoo.co.jp/hl?a=20041027-02123901-jijp-soci.view-001

Will


User currently offlineWhalepilot From United States of America, joined Jun 2001, 91 posts, RR: 0
Reply 16, posted (9 years 9 months 4 weeks 1 day 3 hours ago) and read 2451 times:

Those guys are lucky that the wind didn't blow that windshield in on the crew!!!

User currently offlineJumboJim747 From Australia, joined Oct 2004, 2464 posts, RR: 44
Reply 17, posted (9 years 9 months 4 weeks 1 day 2 hours ago) and read 2374 times:

I don't think its a good idea to dispatch an aircraft with any cracks to the windscreen or any other part of the aircraft.




On a wing and a prayer
User currently offlineTACAA320 From , joined Dec 1969, posts, RR:
Reply 18, posted (9 years 9 months 4 weeks 1 day 2 hours ago) and read 2365 times:

I saw a picture of an A321 cracked window from AZ at A.net not long ago.

User currently offlineGreasespot From Canada, joined Apr 2004, 3079 posts, RR: 20
Reply 19, posted (9 years 9 months 4 weeks 1 day 2 hours ago) and read 2345 times:

Again...a Window with the outer layer cracked has not lost any structural integrity.

It is just there for Impact resistance and the heat(so you can see if it frosts up)

I have dispatched aircraft with cracked windows and will do it again. The maintenance manual says it is fine.

Sitting in the back of the airplane you would never know if the window is cracked.


GS




Sometimes all you can do is look them in the eye and ask " how much did your mom drink when she was pregnant with you?"
User currently offlineAndersNilsson From Sweden, joined May 2004, 416 posts, RR: 16
Reply 20, posted (9 years 9 months 4 weeks 1 day 1 hour ago) and read 2307 times:

Cpt Underpants, I forgot to write that the description of MEL was a citation
from Transport Canada, Civil Aviation.
http://www.tc.gc.ca/CivilAviation/commerce/certification/gmel/mel.htm

Best regards

Anders Nilsson



Airliner photography is not a crime.
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