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Airbus A320 4 Weel Main Landing Gear?  
User currently offlineQantas744ER From United States of America, joined Jun 2005, 1286 posts, RR: 4
Posted (8 years 11 months 2 weeks 2 days 3 hours ago) and read 14458 times:

hey, why does this A320

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have 4 instead of 2 weels on the main landing gear?
is it because of higher MTOW, i know for sure that this is the only one in the world like this.

Cheers Leo


Happiness is V1 in Lagos
37 replies: All unread, showing first 25:
 
User currently offlineScbriml From United Kingdom, joined Jul 2003, 12568 posts, RR: 46
Reply 1, posted (8 years 11 months 2 weeks 2 days 3 hours ago) and read 14463 times:
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This question pops up fairly regularly here. IC is unique in having ordered A320s with 4-wheel landing gear. It was done to handle landing on rough fields in India.

I don't think all their A320s have it, and I understand they are not going to buy any more like that. I think the standard 2-wheel gear has proven to be good enough to cope.



Time flies like an arrow, but fruit flies like a banana!
User currently offlineLeanOfPeak From United States of America, joined Oct 2004, 509 posts, RR: 1
Reply 2, posted (8 years 11 months 2 weeks 2 days 3 hours ago) and read 14458 times:

A thread discussing this is at Indian Airlines A320's Main Gear Have 4 Tires (by United777 Apr 25 2003 in Tech Ops) , with multiple other threads linked from there.

Basically, it lowers the pavement loading for use on runways that would otherwise not stand up to repeated A320 landings.


User currently offlineNZ1 From New Zealand, joined May 2004, 2266 posts, RR: 25
Reply 3, posted (8 years 11 months 2 weeks 1 day 21 hours ago) and read 14388 times:
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Thats interesting. I never knew there had been a handful made with that landing gear config. Thanks for the link to the other thread.

NZ1


User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 4, posted (8 years 11 months 2 weeks 1 day 17 hours ago) and read 14350 times:

The Vendor has closed shop & the Aircraft which followed have the Conventional type Two wheel gear.
When I watch the two types at Work.The Bogie def looks better  Smile
regds
MEL



Think of the brighter side!
User currently offlineMandala499 From Indonesia, joined Aug 2001, 6866 posts, RR: 75
Reply 5, posted (8 years 11 months 2 weeks 1 day 15 hours ago) and read 14357 times:

And had the bogie version is better marketed, Airbus would have made a few more sales in some parts of the world (where PCN is a HUGE problem)...

Mandala499



When losing situational awareness, pray Cumulus Granitus isn't nearby !
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 6, posted (7 years 1 month 3 weeks 14 hours ago) and read 13539 times:

Surprisingly only IC thought of it.Only few remain.The new Aircraft all have the Conventional type.
regds
MEL



Think of the brighter side!
User currently offlineBuyantUkhaa From Mongolia, joined May 2004, 2899 posts, RR: 3
Reply 7, posted (7 years 1 month 3 weeks 14 hours ago) and read 13537 times:

I'm surprised that the only version ever fitted with this option was the A320 rather than the heavier A321. What's the wheel load of an A321 compared to a 777?

And were large modifications needed to the wheel bay?



I scratch my head, therefore I am.
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17041 posts, RR: 66
Reply 8, posted (7 years 1 month 3 weeks 13 hours ago) and read 13529 times:

Quoting BuyantUkhaa (Reply 7):
I'm surprised that the only version ever fitted with this option was the A320 rather than the heavier A321. What's the wheel load of an A321 compared to a 777?

Higher of course, but nowhere near the 727-200 for example, which interestingly has operated from dirt strips. It's a niche market. I don't know how many more 321s they would have sold. If you think about it, the backlog is filled anyway.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineAirPacific747 From Denmark, joined May 2008, 2408 posts, RR: 24
Reply 9, posted (7 years 1 month 3 weeks 13 hours ago) and read 13522 times:

Just like the AF 320s without winglets.. couldn't believe my eyes the first time I saw them.

User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 79
Reply 10, posted (7 years 1 month 3 weeks 13 hours ago) and read 13521 times:

Quoting BuyantUkhaa (Reply 7):
I'm surprised that the only version ever fitted with this option was the A320 rather than the heavier A321. What's the wheel load of an A321 compared to a 777?

A321 is roughly 20 tons per wheel. 777 is about 29 tons per wheel (for a 300ER) but it's a much bigger wheel. Actual pressure over the contact area is probably higher for the A321.

Indian Airlines only recently started getting A321's and I believe they've addressed the runway strength problems where they fly. The A320's have been around for a long time.

Tom.


User currently offlineStarlionblue From Greenland, joined Feb 2004, 17041 posts, RR: 66
Reply 11, posted (7 years 1 month 3 weeks 13 hours ago) and read 13519 times:

Quoting AirPacific747 (Reply 9):
Just like the AF 320s without winglets.. couldn't believe my eyes the first time I saw them.

Hehe. Well that was the original design.  Wink



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 12, posted (7 years 1 month 3 weeks 12 hours ago) and read 13506 times:

Quoting BuyantUkhaa (Reply 7):
I'm surprised that the only version ever fitted with this option was the A320 rather than the heavier A321

When IC Ordered the Aircraft there were no A321s.

Quoting AirPacific747 (Reply 9):
Just like the AF 320s without winglets

Are you talking about the -100 series.

regds
MEL



Think of the brighter side!
User currently offlineAirPacific747 From Denmark, joined May 2008, 2408 posts, RR: 24
Reply 13, posted (7 years 1 month 3 weeks 1 hour ago) and read 13386 times:

Quoting Starlionblue (Reply 11):
Hehe. Well that was the original design.

Didn't know that  Smile

Quoting HAWK21M (Reply 12):
Are you talking about the -100 series.

Perhaps.... I don't know the differences actually...


User currently offlineAirframeAS From United States of America, joined Feb 2004, 14150 posts, RR: 24
Reply 14, posted (7 years 1 month 3 weeks ago) and read 13375 times:

Quoting HAWK21M (Reply 6):
Only few remain.

Exactly how many of these did Airbus produce in this landing gear format? That is really a surprising sight!



A Safe Flight Begins With Quality Maintenance On The Ground.
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17041 posts, RR: 66
Reply 15, posted (7 years 1 month 2 weeks 6 days 20 hours ago) and read 13324 times:

Quoting AirPacific747 (Reply 13):
Quoting Starlionblue (Reply 11):
Hehe. Well that was the original design.

Didn't know that

To clarify, the 320-100 had no gates. However very few were produced (less than 20) before the -200 came out with the gates (they're not really called winglets).



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 16, posted (7 years 1 month 2 weeks 6 days 15 hours ago) and read 13279 times:

Quoting AirframeAS (Reply 14):
Exactly how many of these did Airbus produce in this landing gear format

The entire fleet until a few years ago.

Quoting Starlionblue (Reply 15):
To clarify, the 320-100 had no gates. However very few were produced (less than 20) before the -200 came out with the gates (they're not really called winglets).

Isn't the correct term "Fence"
regds
MEL



Think of the brighter side!
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17041 posts, RR: 66
Reply 17, posted (7 years 1 month 2 weeks 6 days 12 hours ago) and read 13255 times:

Quoting HAWK21M (Reply 16):
Quoting Starlionblue (Reply 15):
To clarify, the 320-100 had no gates. However very few were produced (less than 20) before the -200 came out with the gates (they're not really called winglets).

Isn't the correct term "Fence"

You are correct. I had a brainfart. It was very late.  Wink



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineAirframeAS From United States of America, joined Feb 2004, 14150 posts, RR: 24
Reply 18, posted (7 years 1 month 2 weeks 5 days 19 hours ago) and read 13148 times:

Quoting HAWK21M (Reply 16):
The entire fleet until a few years ago.

I meant for the entire A320's family history (From the start until now) regardless of operator. I'm assuming they only built a very small few like what Boeing did with the 737-100 which was about 30.



A Safe Flight Begins With Quality Maintenance On The Ground.
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 19, posted (7 years 1 month 2 weeks 5 days 6 hours ago) and read 13094 times:

Quoting AirframeAS (Reply 18):
meant for the entire A320's family history (From the start until now) regardless of operator

Only IC ordered the 4 geared version.
regds
MEL



Think of the brighter side!
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17041 posts, RR: 66
Reply 20, posted (7 years 1 month 2 weeks 5 days 4 hours ago) and read 13079 times:

Quoting AirframeAS (Reply 18):
I'm assuming they only built a very small few like what Boeing did with the 737-100 which was about 30.

Fewer than 20 IIRC. But the aircraft remained the same internally if you will. No stretch or anything major like on the 737-200.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineCF188A From , joined Dec 1969, posts, RR:
Reply 21, posted (7 years 1 month 2 weeks 4 days 9 hours ago) and read 13025 times:

is this an option for all 320 family customers?

User currently offlineStarlionblue From Greenland, joined Feb 2004, 17041 posts, RR: 66
Reply 22, posted (7 years 1 month 2 weeks 4 days 5 hours ago) and read 12987 times:

Quoting CF188A (Reply 21):
is this an option for all 320 family customers?

Nope. It was a special order if you will. Since no one else wanted it it was discontinued, much like the folding 777 wings.

But I'm sure if you pay enough.  Wink



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineAirframeAS From United States of America, joined Feb 2004, 14150 posts, RR: 24
Reply 23, posted (7 years 1 month 2 weeks 4 days 2 hours ago) and read 12954 times:

Quoting Starlionblue (Reply 20):
Fewer than 20 IIRC. But the aircraft remained the same internally if you will. No stretch or anything major like on the 737-200.

Pardon me for sidetracking the thread, but Boeing.com states 30 731's were built and delivered. This was also pointed out in another thread not too long ago.

Quoting HAWK21M (Reply 19):
Only IC ordered the 4 geared version.

So only 4 were built in that config. Thanks, Hawk.



A Safe Flight Begins With Quality Maintenance On The Ground.
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 24, posted (7 years 1 month 2 weeks 3 days 16 hours ago) and read 12902 times:

Quoting CF188A (Reply 21):
is this an option for all 320 family customers

It was.But only IC opted for it.

Quoting AirframeAS (Reply 23):
Quoting HAWK21M (Reply 19):
Only IC ordered the 4 geared version.

So only 4 were built in that config. Thanks, Hawk

Thats Incorrect....There were more than just four.Should have been 30+.I stated the number of Wheels on each MLG.
regds
MEL



Think of the brighter side!
25 AirframeAS : Totally my bad. I misunderstood you. I apologize. I stand corrected!
26 BuyantUkhaa : Sure, but when the A321 entered the market, its higher wheel load might have made the 4-wheel bogie attractive again. Apparently not though.
27 HAWK21M : Not when the Runway surfaces & lengths were adequate. regds MEL
28 Post contains links A342 : Actually, it seems that the four-wheel gear can take LESS weight than the standard version! http://www.content.airbusworld.com/S...cds/A319-A320-A321/
29 Post contains images Starlionblue : It was unclear from the post but I was referencing the A320-100.
30 Claude : i Confirm... it was to can land on less good quality landing strips...
31 HAWK21M : How many A320-100s were built & how many still Airworthy. regds MEL
32 Post contains links TristarSteve : Read this Times Running Out For BA's A320-111's (by TUGMASTER Aug 2 2007 in Civil Aviation) All you need to know about the A320-100.
33 Starlionblue : In my book it just says the -100 option was dropped after line number 22, so I guess 22 examples? Apart from crashes I am pretty certain they are all
34 HAWK21M : Interesting. Any difference apart from the Wing fence & Software between A320-100 & -200.Mainly Exterior differences.I know about the Bulk cargo door
35 TristarSteve : Biggest difference was the -100 had much lower weights, with lower rated gears. What is amazing is that if you go in the flightdeck of an 1988 -100 a
36 Starlionblue : As TristarSteve mentions, the -200 has higher weights. That's why the operators weren't too keen on the -100 once they could buy the -200.
37 PurdueAv2003 : Out of curiosity, who manufactured the four-wheel landing gear? I am familiar with the standard gear manufactured by Messier-Dowty. If M-D manufacture
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