Saudi incident at ISB - big deal?

CoyBoy · Post by **CoyBoy** » Tue Aug 16, 2005 6:24 pm

Close call for Saudi Airways flight

By Our Staff Reporter

RAWALPINDI, Aug 15: A Saudi Airways Boeing 747 with 353 passengers on board narrowly escaped a disaster when six of its tyres "deflated" while landing at Islamabad airport on Saturday, sources said.

A senior official of Saudi Airways, when contacted, said six tyres of the flight SV-3722 deflated when brakes were applied.

"Usually, deflating of tyres happens due to overheating of wheel drums. However, the landing was smooth and nobody was hurt," the official said.

He added that spare tyres were brought from Saudi Arabia through another flight on Sunday. The aircraft took off for its destination after tyres were replaced.

Source: DAWN

AP-BGL · Post by **AP-BGL** » Wed Aug 17, 2005 6:36 pm

This flight also had 200 deported poeple from Saudi Arabia.

basit_s · Post by **basit_s** » Thu Aug 18, 2005 1:05 am

Pakistani airspace and airports are becomming dangerous with time.

AP-BGL · Post by **AP-BGL** » Thu Aug 18, 2005 1:11 am

basit_s wrote:Pakistani airspace and airports are becomming dangerous with time.

Do you think the tyres which get deflated were due to Pakistani airport?

Abbas Ali · Post by **Abbas Ali** » Thu Aug 18, 2005 1:16 am

According to Lahore edition of newspaper 'The News', the pilot of Saudi aircraft applied emergency brakes to stop the plane. The heat generated by emergency brakes caused 6 tyres to burst.

basit_s · Post by **basit_s** » Thu Aug 18, 2005 1:23 am

AP-BGL wrote:
basit_s wrote:Pakistani airspace and airports are becomming dangerous with time.
Do you think the tyres which get deflated were due to Pakistani airport?

What I meant was that incidents in Pakistani airspace have become very frequent. For example, near miss collisions (2 - 3 near miss during the last two months), now tires bursting, whats next ?

AP-BGL · Post by **AP-BGL** » Thu Aug 18, 2005 1:34 am

Miss Collisions are the things involved in airspace (and your are right in this regard) but one cannot blame a Pakistani airport for tyres getting brust.
P.S. Abbas Bhai do you know the reason why did pilot of Saudi a/c apply emergency brakes?

PK · Post by PK » Thu Aug 18, 2005 6:48 am

Near misshaps happens all over the world and most of these occur everyday in US.

It's immature to blame Pakistani airports when SV aircraft tyres bursted.

Is that Pakistan's aviation fault when tyres bursted?

Pakistan aviation is one of the most safest in world.

Go and reserch about US and India?

Moin · Post by **Moin** » Thu Aug 18, 2005 8:37 pm

Actually ISB airport runway is not very long. And upon touchdown, the thrust reversers and brakes have to be applied immediately, and if you note when the a/c makes a U turn to head towards the parking ramp area, you can actually see the end of the runway.

Adnan Anwar · Post by **Adnan Anwar** » Thu Aug 18, 2005 8:42 pm

Moin wrote:Actually ISB airport runway is not very long. And upon touchdown, the thrust reversers and brakes have to be applied immediately, and if you note when the a/c makes a U turn to head towards the parking ramp area, you can actually see the end of the runway.

Isn't the length of this runway 30L about 9000 ft.

I could be wrong but I thought I read it somewhere.

R.F. · Post by **R.F.** » Thu Aug 18, 2005 9:26 pm

All aircraft tyres have fuseible plugs that deflate them beyond a certain heat generation threshold in order to pre-empt bursting of the tyres. That is an inbuilt manufacturing feature.
Stopping distance of any jet is calculated based on brakes and spoilers only, Reverse Thrust credit is not taken into account on dry airfields.

ISB has adequate runway length. The only factor to be considered is when its raining there since that tends to create aquaplanning or hydroplanning due large rubber deposits in the touch down area making it very slippery whilst landing.

Rest its a fairly regular airfield.

stylo4444 · Post by **stylo4444** » Fri Aug 19, 2005 10:03 am

Adnan Anwar wrote:
Moin wrote:Actually ISB airport runway is not very long. And upon touchdown, the thrust reversers and brakes have to be applied immediately, and if you note when the a/c makes a U turn to head towards the parking ramp area, you can actually see the end of the runway.
Isn't the length of this runway 30L about 9000 ft.

I could be wrong but I thought I read it somewhere.

ISB airport runway isn't short...9000 ft??

Runway 30 is 10,800 feet...London Gatwick is even shorter.

R.F. · Post by **R.F.** » Fri Aug 19, 2005 12:06 pm

You're right ISB runway length is adequate, however a number of other factors are to be considered such as the elevation, runway surface, and climatic conditions.

For example on a hot day, high elevation, and a wet surface condition would present a bit of skill test to put an let's say 170 tons of metals doing aound 150 mph, the inertia involved is tremendous. However like i stated earlier ISB is a fairly regular airfield.

Moin · Post by **Moin** » Fri Aug 19, 2005 2:08 pm

The length of ISB airport runway may be 'adequate' but would it be long enough to cater to an aborted takeoff or a landing, the likes of which just occured?

R.F. · Post by **R.F.** » Fri Aug 19, 2005 4:11 pm

Yes ! by adequate it means has enough concrete to cater for all eventualities.