Another Airlink aircraft down

[Mila]

"The plane overshot the runway because the brakes apparently failed," Sapa quoted him as saying.

Well if it was aquaplaning, then the brakes wouldn't work.

But there were no water to aquaplane on

 

[Sackboy]

Well ive never seen any types of drainage systems on a runway, nothing on either side to allow for the flow of water. But what I have noticed is that no runway is entirely flat, maybe they are designed to allow water to runoff rather than sit in pools.. ive never seen pools of water on a runway, even when it rains hard.

There isn't much camber, like on a road. Aircraft tyres are designed with grooves parallel to the runway to deter water.

 

[Sackboy]

But there were no water to aquaplane on

There was, but the birds ate it.

Light rain was on the weather forecast.

 

[Surv0]

There isn't much camber, like on a road. Aircraft tyres are designed with grooves parallel to the runway to deter water.

that makes sense, actually thinking about it, ive noticed these grooves in the runway...

 

[Pitbull]

jip. It is suppose to have. I see no water to speak of, in puddles on any of the pictures... so I think they are making up and excuse

Well ive never seen any types of drainage systems on a runway, nothing on either side to allow for the flow of water. But what I have noticed is that no runway is entirely flat, maybe they are designed to allow water to runoff rather than sit in pools.. ive never seen pools of water on a runway, even when it rains hard.

The reason I'm asking is this:

Let's assume it's built like our roads where the water runs off to the side all is good and well. However if the airport does not maintain the surface you will get flat spots that could have a build up of water. If this is the case I would assume the Company who's aircraft it is/was could then recover the funds from the airport for not maintaining the runway?

This is causing a massive black mark against Airlink's name and I would assume a company should be able to take corrective measures against said airports if this is the case.

We don't know for sure about the aquaplaining as it's currently just speculation but it should have grounds or else no one would have mentioned it.

 

[Pitbull]

There isn't much camber, like on a road. Aircraft tyres are designed with grooves parallel to the runway to deter water.

But so too is car tires. The problem is when you hit a puddle of water with force no matter what groves and how deep or many they are doesn't help much.

 

[Mila]

There was, but the birds ate it.

Light rain was on the weather forecast.

 

[MidnightWizard]

ABS

But so too is car tires. The problem is when you hit a puddle of water with force no matter what groves and how deep or many they are doesn't help much.

Aircraft have differential braking / steering , They should also have ABS , they also have a rudder, they can also apply asymetric power to the engines.

ALL things that you cannot do in a motor vehicle.

You do not normally aquaplane in a straight line ( looks from the photos that the aircraft went straight off the end of the runway.]

IF you do it indicates that that brakes are not having any effect. ( you have lost traction )

The suggestion of landing long and hot makes sense to me ( Pilot error )

( BUT -- what do I know -- WILL it all come out in the wash ???? )


MW

 

[saffakanera]

http://twitpic.com/sipp8

Nice parking.

 

[Ou grote]

Maybe somebody left a banana peel on the rwy. It happens...

 

[supersunbird]

SA Roadlink... SA Airlink... mmmmm...

Its the curse of the SA *links I tells ya!

 

[nugpot]

Originally Posted by KhoisanX
It seems reversers are optional on the 135, if this one has them fitted then aren't deployed

agreed

Airlink did not exercise the thrust reverser option. ZS-SJX does not have thrust reversers fitted.

 

[nugpot]

Aircraft have differential braking / steering , They should also have ABS , they also have a rudder, they can also apply asymetric power to the engines.

ALL things that you cannot do in a motor vehicle.

Differential braking would mean you have to release one brake slightly. That takes away from total braking performance and should be avoided.

A/c ABS is called anti-skid and is very effective in providing the best possible braking performance under any particular conditions.

Airlink 135's are not fitted with thrust reversers, so to get differential thrust, you would have to increase thrust on one engine. Not very bright when you are trying to slow down.

The rudder is only effective at higher speeds. At lower speeds the a/c is steered by nosewheel steering.

The problem with a/c are that the speeds are significantly higher than car speeds. Typical touch-down speed for a 135 would be around 135kts (about 250km/h). Things can go wrong very quickly when you are travelling at 70m/sec.

 

[Alan]

Maybe somebody left a banana peel on the rwy. It happens...

My confidence in your piloting expertise is reaffirmed

 

[kilos]

Differential braking would mean you have to release one brake slightly. That takes away from total braking performance and should be avoided.

A/c ABS is called anti-skid and is very effective in providing the best possible braking performance under any particular conditions.

Airlink 135's are not fitted with thrust reversers, so to get differential thrust, you would have to increase thrust on one engine. Not very bright when you are trying to slow down.

The rudder is only effective at higher speeds. At lower speeds the a/c is steered by nosewheel steering.

The problem with a/c are that the speeds are significantly higher than car speeds. Typical touch-down speed for a 135 would be around 135kts (about 250km/h). Things can go wrong very quickly when you are travelling at 70m/sec.

Thanks Nugpot (an Avcommer) for providing MyBB forumites with some actual facts as you indeed qualified as a pilot yourself

 

[Ou grote]

My confidence in your piloting expertise is reaffirmed

Don't need much of a runway to safely land a little cessna, so I ain't had this issue before.

 

[Patty]

Maybe somebody left a banana peel on the rwy. It happens...

Haha !!!! I dare you to post that on avcom.
Be prepared to be flamed to death.

 

[Hosehead]

Thanks Nugpot (an Avcommer) for providing MyBB forumites with some actual facts as you indeed qualified as a pilot yourself

Nuggie is a Fly-Africa Moderator and he's a Regional Airline Pilot.
Nice to see you sort out the idiocy nugs.

 

[Alan]

Don't need much of a runway to safely land a little cessna, so I ain't had this issue before.

But have you ever hit a banana peel?

 

[Ou grote]

But have you ever hit a banana peel?

Nope.

Was just throwing out some wild ideas like some other posters.

Was thinking they should have a net at the end of the runway at George, like on aircraft carriers.
I thought that all major airports had those.