Sriwijaya Air Overshoots Runway

[Vanhelsing]

No one was hurt after the Boeing aircraft operated by domestic carrier Sriwijaya Air overshot the wet runway at the airport in Manokwari city, said transport ministry spokesman J. Adravida Barata.

It is just the latest of many accidents for Indonesia's air transport sector.

In February, a Sriwijaya plane carrying 192 people from China to Bali was forced to turn back after the crew realised one of its doors was not properly closed.

In the same month, a passenger plane operated by Indonesian flag carrier Garuda skidded off the runway as it landed at the airport serving the city of Yogyakarta in heavy rain.

https://au.news.yahoo.com/world/a/3...overshoots-runway-in-eastern-indonesia/#page1

 

[Anglian]

I would blame the runway more than the airline, Indonesia gets a lot of rain, unfortunately the water doesn't drain off the runways quick enough, most foreign runways are ridged, small ridges machined into the surface of the runway, this helps to prevent Aquaplaning, one of the funniest write ups I had was from two Saudi pilots who went off the runway, he wrote the brakes did not operate so I ordered the co pilot to apply brakes, he did so, and together we applied the brakes, but we still went off the end of the run way.
It can be worse if there is a cross wind while the aircraft is aquaplaning, the wind gently blows the aircraft off the runway,
If the pilot keeps the aircraft brakes on the heat from the tyres and water contact create super heated steam melting the tyres so you can also get tyre bursts, so basically most runways aren't to good, bit like their bumpy toll roads

 

[Davita]

There can be a number of reasons why an aircraft overruns the landing distance of the runway.
The engine thrust reversers are the primary device used as soon as an aircraft touches down and also the spoilers on the wings to dump any lift over the wings, then the brakes are applied. As Anglian said...aquaplaning does extend the distance required as the brakes anti-skid devices try to overcome the skid and they release the brakes intermittently.
All runways are calculated for the distance required even when it is wet. ATC need to tell the pilot what the runway condition is and it's up to him to decide if within the parameters required for his landing. He takes into consideration the A/C weight, the headwind component, the touch down point, the threshold crossing speed(Vref).
If satisfied he will continue his approach and if any of these conditions aren't satisfied at the point of touch-down and he 'say' lands too fast...or too far down the runway.. he has the option of 'going around' by applying full power and taking-off again.
If he isn't satisfied with the runway condition he can hold until the conditions are better or divert to an alternate airport.
That's the normal procedure.

 

[dafluff]

he has the option of 'going around' by applying full power and taking-off again.
If he isn't satisfied with the runway condition he can hold until the conditions are better or divert to an alternate airport.
That's the normal procedure.

Say what? And let the nasi goreng waiting on the ground get cold?

 

[centurion]

I`ve heard from people from airline industry that planes are sometimes overloaded and those courier companies bribe sometimes (pilots?staff?) to get more cargo inside the plane and sometimes planes overshot runways because of that.
Can this be true?

 

[Davita]

I`ve heard from people from airline industry that planes are sometimes overloaded and those courier companies bribe sometimes (pilots?staff?) to get more cargo inside the plane and sometimes planes overshot runways because of that.
Can this be true?

That's possible, especially in third world countries where the weight manifest may not be very accurate, but I doubt a small increase in A/C weight would have too much effect. If significant weight was added that would be more serious at take-off rather than an impediment to a landing.

 

[Vanhelsing]

I`ve heard from people from airline industry that planes are sometimes overloaded and those courier companies bribe sometimes (pilots?staff?) to get more cargo inside the plane and sometimes planes overshot runways because of that.
Can this be true?

If I recall correctly, a person could bribe the Indonesian Air Force to carry passengers on military planes, so to get extra cargo on a private courier flight wouldn't be that difficult, I imagine.

 

[dafluff]

There are some technical reasons as to why on overshoot happens. Absence of grooved runways is one of them. But by far and large the problem in Indonesia is culture. Both company culture and local culture. Going around is considered shameful, so they are very adverse in doing one, and much rather take their chances with the ground. Younger pilots may also be very reluctant to order a go-around in the presence of a senior pilot. So this results in many continued landings at too high a speed for the conditions.

The Garuda 737 that crashed in Jogja and killed 20 people happened because the Captain elected to continue despite being too fast by almost 200 km/h for landing, the co-pilot was too afraid to say anything, and Garuda had just implemented a salary bonus scheme for fuel saving (brilliant idea...).

The Lion 737 turned into seaplane a few years back in Bali was because the Captain elected to continue despite not seeing the airport way past decision height. This is not rocket science. When you reach DH and you don't see the runway, you go around. You don't think about it, you don't wait 3 more seconds, you. go. around. You learn this within the first 50 hours of pilot school.

 

[macvert]

Don't planes have ABS ..... & if not, don;t they know (or maybe they're not skilled enough) to just keep pumping the pedal ? .....

Garuda had just introduced a salary bonus scheme (brilliant idea...).

I wonder what are the other ways of saving fuel? .... not being a lead foot comes to mind, maybe our resident airmen can help here

 

[Davita]

Don't planes have ABS ..... & if not, don;t they know (or maybe they're not skilled enough) to just keep pumping the pedal ? ..... I wonder what are the other ways of saving fuel? .... not being a lead foot comes to mind, maybe our resident airmen can help here

All modern aircraft have anti-skid brakes...usually referred in aviation parlance as maxarets. They are selectable, as is auto-braking which is recommended in wet runway conditions.

The principle behind saving fuel is to be as efficient as possible. i.e. Fuel uplift for the condition and don't carry too much excess; do not start engines too early; taxy without using too much thrust; use de-rated thrust for take-off; plan an efficient climb and select a cruise altitude to best save fuel; cruise at the best speed for efficiency; plan the point of descent to minimize fuel use; when taxy-in shut engines when suitable (4 engines A/C). There are other principles.