Jetstar off the runway in CHC

[openseat]

A little excursion off the runway this morning at CHC....

'We were just on the grass': Video emerges of moment Jetstar flight veers off Chch runway

Passengers could be heard questioning if they had just gone on the grass.

www.newshub.co.nz

 

[jrfsp]

Christ!

 

[SYD]

Christ!

….Church.

 

[Saab34]

One for the Pilots, in the video below, you can certainly hear one of the engines spooling up as they take the taxi way. Thoughts?

Is it a technique to spool up one engine for a nose wheel gear failure?

'We were just on the grass': Video emerges of moment Jetstar flight veers off Chch runway

Passengers could be heard questioning if they had just gone on the grass.

www.newshub.co.nz

 

[Mogul]

You want to pre pay for a smooth landing that'll be an extra $20.

 

[Hvr]

I imagine the pilot is feeling sheepish.

 

[SYD]

I imagine the pilot is feeling sheepish.

Too soon?

Well, unless there was one on the runway…

 

[jb747]

One for the Pilots, in the video below, you can certainly hear one of the engines spooling up as they take the taxi way. Thoughts?

Before I looked at any of the videos, or FR24, I was prepared to bet that this happened just beyond a taxiway exit. And now that I've looked, I should have taken some bets.

The aircraft are easy to control, at least to a stop on the runway, using differential braking. They make really bad cars, and understeer terribly. Own goal.

Is it a technique to spool up one engine for a nose wheel gear failure?

No.

 

[RooFlyer]

Is it a technique to spool up one engine for a nose wheel gear failure?

No.

At about 50 seconds in the first video in the original link, the pilot is heard saying " ..everything seemed normal but after landing, the engines seemed to spool up" and a pax also noted a speeding up after landing (FWTW )

Could that be an issue they'd look into?

 

[jb747]

At about 50 seconds in the first video in the original link, the pilot is heard saying " ..everything seemed normal but after landing, the engines seemed to spool up" and a pax also noted a speeding up after landing (FWTW )

I can believe a bit of ice on the runway, making it slippery, but uncommanded engine spool up…nah.

If you watch the video, you can see that there’s some moisture blow back in front of the engine, so there’s at least a couple of seconds of reverse thrust before reaching the grass.

Could that be an issue they'd look into?

Oh, I’m sure it will be looked at. As soon as the FDR data is downloaded, they’ll have their answers.

 

[Mwenenzi]

No frost or rain on Friday when this aircraft landed. Very mild morning (~I am 30 km from CHC)

The Aviation Herald

Aviation Herald - News, Incidents and Accidents in Aviation

avherald.com

An Jetstar Airbus A320-200, registration VH-VFF performing flight JQ-225 from Auckland to Christchurch (New Zealand), landed on Christchurch's runway 02 at 07:45L (19:45Z May 30th) and slowed when at low speed the aircraft began to veer to the right, temporarily went off the paved surface onto grass about 2050 meters/6700 feet down the runway before returning onto the runway's paved surface and coming to a stop at the right hand edge of the runway. There were no injuries, the aircraft received minor damage.

Passengers reported that the crew told them the aircraft had suffered a hydraulic leak at the right hand side during approach, after touchdown the right hand engine just seemed to spool up and caused them to vacate the runway, the aircraft swerved to the right and took a few runway edge lights out, they had to bring the aircraft to a stop for safety reasons, they were safe, emergency services were checking around the aircraft that everything was safe.

The airline reported a steering issue caused the runway excursion. There were no injuries, the aircraft was towed to the apron. New Zealand's TAIC is investigating.

New Zealand's TAIC opened an investigation into the occurrence.

The SIN CHC non stop SQ297 ( 07:50 - 09:30) went up to AKL for a few hours. Back about mid day

 

[tdimdad]

A viewpoint from a passenger who says they are also a pilot.

Pilots’ warning to passengers after Jetstar’s Christchurch runway scare

Pilots group providing support for colleagues involved after plane skidded from runway.

www.nzherald.co.nz

 

[Saab34]

This is the track it seemed to have taken, the left track off the intended taxiway track would line up with an increase in power in the Right engine that is audible.

So if you had a nosewheel steering fail, assuming in this case it might have been continuous tracking to the right, would one not just apply braking and just park it wherever it stops?

It seems like here, they applied the thrust on the right to perhaps keep it on the runway? I remember JB mentioning one that thrust is slow to respond (?). Which means that obviously ended up cutting across the grass.

 

[jb747]

Aircraft nose gear skids very easily, which means you'll get understeer. They're basically very bad cars. Differential braking is very effective (and I presume every pilot knows how to do it). It should easily overpower any nose gear issue. You simply wouldn't try to correct any issue with power. The lag is far to great. Even if you're trying to help the aircraft turn when taxiing, you need to lead by quite a bit, and even then only the outboard engines on a quad are much help.

But, a large application of power (i.e. take off thrust), is far beyond the ability of brakes or steering to control, which is why an engine failure right at the start of the take off roll can actually be the hardest to keep on the runway. Having said that, I cannot see any reason for a large differential power application, nor do I think the aircraft did it by itself. Unless, of course, they've invented a new failure mode, on a pretty old type. Not unheard of, I guess.

 

[Quickstatus]

This is the track it seemed to have taken

I think it's more like this rather than getting on taxiway then veer left off taxiway.
(Maybe your hand drawing was trying to depict same)

 

[Saab34]

Looks like it did some engine damage, photo circling on Facebook showing it parked on a stand with all engine blades removed.

I think it's more like this rather than getting on taxiway then veer left off taxiway.
(Maybe your hand drawing was trying to depict same)

Definitely went further down, went past the lights/sign and down to the second what appears like old runway lights markings.

Having said that, I cannot see any reason for a large differential power application, nor do I think the aircraft did it by itself

Seems like an error then. I’ve read reports of crew going for wrong levers before (ie flaps instead of gear), appears like vacating here, changing to idle thrust but for some reason advanced the right thrust to full? But then they talk about nosegear failure, which is weird as you wouldn’t normally connect that to an increase in thrust event especially from one engine.

 

[copperman]

Maybe not so “low speed” …

'Cynical': Passengers fume at Jetstar's ’low speed‘ claim after tarmac emergency

A counselling service has been set up for passengers on the affected flight.

www.nzherald.co.nz

 

[Saab34]

Some stupid quotes from the passenger in that article. I really wish the media wouldn’t quote everything that comes out of a passengers mouth. However it’s what sells a newspapers these days I guess.

 

[moa999]

"She said the landing felt turbulent almost immediately and the plane was travelling at what felt like fast speeds."

Maybe they should land the plane at slow speeds

 

[drron]

"She said the landing felt turbulent almost immediately and the plane was travelling at what felt like fast speeds."

Maybe they should land the plane at slow speeds

She also said this.
“I would love to read the report and know what speed we were going because it actually sped up while we were crashing.”