Helo Rollover/Blow over at Scatsta

[ChristiaanJ]

Thanks Eff Oh, I should have seen that myself.

[bravo 4 golf]

the aircraft was being towed out of the hangar and was blown over . No pax or crew onboard !

[mazakari]

Originally Posted by bravo 4 golf

the aircraft was being towed out of the hangar and was blown over . No pax or crew onboard !

If the aircraft was being towed, shouldn't someone have been inside covering the brakes ?? Not that it would have helped but procedures are procedures ............

Glad there were no injuries though.

maz

[ChristiaanJ]

B4G,
Thanks!
I worked with Bristow a very long time back, hence my interest.

Looks repairable, although the bill will clearly include a few new rotor blades. And if I was responsible, I'd have a very long and hard look at the main transmission gearbox, too... I'm sure they will.

[IronHen]

Shetland Average Wind

Originally Posted by Loose rivets

Anyone know the long term average W/V at Shetland?

... I seem to remember it was 12 kts average throughout the year.
There was once a storm that registered 160 kts or 176 kts in Unst but confirmation of an official record was denied as the met station was destroyed - it blew away!!

[Encyclo]

At least the tug/tractor stayed upright

[Mister Geezer]

Shame it was one of the helis in the new livery!!!

[Impress to inflate]

Spent 4-5 years in the shetlands and reguly saw gale force 11 to 12. I worked in the Brent field for 6 years and saw a gust of 167 knots. We were given plenty of warning to batten down the hatches and secure the boat.

[Mister Geezer]

I am sure a similar incident happened in the days of when British World operated their ATR72s to Sumburgh. Think one suffered the effect of the wind and was blown over slightly so that it came to rest leaning on a wing tip?

[UKpaxman]

Originally Posted by Mister Geezer

I am sure a similar incident happened in the days of when British World operated their ATR72s to Sumburgh. Think one suffered the effect of the wind and was blown over slightly so that it came to rest leaning on a wing tip?

Yep, I remember that. The ATR used to arrive first thing with a load of pax and the return to ABZ empty for the next load. I think it was just setting off from the terminal building and did a turn at very low speed and was caught by a gust. I did a few trips on the empty plane from Sumburgh and it's take off and climb rate into a strong headwind was very impressive for a turboprop.

p.s. don't forget the poor old Shorts 330 that was blown over at Scatsta on it's stopover one night - very indignant.

[rotorspeed]

So anyone like to guess how much the repair bill will be? And what should have been done to avoid this happening?

[ChristiaanJ]

Originally Posted by rotorspeed

...And what should have been done to avoid this happening?

Maybe they shouldn't have towed it out of the hangar in a howling gale in the first place?

[Overt Auk]

CJ

good idea. Don't let the helicopters out of the hangar on Shetland when the wind is over 30 knots.

That should give us all a good long winter break.

OA

[ChristiaanJ]

Overt Auk,
It would also reduce the bill for new rotor blades.....

Must have been gusting a lot more than 30 kts, though, for that to happen. Unless something went screwy...

[HOGE]

Ahh, takes me back to those halcyon days approaching Unst in the back of a Dash 7, the gusts, the buffeting, the screaming.

[pumaboy]

Originally Posted by Overt Auk

CJ

good idea. Don't let the helicopters out of the hangar on Shetland when the wind is over 30 knots.

That should give us all a good long winter break.

OA

How much ballast was on the machine when it rolled over and were the cabin doors opened.

This is not the first time a Puma has rolled over in windy condition's and seem's like it won't be the last.

[shetlander]

Hello

Ok i feel the need to get involved since Scatsta is only 20 miles north of my house.

As Puma-Boy say's; Its not the first time that a helicopter has rolled in and around Shetland in windy conditions.

Here is What happens when it rolls on a Heli-Deck on a Ship just off the coast of Shetland.





Quotes from that incident "the crew were very lucky to escape more serious injuries" - this was said after it was revealed that the co-pilot suffered a broken leg after being hit with debris from the rotors.
Cheers,
Shetlander

[ChristiaanJ]

Originally Posted by HOGE

Ahh, takes me back to those halcyon days approaching Unst in the back of a Dash 7, the gusts, the buffeting, the screaming.

How prudish....
That should have read: "the gusts, the buffeting, the screaming, the barfbags..."

[OffshoreHeli]

Wind

There was a ATP that scrapped a wing on take and had to divert to Lossiemouth to do a flaps up landing.
The aircraft on the West Navion was not wind related but due to the ships autopilot going offline and nobody noticed until it had gone through **degrees. at this point the autopilot was re-engaged and the thrusters came on full power. This with the Pitching/Roll moment of the ship was enough to tip the aircraft over. The co-pilot was seriously injured and nearly lost his leg but for the prompt action of the ships crew.
35 page accident report at the following link http://www.aaib.dft.gov.uk/sites/aai...pdf_029265.pdf

[HeliComparator]

Sorry OffshoreHeli you are not correct in asserting that wind was not the causal factor in the West Navion accident. Have a look at page 25 of the report you link to - the primary factor causing rollover is cited to be wind. There was no detectable lateral acceleration caused by the thrusters - this was hearsay at the time but is incorrect.

Contributory factors were the motion of the vessel due to the sea state, its list and the fact that the aircraft was not parrallel to the deck (on this type, the parking brake can hold the wheels so that the aircraft is not level to the deck)

HC