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Hawker Hunter down at Shoreham

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Hawker Hunter down at Shoreham

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Old 26th Aug 2015, 20:37
  #401 (permalink)  
 
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Simplistic.

Manoeuvring nine aircraft in formation is a significantly different prospect to manoeuvring a solo.
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Old 26th Aug 2015, 20:38
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I looked at 2014's Hunter display at Shoreham Airshow by the same aircraft: https://www.youtube.com/watch?v=wrIzRdcSizM

Jump to 45:07 to 45:20 you will see the aircraft start the display coming in from the left of the crowd line, doing a roll and making a left turn away from the airport. From earlier part of the video, you can see that the crowd line is just between the grass runway and the airport buildings, approximately parallel to the A27 and facing Lancing College.

The aircraft goes around in a turn over the River Adur and approaches show centre (the airport crowd line) head on, pulls up and when the loop is almost completed, banks starboard and finishes flying past the crowd line level towards the west.

Contrast with this year's display as seen on
https://www.youtube.com/watch?v=PeSpNNxcVEg filmed from 50°50'50.10"N 0°17'34.10"W
https://www.youtube.com/watch?v=pvHplYmh2f8 filmed from 50°51'0.82"N 0°16'43.21"W

2014's display starts the same as this year's display where the aircraft did the same left to right flypast, roll and left turn to come around towards show centre head on. Whereas in 2014 it did a full loop along the north-south axis, this year it did a 1/4 clover starting along the north-south axis, 1/4 roll and then the rest of the loop and crash in the east-west axis . Assuming both years' display routines were planned to be the same, then we may suspect something went wrong, whether human or mechanical, that caused the routine to deviate at the initial quarter loop to turn into a clover.

Notice also that the flying this year seemed tardy, where the plane wasn't level while at the top of the loop. I can't help thinking why this year, the aircraft started the 1/4 clover climb at such a great distance from the airport's grass runway (where the crowd line was), when approximately abeam of Lancing College. They usually display much closer to the crowd line at airshows.
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Old 26th Aug 2015, 20:40
  #403 (permalink)  
 
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Noted elsewhere than average road deaths per day in the UK is between four and five.
These people probably were often not doing anything considered dangerous, but died anyway.
The Hunter accident was very unfortunate, and I do wonder about the altitude chosen. Low flypasts OK, but low aerobatics? Anything more than things that do not involve large changes in height. Rolls along a straight axis OK, but not much else at low level,
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Old 26th Aug 2015, 21:50
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All this talk of non spectators becoming in inadvertently involved in a n accident- air France 4590 crashed onto a hotel -that was a pleasure flight too. Should we have a rule that no aircraft can ever overfly any area that might contain people who haven't considered the risk of it landing on them inadvertently? A lot of airports would have to close!
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Old 26th Aug 2015, 21:51
  #405 (permalink)  
 
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Originally Posted by lookahead
...approaches show centre (the airport crowd line) head on, pulls up...
Is this allowed? It would seem to permit disintegration products to fly straight into the crowd. The rules formulated after the Farnborough Derry dh110 crash were supposed to prevent this.
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Old 26th Aug 2015, 22:01
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sharksandwich et al

the issue is not whether victims who haven't assumed a risk to which they were involuntarily exposed don't sometimes get hurt or killed. they do.

rather the issue is whether events such as flying displays or other spectacles which carry the risk of causing large numbers of casualties when (not if) something goes wrong will/should face tougher restrictions to further protect those who aren't participants or spectators.

as a practical matter, i would guess that commercial air shows might face far higher, perhaps prohibitive, insurance premiums in future which has nothing to do with government oversight but rather the market telling punters how much they need to pay to for the risk they impose on others

best regards
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Old 26th Aug 2015, 22:18
  #407 (permalink)  

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But it is not simply an accident. It's not just legal mumbo-jumbo to distinquish between various types of activities and the degree of risk inherent in and/or assumed by those who participate or choose (paying or not) to gather and watch as opposed to those who are uninvolved but get killed or injured without assuming any risk.
But in a day and age where everyone knows what goes on at an airfield, especially but not necessarily whilst during an airshow, shouldn't anyone who drives their car close to an airfield factor in the additional risk that something aircraft related might happen to them whilst transiting its zone of influence?

In the same way, if I choose to drive past a school without slowing down and run a pupil over, the justification for my speed being that it was closed for the Summer holiday, it seems right that my risk assessment should be called into question because, closed or not, schools are "danger" areas that, regardless, warrant slower speeds.

But, at this point in time, I agree, that argument seems a stretch....
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Old 26th Aug 2015, 22:46
  #408 (permalink)  
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Originally Posted by henry_crun
Is this allowed? It would seem to permit disintegration products to fly straight into the crowd. The rules formulated after the Farnborough Derry dh110 crash were supposed to prevent this.
If you were never allowed to fly towards the crowd line you'd just get further and further away.
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Old 27th Aug 2015, 00:52
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Hawker Hunter fuel transfer

For anyone interested in the fuel management system for the Hunter, it is cited in the NTSB report of a Hunter that crashed on approach to MHT in 1998. The report also cites a paragraph from the Pilot's Manual documenting conditions where the fuel gauges do not read accurately. Probable cause was "Fuel exhaustion, resulting from the pilot's reliance on an inaccurate fuel quantity indicating system." Though there was no post-crash fire, there was fuel in the wing tanks - the fuselage tanks were empty.

There is still a company (ATAC) in the US that flies the Hunter for military training purposes. They've suffered the loss of two, one in 2012 and one in 2014 both on approach to Pt. Mugu NAS after returning from flights. Both crashed on approach in nearly the same location and both had post-crash fires with one pilot reporting a fuel transfer problem prior to crash. No final reports for these last two yet.

Any former Hunter pilots out there that can comment on the fuel management system?
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Old 27th Aug 2015, 04:09
  #410 (permalink)  
 
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From memory, in the MHT accident the pilot (who I knew and had flown the Hunter with) probably knew that he was short of fuel due to a change of intentions on finals and all aeroplanes have a certain amount of unusable fuel; he probably flamed out. The 2012 ATAC accident resulted from the pilot deliberately continuing the sortie following a fuel transfer failure such that he recovered with fuel in the underwing tanks on one side with empty underwing tanks the other side and he departed during the finals turn. The 2014 accident was probably the result of getting too slow in the finals turn and stalling.

Last edited by LOMCEVAK; 27th Aug 2015 at 11:25.
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Old 27th Aug 2015, 04:10
  #411 (permalink)  
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the issue is not whether victims who haven't assumed a risk to which they were involuntarily exposed don't sometimes get hurt or killed. they do.

rather the issue is whether events such as flying displays or other spectacles which carry the risk of causing large numbers of casualties when (not if) something goes wrong will/should face tougher restrictions to further protect those who aren't participants or spectators.

as a practical matter, i would guess that commercial air shows might face far higher, perhaps prohibitive, insurance premiums in future which has nothing to do with government oversight but rather the market telling punters how much they need to pay to for the risk they impose on others
I suspect lawyers interpreting the law of negligence will determine what measures are taken to reduce the risk and cost of liability for loss resulting from events at air shows.
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Old 27th Aug 2015, 05:18
  #412 (permalink)  
 
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Chesty - Aircraft are required to approach from each side along a flight line a certain distance from the crowd. Approaching head on contravenes this requirement. Pulling up before reaching the crowd line will cause any disintegration products to be thrown at the crowd.
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Old 27th Aug 2015, 06:13
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Look at CAP 403 if you need to know details regarding overflight of spectators, it says...

Pilots should plan their flying sequence such that they can always regain the display line without infringing the minimum lateral separation distance from the crowd line. Effects of any on-crowd velocity vectors and on-crowd wind component must be taken into account.

So pilots can fly towards the crowd (and over it in some cases if they have specific written permission from the CAA GA Unit).
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Old 27th Aug 2015, 07:28
  #414 (permalink)  
 
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Piece of Cake - CAP403 "Effects of any on-crowd velocity vectors..." means just that. It does not imply permission for a direct head-on assault.

Flying over the crowd is permitted by the waiver I quoted earlier, but I would hold that this applies to a paying crowd and not an entire townscape.
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Old 27th Aug 2015, 07:54
  #415 (permalink)  
 
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Flying over the crowd is permitted by the waiver I quoted earlier, but I would hold that this applies to a paying crowd and not an entire townscape
Very few venues where crowd rear arrivals (CRA) are approved and flown that don't involve the overflight of a built-up area beforehand. This is all considered as part of the approval to fly a CRA at any specific venue. Suitable 'escape' options have to be available until the formation is then 'committed' to continue over the crowd at the event. The options for any single-engine aircraft in the formation are key to this approval.

Look at somewhere like Bournmouth and you have a 'deep' built-up area prior to reaching the main crowd then display line. Perhaps a Hawk has the speed (energy) to fly clear following an engine failure but a Hurricane couldn't.
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Old 27th Aug 2015, 08:04
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CRA over a bua simply cannot be condoned. Anything could happen. A pilot could become ill. His elderly aircraft could hiccup. His ground crew might make another mistake. A heron might get in the way. So many unknowns. It is not safe to assume that all eventualities have been considered. You have to look also at the possible consequences, hundreds of people dead, a whole town infrastructure demolished. That should not be risked, however low you might think the risk to be.
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Old 27th Aug 2015, 08:15
  #417 (permalink)  
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Henry, how would you propose a 360 be performed, for instance? At some point during every lateral maneuver you have to be pointing at the crowd, albeit briefly.
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Old 27th Aug 2015, 08:16
  #418 (permalink)  

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Look at somewhere like Bournmouth and you have a 'deep' built-up area prior to reaching the main crowd then display line. Perhaps a Hawk has the speed (energy) to fly clear following an engine failure but a Hurricane couldn't
I was at the Bournemouth show and thought that the number of boats just outside the box are getting larger with each year. I also spent some time on the top of Alum Chine during the Red Arrows display on Saturday and I estimate that the single aircraft was only 200ft above the cliff top heading north over the town.
I'm relieved to understand that there would be sufficient energy to clear the town if there was a bird strike.
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Old 27th Aug 2015, 08:25
  #419 (permalink)  
 
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I don't know where some get their information from but lets make this crystal clear. At NO point did the Hunter fly at the crowd or over it, this is simply wrong! I was there and it flew straight down the display axis and then straight up into a vertical climb and then rolled 90 degrees into a quarter clover to the north of the airfield. This in complete accordance with his published display routine. It did not run in from the North as the BBC are still showing on their graphics, ran in from the sea down the display line and well away from the crowd! Why can't people get their FACTS right so much utter rubbish has been spouted on this tragic accident it winds me up no end.
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Old 27th Aug 2015, 08:26
  #420 (permalink)  
 
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I think a few people are making things up here.

Yes, you are allowed to fly directly at the crowd.
Watch any red arrows display, any F16, any Typhoon. They will all at some point head towards crowd centre.

If you were to see the size of the area that any jet display covers in plan view, you would realise that it is utterly impossible to not overfly houses and roads in any display over the UK.

Just as a point of interest, you might be interested to know that displaying over the water is more dangerous for the pilots. You might not care, but it can be very tricky for the pilot to judge depending on sea state.
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