Two helicopters collide - Gold Coast, Queensland - Sea World 2/1/2023
It surprisingly works - if you're bored it's great to try. Over land at typical helicopter altitudes it might not be possible to discern from ground clutter, but out over the water I've had a crossing (at 90°) S-92 return (1000' below, perhaps 7-8nm away) make it's way across the radar display before - the greater cross section likely helped. We couldn't believe it at first, but it was backed up by a lone TCAS diamond in the vicinity of the radar return, as well as us eventually visually identifying the aircraft outside.
Last edited by ApolloHeli; 5th Jan 2023 at 16:51.
I have seen radar returns that seemed to be caused by another helicopter using the same make/model of radar as installed on the receiving aircraft....but nothing empirical to back that up.
But all indications it was another company aircraft operating in our area and along our track offshore.
But all indications it was another company aircraft operating in our area and along our track offshore.
It surprisingly works - if you're bored it's great to try. Over land at typical helicopter altitudes it might not be possible to discern from ground clutter, but out over the water I've had a crossing (at 90°) S-92 return (1000' below, perhaps 7-8nm away) make it's way across the radar display before - the greater cross section likely helped. We couldn't believe it at first, but it was backed up by a lone TCAS diamond in the vicinity of the radar return, as well as us eventually visually identifying the aircraft outside.
This post is not a criticism of operator or crew practices.
Passenger seat belts, *nothing unusual* to be seen in these pictures, but should we expect better design, can we do better?
The picture suggests that the waist worn life vest interfered with optimal seat belt positioning, by forcing the locking clasp upwards. This is not uncommon, it is normal practice.
The higher the position of the seat belt clasp:
1/ the shoulder belts move inwards from shoulder toward the neck.
2/ The lap belts no longer "pin" the pelvis against the seat cushion.
https://www.faa.gov/pilots/safety/pi.../seatbelts.pdf
Consider the effects of ill-fitting belts on the occupant during a partially or fully inverted impact.
The life vest is only useful if the passenger, pilot or co-passenger remains conscious to deploy it.
Life vest versus seat belt
A high clasp position moves shoulder belt into neck?
Pilot helmets.
The video portrays the explosive effect of the impact. Fortunately the pilot was not blinded or concussed by the debris and so was able to land. He was also filmed pulling a passenger from wreckage. What do we think of flight helmets for pilots in single pilot, commercial passenger ops? Law enforcement, media and medevac ops have transitioned to helmets. It seems a small price to pay to replace a slice of swiss with cheddar?
Mjb
Passenger seat belts, *nothing unusual* to be seen in these pictures, but should we expect better design, can we do better?
The picture suggests that the waist worn life vest interfered with optimal seat belt positioning, by forcing the locking clasp upwards. This is not uncommon, it is normal practice.
The higher the position of the seat belt clasp:
1/ the shoulder belts move inwards from shoulder toward the neck.
2/ The lap belts no longer "pin" the pelvis against the seat cushion.
https://www.faa.gov/pilots/safety/pi.../seatbelts.pdf
Consider the effects of ill-fitting belts on the occupant during a partially or fully inverted impact.
The life vest is only useful if the passenger, pilot or co-passenger remains conscious to deploy it.
Life vest versus seat belt
A high clasp position moves shoulder belt into neck?
Pilot helmets.
The video portrays the explosive effect of the impact. Fortunately the pilot was not blinded or concussed by the debris and so was able to land. He was also filmed pulling a passenger from wreckage. What do we think of flight helmets for pilots in single pilot, commercial passenger ops? Law enforcement, media and medevac ops have transitioned to helmets. It seems a small price to pay to replace a slice of swiss with cheddar?
Mjb
Last edited by mickjoebill; 6th Jan 2023 at 00:50.
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The video indicated that just after the tap on the shoulder, there was impact showing debris coming in from the front passenger's right seat. I realise that the ascending helicopter was to the left of the descending helicopter, but the debris to the front right might indicate that the ascending helicopter had passed under and collided on the right cabin of the descending helicopter.
Approach was from the left and below and contact was made by the ascending blades on the front right of the cabin.
Reasonable ?
Approach was from the left and below and contact was made by the ascending blades on the front right of the cabin.
Reasonable ?
It appears to me,(50 years LAME, Commercial licence) . that the greatest change in the operation prior to this event is the change in command seat from right to left. The first machines operated with this configuration?Entirely different visual environment for the pilots.Maybe a factor in the sequence?
The first machines operated with this configuration?Entirely different visual environment for the pilots.Maybe a factor in the sequence?
Machines with only 2 in the front in separate seats can have the collective at the RHS seat - thus the pilot can keep his hand on the cyclic while twiddling radio knobs with the left. But put a bench seat in the front, and he is on the left again.
Not a factor, except for the blind spot from the pillars, common to a seat on either side, and something which GT actually got right.
The A pillar vision block is a factor not only for aircraft but automobiles as well. And it's does not matter which side you fly from. It's good practice to get the head moving around more when in the circuit or traffic area, lean forward/back or even put in some yaw pedal to check behind the pillar. Especially if you are in base leg and someone could be on final. I've had a C172 on final that I did not see until later than I would have preferred as he was closing in behind the A pillar.
Never seen an aircraft return on wx radar.
What do we think of flight helmets for pilots in single pilot
Never seen an aircraft return on wx radar.
Also have had the radar altimeter go off as a DC9 passed under us. We had a 1000ft separation and we had the RA set to 2500ft
The video indicated that just after the tap on the shoulder, there was impact showing debris coming in from the front passenger's right seat. I realise that the ascending helicopter was to the left of the descending helicopter, but the debris to the front right might indicate that the ascending helicopter had passed under and collided on the right cabin of the descending helicopter.
Approach was from the left and below and contact was made by the ascending blades on the front right of the cabin.
Reasonable ?
Approach was from the left and below and contact was made by the ascending blades on the front right of the cabin.
Reasonable ?
Even if the relative motion of the ascending helicopter is from left to right as viewed from the perspective of the descending helicopter, the high tip speeds of the main rotor mean that the retreating blade still moves from right to left relative to the descending helicopter's nose, causing the impact and debris to appear from the right as seen in the video.
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Interesting mention of helmets.
There is a strong argument that a visor in front of the pilots eyes can greatly improve the passengers chance of survival in some, not uncommon (enough) circumstances.
Thankfully not an issue in the crash under discussion, but had the pilots eyes been full of plexiglass/smashed Raybans……..
(As mentioned: the tap on the right shoulder may have saved him from that - head turning right at the moment of impact - which must have been like a bomb going off in the instrument panel!!)
I don’t think a helmet, with visor down, should be mandatory, but it should be encouraged.
(Often actively discouraged as it has the appearance of signalling that the operation, a scenic flight in this case, must be “dangerous”.)
There is a strong argument that a visor in front of the pilots eyes can greatly improve the passengers chance of survival in some, not uncommon (enough) circumstances.
Thankfully not an issue in the crash under discussion, but had the pilots eyes been full of plexiglass/smashed Raybans……..
(As mentioned: the tap on the right shoulder may have saved him from that - head turning right at the moment of impact - which must have been like a bomb going off in the instrument panel!!)
I don’t think a helmet, with visor down, should be mandatory, but it should be encouraged.
(Often actively discouraged as it has the appearance of signalling that the operation, a scenic flight in this case, must be “dangerous”.)
Statistically, the take-off and landing are more dangerous than cruise, and Sea World has their frequent operations down to a fine art - and I speak as a passenger on one of their longer joyflights a couple years back. But one must ask when does PPE (a helmet) become unpalatable in an OH&S context just because it's 'a passenger operation' - given there's documented history of birds coming through helicopter canopies including on the Gold Coast and helmets are proven to minimise injuries in even relatively minor accidents.
Given the choice of two identical operators, one with a pilot in a Nomex flying suit, work boots & helmet, the other in shirt sleeves, Rayban's and deck shoes, I'd pick the former every time, for the simple reason they're demonstrating not just saying they take safety seriously and 'at any cost' and go that little bit extra to try to make sure they go home to the wife & kids at the end of the day. But then again, the KRviatrix does frequently tell me I'm not right in the head so YMMV....
Radar works a treat, flying 212, 412, 76 could paint the guy in front (rear aspect) at twenty miles, used it for ensuring separation on crap days if going the same direction, also ensuring separation if the other was crossing traffic, ours was a cough, cough, VFR operation.Necessity irrespective of the number of pilots, in a 412 event the aircraft developed a severe vertical, pilots had helmets but both their heads went through the overhead windows above even though they were tightly strapped in, vertical was such that engines tore loose from bearers. Then you can have that cooling fan atop your head make an entrance into the cockpit. Some offshore chaps wear them. One 76 accident had the aircraft impact in a left wing down and the chap in the right seat hit his head on the broom closet. He exited and helped rescuers extract the trapped copilot, 45 minutes after the crash he collapsed and died, result of head impact on broom closet.
Btw, I’m a proponent for helmets anyway.
In a maritime environment such as this and with a light plexiglass windscreen such as fitted to the 130 (which is not bird-resistant) I would wear a helmet with visor down for bird strike protection alone, never mind crash survivability.
Btw, I’m a proponent for helmets anyway
few years back before covid kicked off..RIP deceased and speedy recovery of the survivors.
I have flown the H130 in the states, after years of being pax at downtown Vegas with Maverick. One is thankful this has not happened in and around busy McCarran ramp / Grand Canyon heliport.
If my memory serves me correct theres quite a few tour operators stateside or asia where pilots do wear helmets when flying the tourists around...but cannot think offhand who they are.
All the Best