Wikiposts
Search
Accidents and Close Calls Discussion on accidents, close calls, and other unplanned aviation events, so we can learn from them, and be better pilots ourselves.

PC12 down in Nevada

Thread Tools
 
Search this Thread
 
Old 27th Feb 2023, 16:59
  #21 (permalink)  
 
Join Date: Apr 2008
Location: cowtown
Posts: 898
Received 59 Likes on 42 Posts
Any tips on maintaining minimum ice speed in the climb for this particular model ?
Any thoughts on Va, Vb for this particular model ?
Some aircraft have very large differences between cruise and Va , Vb this particular model may fall into that group . If the tracking speeds are accurate he was already forty knots over Va in an area of reported light to moderate chop turbulence and an area forecast to have moderate to severe turbulence warning .

Last edited by fitliker; 27th Feb 2023 at 18:10.
fitliker is offline  
Old 27th Feb 2023, 18:07
  #22 (permalink)  
 
Join Date: Dec 2007
Location: same planet as yours
Posts: 547
Received 7 Likes on 6 Posts
Originally Posted by cncpc
I'd be interested in any insights into "backfire sounds".
This was the witness interview, on which my post was based.
DIBO is online now  
Old 27th Feb 2023, 19:41
  #23 (permalink)  
fdr
 
Join Date: Jun 2001
Location: 3rd Rock, #29B
Posts: 2,956
Received 861 Likes on 257 Posts
Originally Posted by 3FG
NTSB says the plane broke up in flight:
https://www.kolotv.com/2023/02/25/ca...s-lyon-county/

The path shown in post #7 shows a spiral descent of approximate diameter 1/2 mile. The distance between Seneca and Seminole roads is 1/2 mile according to my guestimate from Google Maps
The in flight break up was likely to have occurred in this event, the question is if a failure precipitated the dive or not, and I suspect that the relatively close proximity of the liberated components indicate they failed in the descent rather than at the start of the event. The odd wiggle off route, recovery to track and then odd flightpath in vertical and horizontal components are suggesting either vertigo or a medical event to the pilot. Causation may come out quickly, but would suspect it will take time. The outer wing failure will be a point of concern to determine if the failure was in overload or from pre existing cracking.

fdr is offline  
Old 27th Feb 2023, 22:28
  #24 (permalink)  
 
Join Date: Nov 2016
Location: Lakeside
Posts: 534
Received 0 Likes on 0 Posts
Guessing a transplant. Heart, kidney, liver...... time is of the essence....
Concours77 is offline  
Old 27th Feb 2023, 22:54
  #25 (permalink)  
Thread Starter
 
Join Date: Jul 2013
Location: California
Age: 59
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by fitliker
Any tips on maintaining minimum ice speed in the climb for this particular model ?
Any thoughts on Va, Vb for this particular model ?
If design maneuvering speed is 166kts as I think it might be, then he was right about at that speed during the climb right up until the first deviation from course. I'd think that minimum speeds in icing wouldn't be higher than Va, but I don't know. My first thought in weather that bad is possibly severe icing causing a severe trim problem--perhaps after a failed/assymetric deicing operation--causing the AP kick off and hand the plane back out of trim and perhaps in an unusual attitude.

Originally Posted by Concours77
Guessing a transplant. Heart, kidney, liver...... time is of the essence....
I don't know but I've been told by someone involved in a different Medivac operation years ago that the pilots are not briefed on the patient's condition or the urgency or necessity of the flight. The reason, of course, is to prevent them from being heroic and flying when they really shouldn't. Many of these flights are end-of-life situations where the patient is relocated for comfort and convenience, not transplants or extremely urgent care. As uncomfortable as the question may be, I would like to know the situation of the patient in this case, but I'm betting that we won't find that out.
BrogulT is offline  
Old 28th Feb 2023, 00:20
  #26 (permalink)  
 
Join Date: Mar 2005
Location: N/A
Posts: 5,933
Received 392 Likes on 207 Posts
The NTSB sent a full investigation team of 11 members to the site and held a news conference on Sunday to discuss their initial findings.The investigators said part of the right wing, the horizontal stabilizer and elevator all separated from the plane and found about 1,200 yards from the main wreckage.
megan is offline  
Old 28th Feb 2023, 03:17
  #27 (permalink)  
 
Join Date: Aug 2004
Location: US
Posts: 507
Received 5 Likes on 3 Posts
. As uncomfortable as the question may be, I would like to know the situation of the patient in this case, but I'm betting that we won't find that out.
I have looked but found nothing. I have some exposure to these operations and most of the movements should have been done by land. It is an extremely lucrative business.
Rates of $ 30 k per flying hour are not uncommon.
20driver is offline  
Old 28th Feb 2023, 03:42
  #28 (permalink)  
 
Join Date: Nov 2016
Location: Hong Kong
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
In general, patients in fixed wing air ambulance operations are more stable than those who need rotor wing medivac. In my opinion, those who fly their choppers are true unsung heros. I would also like to say flight nurses in this field are equally or even more courageous and skilled in their own profession.

From Reno to SLC in the snowy wx by PC-12. Who knows what was the true reason for this medivac ops. As 20driver mentions, I have heard many stories of lucrative deal in air ambulance ops, especially with Native American/First Nation contracts.


okipoki is offline  
Old 28th Feb 2023, 04:21
  #29 (permalink)  
 
Join Date: Feb 2023
Location: New Brunswick
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
I did Medical air ambulance in Eastern Canada for a number of years, it was demanding flying however trips were cancelled due weather and there was no pressure to complete the trip, we simply waited until it was operationally safe to go.
NPSH1 is offline  
Old 28th Feb 2023, 05:00
  #30 (permalink)  
 
Join Date: Mar 2005
Location: America's 51st State
Posts: 291
Received 43 Likes on 16 Posts
This post from B2N2 is right on the money!
  • Night
  • IMC
  • Icing
  • Bad weather
  • Single pilot

Pick one…

I flew aeromedical in WA in the PC12 - the 45, 47 & 47E (NG). The 45 AP would regularly drop out even in light turbulence (but could be reset by the pilot). Additionally, the pilot (& medical crew) always knew the patient priority.

Regretfully, management dictated that low priority patients would be transferred at night despite advice from the pilot body that low priority patients should only be transported by day. Management’s main concern is getting the patients collected, rather than the safety of aeromedical crews. In north-west WA, if the one & only engine stops, you’re likely to be in big trouble given the lack of available landing areas with lighting.

Unfortunately, one of these types of accidents will have to happen to drive change…

Just my 2 lire’s worth of how things are done on other parts of the globe.

RIP to all involved in this tragedy…

VH-MLE
VH-MLE is offline  
Old 28th Feb 2023, 08:44
  #31 (permalink)  
 
Join Date: May 2005
Location: Milton Keynes
Posts: 1,070
Likes: 0
Received 0 Likes on 0 Posts
What would be the impact of all night flights being multi engine multi crew? That would seem to be a start.
22/04 is offline  
Old 28th Feb 2023, 09:04
  #32 (permalink)  
 
Join Date: Apr 2014
Location: Korea
Posts: 126
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by BrogulT
a failed/assymetric deicing operation
The information that is out there suggests that the plane was kept in hangar until taxiing out, and deicing was neither needed nor performed.
Euclideanplane is offline  
Old 28th Feb 2023, 11:12
  #33 (permalink)  
fdr
 
Join Date: Jun 2001
Location: 3rd Rock, #29B
Posts: 2,956
Received 861 Likes on 257 Posts
Originally Posted by VH-MLE
I flew aeromedical in WA in the PC12 - the 45, 47 & 47E (NG). The 45 AP would regularly drop out even in light turbulence (but could be reset by the pilot). Additionally, the pilot (& medical crew) always knew the patient priority.

Regretfully, management dictated that low priority patients would be transferred at night despite advice from the pilot body that low priority patients should only be transported by day. Management’s main concern is getting the patients collected, rather than the safety of aeromedical crews. In north-west WA, if the one & only engine stops, you’re likely to be in big trouble given the lack of available landing areas with lighting.

Unfortunately, one of these types of accidents will have to happen to drive change… Just my 2 lire’s worth of how things are done on other parts of the globe. VH-MLE
VH-, I manage and fly my own medivac jets, and I concur with you wholeheartedly. I enjoy the tasking, however, I often will amend a tasking schedule for common sense, while expeditious handling is desirable as a patient outcome, so is getting there in one piece, and in international medivac which is all that I do, a divert can be a major problem to the patients care. "Just say no" is easier to say than do, but is in the interest of the patient, medical team, and the operation. I have lost too many medical friends in helo and fixed wing medivac ops to conditions that were avoidable with some care. The regulations that apply to medivac and air ambulance are in general nonsense, and do not achieve anything more than dry ink by regulators, they do not reduce risks in what can be critical operations, often they increase risk.
fdr is offline  
Old 28th Feb 2023, 13:54
  #34 (permalink)  
 
Join Date: Aug 2004
Location: US
Posts: 507
Received 5 Likes on 3 Posts
NPSHI - Eastern Canada
I used to fly into Kingston Ontario regularly and there was often a Medivac on the ramp. Usually a B 1900, twin pilot.
The conditions those companies operate under is completely different than the US. They are a cost plus service contractor to the Health Service who are pretty stingy.
Even then there was waste but no price gouging.
The pilots told me they were never put under pressure. The biggest issue was often inbound to native reserves with gravel strips , no ATC or local weather.
They seemed to like the flying. As they were all young it was a stepping stone job.
20driver is offline  
Old 28th Feb 2023, 15:10
  #35 (permalink)  
Thread Starter
 
Join Date: Jul 2013
Location: California
Age: 59
Posts: 27
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Euclideanplane
The information that is out there suggests that the plane was kept in hangar until taxiing out, and deicing was neither needed nor performed.
I was referring to in-flight operation of the boots.
BrogulT is offline  
Old 28th Feb 2023, 18:01
  #36 (permalink)  
 
Join Date: Mar 2006
Location: France
Age: 64
Posts: 84
Received 0 Likes on 0 Posts
Victims of Nevada medical plane crash identified - CBS News

Slightly more up to date news, the pilot apparently learned to fly when he was about 40 years old. Patient was 69, and his wife 66. Medics 32 and 27 .All very sad.
lossiemouth is offline  
Old 28th Feb 2023, 20:34
  #37 (permalink)  
 
Join Date: Jun 2005
Location: Eu
Posts: 339
Likes: 0
Received 1 Like on 1 Post
Originally Posted by B2N2
  • Night
  • IMC
  • Icing
  • Bad weather
  • Single pilot

Pick one…..
Pretty well sums it up !! Possibly pick 2 to ensure a poor outcome .
Jack D is offline  
Old 28th Feb 2023, 20:36
  #38 (permalink)  
 
Join Date: Mar 2005
Location: Wyoming
Posts: 512
Received 37 Likes on 15 Posts
NTSB video of crash site

havoc is online now  
Old 1st Mar 2023, 00:24
  #39 (permalink)  
 
Join Date: Feb 2023
Location: New Brunswick
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by 20driver
NPSHI - Eastern Canada
I used to fly into Kingston Ontario regularly and there was often a Medivac on the ramp. Usually a B 1900, twin pilot.
The conditions those companies operate under is completely different than the US. They are a cost plus service contractor to the Health Service who are pretty stingy.
Even then there was waste but no price gouging.
The pilots told me they were never put under pressure. The biggest issue was often inbound to native reserves with gravel strips , no ATC or local weather.
They seemed to like the flying. As they were all young it was a stepping stone job.
I have plenty of time in BE100/200 types for Air Ambulance work and there were no single pilot operations with those aircraft types.in the locations I worked amongst the various operators. Also not aware of P12 operations as well as that aircraft type wasn't suitable in Eastern Canada(Maritimes).
NPSH1 is offline  
Old 1st Mar 2023, 01:56
  #40 (permalink)  
fdr
 
Join Date: Jun 2001
Location: 3rd Rock, #29B
Posts: 2,956
Received 861 Likes on 257 Posts
Originally Posted by havoc
Right wing appears to have failed mid span, inboard of the aileron inner span. Is there a spar splice in that area? The failure looks to be quite chord wise.
fdr is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.