Go Back  PPRuNe Forums > Aircrew Forums > Military Aviation
Reload this Page >

USMC F-35B Crash - 17 Sep 23

Wikiposts
Search
Military Aviation A forum for the professionals who fly military hardware. Also for the backroom boys and girls who support the flying and maintain the equipment, and without whom nothing would ever leave the ground. All armies, navies and air forces of the world equally welcome here.

USMC F-35B Crash - 17 Sep 23

Thread Tools
 
Search this Thread
 
Old 21st Sep 2023, 21:49
  #101 (permalink)  
 
Join Date: Apr 2009
Location: Phoenix, AZ
Posts: 636
Received 18 Likes on 15 Posts
Originally Posted by Old Boeing Driver
Gary Larson's Far Side Comeback Caught Readers By Surprise Thankfully for readers anxious for more Far Side from Gary Larson, the cartoonist would officially come out of retirement after nearly 25 years in 2019.Dec 28, 2022
"New Stuff" includes 9 cartoons with dates in 2020 and 2021. What other evidence is there of this "coming out of retirement"? "The Daily Dose" is all old work but I still enjoy it each morning.
EXDAC is offline  
Old 22nd Sep 2023, 06:16
  #102 (permalink)  
 
Join Date: Jan 2004
Location: Midlands
Posts: 745
Received 25 Likes on 8 Posts
Originally Posted by gums
Salute!

The Bee has an auto eject feature when in the last of the landing modes.

Apparently the USMC and maybe the RN Harrier folks wanted this. Seems the plane could roll rather sharply if certain things failed, and the installed system was quicker than the pilot.

Guess we wait for a report from USMC, and it might be a long time.......

And BTW, even the primitive FBW jet I flew 40 years ago would fly at last commanded/trimmed roll rate and gee following ejection unless completely outta control. So early motor failure crashes and controlled ejections were typified by descriptions of the jet flying ahead until reaching the AoA limiter, then descending until impact. One even landed slightly ahead of the pilot, broke one gear but was in fairly good shape. And the Thunderbird a coupla years back has a good pic of the plane that "landed" short of the rwy at Pete Field. Didn't burn and had only a few hundred pounds of gas left. Was throttle linkage failure and engine shut down when he retarded the throttle - "power lever angle" in some manuals, heh heh.

Gums sends...
Gums, great to see you back here.

The auto eject feature on the Bee is there to ensure safe ejection when a certain set of parameters are met during STOVL. An auto ejection in any other condition would I guess result in an immediate fleet grounding, as well as being the first time auto eject is used operationally!
Stitchbitch is offline  
Old 22nd Sep 2023, 06:53
  #103 (permalink)  
 
Join Date: Jun 2008
Location: London
Age: 67
Posts: 495
Likes: 0
Received 36 Likes on 13 Posts
If the pilot is to have a new nickname, can I suggest “Otto”?

There was a Lightning abandoned just west of RAF Valley in the late 70s, premeditated because one MLG was locked up. That aircraft was left allegedly with the AP in and it headed off towards Ireland but went down in the sea a few miles from Dublin, presumably when it ran out of fuel (not difficult). Rumour had it that its Northern Ireland driver had dialled up the DUB ILS…

if memory serves, that was the event which led to all RAF fast jet premeditated ejection drills including the selection of half aileron trim to induce a spiral dive and thereby avoid unexpected and unaccompanied long transits.
Fortissimo is offline  
Old 22nd Sep 2023, 08:14
  #104 (permalink)  
Ecce Homo! Loquitur...
 
Join Date: Jul 2000
Location: Peripatetic
Posts: 17,427
Received 1,594 Likes on 731 Posts
So if it clears the memory of Mode 5, datalink, HQ and other settings, I guess a question is does it also automatically clear the Mode 1, 2, 3 and Mode S settings….

The Marines said features that erase a jet’s secure communications in case of an ejection – a feature designed to protect both the pilot’s location and the plane’s classified systems – may also have complicated efforts to find it.

“Normally, aircraft are tracked via radar and transponder codes,” the Marines said. “Upon pilot ejection, the aircraft is designed to erase (or ‘zeroize’) all secure communication.”
ORAC is online now  
The following users liked this post:
Old 22nd Sep 2023, 08:28
  #105 (permalink)  
 
Join Date: May 1999
Location: Quite near 'An aerodrome somewhere in England'
Posts: 26,817
Received 270 Likes on 109 Posts
Rumour had it that its Northern Ireland driver had dialled up the DUB ILS…
So the late RFK, the pilot in question, used to assert!
BEagle is online now  
The following 2 users liked this post by BEagle:
Old 22nd Sep 2023, 17:28
  #106 (permalink)  
Thread Starter
 
Join Date: Sep 2010
Location: Nevada, USA
Posts: 1,609
Received 43 Likes on 30 Posts
Audio of 911 call from where the pilot landed including him speaking - age 47
RAFEngO74to09 is offline  
The following 2 users liked this post by RAFEngO74to09:
Old 22nd Sep 2023, 18:22
  #107 (permalink)  
 
Join Date: Aug 2015
Location: England
Posts: 344
Received 6 Likes on 6 Posts
I have read that there has been 7 or 8 F35 losses, depending on how they are categorised in a stated 721,000 hours. That seems to me to be a relatively high attrition rate for such a modern and highly sophisticated military jet.
Buster15 is offline  
Old 22nd Sep 2023, 18:27
  #108 (permalink)  
 
Join Date: Jul 2008
Location: Australia OZ
Age: 75
Posts: 2,585
Likes: 0
Received 53 Likes on 46 Posts
I don't have other miljet accident statistics to hand however I'd reckon the F-35 variants do well but then again I WOULD SAY THAT. Back at the ranch the pilot ejected at "2,000 feet after an aircraft failure" he says? Back to above YES "depending on how they [F-35 losses] are categorised" but why does that make a difference? How are other miljet stats categorised in your mind.
SpazSinbad is offline  
Old 22nd Sep 2023, 18:59
  #109 (permalink)  
 
Join Date: Aug 2015
Location: England
Posts: 344
Received 6 Likes on 6 Posts
Originally Posted by SpazSinbad
I don't have other miljet accident statistics to hand however I'd reckon the F-35 variants do well but then again I WOULD SAY THAT. Back at the ranch the pilot ejected at "2,000 feet after an aircraft failure" he says? Back to above YES "depending on how they [F-35 losses] are categorised" but why does that make a difference? How are other miljet stats categorised in your mind.
I mainly worked on military twin engine jets, Tornado and Typhoon.
We categorised aircraft losses as well as other things like aborted takeoff or component removals as either Basic which were attributable or Non Basic which were non attributable such as birdstrike or maintenance errors for example.
A heavy landing which resulted in aircraft being scrapped may be counted by some airforces but not by others.
The US sometimes use the term Mishap without a specific definition of the cause.
Hope that is clear.
Buster15 is offline  
Old 22nd Sep 2023, 20:42
  #110 (permalink)  
 
Join Date: Aug 2009
Location: Texas
Age: 64
Posts: 7,221
Received 408 Likes on 254 Posts
Originally Posted by Buster15
I have read that there has been 7 or 8 F35 losses, depending on how they are categorised in a stated 721,000 hours. That seems to me to be a relatively high attrition rate for such a modern and highly sophisticated military jet.
1 per 100,000 hours is a bit lower than I'd expect for military aircraft. (Or at least it's within the realm of "not bad" if you look at historical trends).
But one always wants it a bit lower.
The Osprey is at about 3 for the last ten years.
A couple of years ago the US Navy had a roughly 1.09 per 100k hours mishap rate.
For the Navy, with eight class A flight mishaps so far this year, its rate is 1.29 per 100,000 flight hours. For all of 2021, its rate was 1.09 per 100,000 flight hours. Both years’ rates are above the service’s 10-year average of .97 class A mishaps per 100,000 flight hours. They are not statistical outliers, however, according to the Navy’s calculations.
So it's within the error levels, or standard deviation.
Lonewolf_50 is offline  
Old 22nd Sep 2023, 22:46
  #111 (permalink)  
 
Join Date: Oct 2019
Location: USA
Posts: 861
Received 211 Likes on 116 Posts
Edit: Oops - didn't look up far enough.

News: CBS news just played the 9/11 call from the pilot made at a house he found after landing his parachute to report the missing jet to try to alert emergency services to the errant aircraft. No more details about the reason for separating from the jet.
MechEngr is online now  
Old 22nd Sep 2023, 23:54
  #112 (permalink)  
 
Join Date: Oct 2007
Location: A better place.
Posts: 2,319
Received 24 Likes on 16 Posts
Poor 911 dispatcher.
Probably wondered at first if someone was taking the mickey given some of the calls 911 get.
And she would have got a bollocking from her supervisor if she hadn't gone through the list of questions.
Doing what every good pilot does - she was following her checklist!
tartare is offline  
The following users liked this post:
Old 23rd Sep 2023, 00:26
  #113 (permalink)  
 
Join Date: Jul 2013
Location: Everett, WA
Age: 68
Posts: 4,418
Received 180 Likes on 88 Posts
Originally Posted by Lonewolf_50
1 per 100,000 hours is a bit lower than I'd expect for military aircraft. (Or at least it's within the realm of "not bad" if you look at historical trends).
But one always wants it a bit lower.
The Osprey is at about 3 for the last ten years.
A couple of years ago the US Navy had a roughly 1.09 per 100k hours mishap rate.
So it's within the error levels, or standard deviation.
Most other Navy aircraft have two engines, so an engine shutdown is not likely to result in a hull-loss accident.
Given the F-35 is single engine, any in-flight engine shutdown is going to be a forced landing at best - and in most cases going to be a hull loss.
Taking that into account, ~1/100,000 hours is damn good given an in-flight shutdown rate of 1/100,000 hours for a military engine is very impressive (that's the sort of number we strive for on commercial engines for 300 minute ETOPS).
tdracer is offline  
Old 24th Sep 2023, 00:07
  #114 (permalink)  
 
Join Date: Dec 2022
Location: Vaduz
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
US GAO and F35

Am not allowed yet to post links but his could be of some interest:

_www.gao.gov/assets/gao-23-105341.pdf_

(remove the _)
silentmachine is offline  
Old 24th Sep 2023, 14:03
  #115 (permalink)  
 
Join Date: Aug 2015
Location: England
Posts: 344
Received 6 Likes on 6 Posts
Originally Posted by Lonewolf_50
1 per 100,000 hours is a bit lower than I'd expect for military aircraft. (Or at least it's within the realm of "not bad" if you look at historical trends).
But one always wants it a bit lower.
The Osprey is at about 3 for the last ten years.
A couple of years ago the US Navy had a roughly 1.09 per 100k hours mishap rate.
So it's within the error levels, or standard deviation.
Appreciate this.
1/1000 hours may be ok historically.
But F35 is still quite new so it seems a bit on the high side so early in its life cycle.
Buster15 is offline  
Old 24th Sep 2023, 16:30
  #116 (permalink)  
Guest
 
Join Date: Dec 2004
Posts: 1,264
Received 180 Likes on 106 Posts
Originally Posted by Buster15
Appreciate this.
1/1000 hours may be ok historically.
But F35 is still quite new so it seems a bit on the high side so early in its life cycle.
That's not really how accident stats work if I'm interpreting your statement as meaning new things crash more than old things.

Typically in early life there's a fairly high accident rate as the platform 'beds in' and people figure out the hard way what the engineers got wrong. Then there's a mid-life low rate of accidents. Only after something is "properly knackered" does the accident rate start to tick up due to failure of old components - typically you see that in non-NATO countries but arguably there are a few examples like F-15 fatigue failures that might make the cut.

F-35's rate is pretty solid to be honest, though I'd always hope for better.
PPRuNeUser0211 is offline  
The following users liked this post:
Old 24th Sep 2023, 17:23
  #117 (permalink)  
 
Join Date: Apr 2010
Location: Herefordshire
Posts: 774
Received 569 Likes on 208 Posts
Originally Posted by pba_target
That's not really how accident stats work if I'm interpreting your statement as meaning new things crash more than old things.
Typically in early life there's a fairly high accident rate as the platform 'beds in' and people figure out the hard way what the engineers got wrong. Then there's a mid-life low rate of accidents. Only after something is "properly knackered" does the accident rate start to tick up due to failure of old components - typically you see that in non-NATO countries but arguably there are a few examples like F-15 fatigue failures that might make the cut.
F-35's rate is pretty solid to be honest, though I'd always hope for better.
Unless a number of losses can be attributed to a common root cause I don't see how they can be statistically significant. The losses so far appear to be due to a range of unrelated causes, some of which are due to human/environmental factors, not the F-35 itself.
Video Mixdown is online now  
Old 24th Sep 2023, 21:36
  #118 (permalink)  
 
Join Date: Jun 2009
Location: Baston
Posts: 3,285
Received 712 Likes on 250 Posts
Originally Posted by Video Mixdown
Unless a number of losses can be attributed to a common root cause I don't see how they can be statistically significant. The losses so far appear to be due to a range of unrelated causes, some of which are due to human/environmental factors, not the F-35 itself.
The bath-tub shape failure curve is virtually intrinsic to engineered artefacts. Even a fridge will either break down a few days after installation, or last for yonks. I have just changed a light-bulb for example. Yonks. The replacement may fail tomorrow.
langleybaston is offline  
Old 25th Sep 2023, 10:56
  #119 (permalink)  
 
Join Date: Apr 2011
Location: aus
Posts: 1,316
Likes: 0
Received 111 Likes on 69 Posts
Originally Posted by Video Mixdown
Unless a number of losses can be attributed to a common root cause I don't see how they can be statistically significant. The losses so far appear to be due to a range of unrelated causes, some of which are due to human/environmental factors, not the F-35 itself.
Theres some substantial rumors flying around that they pilot lost all the huds and MFDs. Checklist said land immediately, he followed his wingman down but due to weather missed that approach. He lost sight of the wingman and decided to bail out
rattman is offline  
Old 25th Sep 2023, 13:52
  #120 (permalink)  
 
Join Date: Aug 2007
Location: virginia, USA
Age: 56
Posts: 1,062
Received 15 Likes on 10 Posts
Originally Posted by gums
Salute!

.......And the Thunderbird a coupla years back has a good pic of the plane that "landed" short of the rwy at Pete Field. Didn't burn and had only a few hundred pounds of gas left. Was throttle linkage failure and engine shut down when he retarded the throttle - "power lever angle" in some manuals, heh heh.

Gums sends...
That whole investigation seemed to reek a bit- the T birds were holding for a VERY long time during the graduation ceremony waiting for the long running POTUS to finish, most or all were fuel critical, but any mention of that as even a factor of that was poo-pood in the investigation... ok ill put my conspiracy hat away......
sandiego89 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.