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

Ejection Seats - Typhoon FGR4 & Hawk T1

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.

Ejection Seats - Typhoon FGR4 & Hawk T1

Old 2nd Aug 2022, 10:09
  #21 (permalink)  
Join Date: Aug 2015
Location: Norfolk
Posts: 139
Likes: 0
Received 1 Like on 1 Post
Originally Posted by tucumseh View Post
Correct. M-B have never delivered a seat with cartridges fitted.

The various statements don't make it clear if it's the percussion cap or the filling, neither of which M-B make. However, it may be they're seen to deliver the assembled cartridge. The important thing is that, while annoying, the system picked the problem up.
Probably completely unrelated but:

Martin-Baker Careers | Pyro Inspector (ciphr-irecruit.com)

Does anypne remember the days when the carts were filled using plastic measuring cups (apparently)!
superplum is offline  
Old 2nd Aug 2022, 11:10
  #22 (permalink)  
Ecce Homo! Loquitur...
Join Date: Jul 2000
Location: Peripatetic
Posts: 14,272
Received 137 Likes on 71 Posts
Are they looking for a young bright spark?
ORAC is online now  
Old 2nd Aug 2022, 19:25
  #23 (permalink)  
Join Date: Jul 2008
Location: Australia OZ
Age: 74
Posts: 2,371
Likes: 0
Received 11 Likes on 11 Posts
"...Tripoli has been embarked with up to 20 F-35Bs. Marine officials told USNI News on Friday [29 Jul 2022] that its F-35Bs were not grounded as part of the ongoing ejection seat problems. Specific lots of ejection seats across the Air Force, Navy and Marine Corps — including F-35s — were found to have defective components. The services are in the process of clearing the seats for service with repairs. “Currently, Marine Corps F-35Bs are not grounded, and over 90 percent of the inspections on Marine Corps ejection seat cartridge actuating devices are now complete,” Marine Maj. Jay Hernandez told USNI News on Friday." https://news.usni.org/2022/08/01/car...renews-threats 01 Aug 2022
SpazSinbad is offline  
Old 3rd Aug 2022, 20:20
  #24 (permalink)  
Join Date: Nov 2011
Location: Threshold 06
Posts: 542
Received 1 Like on 1 Post
Glad to see you’ve still got an eye on the ball Tuc! 😉👏

So, just to recap. A sharp witted plumber (isn’t that an oxymoron?) spotted a potential problem, reported it and action was taken to resolve it PDQ? The ‘System’ working as advertised, it seems to me.

Of course, ‘The meejah’ will be pissed off because no nuns, nor balls of fire were seen by a Ms Jade Hoooeva of Birkenhead. ‘Aces officianados’ will make as much political capital out of it as they can, and pyro manufacturers (whoever they are….some outsourced to comply with US contract requirements, maybe?) will be nervous.

Personally I’m glad they found it.

Reminds me of many a time back in the EA, when a unit rep would call in to the office on a Tuesday saying “…..I’ve got a problem…what are you doing about it? “ Despite the DD bangin on about it 24/7, (love you George) It was always Friday afternoon before we were able to push out the warning instruction….😉


oldmansquipper is offline  
Old 4th Aug 2022, 19:14
  #25 (permalink)  
Join Date: Jul 2008
Location: Australia OZ
Age: 74
Posts: 2,371
Likes: 0
Received 11 Likes on 11 Posts
Another view of a complicated scenario it would appear: U.S. Air Force F-35s Join Grounded List With Martin-Baker Flaw | Aviation Week Network 29 Jul 2022 "...Although the US16 seat is affected, the Air Force said on July 28 there were no plans to ground the F-35A fleet due to the problem. The US16 [F-35 MB seat] has dual-redundant initiators for the cartridges, which the Air Force said mitigated the safety risk.... But the service decided to stand-down F-35As on July 29 in order to expedite the process of inspecting all of the cartridges exposed to the production defect, an Air Combat Command spokesman says...."

Last edited by SpazSinbad; 4th Aug 2022 at 19:49.
SpazSinbad is offline  
Old 15th Aug 2022, 21:15
  #26 (permalink)  
Join Date: Jul 2008
Location: Australia OZ
Age: 74
Posts: 2,371
Likes: 0
Received 11 Likes on 11 Posts
All US Air Force F-35s are flying again after ejection seat checks (defensenews.com) 16 Aug 2022 "...Service technicians inspected 706 cartridges from 349 F-35s, as well as additional supplies of spare cartridges, Air Combat Command spokeswoman Alexi Worley said in an email Monday. The Air Force has about 376 F-35As in its fleet. Of those cartridges, inspectors felt four could have problems and were replaced. Worley said further inspection of those four suspect cartridges showed they were not defective...."
"...Martin-Baker, the company that manufactures the seats, also found two more defective cartridges in its own stores in April. The company also found, during a quality check that followed, that its production line was creating defective cartridges...."
"...Martin-Baker said in a statement to Air Force Times on Aug. 7 that ejection seat checks the military started in July uncovered no defective parts in any aircraft, leaving the one found at Hill Air Force Base in April the only bad cartridge found in an F-35."
SpazSinbad is offline  
Old 17th Aug 2022, 14:36
  #27 (permalink)  
Join Date: Aug 2000
Location: Here and there.
Posts: 1,099
Received 31 Likes on 14 Posts
"The defective part was loose and missing the magnesium powder used to ignite the propellant that shoots someone to safety, Roberts said."

From that I take it only a very small amount of powder was missing. It would take someone with superhuman powers to say if a few grams of powder were present or not in a component that weighs a few kilos - give or take?

I strongly suspect the method of discovery was not "God-dang it Bert, this seems a mighty load lighter than it should be".


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.