By Mike Mount
Two recent in-flight emergencies involving troubled oxygen systems in the F-22 "Raptor" are unrelated to other, more worrisome breathing problems pilots have experienced for more than a year when flying the plane, according to U.S. Air Force officials.
The Air Force has been investigating why a number of F-22 pilots have experienced a mysterious loss of oxygen while in the air, causing dizziness and confusion known as hypoxia, since spring 2011.
But two recent incidents related to the F-22 oxygen system are considered regular mechanical issues not connected to the oxygen deprivation investigation, according to Air Force Lt. Col. Tadd Sholtis, a spokesman for the Air Force's Air Combat Command.
"The recent incidents that have resulted in new expressions of concern are of a different kind than the ones we have been focused on in recent months," Sholtis told CNN's Security Clearance.
Air Force officials have labeled the number of unexplained F-22 breathing incidents as "cause unknown," while labeling the two recent incidents as "cause known.
The latest problems prompted two members of Congress, Sen. Mark Warner, D-Virginia, and Rep. Adam Kinzinger, R-Illinois, to send a letter to the Air Force secretary last week demanding answers.
In an e-mail response to Security Clearance, Sholtis sent information on what Air Force initial investigations found in the two recent incidents. Sholtis said the mechanical issues were "not specific to the F-22 aircraft."
One of the incidents, an oxygen system malfunction on July 6, is still under investigation by the Air Force and the plane remains grounded, according to the Air Force information provided by Sholtis, but the incident is still listed as a "cause known" problem.
While returning from a training mission, the pilot from the 154th Wing of the Hawaii Air National Guard received a warning indication that the Onboard Oxygen Generating System (OBOGS) was malfunctioning and declared an in-flight emergency.
"The pilot experienced a hypoxic symptom in conjunction with the aircraft warning and activated the emergency oxygen system," according to the information given to Security Clearance. The pilot recovered and landed the plane without a problem after receiving emergency oxygen.
"The pilot has no lingering physiological effects and has returned to flight status. More details will be available when the investigation is complete, but we're confident the annunciation of the OBOGS warning during the flight points to the cause, which was a malfunction within the OBOGS," according to the information.
On June 26, an F-22 pilot from the 1st Fighter Wing was conducting routine flight operations out of Langley Air Force Base in Virginia. The pilot reported a "temporary restriction," in breathing and "was not receiving the normal flow of oxygen through the hose," to his face mask as he was on final approach. The pilot was able to land the plane safely, according to the information.
After parking the plane, the pilot remained in the cockpit and was instructed to engage the emergency oxygen system, the information said. The emergency system shoots pure oxygen into a pilot's mask as part of a safety protocol.
While the pilot was breathing the emergency air, he reported tightness in his chest for a short time, according to the information from Sholtis. It was later diagnosed as atelectasis related to breathing a high concentration of oxygen, the statement said. Altelectasis is defined as a partial or total lung collapse.
The unnamed pilot has since returned to flying and has flown five times since the June 26 incident with no aftereffects, according to the statement.
An investigation and analysis into what happened to the aircraft's oxygen system revealed a stuck valve. Audio recordings during the flight also registered the sounds of a stuck valve, the according to the information.
"To correct the mechanical issue, maintenance personnel removed and replaced the Breathing Regulator Anti-G (BRAG) valve, pilot breathing hoses, the Emergency Oxygen System (EOS) Regulator and the EOS shutoff valve," according to the statement.
Sholtis said the plane has since returned to service and the incident is listed as "cause known."
Warner and Kinzinger also asked about a May 31 incident where a F-22 crash landed when its wheels failed to extend upon landing. That incident was attributed to "a pilot new to the aircraft that involved no physiological symptoms and had no relation to the life support system," Sholtis said.
The Air Force has not released more information on the May incident, including details of how much damage was done to the service's most expensive aircraft.
Since the onset of the F-22 problems, the Air Force has taken a number of steps to mitigate more in-flight mystery incidents. Those steps include barring pilots from wearing an inflatable vest that assists their breathing during intense G-forces, as well as reducing the altitude the aircraft can fly.
Defense Secretary Leon Panetta also ordered the air service to keep F-22 flights to a limited area so pilots could safely return to a base if they experienced a problem with their oxygen systems.
Warner and Kinzinger also asked the Air Force for updated statistics on the number of hypoxia incidents on top of numbers already given to them by the Air Force.
Last month, the two members of Congress released numbers by the Air Force that showed pilots flying the F-22 Raptor reported illness from oxygen deprivation incidents 10 times as often as pilots of other fighter jets.
The data showed Raptor pilots have reported 26.43 hypoxia and hypoxia-like incidents per 100,000 flight hours. While that represents a mere fraction of total flight hours, it is far higher than incidents from other Air Force aircraft, including the A-10, the F-15E and the F-16.
But the two demanded new information when they saw higher numbers reported in media that did not reflect the earlier numbers they were given.
Sholtis said the Air Force was validating the numbers in response to the lawmakers' request, but said it does not look like there is an increase in the statistics already given.
There's definately a lot to know about this topic. I love all of the points you made.
https://www.news1.co.il/redirectToWebArticle.aspx?siteID=816&url=https://www.home-reform.co.jp/
Hello there! This post couldnít be written much better! Reading through this article reminds me of my previous roommate! He always kept talking about this. I'll forward this article to him. Pretty sure he's going to have a very good read. Many thanks for sharing!
https://ads.homedy.com/ads/click?id=79&url=https://ocrv.vip
https://3db.moy.su/go?https://ocrv.store/
https://www.searchpoint.net/redir.asp?reg_id=pTypes&sname=/search.asp&lid=0&sponsor=INC&url=https://wildwestforkliftschool.com/
You should be a part of a contest for one of the highest quality sites online. I most certainly will recommend this blog!
https://foaf-visualizer.gnu.org.ua/?url=https://franciscogiexp.blogdemls.com
Way cool! Some very valid points! I appreciate you writing this write-up and the rest of the website is also really good.
http://home.speedbit.com/r.aspx?u=https://www.jessemarchant.com/blogs/jbm-blog/posts/moonwatcher-for-out-of-town-films
There's certainly a great deal to learn about this topic. I really like all of the points you have made.
http://jmp.rgr.jp/jmp/rank.cgi?mode=link&id=265802&url=http://nightvisionnetworks.com
I want to to thank you for this good read!! I definitely enjoyed every bit of it. I have got you book-marked to look at new things you postÖ
http://se03.cside.jp/~webooo/zippo/naviz.cgi?jump=194&url=http://kameron2k5a1.estate-blog.com
Great article! We will be linking to this particularly great article on our site. Keep up the good writing.
/
https://cloudsso.hikvision.com/logout?service=https://backboneleaders.com
http://avazak.ir/abzar/postfriends/view.php?url=http://ocrvcenter.com
http://metalmecanica.com/ClicksBS?iddb=96901&cb=Portal&tb=BP&idb=278&ns=StandarBanners&co=StandarBanner&idd=&ide=296655&ud=https://ocrvcenter.com/
Greetings! Very helpful advice in this particular article! It's the little changes that produce the largest changes. Many thanks for sharing!
http://enrolmy.com/fun-zone/track/hTQMqNptpUSTSjBf0UnFkc22hVB_nUKQwBhKWcfAEBDZA6EAkqls7S21zqpUb1UnUCMZeFF2XLhx2rLiqIS4RUcf2VYUMqW2?href=ocrvcenter.com
Iím amazed, I have to admit. Rarely do I encounter a blog thatís equally educative and interesting, and without a doubt, you have hit the nail on the head. The problem is something which too few folks are speaking intelligently about. I am very happy that I stumbled across this during my search for something concerning this.
http://www.hyoito-fda.com/out.php?url=ocrvcenter.com
https://f-academy.jp/mmca?no=352&url=ocrvcenter.com/
cost of generic sildenafil https://pharmaceptica.com/
An outstanding share! I have just forwarded this onto a colleague who has been conducting a little homework on this. And he in fact ordered me lunch due to the fact that I found it for him... lol. So let me reword this.... Thanks for the meal!! But yeah, thanks for spending the time to discuss this subject here on your web page.
http://www.lontrue.com/ADClick.aspx?SiteID=206&ADID=1&URL=http://ocrvcenter.com/
https://www.jpn.com/mpc_customize_seamless.php?url=http://ocrvcenter.com/&kmws=3n8oc797354bpd0jq96pgjgtv4
Iím amazed, I must say. Rarely do I come across a blog thatís equally educative and engaging, and without a doubt, you've hit the nail on the head. The issue is an issue that too few folks are speaking intelligently about. I am very happy I found this in my search for something regarding this.
http://tradeportalofindia.org/countryprofile/redirect.aspx?hidcurmenu=divothers&countrycode=32¤tmenu=indiaandeu&redirecturl=www.ocrvcenter.com
https://www.everesttech.net/1350/cq?ev_sid=10&ev_ltx=&ev_lx=44113318857&ev_crx=8179171971&ev_mt=p&ev_dvc=c&url=ocrvcenter.com/
Hi there, I do believe your web site could possibly be having web browser compatibility issues. When I take a look at your site in Safari, it looks fine but when opening in Internet Explorer, it's got some overlapping issues. I just wanted to provide you with a quick heads up! Aside from that, excellent website!
https://www.nbmain.com/servlet/NetBooking.Reservations.Server.Servlets.Availability.SiteAvailabilityMainR?innkey=mcdaniel&bg=&formname=rdetail&s=BookMark&backpage=http://internetmarketingoregon.com/
http://dialnerd.com/__media__/js/netsoltrademark.php?d=internetmarketingnevada.com
http://toplink.miliweb.net/out-16961.php?web=https://bjsnearme.com
http://homepage.manhattanplace.com/__media__/js/netsoltrademark.php?d=bjsnearme.com
Itís nearly impossible to find experienced people in this particular subject, but you sound like you know what youíre talking about! Thanks
http://bookofmormonmovie.com/__media__/js/netsoltrademark.php?d=www.consciousgrowthmarketing.com/
http://tippi.com/__media__/js/netsoltrademark.php?d=getmoneytraveling.com
I seriously love your site.. Pleasant colors & theme. Did you make this web site yourself? Please reply back as Iím hoping to create my own blog and would love to learn where you got this from or exactly what the theme is called. Many thanks!
https://www.ymg-ssz.jp/cms/modules/wordpress0/wp-ktai.php?view=redir&url=http://ocrvart.com
http://zuya.pxl.su/go?https://ocrvcenter.com
http://www.spectrarenalmanagement.com/__media__/js/netsoltrademark.php?d=backbonehunters.com
Hello there, I believe your web site may be having browser compatibility problems. Whenever I look at your site in Safari, it looks fine however, when opening in IE, it's got some overlapping issues. I simply wanted to provide you with a quick heads up! Other than that, fantastic website!
http://timemapper.okfnlabs.org/view?url=https://www.ocrvcenter.com
Iím impressed, I must say. Rarely do I come across a blog thatís equally educative and entertaining, and let me tell you, you've hit the nail on the head. The issue is something not enough men and women are speaking intelligently about. Now i'm very happy I found this in my hunt for something relating to this.
https://www.1minutementalhealth.org/__media__/js/netsoltrademark.php?d=consciousgrowthmarketing.com
http://mauiboatbrokers.com/__media__/js/netsoltrademark.php?d=ocrv.me
https://forums.womenshealthmatters.ca/gynegals/index.php?app=analytics&module=analytics&controller=link&topic=115902&url=http://backbonehunters.com/
I used to be able to find good information from your blog articles.
http://amatemex.com/__media__/js/netsoltrademark.php?d=ocrv.store
I was able to find good info from your blog articles.
https://www.national-filter-sales.net/__media__/js/netsoltrademark.php?d=consciousgrowthmarketing.com
An intriguing discussion is definitely worth comment. I do think that you need to publish more on this subject matter, it might not be a taboo subject but generally folks don't discuss these topics. To the next! Many thanks!!
https://flaaless.com/__media__/js/netsoltrademark.php?d=consciousgrowthmarketing.com
There is definately a great deal to know about this issue. I like all of the points you have made.
https://plasticcactus.net/__media__/js/netsoltrademark.php?d=consciousgrowthmarketing.com/
This is a topic which is near to my heart... Take care! Where are your contact details though?
https://mp.weixinbridge.com/mp/wapredirect?url=http://consciousgrowthmarketing.com/
Oh my goodness! Incredible article dude! Thank you, However I am encountering difficulties with your RSS. I donít understand the reason why I can't join it. Is there anybody else getting the same RSS problems? Anyone who knows the solution will you kindly respond? Thanx!!
http://50-253-172-206-static.hfc.comcastbusiness.net/phpinfo.php?a%5B%5D=https://backbonehunters.com/
http://91.121.34.165/pub.php?keologin=seriousalliance&pkeourl=https://ocrvcenter.com
http://www.tiol.ru/redirect.php?to=consciousgrowthmarketing.com
https://sjrrtm.opennrm.org/-/map/getData.php?url=http://backbonehunters.com
bookmarked!!, I love your site!
http://www.whitewolf.tv/__media__/js/netsoltrademark.php?d=backbonehunters.com
http://www.fmisrael.com/Error.aspx?url=https://fleetautorepairshop.com
http://www.spinecenters.com/__media__/js/netsoltrademark.php?d=nearme.a2hosted.com/sprinter-van-repair-shop
When I initially left a comment I appear to have clicked the -Notify me when new comments are added- checkbox and now whenever a comment is added I recieve four emails with the exact same comment. Is there a way you can remove me from that service? Kudos!
http://bifocalimplantsurgeons.com/__media__/js/netsoltrademark.php?d=ocrv.art
I couldnít resist commenting. Exceptionally well written!
http://olympicbetting.org/__media__/js/netsoltrademark.php?d=www.ocrvmotorcoaches.com
You're so cool! I do not believe I've read through something like this before. So great to discover another person with some original thoughts on this topic. Really.. many thanks for starting this up. This web site is something that's needed on the web, someone with a bit of originality!
http://bristoltravel.com/__media__/js/netsoltrademark.php?d=fleetservicerepairshop.com
http://mybaylorhealth.com/__media__/js/netsoltrademark.php?d=mastermindofmen.com
http://www.firstrate.us/__media__/js/netsoltrademark.php?d=www.ocrvcenter.net
An outstanding share! I've just forwarded this onto a co-worker who was conducting a little research on this. And he in fact bought me dinner due to the fact that I stumbled upon it for him... lol. So allow me to reword this.... Thanks for the meal!! But yeah, thanx for spending the time to talk about this subject here on your internet site.
https://www.agoo.gr/m/sites/view/www-pi-schools-gr?likeMode=dislike&url=https://www.realchrisburns.com/
http://insidequickbooks.com/__media__/js/netsoltrademark.php?d=boxtruckrepairshop.com
http://www.ignitioncapital.com/__media__/js/netsoltrademark.php?d=masteringthemanwithin.com
http://burbankcityfcu.org/__media__/js/netsoltrademark.php?d=fleetservicesocrv.com
http://www.read2me.com/__media__/js/netsoltrademark.php?d=masteringthemanwithin.com
http://thewildinvestor.com/__media__/js/netsoltrademark.php?d=ocrv.me
http://athletesgonebad.com/__media__/js/netsoltrademark.php?d=ocrv.mobi/
Right here is the perfect site for everyone who hopes to understand this topic.
You realize so much its almost hard to argue with you (not that
I actually would want to…HaHa). You certainly put a brand new spin on a subject that has been discussed
for a long time. Great stuff, just wonderful!
http://www.omamu.com/r/out.cgi?id=kicar&url=https://fleetautorepairshop.com
http://fnb-trustmortgage.net/__media__/js/netsoltrademark.php?d=earme.a2hosted.com
Next time I read a blog, I hope that it doesn't disappoint me as much as this particular one. After all, Yes, it was my choice to read, but I genuinely thought you would have something useful to talk about. All I hear is a bunch of complaining about something that you could fix if you weren't too busy searching for attention.
http://momoantena.com/redirect?url=https://ocrvcenter.biz/
Have you ever heard of second life (sl for short). It is basically a game where you can do anything you want. sl is literally my second life (pun intended lol). If you want to see more you can see these Second Life authors and blogs
http://beyondnewhorizons.com/2011/02/how-do-you-inspire-writers/
Casino video games is initially a men's globe. An ante is a established wager utilized to begin every pot. The participant with the best mixture of playing cards will take the full pot of chips.
http://www.opria.com/__media__/js/netsoltrademark.php?d=pridewv.org
http://wishforthis.com/Shop/Redirect.php?URL=http://ocrv.tv/
http://www.greentreeriskmgt.com/__media__/js/netsoltrademark.php?d=ocrvfleetservices.com
Right here is the perfect website for everyone who really wants to understand this topic. You realize a whole lot its almost tough to argue with you (not that I personally would want toÖHaHa). You certainly put a brand new spin on a topic which has been written about for ages. Wonderful stuff, just excellent!
http://oncofuture.com/__media__/js/netsoltrademark.php?d=bestlocalnearme.com
I needed to thank you for this fantastic read!! I certainly enjoyed every bit of it. I've got you book marked to look at new things you postÖ
https://travity.de/redirect/index.asp?url=http://bestservicenearme.com/
http://microvape.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com
I could not resist commenting. Exceptionally well written!
http://www.golfcoursehome.com/ext_url.html?url=ocrvcenter.com
bookmarked!!, I love your blog!
http://wmpolicyquote.com/__media__/js/netsoltrademark.php?d=reviewnearme.com
Spot on with this write-up, I honestly believe that this amazing site needs far more attention. Iíll probably be returning to read through more, thanks for the info!
http://achillion.us/__media__/js/netsoltrademark.php?d=ocrvcenter.com
Howdy, I do believe your website could possibly be having browser compatibility issues. When I look at your site in Safari, it looks fine however, if opening in Internet Explorer, it has some overlapping issues. I just wanted to give you a quick heads up! Apart from that, great site!
https://rostovmama.ru/redirect?url=https://ocrvcenter.com/
An impressive share! I've just forwarded this onto a colleague who had been doing a little homework on this. And he actually bought me dinner because I discovered it for him... lol. So let me reword this.... Thank YOU for the meal!! But yeah, thanx for spending time to discuss this issue here on your internet site.
http://envirodesic.com/healthyschools/commpost/hstransition.asp?urlrefer=masternearme.com
The very next time I read a blog, I hope that it does not disappoint me just as much as this particular one. I mean, Yes, it was my choice to read, however I really believed you would probably have something interesting to say. All I hear is a bunch of moaning about something that you can fix if you weren't too busy seeking attention.
https://google.iq/url?q=https://postfallshealth.com
http://www.response-o-matic.com/thank_you.php?u=https://apextaxresolution.com/
https://map.google.co.ke/url?q=https://rankemailads.com
http://cssdrive.com/?URL=https://www.apextaxresolution.com/
https://www.google.cg/url?q=https://allamericanstatewidesecurity.com
Having read this I believed it was really informative. I appreciate you spending some time and effort to put this content together. I once again find myself spending way too much time both reading and posting comments. But so what, it was still worth it!
http://studivz.net/Link/Dereferer/?https://customcampervans.com/
Now, I'm a complete newbie (and dummie), so please help – I like a few features from Dynamic Drive, but how EXACTLY to insert them? Where do I go after I login into my Control Panel on Joomla?. I know how to copy-paste, but details? Please? I'm just afraid to delete something necessary and break the whole thing down, as I have never done that before. Any help greatly appreciated, or just give me a link where this is properly explained in Simple English, thanks!.
https://www.facebook.com/KateKowalskyWebMarketing
There's definately a lot to learn about this issue. I like all the points you made.
https://www.kvb.bidwinenjoy.com/__media__/js/netsoltrademark.php?d=affordableranking.com/
Aw, this was a very nice post. Finding the time and actual effort to make a great articleÖ but what can I sayÖ I procrastinate a whole lot and never manage to get nearly anything done.
http://www.tt-line.com/__media__/js/netsoltrademark.php?d=affordableranking.com
An outstanding share! I have just forwarded this onto a friend who was conducting a little homework on this. And he actually ordered me dinner because I discovered it for him... lol. So let me reword this.... Thanks for the meal!! But yeah, thanks for spending time to discuss this issue here on your website.
http://www.bigphatbutts.com/cgi-bin/sites/out.cgi?id=biggirl&url=https://affordableranking.com/
Pretty! This has been an incredibly wonderful article. Thanks for providing this information.
http://jp.local.com/__media__/js/netsoltrademark.php?d=http://ocrvluxurycoaches.com/western-star-collision-repair-shop-near-me
Howdy, I think your website may be having web browser compatibility problems. When I look at your site in Safari, it looks fine but when opening in IE, it has some overlapping issues. I merely wanted to provide you with a quick heads up! Apart from that, fantastic blog!
http://www.webourgeon.com/__media__/js/netsoltrademark.php?d=https://www.ocrvcenter.com/rv-repair-shop-canyon-country-california/
http://milmil.cc/sys/milmil.cgi?id=plan1010&mode=damy&moveurl=http://ocrvcenter.com/manufacturing-truck-collision-repair-shop-near-me
https://www.investordictionary.com/dictionary/links/relatedlinkheader.aspx?url=http://bugcrowd.com/
http://www.slack-redir.net/link?url=http://www.ocrvcenter.com/motorhome-frame-repair-near-me
Howdy! This article couldnít be written any better! Going through this article reminds me of my previous roommate! He always kept talking about this. I will send this post to him. Pretty sure he'll have a good read. Thank you for sharing!
https://www.codersclub.org/uchome/link.php?url=https://www.quotenearme.com
http://southampton.ac.uk/~drn1e09/foaf/visualizer.php?url=http://www.ocrvcenter.com/rv-upgrades-near-me-2
http://promo.pertinger.com/?URL=https://www.ocrvcenter.com/rv-cabinet-repair-near-me
http://www.elephone.hk/static/redirect?url=www.ocrvcenter.com/rv-repair-shop-malibu-california
http://mydoterra.com/Application/index.cfm?EnrollerID=458046&Theme=DefaultTheme&Returnurl=www.ocrv.club/national-interstate-rv-collision-repair-shop-near-me/&LNG=en_dot&iact=1
You should be a part of a contest for one of the most useful websites online. I'm going to recommend this site!
http://developer.vantiv.com/external-link.jspa?url=https://ocrvcenter.com/rv-repair-shop-temecula-california/
http://www.evalutrack.com/__media__/js/netsoltrademark.php?d=masternearme.com
http://www.ww17.intstagram.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com/rv-repair-shop-wildomar-california/
You are so cool! I do not suppose I've read anything like this before. So good to discover someone with a few original thoughts on this subject. Seriously.. many thanks for starting this up. This website is one thing that is needed on the internet, someone with a bit of originality!
https://sv.paltalk.com/client/webapp/client/External.wmt?url=https://www.ocrvcenter.co/rv-repair-shop-los-alamitos-california
Right here is the perfect site for everyone who wants to understand this topic. You realize so much its almost tough to argue with you (not that I actually will need toÖHaHa). You definitely put a fresh spin on a subject which has been written about for decades. Wonderful stuff, just great!
https://www.migrantcinema.net.gridhosted.co.uk/?URL=http://ocrvexperts.com/motorhome-awning-repair-near-me/
This is a topic which is close to my heart... Cheers! Where are your contact details though?
http://citidex.sfgov.org/cgi-bin/sunindex/getData.cgi?docColor=deptsonly&dispRec=yes&contact=TedYamasaki&phone=(415)557-4815&url=http://www.ocrvshop.com/toy-hauler-trailer-collision-repair-shop-near-me
Iím amazed, I have to admit. Rarely do I encounter a blog thatís equally educative and amusing, and let me tell you, you have hit the nail on the head. The issue is an issue that not enough people are speaking intelligently about. I'm very happy that I stumbled across this during my hunt for something concerning this.
http://www.stanko.tw1.ru/redirect.php?url=https://www.ocrvcenter.com/motorhome-blinds-repair-near-me/