Pentagon Tester Says Toxins Suspected in F-22 Hypoxia Issues
January 16, 2012 2:34 PM
comment(s) - last by
More hypoxia incidents have occurred since the F-22 returned to the skies
The USAF's premiere air superiority fighter, the F-22 Raptor, had a rough year in 2011. There were several incidences of pilots exhibiting hypoxia-like symptoms that led to the aircraft being placed on stand-down for months while an investigation took place into the possible causes of the issue.
Fingers were pointed at the onboard oxygen generation systems and the OBOGS failure was thought to have contributed to the fatal crash of a Raptor pilot in 2010. That fatal crash was instead ruled
On January 13, a report from the Pentagon's top tester was published on the grounding of the F-22 Raptors last year. According to the report, the Raptor stand-down last year was due to "suspected contamination problems with the aircraft environmental control system and associated onboard oxygen generation system from later April through late September 2011."
The report was penned by chief operational tester J. Michael Gilmore and confirms that toxins entering the cockpit of the F-22 had cause over twelve incidents that were similar to hypoxia. The USAF
lifted the grounding
before a hard answer to the cause of the problems was found. Since the grounding was lifted, the Raptors in the fleet have flown over 6,000 times.
reports that more incidents of the hypoxia-like symptoms have occurred despite the precautions put into effect to install charcoal filters and have pilots wear pulse oximeters.
[Source: Lockheed Martin]
Air Force spokeswoman Jennifer Ferrau said, "There have been approximately 90 events of interest and 15 are being investigated for potential physiological incidents -- 8 involving pilots and 7 involving aircraft maintenance personnel. This translates to a 1.8 percent event rate since the return to flight in September."
In USAF parlance an "event of interest" is an indication of a malfunction in a system or a data point that has not caused hypoxia-like symptoms. A "physiological event" is one that has produced hypoxia symptoms.
Ferrau said, "Any event involving hypoxia-like symptoms may be categorized by Air Force Instructions as a physiological incident following an investigation."
This article is over a month old, voting and posting comments is disabled
1/16/2012 2:38:21 PM
Testing possible weak points? Hmmm?
"People Don't Respect Confidentiality in This Industry" -- Sony Computer Entertainment of America President and CEO Jack Tretton
Despite OBOGS Failure, Pilot Error Blamed in Fatal F-22 Raptor Crash
December 16, 2011, 7:36 AM
USAF F-22 Raptor to Return to the Skies, USAF Committed F-35 Lightning II Program
September 20, 2011, 12:46 PM
Crowdfunded Sex Toy Lets You Control the Action From Your Wii Nunchuk
January 15, 2015, 3:42 PM
Elon Musk Plays Warcraft; But Still Finds Time to Sleep, Build a Mars Colony Ship
January 6, 2015, 9:54 PM
SpaceX Scrubs Falcon 9 Launch to ISS, Barge Landing Test, Friday Redo Targeted
January 6, 2015, 4:02 PM
Quick Note; Wreckage of Malaysian-Owned Passenger Jet Found
December 30, 2014, 12:42 PM
Quick Note: Drone Loses Fight to the Death With Kangaroo
December 23, 2014, 3:28 PM
Campbell's Monkeys Found to Use Different Dialects to Describe Local Threats
December 22, 2014, 3:52 PM
Most Popular Articles
Microsoft Shows Off Latest Windows 10 Build, Preps it for Next Week Release
January 21, 2015, 2:57 PM
Under the Hood: How DirectX 11.3 and 12 Will Supercharge Windows 10 Gaming
January 23, 2015, 12:34 PM
IDC: 2014 Sales Show PC Isn't Dead, But Desktop May be Dying
January 19, 2015, 1:50 PM
Police are Using New Handheld Radar Sensors to Peer Into Houses w/out Warrant
January 20, 2015, 1:35 PM
Report: HTC One M9 (2015) is Tied to Under Armour-Powered HTC Smartwatch
January 19, 2015, 11:10 AM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information