From Flight Global's DEW Line blog

 

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F-22 manufacturer Lockheed Martin confirms the company has sent five engineers to Joint Base Elmendorf-Richardson, Alaska, to help investigate the source of the fleet-wide F-22 safety stand-down ...

From Defense Aerospace

 

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Is the F-22 Too Difficult to Use? Big Questions Surround Raptor's Grounding

(Source: Project On Government Oversight; issued July 12, 2011)

 

Many pixels have been spilled on the recent grounding of the F-22 Raptor fleet, problems with the plane's oxygen systems, and the possible role of the oxygen system in the November 2010 crash of an F-22 in Alaska and death of its pilot. Here's a quick roundup of coverage of the latest problems facing this very expensive plane, followed by some questions that I think need to be answered.

 

CV32: I don't think the F-22 issues are catching much press at all. Worth noting that deliveries have been suspended as well.

From DefenseNews

 

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Sources: USAF Suspects Carbon Monoxide in F-22 Grounding

By DAVE MAJUMDAR

Published: 21 Jul 2011 14:19

 

The prolonged grounding of the U.S. Air Force's F-22 Raptor fleet may be due to carbon monoxide entering the cockpit via the aircraft's oxygen system, two sources said.

From Flight Global

 

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DATE: 26/07/11

SOURCE: Flight International

 

USAF continues probe into F-22 grounding

By Dominic Perry

 

USAF tests have been unable to replicate the hypoxia-like conditions experienced by some pilots of the Lockheed Martin F-22 Raptor.

From Defense Aerospace

 

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F-22 Grounding: Propane, Anti-Freeze, and Other Toxins Found in Pilots' Blood

(Source: Project on Government Oversight; issued July 27, 2011)

 

First it was oxygen problems. Then there was treatment for "physiological symptoms." And now the news is that toxins are keeping the F-22s down.

From DefenseNews

 

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Bleed-Air Problem Caused F-22 Crash: Sources

By DAVE MAJUMDAR

Published: 8 Sep 2011 16:47

 

The November 2010 crash of a U.S. Air Force F-22 Raptor was caused by a malfunction with the aircraft engine's bleed air system, an industry source said. The pilot, Capt. Jeff "Bong" Haney of the 525th Fighter Squadron, was killed in the accident.

From DefenseNews

 

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USAF Grounds F-22s at Va. Base

By DAVE MAJUMDAR

Published: 21 Oct 2011 18:28

 

U.S. Air Force F-22 Raptors at the 1st Fighter Wing, Joint Base Langley-Eustis, Va., have once again been grounded, service officials confirmed Oct. 21.