ThePointblank
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Posts: 2697
Joined: Sat Jan 17, 2009 11:39 pm

USN Grounds T-45 Goshawk Fleet

Thu Apr 06, 2017 3:17 am

https://www.stripes.com/news/navy-groun ... t-1.462127

https://www.foxnews.com/politics/2017/0 ... ected.html

Basically, oxygen problems with the T-45 Goshawk (sounds much like the issues with with the F/A-18 as well), has lead to a situation where instructor pilots have refused to fly the T-45, leading to a cancellation of 40% of sorties. There has been a number of hypoxia related incidents reported with the T-45, including one last week where a student pilot had to be pulled out of his aircraft unconscious after being affected. This has resulted in the USN suspending flight operations with the T-45 temporarily to try to find a solution.
 
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Dutchy
Posts: 1680
Joined: Sat Nov 03, 2007 1:25 am

Re: USN Grounds T-45 Goshawk Fleet

Thu Apr 06, 2017 6:17 am

That is harsh. How come that this is a problem nowadays, I mean the Goshawk has been flying for ages and so is the F/A-18. Less time for maintenance? Or some procedures were cut?
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LMP737
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Joined: Wed May 08, 2002 4:06 pm

Re: USN Grounds T-45 Goshawk Fleet

Mon Apr 24, 2017 7:05 pm

The F-14D had OBOGS but it also had a backup LOX system as well. I'm guessing the Goshawk does not.
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angad84
Posts: 1891
Joined: Mon Nov 05, 2012 3:04 pm

Re: USN Grounds T-45 Goshawk Fleet

Mon Apr 24, 2017 8:22 pm

Almost all OBOGS-equipped aircraft have backup LOX, and the T-45 is no exception.

Cheers
A
 
Ozair
Posts: 1516
Joined: Mon Jan 31, 2005 8:38 am

Re: USN Grounds T-45 Goshawk Fleet

Mon Apr 24, 2017 11:40 pm

angad84 wrote:
Almost all OBOGS-equipped aircraft have backup LOX, and the T-45 is no exception.

Cheers
A

Yes. The trick is recognising the symptoms of hypoxia and activiating the backup LOX. In the Hornet the backup LOX is held at the base of the seat and activiated by pulling a tab. IIRC it lasts about 10 minutes, enough time to drop altitude to breathable ranges.
 
ThePointblank
Topic Author
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Re: USN Grounds T-45 Goshawk Fleet

Sun May 07, 2017 3:29 am

Continued problems with hypoxia being reported within the USN, affecting pilots on deployment and on combat missions:
http://www.military.com/daily-news/2017 ... -isis.html

The USS George H. W. Bush and the USS Carl Vinson both deployed in January specially equipped with hyperbaric chambers, devices that measure cockpit air pressure, and even issued commerically-bought Garmin wristwatches to air crew that have altimeters and barometric sensors built into them. Even then, it has been reported that there has been at least two instances onboard the Bush where the hyperbaric chambers were used by aircrew having hypoxia symptoms; once in Feb where a Growler crew had an abnormality with the aircraft's environmental control system and managed a landing back onboard, and the second instance happened in April when a solo F/A-18 pilot became disoriented shortly after takeoff. Both instances fortunately occurred close to the carrier, allowing pilots to quickly conduct a landing and seek immediate treatment.

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