hat
Depi 2010 F-22 a ki te gwo malè tonbe sou pa pwoblèm ki pako rezoud ki gen yon sistèm oksijèn pilòt li yo ki te kontribye nan yon sèl aksidan ak lanmò nan yon pilòt la. Nan 2011 te flòt la chita pou kat mwa anvan reprenan operasyon vòl, men rapò nan sistèm oksijèn pwoblèm yo te kontinye. An jiyè 2012, fòs aeryen an te anonse ke sentòm yo ipoksi ki tankou ki gen eksperyans te ki te koze pa yon tiyo defo nan vès presyon pilòt yo '; te valv la ranplase ak chanjman nan sistèm nan filtraj yo te tou fè fè yo. (Wikipedia)
eng
Since 2010 the F-22 has been plagued by unresolved problems with its pilot oxygen systems which contributed to one crash and death of a pilot. In 2011 the fleet was grounded for four months before resuming flight operations, but reports of oxygen systems issues have continued. In July 2012, the Air Force announced that the hypoxia-like symptoms experienced were caused by a faulty valve in the pilots' pressure vest; the valve was replaced and changes to the filtration system were also made. (Wikipedia)