lb ▁small ▁female ▁air cre w ▁gets ▁a ▁similar ▁acceleration ▁to ▁the ▁ 2 4 5   lb ▁male ▁pilot . ▁ ▁The ▁seat ▁has ▁been ▁updated ▁over ▁the ▁years ▁through ▁pre - pl anned ▁product ▁improvement ▁programs ▁to ▁include ▁digital ▁sequ encing , ▁additional ▁redund ancy , ▁enh ance ▁stability , ▁lim b ▁rest raint s , ▁struct ural ▁upgrad ing , ▁and ▁pass ive ▁head / ne ck ▁rest raint s . ▁ ▁The ▁AC ES ▁II ▁seat ▁e jection ▁injury ▁rate ▁is ▁one ▁of ▁the ▁lowest ▁in ▁the ▁world ▁as ▁proven ▁in ▁over ▁ 6 0 0 ▁live ▁e jections . ▁ ▁Back ▁injury ▁rates ▁occur ▁in ▁only ▁ 1 % ▁of ▁AC ES ▁e jections ▁compared ▁to ▁ 2 0 % ▁to ▁ 4 0 % ▁in ▁most ▁other ▁e jection ▁seats . ▁ ▁The ▁A - 1 0 , ▁F - 1 5 , ▁F - 1 1 7 , ▁B - 1 , ▁and ▁B - 2 ▁use ▁connected ▁firing ▁handles ▁that ▁activ ate ▁both ▁the ▁can opy ▁j ett ison ▁systems , ▁and ▁the ▁seat ▁e jection . ▁Both ▁handles ▁accomplish ▁the ▁same ▁task , ▁so ▁pulling ▁either ▁one ▁suff ices . ▁The ▁F - 2 2 , ▁W B - 5 7 , ▁and ▁F - 1 6 ▁have ▁only ▁one ▁handle ▁located ▁between ▁the ▁pilot ' s ▁legs , ▁due ▁to ▁co ck pit ▁space ▁limitations . ▁ ▁The ▁minimal ▁e jection ▁alt itude ▁for ▁AC ES ▁II ▁seat ▁in ▁invert ed ▁flight ▁is