the ambiguity here is that the TSO-127 which refers to the AS8049 specifies that for the side load case 4g already includes the 1.33, so no need to go higher than 4g.
The is also specified by EASA in CS 25.785. So it`s still not clear if it should be 3g x 1.33 (=4g) OR 4g x 1.33?
yeah typical fitting factor is 1.15. In this case, per 25.785 (f)(3) 1.33 applies.
It's just not clear if the particular 4g side load case already includes this factor or it needs to be added on top. Typical 25.561 side load is 3g. Hence, for seats, using 4g = 3g x 1.33.
Thanks,
Andres
Hi all,
We're having an internal debate about seat static test load factors.
Does anyone knows if the 1.33 fitting factor applies to the 4g side load case or is it already included in 4g (3g x 1.33)? This is to substantiate the seat attachment to the aircraft.
Thanks,
Andres
References...
