Originally Posted by
Twin Wasp
If ELP is just a tech stop, you press on under flag rules. If there is any change to the payload, anything or one on or off there, it becomes a domestic leg ELP-SEA.
Would you mind pointing out the reference you used regarding the tech stop?
Also, you can't just arbitrarily swap from supplemental to flag as you like, unless you have been required to under 119.21(3). Not all certificate holders have this allowance or restriction.