According to this story, senior UMNO leaders are going on a road-show to gather feedback from members on 10th and 14th April covering Kedah, Penang, Perak, Selangor and the FT.
I assume the government executive jet will not be used for political party purposes and since these days are not public holidays, the appropriate leave applications for time out will be made.
Since this is a personal undertaking, the only official benefit that can be used is the body-guard; with some restrictions on the expenses claimed. For example, if 2 bodyguards have to go on the trip, they should only be allowed economy class fares on a commercial plane.
Maybe that jet will be made available to other ministers with urgent government business to attend; so why not go and inquire?
Or am I being too naive to even dream of such things happening among our leaders?