Book it 1st class. I have found that referencing it as "same duty D/H" in the remarks of the expense report, precludes any issue from the auditors.
The 2hr and 4 hr limitations you are referring to only apply to the requirements on the company, when scheduling D/H's. You are not subject to those when deviating. But, as you know...You are still limited on class of service requirements. And, you would be eligible for 1st, in your scenario.
Last edited by Busboy; 08-10-2012 at 07:22 PM.