29-A.When a government servant is allowed free transit by air in a Government machine or in a machine chartered by Government for the purpose, he is entitled to the following allowance for incidental expenses in addition to the normal daily allowance:
(a) When such journey is between places connected by scheduled air service an amount equal to one-fifth of the standard air fare limited to a maximum of Rs. 20 for each journey.
(b) When such journey is between places which are not connected by scheduled air service, at the rate of 3.5 paise per kilometre subject to a maximum of Rs. 20 for each journey:
Provided that if at other end of the journey by air the government servant has to perform a connected journey by rail or road, he may draw the travelling allowance admissible for such journeys under rule 27.