1. Encashment of leave is linked with availment of LTC, but at the same
time, there is no necessity that the leave encashment period and LTC period should exactly match with starting and ending days of journey.
2. In case you are unable to perform, you will naturally inform the office that you could not undertake the journey, by which time, the LTC encashment will also become null and void. By the time you perform any time subsequently the LTC, you can avail provided you have not drawn the encashment amount or even if you had drawn if you surrender back on cancellation of your earlier programme.
3. Those who are receiving GP Rs.5,400 or Rs.6600 are entitled for Air Travel for Official Tour and the same entitlement applies for LTC also.
The O.Ms dated 23.9.2008 of DoPT as well as Dept. of Expenditure Min. of Finance in r/o LTC and TA respectively may be referred in this regard.
Sl. No.1 and 2 above are my personal views. You may also please
cross check it up.