263 is a maa-blr-mle service on the old all economy 320's. considering they are more than 20 years old, they are doing a damn good job flying but occasionally they do go tech. and their occurence is slightly more than the airline average.

having said that 265 doesnt seem to be operating today or tomorrow. is it not a daily service?

there is no aircraft change on 263 and expect it to get you in within after 30 min of your arrival time as ground handling of air india in south is a little slow compared to delhi and bombay. however, if you do go tech, well then thats a complete different chapter.