Originally Posted by Jordan D

So, I believe this should be a fairly open and shut case for compensation - although unsure if it is at the EC261 level of EUR400 or EUR600:
- BA199 (LHR-BOM) last Friday (07 Sep) was boarded, prepared for departure when an issue was found with the air conditioning
- The Captain requested parts from stores, however the wrong part was delivered, and when eventually the right part was found, it would fit/work
- Departure time drifted from 2125, with updates eventually leading to 2350
- At 2359 one of the pilots announced that departure would now be delayed to 1600hrs on Saturday (it departed 1650hrs)
- BA began to discharge its duty of care duties by serving the meal at this point, whilst accommodation was readied (it was duly provided)
- The delayed BA199 arrived BOM over 20hrs behind schedule
- My father requested to see if there was anything that could be done to get him there more quickly due to it being a time sensitive trip: the BA139 on Saturday morning (like all this week) is cancelled due to the 787 issues
- BA reticketed him (and protected his return) on the Saturday morning Jet Airways LHR-BOM flight, which arrived 12hrs+ on his original flight arrival time

I assume this falls under the delay regulation (EUR400) rather than cancellation (EUR600) but seek advice accordingly.

Must be said that BA did comply with all their relevant duties regarding food, accommodation (up until my father left for his alternate flight).