Alongside the Chequerboard approach, there was a lesser known approach into Kai Tak that led aircraft over the Stonecutters' DME at a heading of 040 and led into a ~90° turn to line up on Runway 13. This approach was used extremely infrequently, since the Chequerboard approach had a localiser and glide slope to work off of, and DMEs are very rarely used in commercial aviation today. It generally can be assumed this approach was used when the localiser and glide slope were offline for maintenance.