Yesterday afternoon at around 2 PM, NABI 5386, heading towards Olney Terminal on the 55, caught on fire. Fortunately, none of the 26 riders on board the bus were injured; everyone was able to make it off the bus safely.
The bus was towed back to Midvale, but while the fire system worked correctly, it is in bad shape. Since it’s due to be replaced in a year or so, it would likely be cannibalized for parts and scrapped.
More details here: http://articles.philly.com/2011-09-13/news/30149814_1_septa-bus-engine-fires-passengers