The aircraft type quite possibly isn't really relevant ...as others have said if you are at what is an outstation for the company, where you may not have spare crew/aircraft readily available, things can fall over very easily and a long delay can result, especially if it's an Long Haul/Ultra Long Haul sector and the delay only becomes apparent after the crew have reported and the duty clock is running.
I can remember two 72 'ish hour delays for crew and airframe in my time on the 744 due to an engine related issues at outstations (same basic engineering problem both cases), fortunately in both cases it was possible to disperse the passengers in 24 hours or so.