Anyone know why 869 is so notoriously delayed by MX? The number of delayed departures just keeps growing. I just don't get this.

170+ (26Dec) - due to 5+ hour inbound MX
71 (25Dec)
32 (24Dec)
26 (23Dec)
92 min (22Dec)
-- (21Dec)
74 min (20)
73 min (19)
450 min (18)
-- (17)
-- (16)
48 (15)
49 (14)
-- (13)
91 (12)
64 (11)
126 (10) due to KIX divert
37 (9)
78 (8Dec16)