A 4 hr delay, at the biggest base, which normally has full airport standby cover? Surely shows a shortage of some sort?.
The LS921/2 was scheduled to be operated by -ISY, leased from Privilege but instead was operated by -LSAH, due to the aircraft going tech, like Flying Wild said. Hardly surprising given -ISY's recent form - only came back into service on Sunday after going tech,
again...