Some Learjet 40 and Learjet 45 aircraft operators have been experiencing various ongoing intermittent bleed air issues. While some are false indications, many are actual leaks.
If your inspection calendar includes a large inspection that requires the interior being removed, I recommend incorporating the Low Temperature Ground Wing Anti-Ice System.
When recording the MPD entry in the airframe logbook, make sure it is clear which maintenance program is the appropriate program. Vague entries, while not wrong, lack any real details and can potentially lead to having your aircraft inspected against the wrong program.