Gulfstream IV / G350 / G450
Maintenance Airframe; Maintenance Powerplant; Other Maintenance Controller
Communication Breakdown
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural MEL / CDL; Deviation / Discrepancy - Procedural FAR
General Maintenance Action
Aircraft; Procedure; MEL
On DATE; Time; the Internal Baggage Door was placed on MEL by a different Controller. In the morning of DATE1 I unassigned this MEL; techs could not complete this MEL and Ops needed aircraft for a flight the next day. I didn't review the MEL 52-11 and assumed it was a good MEL and removed it from the work order to be troubleshot at a later date. The aircraft flew during the day of DATE 1 and landed in ZZZ to be worked for maintenance. Tonight; on DATE 1 this MEL was back in a work order to be worked again; I was researching parts and reviewing the MEL when I noticed that 52-11 excludes the internal baggage door and that there is no relief. I immediately notified the Duty Manager NAME and grounded the aircraft. MEL 52-11 Internal baggage door does not close properly. It slides open occasionally.Review MEL's in Work Orders before unassigned them.
Maintenance Controller reported a misapplied MEL allowed a Gulfstream IV aircraft to fly with a baggage door malfunction for which there was no relief in the MEL.