Commercial Fixed Wing
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Confusion; Human-Machine Interface; Situational Awareness
Deviation - Altitude Overshoot; Deviation - Altitude Crossing Restriction Not Met; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Air Traffic Control Issued Advisory / Alert; Flight Crew Became Reoriented
Procedure; Software and Automation; Chart Or Publication; Airspace Structure
3;000 feet cleared approach ILS 24R. Set FAF/GS (glideslope) altitude and initiated descent.  Approaching level and prior to GS capture; ATC called and asked us to confirm altitude and altimeter and on GS.  Responded with information and leveling at GS intercept altitude; below GS. Rest of approach landing uneventful. Spoke to Approach Control Supervisor following event. He wanted to explain that specifically for that approach in VMC there is a VFR corridor below the approach course; and that while today wasn't a big deal due to IMC conditions; it could create a safety conflict. The OMEKI approach fix does not appear in the MCDU (Multi Function Control Display Unit) with ILS 24R selected. Consider including OMEKI as part of database for ILS24R.
We're given 3;000 feet until established; then descended to platform altitude to intercept glideslope. Missed an altitude between FAF and IAF of 2;500 ft. but the FMS doesn't have the fix in between in data base.  ATC then called to verify our altitude thinking we're descending on the glideslope For Runway 24R in CYUL when we were just descending to platform altitude. If the database had the altitude restrictions for OMEKI like it does on the approach plate then issue maybe have been resolved. Everything else outside the approach was uneventful. But I believe it's something that should be brought up for safety Concerns. The OMEKI is used for VFR corridor; but it was IFR day. Consider putting OMEKI for data base in for ILS 24R.
An Air Carrier flight crew conducting a Visual Approach into Montreal (YUL) reported they descended below flight path and received a low altitude alert from ATC. The fix OMEKI which has an appropriate crossing altitude is not displayed from the database on their FMC.