Flight Crew Air Transport Pilot (ATP)
Human-Machine Interface
ATC Issue All Types; Deviation / Discrepancy - Procedural Other / Unknown
General None Reported / Taken
Aircraft; Airport; Procedure
Called MROC Tower for weather and landing runway which was 07. Briefed arrival and ILS 07. 30 NM from airport ATC cleared us direct TOMAS which reduced the distance from MROC by 10 NM. Descend to 8;000 and cleared for VOR/DME 07 circle 25 CYRUS visual APP RWY 25. When building VOR/DME 07 you then must build the CYRUS visual because it is not in the database. Then when you select RWY 25 it dumps the VOR approach that you have loaded. This occurred while descending in mountainous terrain IMC. If you then do not load RWY 25 after the final fix on the visual; EPABE; you will not have any vertical guidance. After EPABE you are at 4;000 feet; 1;000 AGL flying into rising terrain. 2.7 NM from the end of 25 the terrain is 3;500 feet. You must descend after EPABE; into rising terrain; while in a 30 degree bank; while making a 180 degree turn. We had several sink rate alerts but were stable at 500 feet and landed without incident.
B737 Captain reports being cleared for the VOR/DME 07 circle 25 CYRUS visual APP RWY 25 at MROC. The CYRUS visual is not part of the database and must be manually entered. When Runway 25 is selected the VOR approach is dumped.