Large Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Confusion; Situational Awareness
Aircraft Equipment Problem Less Severe
General None Reported / Taken
Aircraft; Airport; Company Policy; Procedure
While on the approach to Guatemala ILS Z runway 02 ILS out of service. We used the non ILS procedures. The VTI was centered; LNAV/VNAV. Five different first officers and five different aircraft with the same results. At about 200 feet the HUD commands a further descent into the valley; at that point the PAPI appears to indicate normal.
Air carrier Captain reported on unusual indications on the ILS Z at MGGT.