L-3 TECHNOLOGIES ESI-500 - Figure 3-22: Reduced RTC Alert Condition; Reduced Required Terrain Clearance (RTC); Table 3-1: Required Terrain Clearances for the Reduced RTC Alert Condition

ESI-500
Pilot’s Guide 3-25
Display Features
Figure 3-22: Reduced RTC Alert Condition
Reduced Required Terrain Clearance (RTC)
The reduced RTC alert condition occurs when your aircraft is currently
above the altitude of the upcoming terrain along the projected ight
path, but the projected terrain clearance is less than the required
terrain clearance for the phase of ight (Figure 3-22 and Table 3-1).
The ESI-500 issues a caution alert 60 seconds before the offending
terrain and a warning alert 30 seconds before the offending terrain.
See Table 3-1 for other phase options for phase of ight clearance
limits.
Table 3-1: Required Terrain Clearances for the
Reduced RTC Alert Condition