757/767 weather radar/EGPWS Display

[PEI_3721]

For a description of EGPWS indications and modes see EGPWS pilots guide; note the new website address and additional information.
You will have to establish which version of EGPWS the aircraft is fitted with - 757/767 probably MkVI or VIII, but I haven’t flown those aircraft.

Take note of information given in recent papers at the FSF’s European Safety Seminar, which indicated that pilots operating knowledge of modern technology was very poor. One research paper looked specifically at weather Radar, another at the increasing number of ‘real’ EGPWS warning. Some crews did not understand how radar tilt worked, others did not know how EGPWS works, its limitations, or more importantly its capabilities.
EGPWS colour coding should not be compared with weather radar, they use different concepts.

EGPWS is very, very much more reliable than the old GPWS and does not suffer ‘nuisance’ warnings. Some aircraft might have problems due to ‘map shift’ from navigation sensor input (DME/FMS), but this can be eliminated by choosing the EGPWS varient with a GPS receiver embedded in the EGPWS computer.
The EGPWS ‘saves’ paper also strongly recommends activation of the Obstacle mode. A near miss incident was described where an aircraft almost hit a high rise building. The obstacle mode software is already in every EGPWS box and the upgrade and database is free from Honeywell. The aircraft may require a small wiring change.