Noun
GPWS
(aviation) Initialism of ground proximity warning system.
One of the major weaknesses of GPWS is the lack of "look-ahead" information, because it only provides altitude above terrain "look-down". Source: Internet
To help avoid controlled flight into terrain ( CFIT ), aircraft use systems such as ground-proximity warning systems (GPWS), which use radar altimeters as a key element. Source: Internet
The first Jeepneys were military-surplus MBs and GPWs, left behind in the war-ravaged country following World War II and Filipino independence. Source: Internet