This online glossary provides a comprehensive list of all major aviation abbreviations.
UB |
utility bus |
UHF |
ultra high frequency |
ULB |
underwater locator beacon |
ULD |
unit load device |
UTC |
coordinated universal time |
V1 |
decision speed (committed to take-off) |
V2 |
take-off safety speed |
VA |
maneuvering speed |
VREF |
reference landing speed |
VR |
rotation speed (lift nose for take-off) |
VAU |
voltage averaging unit |
VBV |
variable bypass valve |
VEP |
video entertainment player |
VFR |
visual flight rules |
VHF |
very high frequency |
VIGV |
variable integrated guide vane |
VIU |
video interface unit |
VLV |
valve |
VNAV |
vertical navigation |
VOR |
VHF omni-directional radio range |
VOR/MB |
VOR marker beacon |
VOS |
velocity of sound |
V/S |
vertical speed |
VSCF |
variable speed constant frequency |
VSI |
vertical speed indicator |
VSV |
variable stator vane |
VTO |
volumetric top-off |
WAI |
wing anti-ice |
WES |
warning electronic system |
WEU |
warning electronic unit |
WHCU |
window heat control unit |
WOW |
weight-on-wheels |
WPT |
waypoint |
WTAI |
wing thermal anti-icing |
WXR |
weather radar |
xdcr |
transducer |
xfr |
tansfer |
xmt |
transmit |
xmtr |
transmitter |
ZFW |
zero-fuel weight |
ZMU |
zone management unit |
ZNC |
zone network controller |
ZNTU |
ZNU telephone distribution unit |
ZPC |
zone power converter |