Honeywell Bendix/King KMD 550 Pilot's Manual Addendum page 103

Understanding Weather Reports
18. Sky Conditions Becoming: SKC
See #8 in the UNDERSTANDING METARs section for details. This
element may be omitted if no change is expected.
19. Change in Conditions: TEMPO 2022
TEMPO indicates "temporary" changes expected as described
between 2000Z (20)and 2200Z (22). "Temporary" indicates a tem-
porary fluctuation in conditions, usually lasting less than one hour.
The described conditions follow this element.
20. Low Level Windshear: WS015/30045KT
WS indicates "windshear" not associated with convective activity.
015 indicates the windshear is expected at 1500 feet. AGL Wind is
expected from 300° (300) at 45 knots (45KT).
21. Change in Conditions: PROB40 0407
PROB40 indicates a 40% "probability" of described conditions
occurring between 0400Z (04)and 0700Z (07). The described con-
ditions follow this element.
UNDERSTANDING PIREPS
1 2
KCRW UA/OV KBKW 360015-KCRW/TM 1815/FL120/TP BE99/SK IMC/
WX RA/TA M08/WV 290030/TB LGT-MDT/IC LGT RIME/RM MDT MXD
ICG DURGC KROA NWBND FL080-100 1750Z
The following is an example of a typical PIREP with an explanation of
the elements.
1. Station Identifier: KCRW
This is the station identifier of the nearest weather reporting location
to the reported conditions.
2. Report Type: UA
Reports will be routine (UA) or urgent (UUA).
3. Location: OV KBKW 360015-KCRW
OV indicates the report is in relation to a VOR. KBKW is the VOR
identifier, in this case Beckley VOR. 360015-KCRW indicates posi-
tion as related to the VOR. In this case, 15 miles out on the 360
degree radial. KCRW indicates this is a leg to the Charleston, West
Virginia VOR.
Revision 6 Feb/2009
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A-6
KMD 550/850 FIS Addendum
Appendix A