AppendixAppendix
Appendix 4
| Template for wind shear warnings Key: M = inclusion mandatory; C = inclusion conditional, whenever applicable. Note 1: The ranges and resolutions for the numerical elements included in wind shear warnings are shown in Appendix 8. Note 2: The explanations for the abbreviations can be found in ICAO Doc 8400 Procedures for Air Navigation Services — ICAO Abbreviations and Codes (PANS-ABC). Note 3: Row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the wind shear warning. |
|---|
| Ref. | Element | Detailed content | Template(s) |
|---|---|---|---|
| 1 | Location indicator of the aerodrome (M) | Location indicator of the aerodrome | nnnn |
| 2 | Identification of the type of message (M) | Type of message and sequence number | WS WRNG [n]n |
| 3 | Time of origin and validity period (M) | Day and time of issue and, where applicable, validity period in UTC | nnnnnn [VALID TL nnnnnn] or [VALID nnnnnn/nnnnnn] |
| 4 | IF THE WIND SHEAR WARNING IS TO BE CANCELLED, SEE DETAILS AT THE END OF THE TEMPLATE. | ||
| 5 | Phenomenon (M) | Identification of the phenomenon and its location | [MOD] or [SEV] WS IN APCH or [MOD] or [SEV] WS [APCH] RWYnnn or [MOD] or [SEV] WS IN CLIMB-OUT or [MOD] or [SEV] WS CLIMB-OUT RWYnnn or MBST IN APCH or MBST [APCH] RWYnnn or MBST IN CLIMB-OUT or MBST CLIMB-OUT RWYnnn |
| 6 | Observed, reported or forecast phenomenon (M) | Identification whether the phenomenon is observed or reported and expected to continue, or forecast | REP AT nnnn nnnnnnnn or OBS [AT nnnn] or FCST |
| 7 | Details of the phenomenon (C) | Description of the phenomenon causing the issuance of the wind shear warning | SFC WIND: nnn/nnKT nnnFT – WIND: nnn/nnKT or nnKT LOSS nnNM (or nnKM) FNA RWYnn or nnKT GAIN nnNM (or nnKM) FNA RWYnn |
| OR | |||
| 8 | Cancellation of wind shear warning | Cancellation of wind shear warning referring to its identification | CNL WS WRNG [n]n nnnnnn/nnnnnn |
APPENDIX · Appendix 4 — Regulation (EU) 2017/373 · Regulation (EU) 2021/1338 · ATM/ANS Easy Access Rules · EAR revision 12 Mar 2025