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5U.md

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Label: 5U

Description

Appears to be autonomous requests for weather information sent after take off or prior arrival

Examples

Example 1 (Flight SK496, A330 LN-RKN)

  H3 WXRQ   0946/09 KORD/ESSA .LN-RKN
/TYP 1/STA CYYB/STA CYVO/STA CYBG

Example 2 (Flight LS029P, 737 G-JZBJ) - Message was sent exactly 10 minutes after departure from FUE

  01 WXRQ   029P/09 GCFV/EGCC .G-JZBJ
/TYP 1/STA LPPR/STA LPPT/STA LPFR

Example 3 (Flight W91359, G-WUKO A321neo)

EGGW EGSS EGNX-SA

Example 4 (Flight AA724, N771AN 777-200)

OS EIDW /WXACYQX

Example 5 (Flight CM445, HP-1721CMP 737-800)

Split across two messages

09A   KTPAKMIAKFLL

09AF  MPTOMPPA    

Example 6 (Flight AA199, N749US A319)

OS KDFW /WXRKOKC,M56KOKC,

Example 7 (Flight AA2939, N749US A319)

OS KMFE /WXRKMFE,M56KMFE,

Acronyms / Codes

Code Meaning
WXRQ Weather request
-SA Secondary alternate(?)

Analysis

Example 1:

KORD - Departure airport (Chicago ORD)

ESSA - Arrival airport (Stockholm ARN)

CYYB, CYVO and CYBG - These appear to be alternates?

Example 2

GCFV - Departure airport (Fuerteventura FUE)

EGCC - Arrival airport (Manchester MAN)

Example 3

EGGW - Destination airport (London Luton LTN)

EGSS - Alternate (London Stansted STN)

EGNX - Secondary alternate? (East Midlands EMA)

Message was sent approx. 45mins from arrival into Luton, so I am assuming it is requesting weather for all 3 airports

Example 4

EIDW - Destination airport

Example 5

Sent exactly 15 minutes after departure from KMCO, appears to be requesting weather data for Tampa (KTPA), Miami (KMIA) and Fort Lauderdale (KFLL). Second message begins with MPTO, the planned destination and MPPA appears to be the planned alternate

Example 6

This flight actually ended up diverting to San Antonio KSAN, was scheduled for Dallas KDFW. This message was sent immediately after exiting a hold prior to arrival into DFW.

KOKC appears to be the planned diversion

Example 7

Flight from KDFW to KMFE

Mesage was sent almost exactly 15 minutes after takeoff from KDFW

Example 8

Flight from EGNX to BIKF with VDL message 851349746

10,WX,131318,DHK3998,13,EGNX,BIKF,7333168,EGPH,EGPD,EGPO,1,0,

Analysis

Analysis of message 851349746

unknown number,WX,<Time in HHMMSS>,<Callsign>,unknown number,<Departure ICAO>,<Destination ICAO>,unknown number,<METAR request 1>,<METAR request 1>,<METAR request 1>,<METAR request boolean>,<TAF request boolean>

For METAR and TAF requests:

  • 1 = METAR or TAF requested for ICAOs listed
  • 0 = METAR or TAF not requested for ICAOs listed