Q) LFFF/QGWAU/I/BO/A/000/999/4901N00232E250 A) LFPG B) 0311271723C) 0311271754 E) BASIC GNSS UNAVBL FOR NPA 1901031723 TIL 1901031754 SBAS UNAVBL FOR APV 1901031731 TIL 1901031748 GBAS UNAVBL 1901031735 TIL 1901031746)

Here is the decoded information:

Q: Qualifier - the ICAO code of the FIR where the affected place, equipment or service is located (LFFF)

QGWAU: the subject of the NOTAM and its status. “G” GNSS.

I: Traffic affected, in this case, IFR.

BO: Purpose or significance of the NOTAM - "B" of operational significance selected for pre-flight information bulletin entry. "O" concerning flight operations.

A: Flight phase affected - "A" aerodrome.

000/999: The vertical limit

4901N00232E250: Coordinates and radius, indicates the coodinates and radius of the centre and size of the lateral limits of the place affectes by the NOTAM.

Item A) affected location: LFPG (four-letter ICAO aerodrome or FIR) – Charles de Gaulle

Item B) valid from: this shows the date (year YY, month MM, day DD, hours HH, minutes MM)

Item C) valid to

Item E) NOTAM message (BASIC GNSS UNAVBL FOR NPA 1901031723 TIL 1901031754 SBAS UNAVBL FOR APV 1901031731 TIL 1901031748 GBAS UNAVBL 1901031735 TIL 1901031746)

Note: NOTAM Time/Date format = A 10-digit date-time group (YYMMDDHHMM)
1901031735:
“19” = 2019
“01” = January
“03” = 3^rd day
“1735” = Time 1735 UTC

• GBAS is unavailable from the 3^rd of January of 2019 at 17:35 UTC until the 3^rd of January of 2019 at 17:46 UTC.