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sensors Mode-S transponder

8940A4

ICAO 24-bit transponder address · allocated to Bahrain

Currently assigned to A9C-ND · AIRBUS A-321neo

Hex
8940A4
Octal
42240244
Decimal
8,994,980
Country
BH
Tail
A9C-ND
Type
A21N
No current signal · last broadcast 4h ago
Flights observed
292
Distinct callsigns
20
Country
BH
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 8940A4.

Country allocation

The ICAO 24-bit address 8940A4 falls within the block assigned to Bahrain (BH) by ICAO Annex 10, Volume III. Every aircraft registered in Bahrain receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
GFA16I Gulf Air 25 2026-07-21
GFA17J Gulf Air 17 2026-07-20
GFA023 - 14 2026-07-20
GFA022 - 14 2026-07-20
GFA026 - 13 2026-07-22
GFA018 - 12 2026-07-14
GFA86F - 11 2026-07-12
GFA512 - 11 2026-07-12
GFA027 Gulf Air 11 2026-07-22
GFA513 - 9 2026-07-12
GFA145 Gulf Air 8 2026-07-23
GFA144 Gulf Air 8 2026-07-22
GFA019 - 8 2026-07-14
GFA87S - 7 2026-07-12
GFA057 Gulf Air 7 2026-06-12
GFA056 Gulf Air 6 2026-06-11
GFA025 - 6 2026-07-19
GFA024 Gulf Air 6 2026-07-19
GFA249 Gulf Air 5 2026-07-24
GFA248 Gulf Air 5 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 GFA249 DAC → BAH Jul 24, 14:40 UTCJul 24, 19:40 UTC5h 0m
2026-07-24 GFA248 BAH → DAC Jul 24, 08:10 UTCJul 24, 13:25 UTC5h 15m
2026-07-23 GFA145 MLE → BAH Jul 23, 03:10 UTCJul 23, 18:40 UTC15h 30m
2026-07-22 GFA145 MLE → BAH Jul 22, 21:05 UTCJul 23, 18:40 UTC21h 35m
2026-07-22 GFA144 BAH → MLE Jul 22, 20:45 UTCJul 23, 18:40 UTC21h 55m
2026-07-22 GFA026 - Jul 22, 15:30 UTCJul 22, 15:45 UTC15m
2026-07-22 GFA026 - Jul 22, 11:15 UTCJul 22, 14:15 UTC3h 0m
2026-07-22 GFA027 BAH → FCO Jul 22, 00:55 UTCJul 22, 04:20 UTC3h 25m
2026-07-21 GFA027 BAH → FCO Jul 21, 22:55 UTCJul 21, 23:10 UTC15m
2026-07-21 GFA16I FRA → BAH Jul 21, 16:55 UTCJul 21, 17:10 UTC15m
2026-07-21 GFA16I FRA → BAH Jul 21, 11:35 UTCJul 21, 15:30 UTC3h 55m
2026-07-20 GFA17J BAH → FRA Jul 20, 23:00 UTCJul 21, 05:05 UTC6h 5m
2026-07-20 GFA022 - Jul 20, 17:00 UTCJul 20, 17:25 UTC25m
2026-07-20 GFA022 - Jul 20, 12:00 UTCJul 20, 15:35 UTC3h 35m
2026-07-20 GFA023 - Jul 20, 00:55 UTCJul 20, 04:45 UTC3h 50m
2026-07-19 GFA023 - Jul 19, 22:55 UTCJul 19, 23:10 UTC15m
2026-07-19 GFA024 MXP → BAH Jul 19, 16:10 UTCJul 19, 16:25 UTC15m
2026-07-19 GFA024 MXP → BAH Jul 19, 11:15 UTCJul 19, 14:50 UTC3h 35m
2026-07-19 GFA024 MXP → BAH Jul 19, 09:25 UTCJul 19, 09:55 UTC30m
2026-07-19 GFA025 MXP → NCE Jul 19, 07:00 UTCJul 19, 07:40 UTC40m
2026-07-19 GFA025 - Jul 19, 00:55 UTCJul 19, 04:40 UTC3h 45m
2026-07-18 GFA025 - Jul 18, 23:00 UTCJul 18, 23:10 UTC10m
2026-07-18 GFA026 - Jul 18, 11:00 UTCJul 18, 15:55 UTC4h 55m
2026-07-17 GFA027 - Jul 17, 23:00 UTCJul 18, 04:15 UTC5h 16m
2026-07-16 GFA190 - Jul 16, 14:05 UTCJul 16, 14:25 UTC20m
2026-07-16 GFA189 - Jul 16, 11:25 UTCJul 16, 11:34 UTC10m
2026-07-16 GFA251 - Jul 16, 04:40 UTCJul 16, 09:45 UTC5h 5m
2026-07-15 GFA250 - Jul 15, 21:55 UTCJul 16, 03:10 UTC5h 15m
2026-07-15 GFA022 - Jul 15, 16:00 UTCJul 15, 16:20 UTC20m
2026-07-15 GFA022 - Jul 15, 11:00 UTCJul 15, 14:40 UTC3h 40m
2026-07-15 GFA023 - Jul 15, 00:45 UTCJul 15, 04:50 UTC4h 5m
2026-07-14 GFA023 - Jul 14, 23:15 UTCJul 14, 23:30 UTC15m
2026-07-14 GFA018 - Jul 14, 15:30 UTCJul 14, 15:55 UTC25m
2026-07-14 GFA018 - Jul 14, 10:05 UTCJul 14, 14:15 UTC4h 10m
2026-07-14 GFA019 - Jul 14, 01:00 UTCJul 14, 05:50 UTC4h 50m
2026-07-13 GFA019 - Jul 13, 23:05 UTCJul 13, 23:20 UTC15m
2026-07-13 GFA531 - Jul 13, 20:35 UTCJul 13, 21:00 UTC25m
2026-07-13 GFA530 - Jul 13, 18:45 UTCJul 13, 19:15 UTC30m
2026-07-13 GFA16I FRA → BAH Jul 13, 16:40 UTCJul 13, 17:00 UTC20m
2026-07-13 GFA16I FRA → BAH Jul 13, 11:25 UTCJul 13, 15:20 UTC3h 55m
2026-07-13 GFA17J - Jul 13, 00:15 UTCJul 13, 04:35 UTC4h 20m
2026-07-12 GFA17J - Jul 12, 22:40 UTCJul 12, 22:55 UTC15m
2026-07-12 GFA513 - Jul 12, 20:05 UTCJul 12, 20:50 UTC45m
2026-07-12 GFA512 - Jul 12, 17:25 UTCJul 12, 18:30 UTC1h 5m
2026-07-12 GFA86F - Jul 12, 15:20 UTCJul 12, 15:45 UTC25m
2026-07-12 GFA86F - Jul 12, 10:25 UTCJul 12, 14:01 UTC3h 35m
2026-07-12 GFA87S - Jul 12, 00:30 UTCJul 12, 04:40 UTC4h 10m
2026-07-11 GFA87S - Jul 11, 22:55 UTCJul 11, 23:10 UTC15m
2026-07-11 GFA026 - Jul 11, 15:50 UTCJul 11, 16:10 UTC20m
2026-07-11 GFA026 - Jul 11, 10:55 UTCJul 11, 14:20 UTC3h 25m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the A9C-ND page for operator, model, and routing details .

Mode-S 8940A4 frequently asked

What is Mode-S code 8940A4?
8940A4 is an ICAO 24-bit transponder address. Allocated to Bahrain. Assigned to A9C-ND.
Where is Mode-S 8940A4 registered?
Mode-S code 8940A4 is allocated to Bahrain (BH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8940A4 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8940A4, octal 42240244, decimal 8,994,980.
What flights does 8940A4 operate?
Mode-S 8940A4 has broadcast 20 distinct callsigns, including GFA16I, GFA17J, GFA023, GFA022, GFA026.