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sensors Mode-S transponder

491D84

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-GLD · BOMBARDIER BD-700 Global 6000/6500

Hex
491D84
Octal
22216604
Decimal
4,791,684
Country
PT
Tail
CS-GLD
Type
GLEX
No current signal · last broadcast 20h ago
Flights observed
101
Distinct callsigns
20
Country
PT
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 491D84.

Country allocation

The ICAO 24-bit address 491D84 falls within the block assigned to Portugal (PT) by ICAO Annex 10, Volume III. Every aircraft registered in Portugal 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
NJE5NV - 14 2026-07-12
NJE596B - 10 2026-04-16
NJE744C - 2 2026-05-25
NJE741R - 2 2026-05-30
NJE693Q - 2 2026-04-14
NJE685Y - 2 2026-04-14
NJE604E - 2 2026-05-17
NJE407G - 2 2026-04-17
NJE030U - 2 2026-06-12
NJE008V - 2 2026-06-08
NJU848T - 1 2026-05-05
NJU677T - 1 2026-04-17
NJE986Q - 1 2026-05-31
NJE977D - 1 2026-06-05
NJE965U - 1 2026-06-19
NJE941L - 1 2026-05-27
NJE926T - 1 2026-04-30
NJE926C - 1 2026-06-07
NJE907G - 1 2026-06-19
NJE893W - 1 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 NJE5NV - Jul 12, 22:55 UTCJul 13, 06:45 UTC7h 50m
2026-07-11 NJE5NV - Jul 11, 21:15 UTCJul 11, 22:20 UTC1h 5m
2026-07-06 NJE466Y - Jul 6, 11:45 UTCJul 6, 19:40 UTC7h 55m
2026-07-05 NJE301W - Jul 5, 14:15 UTCJul 5, 15:40 UTC1h 25m
2026-06-27 NJE5NV - Jun 27, 13:49 UTCJun 27, 15:45 UTC1h 55m
2026-06-27 NJE131H - Jun 27, 10:45 UTCJun 27, 11:25 UTC40m
2026-06-27 NJE401T - Jun 27, 08:25 UTCJun 27, 09:24 UTC1h 0m
2026-06-27 NJE651A - Jun 27, 06:15 UTCJun 27, 06:44 UTC30m
2026-06-26 NJE026Q - Jun 26, 08:50 UTCJun 26, 09:55 UTC1h 5m
2026-06-25 NJE511B - Jun 25, 16:05 UTCJun 25, 17:20 UTC1h 15m
2026-06-25 NJE297E - Jun 25, 12:15 UTCJun 25, 14:14 UTC2h 0m
2026-06-24 NJE5NV - Jun 24, 18:15 UTCJun 24, 18:55 UTC40m
2026-06-23 NJE663F - Jun 23, 07:35 UTCJun 23, 08:45 UTC1h 10m
2026-06-22 NJE136G - Jun 22, 15:50 UTCJun 22, 16:24 UTC35m
2026-06-22 NJE5NV - Jun 22, 10:44 UTCJun 22, 11:50 UTC1h 5m
2026-06-22 NJE301A - Jun 22, 07:19 UTCJun 22, 08:44 UTC1h 25m
2026-06-21 NJE264L - Jun 21, 16:19 UTCJun 21, 16:59 UTC40m
2026-06-21 NJE494M - Jun 21, 13:54 UTCJun 21, 14:24 UTC30m
2026-06-21 NJE424L - Jun 21, 10:49 UTCJun 21, 12:49 UTC2h 0m
2026-06-20 NJE5NV - Jun 20, 13:24 UTCJun 20, 14:59 UTC1h 35m
2026-06-20 NJE5NV - Jun 20, 11:25 UTCJun 20, 12:04 UTC40m
2026-06-19 NJE907G - Jun 19, 20:34 UTCJun 19, 21:14 UTC40m
2026-06-19 NJE718Y - Jun 19, 18:05 UTCJun 19, 19:29 UTC1h 25m
2026-06-19 NJE636P - Jun 19, 13:24 UTCJun 19, 14:04 UTC40m
2026-06-19 NJE965U NCE → LCY Jun 19, 10:29 UTCJun 19, 11:54 UTC1h 25m
2026-06-19 NJE580C - Jun 19, 08:04 UTCJun 19, 09:19 UTC1h 15m
2026-06-18 NJE767C - Jun 18, 15:10 UTCJun 18, 17:45 UTC2h 35m
2026-06-17 NJE858G NCE → CAT Jun 17, 12:55 UTCJun 17, 15:05 UTC2h 10m
2026-06-17 NJE476Y - Jun 17, 09:05 UTCJun 17, 11:35 UTC2h 30m
2026-06-14 NJE351F - Jun 14, 17:20 UTCJun 15, 02:30 UTC9h 9m
2026-06-14 NJE813H - Jun 14, 08:50 UTCJun 14, 15:10 UTC6h 20m
2026-06-13 NJE362C - Jun 13, 11:35 UTCJun 13, 12:25 UTC50m
2026-06-12 NJE030U - Jun 12, 03:55 UTCJun 12, 10:05 UTC6h 10m
2026-06-12 NJE030U - Jun 12, 01:05 UTCJun 12, 01:25 UTC20m
2026-06-08 NJE008V - Jun 8, 15:35 UTCJun 8, 17:55 UTC2h 20m
2026-06-08 NJE008V - Jun 8, 07:30 UTCJun 8, 11:35 UTC4h 5m
2026-06-07 NJE399V ATH → ISL Jun 7, 21:25 UTCJun 7, 22:10 UTC45m
2026-06-07 NJE926C - Jun 7, 17:25 UTCJun 7, 20:25 UTC3h 0m
2026-06-07 NJE5NV ORK → FAB Jun 7, 13:05 UTCJun 7, 14:00 UTC55m
2026-06-07 NJE860P - Jun 7, 09:50 UTCJun 7, 12:00 UTC2h 10m
2026-06-07 NJE830R LBG → NCE Jun 7, 07:25 UTCJun 7, 08:35 UTC1h 10m
2026-06-06 NJE033H - Jun 6, 12:10 UTCJun 6, 13:00 UTC50m
2026-06-05 NJE977D FAB → BQH Jun 5, 07:20 UTCJun 5, 08:05 UTC45m
2026-06-04 NJE5NV - Jun 4, 10:45 UTCJun 4, 11:35 UTC50m
2026-06-04 NJE175B - Jun 4, 07:15 UTCJun 4, 08:10 UTC55m
2026-06-01 NJE698G - Jun 1, 10:10 UTCJun 1, 10:30 UTC20m
2026-06-01 NJE868R - Jun 1, 06:50 UTCJun 1, 08:15 UTC1h 25m
2026-05-31 NJE763B - May 31, 16:00 UTCMay 31, 17:15 UTC1h 15m
2026-05-31 NJE986Q - May 31, 11:35 UTCMay 31, 13:25 UTC1h 50m
2026-05-31 NJE495M - May 31, 08:25 UTCMay 31, 10:50 UTC2h 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 CS-GLD page for operator, model, and routing details .

Mode-S 491D84 frequently asked

What is Mode-S code 491D84?
491D84 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-GLD.
Where is Mode-S 491D84 registered?
Mode-S code 491D84 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 491D84 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 491D84, octal 22216604, decimal 4,791,684.
What flights does 491D84 operate?
Mode-S 491D84 has broadcast 20 distinct callsigns, including NJE5NV, NJE596B, NJE744C, NJE741R, NJE693Q.