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sensors Mode-S transponder

491D83

ICAO 24-bit transponder address · allocated to Portugal

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

Hex
491D83
Octal
22216603
Decimal
4,791,683
Country
PT
Tail
CS-GLC
Type
GLEX
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
66
Distinct callsigns
20
Country
PT
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S 491D83.

Country allocation

The ICAO 24-bit address 491D83 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
NJE4VP - 7 2026-07-25
NJE407E - 4 2026-04-13
NJE110E - 4 2026-04-13
NJE935G - 2 2026-07-02
NJE578L - 2 2026-06-23
NJE524M - 2 2026-07-19
NJE161G - 2 2026-04-16
NJE022P - 2 2026-07-17
NJE939Q - 1 2026-06-29
NJE920Q - 1 2026-07-05
NJE918T - 1 2026-06-27
NJE866F - 1 2026-07-06
NJE829B - 1 2026-06-21
NJE817R - 1 2026-06-21
NJE816A - 1 2026-07-26
NJE805D - 1 2026-04-20
NJE732W - 1 2026-07-01
NJE725V - 1 2026-06-13
NJE714M - 1 2026-06-13
NJE714A - 1 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NJE816A - Jul 26, 21:25 UTCJul 26, 22:45 UTC1h 20m
2026-07-25 NJE4VP - Jul 25, 18:15 UTCJul 25, 19:15 UTC1h 0m
2026-07-19 NJE524M - Jul 19, 11:30 UTCJul 19, 20:20 UTC8h 50m
2026-07-19 NJE524M - Jul 19, 10:00 UTCJul 19, 10:20 UTC20m
2026-07-18 NJE121Q - Jul 18, 14:55 UTCJul 18, 17:00 UTC2h 5m
2026-07-18 NJE634K - Jul 18, 10:40 UTCJul 18, 11:55 UTC1h 15m
2026-07-17 NJE022P - Jul 17, 14:24 UTCJul 17, 20:50 UTC6h 25m
2026-07-13 NJE022P RTM → EWR Jul 13, 20:20 UTCJul 14, 04:05 UTC7h 45m
2026-07-13 NJE4VP LBG → RTM Jul 13, 17:15 UTCJul 13, 17:55 UTC40m
2026-07-13 NJE4VP - Jul 13, 15:15 UTCJul 13, 16:00 UTC45m
2026-07-12 NJE416H TEB → BQH Jul 12, 10:20 UTCJul 12, 16:40 UTC6h 20m
2026-07-11 NJE4VP IAD → TEB Jul 11, 16:40 UTCJul 11, 17:25 UTC45m
2026-07-06 NJE866F - Jul 6, 10:25 UTCJul 6, 19:00 UTC8h 35m
2026-07-05 NJE920Q - Jul 5, 22:50 UTCJul 5, 23:15 UTC25m
2026-07-05 NJE104U - Jul 5, 14:55 UTCJul 5, 21:45 UTC6h 50m
2026-07-02 NJE935G - Jul 2, 13:20 UTCJul 2, 20:05 UTC6h 45m
2026-07-02 NJE935G - Jul 2, 08:20 UTCJul 2, 11:00 UTC2h 40m
2026-07-01 NJE732W - Jul 1, 19:10 UTCJul 1, 20:00 UTC50m
2026-06-29 NJE939Q - Jun 29, 16:39 UTCJun 29, 19:35 UTC2h 55m
2026-06-29 NJE607G ATH → SKG Jun 29, 14:39 UTCJun 29, 15:14 UTC35m
2026-06-28 NJE235N - Jun 28, 04:44 UTCJun 28, 08:55 UTC4h 10m
2026-06-27 NJE373A - Jun 27, 11:59 UTCJun 27, 13:20 UTC1h 20m
2026-06-27 NJE918T - Jun 27, 08:49 UTCJun 27, 10:14 UTC1h 25m
2026-06-26 NJE096H - Jun 26, 14:29 UTCJun 26, 15:34 UTC1h 5m
2026-06-26 NJE554G - Jun 26, 11:00 UTCJun 26, 12:44 UTC1h 45m
2026-06-26 NJE045R - Jun 26, 06:29 UTCJun 26, 09:20 UTC2h 50m
2026-06-25 NJE282W - Jun 25, 10:15 UTCJun 25, 11:15 UTC1h 0m
2026-06-24 NJE011Q - Jun 24, 12:44 UTCJun 24, 14:15 UTC1h 30m
2026-06-23 NJE578L - Jun 23, 03:25 UTCJun 23, 10:35 UTC7h 10m
2026-06-22 NJE578L ZRH → MDW Jun 22, 06:10 UTCJun 22, 15:05 UTC8h 55m
2026-06-21 NJE671R - Jun 21, 12:55 UTCJun 21, 13:39 UTC45m
2026-06-21 NJE817R - Jun 21, 10:34 UTCJun 21, 11:20 UTC45m
2026-06-21 NJE829B - Jun 21, 08:15 UTCJun 21, 08:54 UTC40m
2026-06-21 NJE626N - Jun 21, 05:35 UTCJun 21, 07:04 UTC1h 30m
2026-06-13 NJE725V NCE → LBG Jun 13, 15:55 UTCJun 13, 17:05 UTC1h 10m
2026-06-13 NJE714M - Jun 13, 13:15 UTCJun 13, 14:50 UTC1h 35m
2026-06-12 NJE531U BGO → NHT Jun 12, 09:45 UTCJun 12, 11:20 UTC1h 35m
2026-06-11 NJE445K - Jun 11, 15:45 UTCJun 11, 17:30 UTC1h 45m
2026-06-10 NJE504A ZRH → LBG Jun 10, 14:25 UTCJun 10, 15:25 UTC1h 0m
2026-06-10 NJE201M MAD → ZRH Jun 10, 11:45 UTCJun 10, 13:15 UTC1h 30m
2026-06-10 NJE443T - Jun 10, 08:35 UTCJun 10, 09:15 UTC40m
2026-06-09 NJE714A - Jun 9, 17:05 UTCJun 9, 17:50 UTC45m
2026-06-09 NJE084Q - Jun 9, 08:45 UTCJun 9, 10:20 UTC1h 35m
2026-06-08 NJE4VP - Jun 8, 16:30 UTCJun 8, 17:35 UTC1h 5m
2026-06-08 NJE4VP - Jun 8, 05:40 UTCJun 8, 06:40 UTC1h 0m
2026-06-05 NJE311R - Jun 5, 09:10 UTCJun 5, 11:15 UTC2h 5m
2026-06-04 NJE707P LIS → CAT Jun 4, 08:35 UTCJun 4, 08:55 UTC20m
2026-06-03 NJE188K - Jun 3, 14:10 UTCJun 3, 16:25 UTC2h 15m
2026-06-03 NJE512K - Jun 3, 07:35 UTCJun 3, 08:50 UTC1h 15m
2026-06-02 NJE082W - Jun 2, 12:50 UTCJun 2, 13:45 UTC55m

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-GLC page for operator, model, and routing details .

Mode-S 491D83 frequently asked

What is Mode-S code 491D83?
491D83 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-GLC.
Where is Mode-S 491D83 registered?
Mode-S code 491D83 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 491D83 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 491D83, octal 22216603, decimal 4,791,683.
What flights does 491D83 operate?
Mode-S 491D83 has broadcast 20 distinct callsigns, including NJE4VP, NJE407E, NJE110E, NJE935G, NJE578L.