sensors Mode-S transponder

491D9A

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-GLZ · BOMBARDIER BD-700 Global 5000/5500

Hex
491D9A
Octal
22216632
Decimal
4,791,706
Country
PT
Tail
CS-GLZ
Type
GL5T
No current signal · last broadcast 10h ago
Flights observed
39
Distinct callsigns
20
Country
PT
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 491D9A.

Country allocation

The ICAO 24-bit address 491D9A 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
NJE3HA - 4 2026-06-02
NJE302Y - 2 2026-04-25
NJE128N - 2 2026-04-16
NJE117E - 2 2026-04-16
NJE049V - 2 2026-04-17
NJU478L - 1 2026-06-01
NJU018E - 1 2026-05-22
NJE952R - 1 2026-04-13
NJE881H - 1 2026-05-25
NJE872F - 1 2026-05-30
NJE825T - 1 2026-05-29
NJE824G - 1 2026-05-28
NJE806R - 1 2026-05-31
NJE762G - 1 2026-05-25
NJE693G - 1 2026-05-26
NJE593L - 1 2026-05-30
NJE591B - 1 2026-05-23
NJE551K - 1 2026-04-17
NJE529Y - 1 2026-05-23
NJE521W - 1 2026-04-19

Recent flights last 39

DateFlightRouteTakeoffLandingDuration
2026-06-02 NJE3HA JER → LBG Jun 2, 07:20 UTCJun 2, 08:15 UTC55m
2026-06-01 NJE480Q EDI → JER Jun 1, 11:30 UTCJun 1, 12:40 UTC1h 10m
2026-06-01 NJU478L - Jun 1, 09:10 UTCJun 1, 10:05 UTC55m
2026-05-31 NJE806R - May 31, 16:35 UTCMay 31, 18:15 UTC1h 40m
2026-05-31 NJE053B FNI → NCE May 31, 12:20 UTCMay 31, 12:55 UTC35m
2026-05-31 NJE209D - May 31, 09:15 UTCMay 31, 09:45 UTC30m
2026-05-30 NJE872F - May 30, 14:15 UTCMay 30, 16:55 UTC2h 40m
2026-05-30 NJE472P - May 30, 10:40 UTCMay 30, 12:50 UTC2h 10m
2026-05-30 NJE593L PSR → VCE May 30, 08:30 UTCMay 30, 09:15 UTC45m
2026-05-29 NJE825T LIN → PSR May 29, 14:30 UTCMay 29, 15:25 UTC55m
2026-05-29 NJE305V - May 29, 10:05 UTCMay 29, 11:10 UTC1h 5m
2026-05-29 NJE278K - May 29, 07:25 UTCMay 29, 08:20 UTC55m
2026-05-28 NJE824G BMA → OBF May 28, 13:10 UTCMay 28, 14:50 UTC1h 40m
2026-05-28 NJE088T BRU → BMA May 28, 09:15 UTCMay 28, 11:00 UTC1h 45m
2026-05-27 NJE018L ARN → BRU May 27, 04:45 UTCMay 27, 06:34 UTC1h 50m
2026-05-26 NJE015V CIA → ARN May 26, 16:45 UTCMay 26, 19:20 UTC2h 35m
2026-05-26 NJE110U - May 26, 14:05 UTCMay 26, 15:45 UTC1h 40m
2026-05-26 NJE3HA ORK → ANR May 26, 11:50 UTCMay 26, 13:00 UTC1h 10m
2026-05-26 NJE693G - May 26, 08:19 UTCMay 26, 09:55 UTC1h 35m
2026-05-25 NJE762G - May 25, 16:25 UTCMay 25, 17:15 UTC50m
2026-05-25 NJE881H NCE → LBG May 25, 13:25 UTCMay 25, 14:35 UTC1h 10m
2026-05-24 NJE164A ATH → NCE May 24, 11:25 UTCMay 24, 13:30 UTC2h 5m
2026-05-23 NJE529Y - May 23, 16:40 UTCMay 23, 19:45 UTC3h 5m
2026-05-23 NJE3HA - May 23, 12:40 UTCMay 23, 13:30 UTC50m
2026-05-23 NJE591B - May 23, 10:10 UTCMay 23, 11:00 UTC50m
2026-05-22 NJU018E - May 22, 18:10 UTCMay 22, 19:15 UTC1h 5m
2026-05-22 NJE3HA BQH → FAB May 22, 15:40 UTCMay 22, 16:20 UTC40m
2026-04-25 NJE302Y BQH → BQH Apr 25, 07:35 UTCApr 25, 09:40 UTC2h 5m
2026-04-19 NJE302Y - Apr 19, 13:50 UTCApr 19, 14:30 UTC40m
2026-04-19 NJE349E ATH → FAB Apr 19, 09:25 UTCApr 19, 12:40 UTC3h 15m
2026-04-19 NJE521W LIN → ATH Apr 19, 05:55 UTCApr 19, 07:50 UTC1h 55m
2026-04-17 NJE049V - Apr 17, 15:20 UTCApr 17, 15:35 UTC15m
2026-04-17 NJE049V - Apr 17, 14:00 UTCApr 17, 15:15 UTC1h 15m
2026-04-17 NJE551K - Apr 17, 09:20 UTCApr 17, 11:15 UTC1h 55m
2026-04-16 NJE117E - Apr 16, 09:10 UTCApr 16, 09:45 UTC35m
2026-04-16 NJE117E - Apr 16, 07:34 UTCApr 16, 09:05 UTC1h 30m
2026-04-16 NJE128N - Apr 16, 05:09 UTCApr 16, 05:49 UTC40m
2026-04-16 NJE128N - Apr 16, 04:44 UTCApr 16, 05:05 UTC20m
2026-04-13 NJE952R - Apr 13, 17:05 UTCApr 13, 18:30 UTC1h 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-GLZ page for operator, model, and routing details .

Mode-S 491D9A frequently asked

What is Mode-S code 491D9A?
491D9A is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-GLZ.
Where is Mode-S 491D9A registered?
Mode-S code 491D9A is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 491D9A broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 491D9A, octal 22216632, decimal 4,791,706.
What flights does 491D9A operate?
Mode-S 491D9A has broadcast 20 distinct callsigns, including NJE3HA, NJE302Y, NJE128N, NJE117E, NJE049V.