Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

491311

ICAO 24-bit transponder address · allocated to Portugal

Currently assigned to CS-DXQ · CESSNA 560XL Citation XLS

Hex
491311
Octal
22211421
Decimal
4,789,009
Country
PT
Tail
CS-DXQ
Type
C56X
Broadcasting now · callsign NJE326R · 33,475 ft
Flights observed
99
Distinct callsigns
20
Country
PT
Last broadcast
4h ago

Current position

491311 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 491311 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
NJE9LB - 9 2026-07-09
NJE895L - 2 2026-06-08
NJE858V - 2 2026-05-29
NJE727B - 2 2026-06-26
NJE707W - 2 2026-06-07
NJE671M - 2 2026-06-16
NJE421U - 2 2026-05-31
NJE374H - 2 2026-06-10
NJE991V - 1 2026-06-19
NJE985D - 1 2026-06-01
NJE984Q - 1 2026-06-25
NJE976W - 1 2026-07-13
NJE969A - 1 2026-06-02
NJE964C - 1 2026-07-07
NJE934H - 1 2026-06-25
NJE927W - 1 2026-07-06
NJE927G - 1 2026-06-23
NJE925Y - 1 2026-06-26
NJE922D - 1 2026-07-12
NJE889E - 1 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 NJE150N - Jul 14, 09:10 UTCJul 14, 10:05 UTC55m
2026-07-14 NJE561T - Jul 14, 06:55 UTCJul 14, 07:40 UTC45m
2026-07-13 NJE783W - Jul 13, 15:50 UTCJul 13, 17:30 UTC1h 40m
2026-07-13 NJE976W - Jul 13, 11:20 UTCJul 13, 13:10 UTC1h 50m
2026-07-13 NJE566E - Jul 13, 08:45 UTCJul 13, 10:00 UTC1h 15m
2026-07-12 NJE922D ZRH → DUS Jul 12, 10:25 UTCJul 12, 11:20 UTC55m
2026-07-10 NJE335B - Jul 10, 15:20 UTCJul 10, 15:55 UTC35m
2026-07-10 NJE554W - Jul 10, 11:40 UTCJul 10, 13:10 UTC1h 30m
2026-07-10 NJE866T - Jul 10, 09:15 UTCJul 10, 09:50 UTC35m
2026-07-09 NJE728Q - Jul 9, 14:40 UTCJul 9, 15:45 UTC1h 5m
2026-07-09 NJE232B - Jul 9, 10:20 UTCJul 9, 13:05 UTC2h 45m
2026-07-09 NJE9LB - Jul 9, 08:25 UTCJul 9, 09:05 UTC40m
2026-07-08 NJE9LB - Jul 8, 14:40 UTCJul 8, 16:55 UTC2h 15m
2026-07-08 NJE9LB - Jul 8, 08:35 UTCJul 8, 10:20 UTC1h 45m
2026-07-07 NJE636B - Jul 7, 15:10 UTCJul 7, 16:20 UTC1h 10m
2026-07-07 NJE964C - Jul 7, 12:40 UTCJul 7, 13:50 UTC1h 10m
2026-07-07 NJE650R NCE → LBG Jul 7, 08:05 UTCJul 7, 09:25 UTC1h 20m
2026-07-06 NJE927W - Jul 6, 14:50 UTCJul 6, 15:20 UTC30m
2026-07-05 NJE033C - Jul 5, 11:50 UTCJul 5, 13:15 UTC1h 25m
2026-07-05 NJE593D - Jul 5, 08:25 UTCJul 5, 10:40 UTC2h 15m
2026-07-04 NJE155T - Jul 4, 11:35 UTCJul 4, 12:15 UTC40m
2026-07-04 NJE853H - Jul 4, 09:20 UTCJul 4, 10:10 UTC50m
2026-07-04 NJE217T - Jul 4, 08:00 UTCJul 4, 08:15 UTC15m
2026-07-04 NJE082Q - Jul 4, 05:15 UTCJul 4, 06:25 UTC1h 10m
2026-07-02 NJE244D - Jul 2, 13:50 UTCJul 2, 15:10 UTC1h 20m
2026-07-02 NJE9LB - Jul 2, 11:00 UTCJul 2, 11:35 UTC35m
2026-07-01 NJE084G - Jul 1, 17:20 UTCJul 1, 19:25 UTC2h 5m
2026-06-28 NJE767C - Jun 28, 06:10 UTCJun 28, 06:49 UTC40m
2026-06-27 NJE474H - Jun 27, 18:39 UTCJun 27, 20:09 UTC1h 30m
2026-06-27 NJE506Q - Jun 27, 15:19 UTCJun 27, 17:25 UTC2h 5m
2026-06-27 NJE348K - Jun 27, 10:10 UTCJun 27, 11:50 UTC1h 40m
2026-06-26 NJE727B - Jun 26, 19:50 UTCJun 26, 20:40 UTC50m
2026-06-26 NJE727B BRS → IBZ Jun 26, 15:49 UTCJun 26, 18:15 UTC2h 25m
2026-06-26 NJE925Y - Jun 26, 14:05 UTCJun 26, 14:35 UTC30m
2026-06-25 NJE934H - Jun 25, 15:20 UTCJun 25, 16:35 UTC1h 15m
2026-06-25 NJE192P - Jun 25, 09:40 UTCJun 25, 10:39 UTC1h 0m
2026-06-25 NJE984Q CGN → VIE Jun 25, 07:05 UTCJun 25, 08:14 UTC1h 10m
2026-06-24 NJE261H ACH → CGN Jun 24, 11:59 UTCJun 24, 12:44 UTC45m
2026-06-24 NJE9LB POZ → ACH Jun 24, 08:39 UTCJun 24, 09:49 UTC1h 10m
2026-06-23 NJE9LB - Jun 23, 16:50 UTCJun 23, 17:15 UTC25m
2026-06-23 NJE927G - Jun 23, 15:30 UTCJun 23, 16:20 UTC50m
2026-06-23 NJE327N - Jun 23, 12:20 UTCJun 23, 14:04 UTC1h 45m
2026-06-23 NJE9LB - Jun 23, 09:05 UTCJun 23, 09:45 UTC40m
2026-06-22 NJE665C - Jun 22, 16:24 UTCJun 22, 18:19 UTC1h 55m
2026-06-22 NJE108T - Jun 22, 08:29 UTCJun 22, 10:19 UTC1h 50m
2026-06-21 NJE140Q - Jun 21, 11:24 UTCJun 21, 11:44 UTC20m
2026-06-21 NJE417Q BRI → NHT Jun 21, 07:34 UTCJun 21, 10:19 UTC2h 45m
2026-06-21 NJE389L - Jun 21, 04:10 UTCJun 21, 05:44 UTC1h 35m
2026-06-20 NJE517R NCE → GVA Jun 20, 11:30 UTCJun 20, 12:09 UTC40m
2026-06-20 NJE303T - Jun 20, 09:14 UTCJun 20, 09:54 UTC40m

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

Mode-S 491311 frequently asked

What is Mode-S code 491311?
491311 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-DXQ.
Where is Mode-S 491311 registered?
Mode-S code 491311 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 491311 broadcasting right now?
Yes. Mode-S 491311 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 491311, octal 22211421, decimal 4,789,009.
What flights does 491311 operate?
Mode-S 491311 has broadcast 20 distinct callsigns, including NJE9LB, NJE895L, NJE858V, NJE727B, NJE707W.