sensors Mode-S transponder

491D88

ICAO 24-bit transponder address · allocated to Portugal

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

Hex
491D88
Octal
22216610
Decimal
4,791,688
Country
PT
Tail
CS-GLH
Type
GLEX
No current signal · last broadcast 8d ago
Flights observed
54
Distinct callsigns
20
Country
PT
Last broadcast
8d ago

Last known position

Most recent position reported by Mode-S 491D88.

Country allocation

The ICAO 24-bit address 491D88 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
NJE293T - 5 2026-06-26
NJE9MD - 3 2026-07-06
NJE340D - 2 2026-07-25
NJE978P - 1 2026-07-21
NJE925E - 1 2026-06-28
NJE913A - 1 2026-06-11
NJE898B - 1 2026-06-21
NJE887Q - 1 2026-07-11
NJE844U - 1 2026-06-19
NJE836M - 1 2026-07-23
NJE804Y - 1 2026-07-19
NJE784Y - 1 2026-07-16
NJE781T - 1 2026-06-28
NJE747T - 1 2026-06-27
NJE728M - 1 2026-07-10
NJE725E - 1 2026-06-27
NJE695B - 1 2026-07-18
NJE681G - 1 2026-06-23
NJE675G - 1 2026-07-15
NJE634V - 1 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 NJE340D - Jul 25, 17:50 UTCJul 25, 20:15 UTC2h 25m
2026-07-23 NJE340D - Jul 23, 19:10 UTCJul 24, 01:35 UTC6h 25m
2026-07-23 NJE836M - Jul 23, 11:55 UTCJul 23, 14:05 UTC2h 10m
2026-07-22 NJE449T - Jul 22, 11:20 UTCJul 22, 12:55 UTC1h 35m
2026-07-21 NJE978P - Jul 21, 12:55 UTCJul 21, 13:35 UTC40m
2026-07-21 NJE384W - Jul 21, 09:50 UTCJul 21, 11:05 UTC1h 15m
2026-07-20 NJE538H - Jul 20, 15:40 UTCJul 20, 17:05 UTC1h 25m
2026-07-20 NJE411G LBG → BQH Jul 20, 11:10 UTCJul 20, 12:05 UTC55m
2026-07-20 NJE286N - Jul 20, 08:20 UTCJul 20, 09:55 UTC1h 35m
2026-07-19 NJE394E - Jul 19, 13:20 UTCJul 19, 14:40 UTC1h 20m
2026-07-19 NJE804Y - Jul 19, 09:00 UTCJul 19, 10:00 UTC1h 0m
2026-07-18 NJE695B - Jul 18, 12:10 UTCJul 18, 13:40 UTC1h 30m
2026-07-17 NJE511Q - Jul 17, 17:25 UTCJul 17, 18:44 UTC1h 20m
2026-07-17 NJE566Y BMA → ODE Jul 17, 06:40 UTCJul 17, 07:40 UTC1h 0m
2026-07-16 NJE784Y - Jul 16, 12:40 UTCJul 16, 13:25 UTC45m
2026-07-16 NJE442G - Jul 16, 09:40 UTCJul 16, 10:00 UTC20m
2026-07-16 NJE164C - Jul 16, 08:05 UTCJul 16, 08:40 UTC35m
2026-07-15 NJE389E MXP → BMA Jul 15, 11:50 UTCJul 15, 14:00 UTC2h 10m
2026-07-15 NJE675G HEL → MXP Jul 15, 07:05 UTCJul 15, 09:35 UTC2h 30m
2026-07-13 NJE518C - Jul 13, 12:30 UTCJul 13, 14:55 UTC2h 25m
2026-07-12 NJE363M IBZ → BQH Jul 12, 17:15 UTCJul 12, 19:20 UTC2h 5m
2026-07-12 NJE215T FLR → IBZ Jul 12, 13:50 UTCJul 12, 15:30 UTC1h 40m
2026-07-12 NJE224P BQH → FLR Jul 12, 10:35 UTCJul 12, 12:25 UTC1h 50m
2026-07-11 NJE225K - Jul 11, 16:05 UTCJul 11, 17:50 UTC1h 45m
2026-07-11 NJE573U - Jul 11, 13:25 UTCJul 11, 14:40 UTC1h 15m
2026-07-11 NJE887Q BCN → LBG Jul 11, 09:20 UTCJul 11, 10:35 UTC1h 15m
2026-07-10 NJE088L GVA → BCN Jul 10, 18:25 UTCJul 10, 19:35 UTC1h 10m
2026-07-10 NJE728M - Jul 10, 16:20 UTCJul 10, 17:00 UTC40m
2026-07-10 NJE480G IBZ → NCE Jul 10, 12:15 UTCJul 10, 13:25 UTC1h 10m
2026-07-10 NJE041G - Jul 10, 09:30 UTCJul 10, 10:00 UTC30m
2026-07-09 NJE515F - Jul 9, 12:30 UTCJul 9, 13:55 UTC1h 25m
2026-07-07 NJE250H - Jul 7, 23:50 UTCJul 8, 07:35 UTC7h 45m
2026-07-06 NJE9MD TEB → CMH Jul 6, 18:25 UTCJul 6, 19:35 UTC1h 10m
2026-07-05 NJE602R SFO → TEB Jul 5, 15:45 UTCJul 5, 20:25 UTC4h 40m
2026-06-29 NJE631V LIS → SFO Jun 29, 09:54 UTCJun 29, 21:19 UTC11h 25m
2026-06-28 NJE925E - Jun 28, 13:40 UTCJun 28, 15:49 UTC2h 10m
2026-06-28 NJE781T LBG → GVA Jun 28, 09:45 UTCJun 28, 10:35 UTC50m
2026-06-27 NJE600F NCE → LBG Jun 27, 14:20 UTCJun 27, 15:30 UTC1h 10m
2026-06-27 NJE725E GOA → NCE Jun 27, 12:39 UTCJun 27, 13:04 UTC25m
2026-06-27 NJE747T BDS → GOA Jun 27, 08:49 UTCJun 27, 10:10 UTC1h 20m
2026-06-27 NJE634V - Jun 27, 05:49 UTCJun 27, 06:15 UTC25m
2026-06-26 NJE293T - Jun 26, 13:55 UTCJun 26, 17:00 UTC3h 5m
2026-06-26 NJE293T - Jun 26, 11:34 UTCJun 26, 12:14 UTC40m
2026-06-26 NJE293T - Jun 26, 04:00 UTCJun 26, 04:10 UTC10m
2026-06-24 NJE293T - Jun 24, 03:35 UTCJun 24, 03:55 UTC20m
2026-06-23 NJE293T - Jun 23, 19:50 UTCJun 23, 22:10 UTC2h 20m
2026-06-23 NJE681G - Jun 23, 14:10 UTCJun 23, 17:04 UTC2h 55m
2026-06-21 NJE898B BTV → LTN Jun 21, 23:55 UTCJun 22, 06:05 UTC6h 10m
2026-06-20 NJE9MD TEB → BTV Jun 20, 20:25 UTCJun 20, 21:14 UTC50m
2026-06-19 NJE844U - Jun 19, 13:34 UTCJun 19, 15:39 UTC2h 5m

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

Mode-S 491D88 frequently asked

What is Mode-S code 491D88?
491D88 is an ICAO 24-bit transponder address. Allocated to Portugal. Assigned to CS-GLH.
Where is Mode-S 491D88 registered?
Mode-S code 491D88 is allocated to Portugal (PT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 491D88 broadcasting right now?
No active broadcast right now. Last signal was 8d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 491D88, octal 22216610, decimal 4,791,688.
What flights does 491D88 operate?
Mode-S 491D88 has broadcast 20 distinct callsigns, including NJE293T, NJE9MD, NJE340D, NJE978P, NJE925E.