Apparatus

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sensors Mode-S transponder

4841A5

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-HZN · BOEING 737-800

Hex
4841A5
Octal
22040645
Decimal
4,735,397
Country
NL
Tail
PH-HZN
Type
B738
No current signal · last broadcast Jul 25, 09:55 UTC
Flights observed
513
Distinct callsigns
20
Country
NL
Last broadcast
Jul 25, 09:55 UTC

Last known position

Most recent position reported by Mode-S 4841A5.

Country allocation

The ICAO 24-bit address 4841A5 falls within the block assigned to Netherlands (NL) by ICAO Annex 10, Volume III. Every aircraft registered in Netherlands 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
TRA80E - 10 2026-06-24
TRA11L - 9 2026-06-24
TRA26F - 8 2026-06-21
TRA861G Transavia Holland 7 2026-07-17
TRA6513 - 7 2026-07-16
TRA25E Transavia Holland 7 2026-05-23
TRA20E - 7 2026-07-15
TRA14E - 7 2026-07-16
TRA84L - 6 2026-06-22
TRA21C - 6 2026-06-22
TRA9M Transavia Holland 5 2026-07-18
TRA98Q - 5 2026-07-01
TRA67E - 5 2026-06-28
TRA6148 Transavia Holland 5 2026-07-24
TRA5Y - 5 2026-07-13
TRA5962 Transavia Holland 5 2026-07-18
TRA5862 Transavia Holland 5 2026-06-25
TRA5276 Transavia Holland 5 2026-07-17
TRA30Q - 5 2026-07-13
TRA275T - 5 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 TRA38B BCN → AMS Jul 25, 08:00 UTCJul 25, 09:45 UTC1h 45m
2026-07-25 TRA52Q AMS → BCN Jul 25, 04:45 UTCJul 25, 06:45 UTC2h 0m
2026-07-24 TRA4R INN → RTM Jul 24, 22:00 UTCJul 24, 23:40 UTC1h 40m
2026-07-24 TRA427M AMS → PSA Jul 24, 19:35 UTCJul 24, 21:05 UTC1h 30m
2026-07-24 TRA6148 ALC → AMS Jul 24, 15:15 UTCJul 24, 17:35 UTC2h 20m
2026-07-24 TRA48K AMS → HER Jul 24, 11:10 UTCJul 24, 13:30 UTC2h 20m
2026-07-24 TRA5680 IBZ → AMS Jul 24, 07:00 UTCJul 24, 09:05 UTC2h 5m
2026-07-24 TRA79N AMS → IBZ Jul 24, 03:40 UTCJul 24, 05:50 UTC2h 10m
2026-07-23 TRA12B BCN → AMS Jul 23, 15:10 UTCJul 23, 17:10 UTC2h 0m
2026-07-23 TRA51Y AMS → KGS Jul 23, 12:00 UTCJul 23, 13:45 UTC1h 45m
2026-07-23 TRA23H VLC → AMS Jul 23, 08:15 UTCJul 23, 10:25 UTC2h 10m
2026-07-23 TRA80H AMS → VLC Jul 23, 05:05 UTCJul 23, 07:00 UTC1h 55m
2026-07-22 TRA8A AMS → LPA Jul 22, 20:40 UTCJul 22, 23:00 UTC2h 20m
2026-07-22 TRA819R - Jul 22, 17:40 UTCJul 22, 19:35 UTC1h 55m
2026-07-22 TRA43X AMS → ALC Jul 22, 03:25 UTCJul 22, 05:25 UTC2h 0m
2026-07-21 TRA5628 PMI → AMS Jul 21, 22:35 UTCJul 22, 00:35 UTC2h 0m
2026-07-21 TRA72G - Jul 21, 19:30 UTCJul 21, 21:25 UTC1h 55m
2026-07-21 TRA29K PMO → AMS Jul 21, 15:15 UTCJul 21, 17:45 UTC2h 30m
2026-07-21 TRA5231 - Jul 21, 11:35 UTCJul 21, 13:55 UTC2h 20m
2026-07-20 TRA6342 IBZ → AMS Jul 20, 22:05 UTCJul 21, 00:20 UTC2h 15m
2026-07-20 TRA341M AMS → IBZ Jul 20, 18:30 UTCJul 20, 20:35 UTC2h 5m
2026-07-20 TRA6148 ALC → AMS Jul 20, 14:10 UTCJul 20, 16:20 UTC2h 10m
2026-07-20 TRA48K AMS → HER Jul 20, 10:40 UTCJul 20, 12:55 UTC2h 15m
2026-07-20 TRA16N - Jul 20, 07:00 UTCJul 20, 08:55 UTC1h 55m
2026-07-20 TRA93E RTM → PUY Jul 20, 03:55 UTCJul 20, 05:35 UTC1h 40m
2026-07-19 TRA22Y - Jul 19, 22:15 UTCJul 20, 00:40 UTC2h 25m
2026-07-19 TRA93Q RTM → PMI Jul 19, 18:20 UTCJul 19, 20:55 UTC2h 35m
2026-07-19 TRA4W - Jul 19, 14:30 UTCJul 19, 16:40 UTC2h 10m
2026-07-19 TRA6G FAO → EIN Jul 19, 11:00 UTCJul 19, 13:10 UTC2h 10m
2026-07-18 TRA56N EIN → AGP Jul 18, 20:25 UTCJul 18, 22:15 UTC1h 50m
2026-07-18 TRA9X - Jul 18, 17:30 UTCJul 18, 19:10 UTC1h 40m
2026-07-18 TRA65A - Jul 18, 13:40 UTCJul 18, 15:40 UTC2h 0m
2026-07-18 TRA15W EIN → IBZ Jul 18, 10:05 UTCJul 18, 12:10 UTC2h 5m
2026-07-18 TRA5962 CPH → EIN Jul 18, 06:55 UTCJul 18, 08:00 UTC1h 5m
2026-07-18 TRA9M IBZ → AMS Jul 18, 05:05 UTCJul 18, 06:10 UTC1h 5m
2026-07-17 TRA74K - Jul 17, 19:40 UTCJul 17, 20:55 UTC1h 15m
2026-07-17 TRA3P - Jul 17, 16:29 UTCJul 17, 17:55 UTC1h 25m
2026-07-17 TRA58G OSL → EIN Jul 17, 13:35 UTCJul 17, 15:10 UTC1h 35m
2026-07-17 TRA861G EIN → OSL Jul 17, 10:44 UTCJul 17, 12:15 UTC1h 30m
2026-07-17 TRA5276 BIO → EIN Jul 17, 07:50 UTCJul 17, 09:15 UTC1h 25m
2026-07-17 TRA275T - Jul 17, 05:04 UTCJul 17, 06:45 UTC1h 40m
2026-07-16 TRA14E IBZ → EIN Jul 16, 18:55 UTCJul 16, 21:00 UTC2h 5m
2026-07-16 TRA6513 - Jul 16, 15:14 UTCJul 16, 17:25 UTC2h 10m
2026-07-16 TRA58G - Jul 16, 12:14 UTCJul 16, 13:54 UTC1h 40m
2026-07-16 TRA861G - Jul 16, 09:45 UTCJul 16, 11:15 UTC1h 30m
2026-07-16 TRA5962 - Jul 16, 07:00 UTCJul 16, 08:05 UTC1h 5m
2026-07-16 TRA9M EIN → CPH Jul 16, 05:05 UTCJul 16, 06:10 UTC1h 5m
2026-07-15 TRA20E - Jul 15, 17:55 UTCJul 15, 20:15 UTC2h 20m
2026-07-15 TRA23J - Jul 15, 14:00 UTCJul 15, 16:35 UTC2h 35m
2026-07-15 TRA1U - Jul 15, 09:20 UTCJul 15, 12:45 UTC3h 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 PH-HZN page for operator, model, and routing details .

Mode-S 4841A5 frequently asked

What is Mode-S code 4841A5?
4841A5 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-HZN.
Where is Mode-S 4841A5 registered?
Mode-S code 4841A5 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4841A5 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 09:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4841A5, octal 22040645, decimal 4,735,397.
What flights does 4841A5 operate?
Mode-S 4841A5 has broadcast 20 distinct callsigns, including TRA80E, TRA11L, TRA26F, TRA861G, TRA6513.