Apparatus

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sensors Mode-S transponder

4841A9

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-HZW · BOEING 737-800

Hex
4841A9
Octal
22040651
Decimal
4,735,401
Country
NL
Tail
PH-HZW
Type
B738
Transponder active on ground
Flights observed
436
Distinct callsigns
20
Country
NL
Last broadcast
Jul 26, 19:55 UTC

Last known position

Most recent position reported by Mode-S 4841A9.

Country allocation

The ICAO 24-bit address 4841A9 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
TRA78T Transavia Holland 9 2026-07-24
TRA73V Transavia Holland 9 2026-07-24
TRA46G Transavia Holland 9 2026-07-25
TRA27L Transavia Holland 9 2026-07-25
TRA80E Transavia Holland 8 2026-07-23
TRA11L Transavia Holland 8 2026-07-23
TRA34P Transavia Holland 7 2026-07-26
TRA33T Transavia Holland 7 2026-07-26
TRA8B Transavia Holland 6 2026-06-20
TRA79X - 6 2026-06-20
TRA6513 Transavia Holland 6 2026-07-22
TRA5Y Transavia Holland 6 2026-07-26
TRA30Q - 6 2026-07-26
TRA17H - 6 2026-07-23
TRA5C - 5 2026-07-23
TRA14E - 5 2026-07-08
TRA861G - 4 2026-06-23
TRA84L - 4 2026-06-19
TRA7E - 4 2026-07-10
TRA6709 - 4 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TRA34P AMS → BRI Jul 26, 18:55 UTCJul 26, 19:55 UTC1h 0m
2026-07-26 TRA33T EIN → PRG Jul 26, 16:55 UTCJul 26, 17:55 UTC1h 0m
2026-07-26 TRA5Y AMS → LPA Jul 26, 14:35 UTCJul 26, 16:00 UTC1h 25m
2026-07-26 TRA30Q - Jul 26, 12:20 UTCJul 26, 13:35 UTC1h 15m
2026-07-26 TRA65A AMS → OPO Jul 26, 09:05 UTCJul 26, 11:15 UTC2h 10m
2026-07-26 TRA15W EIN → IBZ Jul 26, 05:55 UTCJul 26, 07:55 UTC2h 1m
2026-07-25 TRA2N AMS → HER Jul 25, 17:35 UTCJul 25, 20:00 UTC2h 25m
2026-07-25 TRA3V ALC → EIN Jul 25, 13:50 UTCJul 25, 16:25 UTC2h 35m
2026-07-25 TRA46G BCN → RTM Jul 25, 10:10 UTCJul 25, 12:35 UTC2h 25m
2026-07-25 TRA27L EIN → LIS Jul 25, 06:00 UTCJul 25, 08:30 UTC2h 30m
2026-07-24 TRA73V AMS → FAO Jul 24, 18:15 UTCJul 24, 20:10 UTC1h 55m
2026-07-24 TRA78T AMS → SVQ Jul 24, 15:10 UTCJul 24, 17:15 UTC2h 5m
2026-07-24 TRA95X RTM → NDR Jul 24, 12:25 UTCJul 24, 14:05 UTC1h 40m
2026-07-24 TRA6785 RTM → SZG Jul 24, 09:15 UTCJul 24, 11:05 UTC1h 50m
2026-07-24 TRA34P AMS → BRI Jul 24, 07:00 UTCJul 24, 08:00 UTC1h 0m
2026-07-24 TRA33T EIN → PRG Jul 24, 05:05 UTCJul 24, 06:05 UTC1h 0m
2026-07-23 TRA5C - Jul 23, 18:50 UTCJul 23, 20:55 UTC2h 5m
2026-07-23 TRA17H EIN → VLC Jul 23, 16:00 UTCJul 23, 17:50 UTC1h 50m
2026-07-23 TRA34P AMS → BRI Jul 23, 14:00 UTCJul 23, 15:00 UTC1h 0m
2026-07-23 TRA33T EIN → PRG Jul 23, 11:55 UTCJul 23, 13:00 UTC1h 5m
2026-07-23 TRA80E PMI → EIN Jul 23, 08:40 UTCJul 23, 10:45 UTC2h 5m
2026-07-23 TRA11L EIN → PMI Jul 23, 05:10 UTCJul 23, 06:55 UTC1h 45m
2026-07-22 TRA6708 ATH → EIN Jul 22, 16:50 UTCJul 22, 19:55 UTC3h 5m
2026-07-22 TRA5R RTM → EIN Jul 22, 12:55 UTCJul 22, 15:40 UTC2h 45m
2026-07-22 TRA6513 EIN → IBZ Jul 22, 05:05 UTCJul 22, 11:20 UTC6h 15m
2026-07-21 TRA71Z VLC → EIN Jul 21, 17:45 UTCJul 21, 19:50 UTC2h 5m
2026-07-21 TRA6F AMS → LJU Jul 21, 14:45 UTCJul 21, 16:40 UTC1h 55m
2026-07-21 TRA908P HER → EIN Jul 21, 10:10 UTCJul 21, 13:20 UTC3h 10m
2026-07-21 TRA907M EIN → HER Jul 21, 06:10 UTCJul 21, 09:00 UTC2h 50m
2026-07-20 TRA71Z VLC → EIN Jul 20, 17:50 UTCJul 20, 19:45 UTC1h 55m
2026-07-20 TRA38K AMS → VLC Jul 20, 14:40 UTCJul 20, 16:45 UTC2h 5m
2026-07-20 TRA66K EIN → RAK Jul 20, 05:30 UTCJul 20, 13:10 UTC7h 40m
2026-07-19 TRA5394 RHO → EIN Jul 19, 16:30 UTCJul 19, 20:00 UTC3h 30m
2026-07-19 TRA43K - Jul 19, 12:20 UTCJul 19, 15:20 UTC3h 0m
2026-07-19 TRA5084 SVQ → EIN Jul 19, 08:40 UTCJul 19, 10:50 UTC2h 10m
2026-07-19 TRA5083 EIN → SVQ Jul 19, 05:05 UTCJul 19, 07:35 UTC2h 30m
2026-07-18 TRA73V AMS → FAO Jul 18, 18:00 UTCJul 18, 19:55 UTC1h 55m
2026-07-18 TRA78T - Jul 18, 14:40 UTCJul 18, 16:45 UTC2h 5m
2026-07-18 TRA46G LIS → EIN Jul 18, 09:50 UTCJul 18, 11:55 UTC2h 5m
2026-07-18 TRA27L EIN → LIS Jul 18, 05:55 UTCJul 18, 08:40 UTC2h 45m
2026-07-17 TRA73V - Jul 17, 19:05 UTCJul 17, 21:00 UTC1h 55m
2026-07-17 TRA78T - Jul 17, 15:49 UTCJul 17, 18:05 UTC2h 15m
2026-07-17 TRA95X BCN → EIN Jul 17, 12:50 UTCJul 17, 14:35 UTC1h 45m
2026-07-17 TRA6785 RTM → SZG Jul 17, 09:20 UTCJul 17, 11:15 UTC1h 55m
2026-07-17 TRA34P AMS → BRI Jul 17, 07:14 UTCJul 17, 08:20 UTC1h 5m
2026-07-17 TRA33T EIN → PRG Jul 17, 05:10 UTCJul 17, 06:05 UTC55m
2026-07-16 TRA5C - Jul 16, 19:10 UTCJul 16, 21:10 UTC2h 0m
2026-07-16 TRA17H - Jul 16, 15:40 UTCJul 16, 17:30 UTC1h 50m
2026-07-16 TRA34P PRG → EIN Jul 16, 13:20 UTCJul 16, 14:29 UTC1h 10m
2026-07-16 TRA33T - Jul 16, 11:25 UTCJul 16, 12:20 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 PH-HZW page for operator, model, and routing details .

Mode-S 4841A9 frequently asked

What is Mode-S code 4841A9?
4841A9 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-HZW.
Where is Mode-S 4841A9 registered?
Mode-S code 4841A9 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4841A9 broadcasting right now?
Mode-S 4841A9 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4841A9, octal 22040651, decimal 4,735,401.
What flights does 4841A9 operate?
Mode-S 4841A9 has broadcast 20 distinct callsigns, including TRA78T, TRA73V, TRA46G, TRA27L, TRA80E.