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
Broadcasting now · callsign TRA74T · 32,375 ft
Flights observed
209
Distinct callsigns
20
Country
NL
Last broadcast
8h ago

Current position

4841A9 is currently broadcasting. Map zoomed to live position.

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
TRA46G Transavia Holland 6 2026-05-30
TRA27L Transavia Holland 6 2026-05-30
TRA79X Transavia Holland 5 2026-05-31
TRA8B Transavia Holland 4 2026-05-29
TRA78T Transavia Holland 4 2026-05-25
TRA73V Transavia Holland 4 2026-05-25
TRA40B Transavia Holland 4 2026-05-30
TRA25E Transavia Holland 4 2026-05-26
TRA24M Transavia Holland 4 2026-05-30
TRA84L Transavia Holland 3 2026-05-24
TRA80E Transavia Holland 3 2026-05-28
TRA5749 Transavia Holland 3 2026-04-15
TRA36J Transavia Holland 3 2026-05-15
TRA26F Transavia Holland 3 2026-05-26
TRA21C Transavia Holland 3 2026-05-24
TRA19M Transavia Holland 3 2026-05-15
TRA11L Transavia Holland 3 2026-05-28
TRA9Q Transavia Holland 2 2026-05-01
TRA93B Transavia Holland 2 2026-06-02
TRA92V Transavia Holland 2 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 TRA92A IBZ → RTM Jun 2, 18:10 UTCJun 2, 20:25 UTC2h 15m
2026-06-02 TRA19V FAO → RTM Jun 2, 14:35 UTCJun 2, 16:35 UTC2h 0m
2026-06-02 TRA93B AGP → BRU Jun 2, 12:50 UTCJun 2, 13:30 UTC40m
2026-06-02 TRA92V VRN → AMS Jun 2, 11:20 UTCJun 2, 11:55 UTC35m
2026-06-02 TRA36T EIN → ACE Jun 2, 08:15 UTCJun 2, 10:00 UTC1h 45m
2026-06-02 TRA6035 RTM → FCO Jun 2, 05:15 UTCJun 2, 07:00 UTC1h 45m
2026-06-01 TRA64R VLC → RTM Jun 1, 18:30 UTCJun 1, 20:25 UTC1h 55m
2026-06-01 TRA41A RTM → VLC Jun 1, 15:15 UTCJun 1, 17:20 UTC2h 5m
2026-06-01 TRA93B AGP → BRU Jun 1, 13:20 UTCJun 1, 13:55 UTC35m
2026-06-01 TRA92V VRN → AMS Jun 1, 11:55 UTCJun 1, 12:30 UTC35m
2026-06-01 TRA39U ALC → RTM Jun 1, 08:35 UTCJun 1, 10:50 UTC2h 15m
2026-06-01 TRA83R RTM → ALC Jun 1, 05:10 UTCJun 1, 07:05 UTC1h 55m
2026-05-31 TRA6092 FAO → RTM May 31, 18:45 UTCMay 31, 21:15 UTC2h 30m
2026-05-31 TRA79X ALC → BRU May 31, 15:15 UTCMay 31, 17:40 UTC2h 25m
2026-05-31 TRA6L ACE → AMS May 31, 10:35 UTCMay 31, 14:05 UTC3h 30m
2026-05-31 TRA94R - May 31, 08:25 UTCMay 31, 08:50 UTC25m
2026-05-30 TRA24M ALC → EIN May 30, 18:40 UTCMay 30, 20:50 UTC2h 10m
2026-05-30 TRA40B AMS → BCN May 30, 14:55 UTCMay 30, 16:55 UTC2h 0m
2026-05-30 TRA46G BCN → RTM May 30, 09:35 UTCMay 30, 11:55 UTC2h 20m
2026-05-30 TRA27L EIN → LIS May 30, 05:30 UTCMay 30, 08:00 UTC2h 30m
2026-05-29 TRA20E EIN → CPH May 29, 17:45 UTCMay 29, 20:15 UTC2h 30m
2026-05-29 TRA1B AGP → AMS May 29, 13:55 UTCMay 29, 16:15 UTC2h 20m
2026-05-29 TRA8B RTM → LIS May 29, 09:20 UTCMay 29, 12:00 UTC2h 40m
2026-05-29 TRA79X ALC → BRU May 29, 05:35 UTCMay 29, 08:05 UTC2h 30m
2026-05-28 TRA5862 OSL → EIN May 28, 19:05 UTCMay 28, 20:35 UTC1h 30m
2026-05-28 TRA861G EIN → OSL May 28, 16:25 UTCMay 28, 18:05 UTC1h 40m
2026-05-28 TRA74K NCE → EIN May 28, 14:00 UTCMay 28, 15:30 UTC1h 30m
2026-05-28 TRA3P FNC → AMS May 28, 11:30 UTCMay 28, 12:55 UTC1h 25m
2026-05-28 TRA80E PMI → EIN May 28, 08:20 UTCMay 28, 10:20 UTC2h 0m
2026-05-28 TRA11L EIN → PMI May 28, 05:10 UTCMay 28, 07:00 UTC1h 50m
2026-05-27 TRA69Z FAO → EIN May 27, 16:50 UTCMay 27, 19:25 UTC2h 35m
2026-05-27 TRA88G IBZ → RTM May 27, 13:15 UTCMay 27, 16:00 UTC2h 45m
2026-05-27 TRA15Y RTM → GRO May 27, 08:50 UTCMay 27, 11:20 UTC2h 30m
2026-05-27 TRA2P TFS → EIN May 27, 05:09 UTCMay 27, 07:55 UTC2h 45m
2026-05-26 TRA26F ALC → EIN May 26, 17:55 UTCMay 26, 20:05 UTC2h 10m
2026-05-26 TRA25E EIN → ALC May 26, 14:30 UTCMay 26, 16:35 UTC2h 5m
2026-05-26 TRA46G BCN → RTM May 26, 09:15 UTCMay 26, 11:34 UTC2h 20m
2026-05-26 TRA27L EIN → LIS May 26, 05:15 UTCMay 26, 07:45 UTC2h 30m
2026-05-25 TRA73V AMS → FAO May 25, 17:25 UTCMay 25, 19:25 UTC1h 59m
2026-05-25 TRA78T AMS → SVQ May 25, 14:25 UTCMay 25, 16:20 UTC1h 55m
2026-05-25 TRA46G BCN → RTM May 25, 09:40 UTCMay 25, 12:00 UTC2h 20m
2026-05-25 TRA27L EIN → LIS May 25, 06:00 UTCMay 25, 08:35 UTC2h 35m
2026-05-24 TRA5964 CPH → EIN May 24, 19:20 UTCMay 24, 20:20 UTC1h 0m
2026-05-24 TRA5963 EIN → CPH May 24, 17:25 UTCMay 24, 18:30 UTC1h 5m
2026-05-24 TRA21C BCN → EIN May 24, 14:30 UTCMay 24, 16:20 UTC1h 50m
2026-05-24 TRA84L EIN → BCN May 24, 11:35 UTCMay 24, 13:15 UTC1h 40m
2026-05-24 TRA18U IBZ → EIN May 24, 08:25 UTCMay 24, 10:35 UTC2h 10m
2026-05-24 TRA71L ACE → EIN May 24, 05:10 UTCMay 24, 07:15 UTC2h 5m
2026-05-23 TRA24M ALC → EIN May 23, 18:10 UTCMay 23, 20:20 UTC2h 10m
2026-05-23 TRA40B AMS → BCN May 23, 14:50 UTCMay 23, 16:55 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 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?
Yes. Mode-S 4841A9 is currently airborne.
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 TRA46G, TRA27L, TRA79X, TRA8B, TRA78T.