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 TRA27L · 28,175 ft
Flights observed
397
Distinct callsigns
20
Country
NL
Last broadcast
2h 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
TRA27L Transavia Holland 8 2026-07-18
TRA80E - 7 2026-07-09
TRA78T - 7 2026-07-17
TRA73V - 7 2026-07-17
TRA46G Transavia Holland 7 2026-06-07
TRA11L - 7 2026-07-09
TRA8B Transavia Holland 6 2026-06-20
TRA79X - 6 2026-06-20
TRA6513 Transavia Holland 5 2026-07-08
TRA5Y - 5 2026-07-06
TRA30Q - 5 2026-07-06
TRA17H - 5 2026-07-16
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
TRA5C - 4 2026-07-16
TRA5862 Transavia Holland 4 2026-06-23
TRA5276 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 TRA27L EIN → LIS Jul 18, 05:55 UTCJul 18, 06:15 UTC20m
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
2026-07-16 TRA69Z - Jul 16, 07:55 UTCJul 16, 10:25 UTC2h 30m
2026-07-16 TRA39E AMS → FAO Jul 16, 04:10 UTCJul 16, 07:00 UTC2h 50m
2026-07-15 TRA45Y BCN → AMS Jul 15, 19:55 UTCJul 15, 21:45 UTC1h 50m
2026-07-15 TRA6Y RTM → BCN Jul 15, 16:50 UTCJul 15, 18:30 UTC1h 40m
2026-07-15 TRA62U BCN → RTM Jul 15, 14:00 UTCJul 15, 15:40 UTC1h 40m
2026-07-15 TRA3T - Jul 15, 10:40 UTCJul 15, 12:30 UTC1h 50m
2026-07-15 TRA2X - Jul 15, 07:05 UTCJul 15, 09:00 UTC1h 55m
2026-07-15 TRA4Q - Jul 15, 03:50 UTCJul 15, 06:00 UTC2h 10m
2026-07-14 TRA44B BRI → AMS Jul 14, 06:40 UTCJul 14, 09:00 UTC2h 20m
2026-07-14 TRA21H - Jul 14, 03:30 UTCJul 14, 05:35 UTC2h 5m
2026-07-13 TRA6342 - Jul 13, 20:30 UTCJul 13, 22:35 UTC2h 5m
2026-07-13 TRA341M - Jul 13, 17:10 UTCJul 13, 19:25 UTC2h 15m
2026-07-12 TRA23H - Jul 12, 13:45 UTCJul 12, 15:45 UTC2h 0m
2026-07-12 TRA80H - Jul 12, 10:30 UTCJul 12, 12:35 UTC2h 5m
2026-07-12 TRA76Z - Jul 12, 06:40 UTCJul 12, 08:50 UTC2h 10m
2026-07-12 TRA15A AMS → ALC Jul 12, 03:20 UTCJul 12, 05:45 UTC2h 25m
2026-07-11 TRA56N OLB → AMS Jul 11, 20:30 UTCJul 11, 22:25 UTC1h 55m
2026-07-11 TRA9X - Jul 11, 17:40 UTCJul 11, 19:30 UTC1h 50m
2026-07-11 TRA65A IBZ → EIN Jul 11, 13:20 UTCJul 11, 15:25 UTC2h 5m
2026-07-11 TRA15W - Jul 11, 10:05 UTCJul 11, 12:10 UTC2h 5m
2026-07-11 TRA5962 CPH → EIN Jul 11, 07:05 UTCJul 11, 08:05 UTC1h 0m
2026-07-11 TRA9M - Jul 11, 05:05 UTCJul 11, 06:10 UTC1h 5m
2026-07-10 TRA5E FAO → EIN Jul 10, 17:25 UTCJul 10, 19:55 UTC2h 30m
2026-07-10 TRA50L - Jul 10, 13:50 UTCJul 10, 16:25 UTC2h 35m
2026-07-10 TRA7E - Jul 10, 09:35 UTCJul 10, 12:00 UTC2h 25m
2026-07-10 TRA3N - Jul 10, 05:50 UTCJul 10, 08:20 UTC2h 30m
2026-07-09 TRA5C VLC → EIN Jul 9, 19:10 UTCJul 9, 21:05 UTC1h 55m
2026-07-09 TRA17H - Jul 9, 16:00 UTCJul 9, 18:00 UTC2h 0m
2026-07-09 TRA34P AMS → BRI Jul 9, 13:25 UTCJul 9, 14:25 UTC1h 0m
2026-07-09 TRA33T - Jul 9, 11:25 UTCJul 9, 12:25 UTC1h 0m
2026-07-09 TRA80E - Jul 9, 08:30 UTCJul 9, 10:30 UTC2h 0m
2026-07-09 TRA11L - Jul 9, 05:30 UTCJul 9, 07:15 UTC1h 45m
2026-07-08 TRA6708 ATH → EIN Jul 8, 16:50 UTCJul 8, 19:55 UTC3h 5m
2026-07-08 TRA5R - Jul 8, 13:05 UTCJul 8, 15:50 UTC2h 45m
2026-07-08 TRA14E IBZ → EIN Jul 8, 08:10 UTCJul 8, 10:20 UTC2h 10m
2026-07-08 TRA6513 EIN → IBZ Jul 8, 05:05 UTCJul 8, 07:00 UTC1h 55m
2026-07-07 TRA6710 ATH → EIN Jul 7, 17:10 UTCJul 7, 20:05 UTC2h 55m
2026-07-07 TRA6709 - Jul 7, 13:25 UTCJul 7, 15:55 UTC2h 30m
2026-07-07 TRA20Y - Jul 7, 08:30 UTCJul 7, 10:45 UTC2h 15m

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 TRA27L, TRA80E, TRA78T, TRA73V, TRA46G.