Apparatus

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sensors Mode-S transponder

3C6637

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIQW · AIRBUS A-320

Hex
3C6637
Octal
17063067
Decimal
3,958,327
Country
DE
Tail
D-AIQW
Type
A320
Broadcasting now · callsign DLH54J · 33,975 ft
Flights observed
235
Distinct callsigns
20
Country
DE
Last broadcast
7h ago

Current position

3C6637 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C6637 falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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
DLH830 Lufthansa 4 2026-05-25
DLH4WF Lufthansa 4 2026-05-31
DLH3HT Lufthansa 4 2026-05-25
DLH1RJ Lufthansa 4 2026-05-31
DLH9AV Lufthansa 3 2026-05-23
DLH7XP Lufthansa 3 2026-05-23
DLH19E Lufthansa 3 2026-06-02
DLH175 Lufthansa 3 2026-05-24
DLH174 Lufthansa 3 2026-05-24
DLH9XK Lufthansa 2 2026-05-09
DLH9WT Lufthansa 2 2026-05-15
DLH9K Lufthansa 2 2026-05-13
DLH963 Lufthansa 2 2026-05-19
DLH8CT Lufthansa 2 2026-05-24
DLH883 Lufthansa 2 2026-05-08
DLH882 Lufthansa 2 2026-05-08
DLH7YA Lufthansa 2 2026-05-06
DLH7KH Lufthansa 2 2026-05-29
DLH7JW Lufthansa 2 2026-05-07
DLH6VX Lufthansa 2 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 DLH19E FRA → LYS Jun 2, 20:40 UTCJun 2, 21:40 UTC1h 0m
2026-06-02 DLH6UL HAM → FRA Jun 2, 18:00 UTCJun 2, 19:20 UTC1h 20m
2026-06-02 DLH6HE FRA → BUD Jun 2, 15:55 UTCJun 2, 17:05 UTC1h 10m
2026-06-02 DLH8FL HEL → FRA Jun 2, 11:40 UTCJun 2, 13:25 UTC1h 45m
2026-06-02 DLH7WJ MUC → TOS Jun 2, 09:10 UTCJun 2, 10:45 UTC1h 35m
2026-06-02 DLH5A AMS → FRA Jun 2, 06:10 UTCJun 2, 06:50 UTC40m
2026-06-01 DLH2HK FRA → AMS Jun 1, 19:20 UTCJun 1, 20:05 UTC45m
2026-06-01 DLH6UP FRA → HAJ Jun 1, 11:55 UTCJun 1, 14:25 UTC2h 30m
2026-06-01 DLH4PP LHR → MUC Jun 1, 07:50 UTCJun 1, 10:25 UTC2h 35m
2026-06-01 DLH54J LYS → FRA Jun 1, 05:05 UTCJun 1, 06:10 UTC1h 5m
2026-05-31 DLH19E FRA → LYS May 31, 21:00 UTCMay 31, 22:00 UTC1h 0m
2026-05-31 DLH1RJ WAW → FRA May 31, 14:00 UTCMay 31, 15:25 UTC1h 25m
2026-05-31 DLH4WF FRA → ATH May 31, 11:15 UTCMay 31, 12:50 UTC1h 35m
2026-05-29 DLH5AA FRA → HAJ May 29, 18:10 UTCMay 29, 19:30 UTC1h 20m
2026-05-29 DLH7KH FRA → LHR May 29, 14:20 UTCMay 29, 15:40 UTC1h 20m
2026-05-29 DLH2XV EDI → FRA May 29, 10:35 UTCMay 29, 11:40 UTC1h 5m
2026-05-29 DLH2EP FRA → CPH May 29, 08:30 UTCMay 29, 09:35 UTC1h 5m
2026-05-29 DLH3C ZRH → FRA May 29, 06:25 UTCMay 29, 07:05 UTC40m
2026-05-29 DLH8YY KRK → FRA May 29, 04:40 UTCMay 29, 05:10 UTC30m
2026-05-28 DLH7MN CTA → MUC May 28, 17:00 UTCMay 28, 18:05 UTC1h 5m
2026-05-28 DLH9CH DUB → FRA May 28, 15:10 UTCMay 28, 16:00 UTC50m
2026-05-28 DLH967 NCL → FRA May 28, 11:05 UTCMay 28, 12:25 UTC1h 20m
2026-05-28 DLH966 FRA → NCL May 28, 08:40 UTCMay 28, 10:05 UTC1h 25m
2026-05-28 DLH4Y BRU → FRA May 28, 06:40 UTCMay 28, 07:20 UTC40m
2026-05-28 DLH4NE HAM → FRA May 28, 04:55 UTCMay 28, 05:35 UTC40m
2026-05-27 DLH05E FRA → PMI May 27, 16:00 UTCMay 27, 18:10 UTC2h 10m
2026-05-27 DLH83T FRA → BIO May 27, 12:20 UTCMay 27, 14:45 UTC2h 25m
2026-05-27 DLH9JT JTR → MUC May 27, 09:05 UTCMay 27, 10:40 UTC1h 35m
2026-05-27 DLH972 FRA → BRS May 27, 06:20 UTCMay 27, 08:05 UTC1h 46m
2026-05-27 DLH7P PRG → FRA May 27, 04:14 UTCMay 27, 05:04 UTC50m
2026-05-26 DLH5XY ARN → FRA May 26, 20:20 UTCMay 26, 21:00 UTC40m
2026-05-26 DLH21X FRA → NCE May 26, 17:25 UTCMay 26, 18:30 UTC1h 5m
2026-05-26 DLH71X FRA → TLS May 26, 15:14 UTCMay 26, 16:24 UTC1h 10m
2026-05-26 DLH1RJ WAW → FRA May 26, 12:00 UTCMay 26, 13:29 UTC1h 30m
2026-05-26 DLH4WF FRA → ATH May 26, 09:35 UTCMay 26, 11:05 UTC1h 30m
2026-05-26 DLH6P PRG → FRA May 26, 07:24 UTCMay 26, 08:15 UTC50m
2026-05-26 DLH8RX FRA → EDI May 26, 05:45 UTCMay 26, 06:29 UTC45m
2026-05-25 DLH3HT HAM → FRA May 25, 17:00 UTCMay 25, 18:10 UTC1h 10m
2026-05-25 DLH830 FRA → CPH May 25, 14:55 UTCMay 25, 16:00 UTC1h 5m
2026-05-25 DLH9EJ TOS → FRA May 25, 11:05 UTCMay 25, 13:10 UTC2h 5m
2026-05-25 DLH5MV FRA → GOT May 25, 08:00 UTCMay 25, 10:00 UTC2h 0m
2026-05-25 DLH949 MAN → FRA May 25, 05:15 UTCMay 25, 06:30 UTC1h 15m
2026-05-24 DLH2FT FRA → GLA May 24, 20:30 UTCMay 24, 21:45 UTC1h 15m
2026-05-24 DLH8CT MUC → FRA May 24, 17:25 UTCMay 24, 18:40 UTC1h 15m
2026-05-24 DLH5EF BER → FRA May 24, 15:10 UTCMay 24, 16:30 UTC1h 20m
2026-05-24 DLH6KA MUC → BUD May 24, 12:25 UTCMay 24, 13:40 UTC1h 15m
2026-05-24 DLH3UX FCO → FRA May 24, 10:10 UTCMay 24, 11:25 UTC1h 15m
2026-05-24 DLH175 BER → FRA May 24, 07:50 UTCMay 24, 08:40 UTC50m
2026-05-24 DLH174 FRA → BER May 24, 05:55 UTCMay 24, 06:40 UTC45m
2026-05-23 DLH5MR MUC → FRA May 23, 19:40 UTCMay 23, 20:20 UTC40m

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 D-AIQW page for operator, model, and routing details .

Mode-S 3C6637 frequently asked

What is Mode-S code 3C6637?
3C6637 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIQW.
Where is Mode-S 3C6637 registered?
Mode-S code 3C6637 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6637 broadcasting right now?
Yes. Mode-S 3C6637 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C6637, octal 17063067, decimal 3,958,327.
What flights does 3C6637 operate?
Mode-S 3C6637 has broadcast 20 distinct callsigns, including DLH830, DLH4WF, DLH3HT, DLH1RJ, DLH9AV.