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sensors Mode-S transponder

3C664D

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIRM · AIRBUS A-321

Hex
3C664D
Octal
17063115
Decimal
3,958,349
Country
DE
Tail
D-AIRM
Type
A321
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
473
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 3C664D.

Country allocation

The ICAO 24-bit address 3C664D 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
DLH982 Lufthansa 6 2026-07-26
DLH9PL - 5 2026-07-07
DLH81H - 5 2026-07-10
DLH71X - 5 2026-07-05
DLH67K - 5 2026-07-13
DLH4LM Lufthansa 5 2026-07-24
DLH4LC Lufthansa 5 2026-07-23
DLH3MA Lufthansa 5 2026-07-24
DLH1RF Lufthansa 5 2026-07-23
DLH885 Lufthansa 4 2026-07-23
DLH884 - 4 2026-07-22
DLH4AR Lufthansa 4 2026-06-10
DLH3EV - 4 2026-06-18
DLH309 Lufthansa 4 2026-06-10
DLH21X - 4 2026-07-05
DLH179 - 4 2026-06-18
DLH9ML Lufthansa 3 2026-05-26
DLH9FW - 3 2026-07-20
DLH9EJ Lufthansa 3 2026-07-20
DLH99F - 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH982 FRA → DUB Jul 26, 19:20 UTCJul 26, 21:10 UTC1h 50m
2026-07-25 DLH007 HAM → FRA Jul 25, 08:10 UTCJul 25, 09:10 UTC1h 0m
2026-07-25 DLH4EF LHR → MUC Jul 25, 06:15 UTCJul 25, 07:00 UTC45m
2026-07-25 DLH7P PRG → FRA Jul 25, 04:10 UTCJul 25, 05:05 UTC55m
2026-07-24 DLH5XY ARN → FRA Jul 24, 20:50 UTCJul 24, 21:30 UTC40m
2026-07-24 DLH3MA FRA → CPH Jul 24, 16:05 UTCJul 24, 18:45 UTC2h 40m
2026-07-24 DLH4LM FRA → ATH Jul 24, 12:45 UTCJul 24, 14:55 UTC2h 10m
2026-07-24 DLH4P PRG → FRA Jul 24, 09:55 UTCJul 24, 10:35 UTC40m
2026-07-24 DLH6JT FRA → NCL Jul 24, 08:10 UTCJul 24, 08:55 UTC45m
2026-07-24 DLH243 FCO → FRA Jul 24, 05:05 UTCJul 24, 06:40 UTC1h 35m
2026-07-23 DLH8HX FRA → GOT Jul 23, 19:50 UTCJul 23, 21:05 UTC1h 15m
2026-07-23 DLH44K PMI → FRA Jul 23, 16:35 UTCJul 23, 18:45 UTC2h 10m
2026-07-23 DLH14C FRA → MAD Jul 23, 13:05 UTCJul 23, 15:05 UTC2h 0m
2026-07-23 DLH1RF MUC → FRA Jul 23, 10:15 UTCJul 23, 10:50 UTC35m
2026-07-23 DLH4LC FRA → HAM Jul 23, 08:30 UTCJul 23, 09:05 UTC35m
2026-07-23 DLH885 TLL → FRA Jul 23, 03:10 UTCJul 23, 05:00 UTC1h 50m
2026-07-22 DLH884 - Jul 22, 19:35 UTCJul 22, 21:40 UTC2h 5m
2026-07-22 DLH7A AMS → FRA Jul 22, 17:10 UTCJul 22, 17:55 UTC45m
2026-07-22 DLH3CT FRA → AMS Jul 22, 14:55 UTCJul 22, 15:50 UTC55m
2026-07-22 DLH43U - Jul 22, 11:30 UTCJul 22, 13:45 UTC2h 15m
2026-07-22 DLH82V FRA → OPO Jul 22, 10:20 UTCJul 22, 11:25 UTC1h 5m
2026-07-20 DLH2LC FRA → GDN Jul 20, 18:50 UTCJul 20, 20:25 UTC1h 35m
2026-07-20 DLH336 - Jul 20, 15:45 UTCJul 20, 17:10 UTC1h 25m
2026-07-20 DLH9EJ TOS → FRA Jul 20, 12:20 UTCJul 20, 14:25 UTC2h 5m
2026-07-20 DLH5MV - Jul 20, 09:05 UTCJul 20, 10:55 UTC1h 50m
2026-07-20 DLH9FW MUC → FRA Jul 20, 05:45 UTCJul 20, 06:20 UTC35m
2026-07-19 DLH7EC MUC → DUS Jul 19, 18:50 UTCJul 19, 19:20 UTC30m
2026-07-19 DLH2XC BER → FRA Jul 19, 16:30 UTCJul 19, 17:15 UTC45m
2026-07-19 DLH192 FRA → BER Jul 19, 14:00 UTCJul 19, 14:50 UTC50m
2026-07-19 DLH895 VNO → FRA Jul 19, 10:45 UTCJul 19, 12:35 UTC1h 50m
2026-07-19 DLH894 FRA → SVG Jul 19, 08:05 UTCJul 19, 09:45 UTC1h 40m
2026-07-18 DLH8VY - Jul 18, 19:20 UTCJul 18, 20:45 UTC1h 25m
2026-07-18 DLH1LA - Jul 18, 17:00 UTCJul 18, 18:10 UTC1h 10m
2026-07-18 DLH37W - Jul 18, 11:45 UTCJul 18, 13:40 UTC1h 55m
2026-07-18 DLH02F FRA → MAD Jul 18, 08:10 UTCJul 18, 10:20 UTC2h 10m
2026-07-18 DLH885 - Jul 18, 03:20 UTCJul 18, 05:30 UTC2h 10m
2026-07-17 DLH884 FRA → TLL Jul 17, 19:35 UTCJul 17, 21:25 UTC1h 50m
2026-07-17 DLH7A - Jul 17, 17:35 UTCJul 17, 18:19 UTC45m
2026-07-17 DLH3CT FRA → AMS Jul 17, 15:29 UTCJul 17, 16:15 UTC45m
2026-07-17 DLH1299 - Jul 17, 11:35 UTCJul 17, 14:04 UTC2h 30m
2026-07-17 DLH1298 - Jul 17, 07:40 UTCJul 17, 10:00 UTC2h 20m
2026-07-17 DLH1JT - Jul 17, 03:39 UTCJul 17, 05:45 UTC2h 5m
2026-07-16 DLH1UT FRA → SOF Jul 16, 18:15 UTCJul 16, 20:15 UTC2h 0m
2026-07-16 DLH37W - Jul 16, 12:00 UTCJul 16, 13:49 UTC1h 50m
2026-07-16 DLH02F FRA → MAD Jul 16, 08:10 UTCJul 16, 10:25 UTC2h 15m
2026-07-16 DLH333 VCE → FRA Jul 16, 04:55 UTCJul 16, 06:05 UTC1h 10m
2026-07-15 DLH1RH - Jul 15, 19:55 UTCJul 15, 20:55 UTC1h 0m
2026-07-15 DLH44K - Jul 15, 15:35 UTCJul 15, 17:30 UTC1h 55m
2026-07-15 DLH14C FRA → MAD Jul 15, 11:50 UTCJul 15, 14:00 UTC2h 10m
2026-07-15 DLH7VV - Jul 15, 09:20 UTCJul 15, 10:20 UTC1h 0m

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-AIRM page for operator, model, and routing details .

Mode-S 3C664D frequently asked

What is Mode-S code 3C664D?
3C664D is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIRM.
Where is Mode-S 3C664D registered?
Mode-S code 3C664D is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C664D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C664D, octal 17063115, decimal 3,958,349.
What flights does 3C664D operate?
Mode-S 3C664D has broadcast 20 distinct callsigns, including DLH982, DLH9PL, DLH81H, DLH71X, DLH67K.