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sensors Mode-S transponder

4CC571

ICAO 24-bit transponder address

Currently assigned to TF-HNH · BELL 407

Hex
4CC571
Octal
23142561
Decimal
5,031,281
Tail
TF-HNH
Type
B407
No current signal · last broadcast 1d ago
Flights observed
106
Distinct callsigns
1
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4CC571.

Callsign history 1 distinct

Callsign Airline Flights Last seen
TFHNH - 106 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 TFHNH - Jul 17, 14:04 UTCJul 17, 14:20 UTC15m
2026-07-17 TFHNH - Jul 17, 10:40 UTCJul 17, 10:50 UTC10m
2026-07-09 TFHNH - Jul 9, 17:40 UTCJul 9, 17:45 UTC5m
2026-07-09 TFHNH - Jul 9, 15:55 UTCJul 9, 16:05 UTC10m
2026-07-09 TFHNH - Jul 9, 10:45 UTCJul 9, 10:50 UTC5m
2026-07-06 TFHNH - Jul 6, 14:15 UTCJul 6, 15:10 UTC55m
2026-07-06 TFHNH - Jul 6, 08:00 UTCJul 6, 08:55 UTC55m
2026-07-05 TFHNH - Jul 5, 12:10 UTCJul 5, 13:20 UTC1h 10m
2026-07-05 TFHNH - Jul 5, 10:45 UTCJul 5, 11:00 UTC15m
2026-07-05 TFHNH - Jul 5, 09:35 UTCJul 5, 09:40 UTC5m
2026-07-01 TFHNH - Jul 1, 08:35 UTCJul 1, 08:55 UTC20m
2026-07-01 TFHNH - Jul 1, 07:25 UTCJul 1, 07:35 UTC10m
2026-06-30 TFHNH - Jun 30, 18:55 UTCJun 30, 19:05 UTC10m
2026-06-23 TFHNH - Jun 23, 13:00 UTCJun 23, 13:05 UTC5m
2026-06-23 TFHNH - Jun 23, 09:34 UTCJun 23, 09:40 UTC5m
2026-06-23 TFHNH - Jun 23, 08:35 UTCJun 23, 08:50 UTC15m
2026-06-21 TFHNH - Jun 21, 17:35 UTCJun 21, 18:29 UTC55m
2026-06-21 TFHNH - Jun 21, 16:19 UTCJun 21, 16:30 UTC10m
2026-06-21 TFHNH - Jun 21, 14:50 UTCJun 21, 15:30 UTC40m
2026-06-21 TFHNH - Jun 21, 10:19 UTCJun 21, 10:29 UTC10m
2026-06-20 TFHNH - Jun 20, 10:25 UTCJun 20, 11:14 UTC50m
2026-06-20 TFHNH - Jun 20, 09:14 UTCJun 20, 09:29 UTC15m
2026-06-19 TFHNH - Jun 19, 11:20 UTCJun 19, 11:24 UTC5m
2026-06-19 TFHNH - Jun 19, 09:09 UTCJun 19, 09:55 UTC45m
2026-06-19 TFHNH - Jun 19, 08:24 UTCJun 19, 08:34 UTC10m
2026-06-18 TFHNH - Jun 18, 13:00 UTCJun 18, 13:15 UTC15m
2026-06-18 TFHNH - Jun 18, 08:25 UTCJun 18, 08:40 UTC15m
2026-06-17 TFHNH - Jun 17, 17:20 UTCJun 17, 17:30 UTC10m
2026-06-17 TFHNH - Jun 17, 15:00 UTCJun 17, 15:15 UTC15m
2026-06-16 TFHNH - Jun 16, 18:20 UTCJun 16, 18:29 UTC10m
2026-06-16 TFHNH - Jun 16, 17:15 UTCJun 16, 18:05 UTC50m
2026-06-16 TFHNH - Jun 16, 16:10 UTCJun 16, 16:15 UTC5m
2026-06-16 TFHNH - Jun 16, 13:40 UTCJun 16, 13:50 UTC10m
2026-06-16 TFHNH - Jun 16, 10:55 UTCJun 16, 11:05 UTC10m
2026-06-16 TFHNH - Jun 16, 09:34 UTCJun 16, 09:50 UTC15m
2026-06-15 TFHNH - Jun 15, 19:55 UTCJun 15, 20:00 UTC5m
2026-06-15 TFHNH - Jun 15, 11:34 UTCJun 15, 11:45 UTC10m
2026-06-14 TFHNH - Jun 14, 21:15 UTCJun 14, 22:30 UTC1h 15m
2026-06-14 TFHNH RKV → KEF Jun 14, 19:50 UTCJun 14, 20:05 UTC15m
2026-06-14 TFHNH RKV → RKV Jun 14, 14:15 UTCJun 14, 14:50 UTC35m
2026-06-13 TFHNH - Jun 13, 19:00 UTCJun 13, 19:10 UTC10m
2026-06-13 TFHNH - Jun 13, 14:25 UTCJun 13, 14:40 UTC15m
2026-06-13 TFHNH KEF → RKV Jun 13, 13:40 UTCJun 13, 14:00 UTC20m
2026-06-13 TFHNH - Jun 13, 12:20 UTCJun 13, 12:30 UTC10m
2026-06-12 TFHNH - Jun 12, 20:45 UTCJun 12, 21:00 UTC15m
2026-06-12 TFHNH - Jun 12, 16:40 UTCJun 12, 16:55 UTC15m
2026-06-11 TFHNH - Jun 11, 17:10 UTCJun 11, 17:35 UTC25m
2026-06-11 TFHNH RKV → KEF Jun 11, 12:55 UTCJun 11, 13:10 UTC15m
2026-06-11 TFHNH - Jun 11, 11:40 UTCJun 11, 12:25 UTC45m
2026-06-11 TFHNH RKV → RKV Jun 11, 10:20 UTCJun 11, 11:25 UTC1h 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 TF-HNH page for operator, model, and routing details .

Mode-S 4CC571 frequently asked

What is Mode-S code 4CC571?
4CC571 is an ICAO 24-bit transponder address. Assigned to TF-HNH.
Is 4CC571 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC571, octal 23142561, decimal 5,031,281.
What flights does 4CC571 operate?
Mode-S 4CC571 has broadcast 1 distinct callsign, including TFHNH.