Apparatus

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sensors Mode-S transponder

A5C9B5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N472NA · BRITISH AEROSPACE 146-200 Quiet Trader · operated by NEPTUNE AVIATION SERVICES INC

Hex
A5C9B5
Octal
51344665
Decimal
10,865,077
Country
US
Tail
N472NA
Type
B462
No current signal · last broadcast Jul 26, 03:40 UTC
Flights observed
108
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 03:40 UTC

Last known position

Most recent position reported by Mode-S A5C9B5.

Country allocation

The ICAO 24-bit address A5C9B5 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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 1 distinct

Callsign Airline Flights Last seen
TKR10 - 108 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TKR10 - Jul 26, 03:10 UTCJul 26, 03:40 UTC30m
2026-07-26 TKR10 - Jul 26, 00:45 UTCJul 26, 02:30 UTC1h 45m
2026-07-25 TKR10 - Jul 25, 22:45 UTCJul 26, 00:15 UTC1h 30m
2026-07-25 TKR10 - Jul 25, 21:50 UTCJul 25, 22:10 UTC20m
2026-07-25 TKR10 - Jul 25, 18:50 UTCJul 25, 21:15 UTC2h 25m
2026-07-25 TKR10 - Jul 25, 17:55 UTCJul 25, 18:15 UTC20m
2026-07-25 TKR10 - Jul 25, 01:45 UTCJul 25, 02:50 UTC1h 5m
2026-07-24 TKR10 - Jul 24, 22:25 UTCJul 25, 01:05 UTC2h 40m
2026-07-24 TKR10 - Jul 24, 18:40 UTCJul 24, 21:50 UTC3h 10m
2026-07-24 TKR10 - Jul 24, 03:25 UTCJul 24, 03:50 UTC25m
2026-07-24 TKR10 RDM → RDM Jul 24, 02:25 UTCJul 24, 02:50 UTC25m
2026-07-23 TKR10 - Jul 23, 22:30 UTCJul 24, 01:40 UTC3h 10m
2026-07-23 TKR10 - Jul 23, 21:15 UTCJul 23, 21:55 UTC40m
2026-07-23 TKR10 - Jul 23, 19:45 UTCJul 23, 20:20 UTC35m
2026-07-23 TKR10 - Jul 23, 18:30 UTCJul 23, 19:05 UTC35m
2026-07-22 TKR10 - Jul 22, 21:30 UTCJul 22, 22:25 UTC55m
2026-07-22 TKR10 - Jul 22, 00:30 UTCJul 22, 00:55 UTC25m
2026-07-18 TKR10 - Jul 18, 22:05 UTCJul 19, 03:30 UTC5h 25m
2026-07-18 TKR10 - Jul 18, 18:20 UTCJul 18, 21:15 UTC2h 55m
2026-07-18 TKR10 - Jul 18, 02:55 UTCJul 18, 03:10 UTC15m
2026-07-18 TKR10 - Jul 18, 02:00 UTCJul 18, 02:19 UTC20m
2026-07-18 TKR10 - Jul 18, 00:15 UTCJul 18, 01:25 UTC1h 10m
2026-07-17 TKR10 - Jul 17, 21:10 UTCJul 17, 23:35 UTC2h 25m
2026-07-17 TKR10 - Jul 17, 03:14 UTCJul 17, 03:59 UTC45m
2026-07-17 TKR10 - Jul 17, 02:25 UTCJul 17, 02:39 UTC15m
2026-07-17 TKR10 - Jul 17, 01:20 UTCJul 17, 01:35 UTC15m
2026-07-17 TKR10 - Jul 17, 00:20 UTCJul 17, 00:40 UTC20m
2026-07-16 TKR10 - Jul 16, 23:29 UTCJul 16, 23:44 UTC15m
2026-07-16 TKR10 - Jul 16, 21:10 UTCJul 16, 22:45 UTC1h 35m
2026-07-16 TKR10 - Jul 16, 20:00 UTCJul 16, 20:35 UTC35m
2026-07-16 TKR10 - Jul 16, 18:55 UTCJul 16, 19:30 UTC35m
2026-07-16 TKR10 - Jul 16, 00:25 UTCJul 16, 01:10 UTC45m
2026-07-15 TKR10 - Jul 15, 23:00 UTCJul 15, 23:50 UTC50m
2026-07-15 TKR10 MFR → RDM Jul 15, 02:50 UTCJul 15, 03:30 UTC40m
2026-07-15 TKR10 - Jul 15, 02:15 UTCJul 15, 02:30 UTC15m
2026-07-15 TKR10 - Jul 15, 01:25 UTCJul 15, 01:40 UTC15m
2026-07-15 TKR10 - Jul 15, 00:15 UTCJul 15, 00:40 UTC25m
2026-07-11 TKR10 - Jul 11, 19:50 UTCJul 11, 20:15 UTC25m
2026-07-11 TKR10 - Jul 11, 03:40 UTCJul 11, 04:01 UTC20m
2026-07-11 TKR10 - Jul 11, 03:01 UTCJul 11, 03:15 UTC15m
2026-07-11 TKR10 - Jul 11, 01:35 UTCJul 11, 02:35 UTC1h 0m
2026-07-11 TKR10 MFR → MFR Jul 11, 00:25 UTCJul 11, 00:45 UTC20m
2026-07-10 TKR10 RDD → MFR Jul 10, 23:15 UTCJul 11, 00:00 UTC45m
2026-07-08 TKR10 - Jul 8, 22:20 UTCJul 8, 23:10 UTC50m
2026-07-08 TKR10 - Jul 8, 01:05 UTCJul 8, 02:35 UTC1h 30m
2026-07-08 TKR10 - Jul 8, 00:15 UTCJul 8, 00:45 UTC30m
2026-07-07 TKR10 - Jul 7, 22:45 UTCJul 7, 23:45 UTC1h 0m
2026-07-05 TKR10 - Jul 5, 02:45 UTCJul 5, 03:20 UTC35m
2026-07-04 TKR10 - Jul 4, 17:35 UTCJul 4, 18:10 UTC35m
2026-07-01 TKR10 - Jul 1, 23:35 UTCJul 2, 00:40 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 N472NA page for operator, model, and routing details .

Mode-S A5C9B5 frequently asked

What is Mode-S code A5C9B5?
A5C9B5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N472NA.
Where is Mode-S A5C9B5 registered?
Mode-S code A5C9B5 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A5C9B5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 03:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5C9B5, octal 51344665, decimal 10,865,077.
What flights does A5C9B5 operate?
Mode-S A5C9B5 has broadcast 1 distinct callsign, including TKR10.