Apparatus

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sensors Mode-S transponder

A4959A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N395CM · BOEING 767-300 · operated by CARGO AIRCRAFT MANAGEMENT INC

Hex
A4959A
Octal
51112632
Decimal
10,786,202
Country
US
Tail
N395CM
Type
B763
No current signal · last broadcast 6h ago
Flights observed
147
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A4959A.

Country allocation

The ICAO 24-bit address A4959A 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 20 distinct

Callsign Airline Flights Last seen
ATN311 - 31 2026-07-13
ATN312 - 19 2026-07-14
ATN219 Air Transport International 4 2026-06-05
ATN3341 Air Transport International 3 2026-06-09
ATN222 - 3 2026-07-04
ATN221 - 3 2026-07-02
ATN220 Air Transport International 3 2026-06-07
ATN208 Air Transport International 3 2026-04-30
ATN3493 Air Transport International 2 2026-05-26
ATN3450 Air Transport International 2 2026-04-16
ATN3425 Air Transport International 2 2026-04-14
ATN3388 - 2 2026-06-26
ATN3368 Air Transport International 2 2026-05-25
ATN3349 Air Transport International 2 2026-05-23
ATN3333 - 2 2026-04-13
ATN3323 Air Transport International 2 2026-04-17
ATN3319 - 2 2026-04-14
ATN3318 Air Transport International 2 2026-04-16
ATN226 - 2 2026-07-08
ATN225 - 2 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ATN312 - Jul 14, 00:45 UTCJul 14, 01:05 UTC20m
2026-07-13 ATN311 OKO → DNA Jul 13, 08:55 UTCJul 13, 10:50 UTC1h 55m
2026-07-12 ATN311 - Jul 12, 20:10 UTCJul 12, 21:25 UTC1h 15m
2026-07-12 ATN311 - Jul 12, 04:01 UTCJul 12, 08:55 UTC4h 55m
2026-07-11 ATN311 - Jul 11, 20:35 UTCJul 12, 00:55 UTC4h 20m
2026-07-08 ATN226 - Jul 8, 15:40 UTCJul 8, 15:55 UTC15m
2026-07-08 ATN226 - Jul 8, 06:35 UTCJul 8, 15:00 UTC8h 25m
2026-07-07 ATN225 - Jul 7, 02:10 UTCJul 7, 09:45 UTC7h 35m
2026-07-06 ATN225 - Jul 6, 11:25 UTCJul 6, 12:00 UTC35m
2026-07-04 ATN222 - Jul 4, 19:40 UTCJul 4, 23:50 UTC4h 10m
2026-07-04 ATN222 - Jul 4, 12:20 UTCJul 4, 16:45 UTC4h 25m
2026-07-03 ATN222 - Jul 3, 23:55 UTCJul 4, 08:45 UTC8h 50m
2026-07-02 ATN221 - Jul 2, 14:40 UTCJul 3, 00:05 UTC9h 25m
2026-07-02 ATN221 - Jul 2, 10:55 UTCJul 2, 11:15 UTC20m
2026-07-02 ATN221 - Jul 2, 06:25 UTCJul 2, 07:00 UTC35m
2026-07-01 ATN312 SUU → ILN Jul 1, 12:30 UTCJul 1, 17:10 UTC4h 40m
2026-07-01 ATN312 SUU → ILN Jul 1, 08:30 UTCJul 1, 08:55 UTC25m
2026-06-30 ATN311 - Jun 30, 08:40 UTCJun 30, 09:25 UTC45m
2026-06-28 ATN311 SUU → HNL Jun 28, 13:14 UTCJun 28, 21:30 UTC8h 15m
2026-06-28 ATN311 SUU → HNL Jun 28, 03:25 UTCJun 28, 08:19 UTC4h 55m
2026-06-27 ATN311 SUU → HNL Jun 27, 19:09 UTCJun 27, 23:55 UTC4h 45m
2026-06-26 ATN3343 - Jun 26, 18:39 UTCJun 26, 20:40 UTC2h 0m
2026-06-26 ATN3388 - Jun 26, 11:30 UTCJun 26, 14:15 UTC2h 45m
2026-06-26 ATN3330 - Jun 26, 05:10 UTCJun 26, 09:30 UTC4h 20m
2026-06-16 ATN312 SUU → ILN Jun 16, 19:05 UTCJun 16, 23:10 UTC4h 6m
2026-06-16 ATN312 SUU → ILN Jun 16, 12:00 UTCJun 16, 17:00 UTC5h 0m
2026-06-16 ATN312 SUU → ILN Jun 16, 02:34 UTCJun 16, 09:34 UTC7h 0m
2026-06-15 ATN311 SUU → HNL Jun 15, 09:10 UTCJun 16, 02:34 UTC17h 25m
2026-06-14 ATN311 SUU → HNL Jun 14, 12:35 UTCJun 14, 21:15 UTC8h 40m
2026-06-14 ATN311 SUU → HNL Jun 14, 06:40 UTCJun 14, 06:55 UTC15m
2026-06-14 ATN311 SUU → HNL Jun 14, 02:05 UTCJun 14, 02:50 UTC45m
2026-06-13 ATN311 SUU → HNL Jun 13, 19:00 UTCJun 13, 23:45 UTC4h 45m
2026-06-13 ATN224 - Jun 13, 15:35 UTCJun 13, 16:05 UTC30m
2026-06-12 ATN224 - Jun 12, 11:40 UTCJun 12, 20:25 UTC8h 45m
2026-06-11 ATN395 - Jun 11, 23:05 UTCJun 12, 06:25 UTC7h 21m
2026-06-10 ATN3895 BDL → ILN Jun 10, 23:10 UTCJun 11, 00:35 UTC1h 25m
2026-06-09 ATN3341 BDL → CVG Jun 9, 01:15 UTCJun 9, 03:45 UTC2h 30m
2026-06-08 ATN3386 SBD → AUS Jun 8, 19:10 UTCJun 8, 21:10 UTC2h 0m
2026-06-08 ATN4308 CVG → SCK Jun 8, 05:00 UTCJun 8, 06:00 UTC1h 0m
2026-06-07 ATN220 CVG → ILN Jun 7, 05:20 UTCJun 7, 06:15 UTC55m
2026-06-06 ATN220 CVG → ILN Jun 6, 19:19 UTCJun 7, 03:50 UTC8h 30m
2026-06-06 ATN220 CVG → ILN Jun 6, 09:55 UTCJun 6, 17:05 UTC7h 10m
2026-06-05 ATN219 RIC → EIN Jun 5, 18:40 UTCJun 5, 19:10 UTC30m
2026-06-05 ATN219 RIC → EIN Jun 5, 12:50 UTCJun 5, 16:35 UTC3h 45m
2026-06-05 ATN219 RIC → EIN Jun 5, 03:25 UTCJun 5, 10:40 UTC7h 15m
2026-06-04 ATN219 RIC → EIN Jun 4, 23:25 UTCJun 5, 00:15 UTC50m
2026-06-04 ATN312 SUU → ILN Jun 4, 00:50 UTCJun 4, 04:50 UTC4h 0m
2026-06-03 ATN312 SUU → ILN Jun 3, 18:05 UTCJun 3, 23:00 UTC4h 55m
2026-06-03 ATN312 SUU → ILN Jun 3, 07:35 UTCJun 3, 14:30 UTC6h 55m
2026-06-01 ATN311 SUU → HNL Jun 1, 12:45 UTCJun 1, 21:05 UTC8h 20m

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 N395CM page for operator, model, and routing details .

Mode-S A4959A frequently asked

What is Mode-S code A4959A?
A4959A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N395CM.
Where is Mode-S A4959A registered?
Mode-S code A4959A 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 A4959A broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4959A, octal 51112632, decimal 10,786,202.
What flights does A4959A operate?
Mode-S A4959A has broadcast 20 distinct callsigns, including ATN311, ATN312, ATN219, ATN3341, ATN222.