Apparatus

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sensors Mode-S transponder

A06DC9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N127AX · BEECH 1900 · operated by ALASKA CENTRAL EXPRESS INC

Hex
A06DC9
Octal
50066711
Decimal
10,513,865
Country
US
Tail
N127AX
Type
B190
No current signal · last broadcast 15d ago
Flights observed
64
Distinct callsigns
15
Country
US
Last broadcast
15d ago

Last known position

Most recent position reported by Mode-S A06DC9.

Country allocation

The ICAO 24-bit address A06DC9 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 15 distinct

Callsign Airline Flights Last seen
AER42 Alaska Central Express 18 2026-05-09
AER145 Alaska Central Express 9 2026-05-14
AER31 Alaska Central Express 8 2026-05-01
AER32 Alaska Central Express 6 2026-04-17
AER711 Alaska Central Express 4 2026-05-07
AER146 Alaska Central Express 3 2026-04-22
AERT8 - 2 2026-04-25
AER714 Alaska Central Express 2 2026-05-08
AER55 Alaska Central Express 2 2026-04-19
AER52 Alaska Central Express 2 2026-04-21
AER35 Alaska Central Express 2 2026-05-01
AER144 Alaska Central Express 2 2026-05-08
AERT5 - 1 2026-05-07
AER53 Alaska Central Express 1 2026-04-18
AER44 Alaska Central Express 1 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-14 AER145 ANC → ADQ May 14, 14:40 UTCMay 14, 15:35 UTC55m
2026-05-14 AER145 ANC → ADQ May 14, 12:35 UTCMay 14, 13:45 UTC1h 10m
2026-05-13 AER145 ANC → ADQ May 13, 14:45 UTCMay 13, 15:40 UTC55m
2026-05-13 AER145 ANC → ADQ May 13, 12:55 UTCMay 13, 14:05 UTC1h 10m
2026-05-12 AER145 ANC → ADQ May 12, 14:35 UTCMay 12, 16:45 UTC2h 10m
2026-05-11 AER145 ANC → ADQ May 11, 15:30 UTCMay 11, 16:20 UTC50m
2026-05-11 AER145 ANC → ADQ May 11, 13:40 UTCMay 11, 14:50 UTC1h 10m
2026-05-09 AER42 ANC → YAK May 9, 17:25 UTCMay 9, 18:10 UTC45m
2026-05-09 AER42 ANC → YAK May 9, 16:25 UTCMay 9, 16:50 UTC25m
2026-05-09 AER42 ANC → YAK May 9, 13:35 UTCMay 9, 14:50 UTC1h 15m
2026-05-08 AER714 ANC → ADQ May 8, 18:30 UTCMay 8, 19:30 UTC1h 0m
2026-05-08 AER714 ANC → ADQ May 8, 16:45 UTCMay 8, 18:00 UTC1h 15m
2026-05-08 AER144 ANC → ADQ May 8, 13:50 UTCMay 8, 14:45 UTC55m
2026-05-08 AER144 ANC → ADQ May 8, 11:49 UTCMay 8, 13:00 UTC1h 10m
2026-05-07 AER711 ANC → FAI May 7, 18:55 UTCMay 7, 20:00 UTC1h 5m
2026-05-07 AER711 ANC → FAI May 7, 17:25 UTCMay 7, 18:25 UTC1h 0m
2026-05-07 AERT5 ANC → ANC May 7, 03:45 UTCMay 7, 03:55 UTC10m
2026-05-02 AER145 ANC → ADQ May 2, 14:05 UTCMay 2, 15:05 UTC1h 0m
2026-05-02 AER145 ANC → ADQ May 2, 12:00 UTCMay 2, 13:20 UTC1h 20m
2026-05-01 AER35 ANC → ILI May 1, 21:10 UTCMay 1, 21:45 UTC35m
2026-05-01 AER35 ANC → ILI May 1, 19:10 UTCMay 1, 20:10 UTC1h 0m
2026-05-01 AER31 AKN → ANC May 1, 16:45 UTCMay 1, 17:45 UTC1h 0m
2026-05-01 AER31 AKN → ANC May 1, 14:45 UTCMay 1, 16:10 UTC1h 25m
2026-05-01 - - May 1, 13:00 UTCMay 1, 13:10 UTC10m
2026-04-30 AER711 ANC → FAI Apr 30, 18:35 UTCApr 30, 19:40 UTC1h 5m
2026-04-30 AER711 ANC → FAI Apr 30, 17:10 UTCApr 30, 18:05 UTC55m
2026-04-27 AER42 ANC → YAK Apr 27, 16:05 UTCApr 27, 16:50 UTC45m
2026-04-27 AER42 ANC → YAK Apr 27, 15:10 UTCApr 27, 15:35 UTC25m
2026-04-27 AER42 ANC → YAK Apr 27, 12:55 UTCApr 27, 14:00 UTC1h 5m
2026-04-25 AERT8 - Apr 25, 22:25 UTCApr 25, 23:25 UTC1h 0m
2026-04-25 AERT8 ANC → ENA Apr 25, 22:00 UTCApr 25, 22:20 UTC20m
2026-04-23 AER42 ANC → YAK Apr 23, 16:05 UTCApr 23, 16:50 UTC45m
2026-04-23 AER42 ANC → YAK Apr 23, 15:00 UTCApr 23, 15:35 UTC35m
2026-04-23 AER42 ANC → YAK Apr 23, 12:50 UTCApr 23, 14:00 UTC1h 10m
2026-04-22 AER146 ANC → ILI Apr 22, 21:45 UTCApr 22, 22:20 UTC35m
2026-04-22 AER146 ANC → ILI Apr 22, 20:30 UTCApr 22, 21:00 UTC30m
2026-04-22 AER146 ANC → ILI Apr 22, 18:50 UTCApr 22, 20:00 UTC1h 10m
2026-04-22 AER31 AKN → ANC Apr 22, 15:15 UTCApr 22, 17:15 UTC2h 0m
2026-04-22 AER31 AKN → ANC Apr 22, 13:15 UTCApr 22, 14:35 UTC1h 20m
2026-04-21 AER52 ANC → DLG Apr 21, 17:20 UTCApr 21, 18:25 UTC1h 5m
2026-04-21 AER52 ANC → DLG Apr 21, 14:55 UTCApr 21, 16:35 UTC1h 40m
2026-04-19 AER55 ANC → DLG Apr 19, 00:50 UTCApr 19, 01:50 UTC1h 0m
2026-04-18 AER55 ANC → DLG Apr 18, 22:30 UTCApr 18, 23:55 UTC1h 25m
2026-04-18 AER53 ANC → DLG Apr 18, 19:20 UTCApr 18, 20:35 UTC1h 15m
2026-04-18 AER42 ANC → YAK Apr 18, 15:50 UTCApr 18, 16:40 UTC50m
2026-04-18 AER42 ANC → YAK Apr 18, 14:50 UTCApr 18, 15:20 UTC30m
2026-04-18 AER42 ANC → YAK Apr 18, 12:35 UTCApr 18, 13:45 UTC1h 10m
2026-04-17 AER32 ILI → ANC Apr 17, 22:25 UTCApr 17, 23:20 UTC55m
2026-04-17 AER32 ILI → ANC Apr 17, 21:25 UTCApr 17, 21:50 UTC25m
2026-04-17 AER32 ILI → ANC Apr 17, 20:35 UTCApr 17, 21:20 UTC45m

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 N127AX page for operator, model, and routing details .

Mode-S A06DC9 frequently asked

What is Mode-S code A06DC9?
A06DC9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N127AX.
Where is Mode-S A06DC9 registered?
Mode-S code A06DC9 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 A06DC9 broadcasting right now?
No active broadcast right now. Last signal was 15d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A06DC9, octal 50066711, decimal 10,513,865.
What flights does A06DC9 operate?
Mode-S A06DC9 has broadcast 15 distinct callsigns, including AER42, AER145, AER31, AER32, AER711.