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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 Jul 26, 21:40 UTC
Flights observed
248
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:40 UTC

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 20 distinct

Callsign Airline Flights Last seen
AER41 Alaska Central Express 42 2026-07-23
AER42 Alaska Central Express 30 2026-07-25
AER43 - 19 2026-07-20
AER31 Alaska Central Express 18 2026-07-22
AER65 Alaska Central Express 14 2026-07-26
AER52 - 13 2026-07-11
AER32 - 12 2026-06-29
AER67 Alaska Central Express 11 2026-07-25
AER21 Alaska Central Express 10 2026-07-26
AER145 Alaska Central Express 10 2026-07-26
AER66 - 9 2026-07-19
AER53 - 7 2026-07-03
AER144 Alaska Central Express 6 2026-07-26
AER99 - 4 2026-07-21
AER711 Alaska Central Express 4 2026-05-07
AER64 - 4 2026-07-05
AER45 Alaska Central Express 4 2026-07-22
AER35 Alaska Central Express 4 2026-07-24
AERT8 - 3 2026-06-26
AER146 Alaska Central Express 3 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AER145 ANC → ADQ Jul 26, 20:45 UTCJul 26, 21:40 UTC55m
2026-07-26 AER144 ANC → ADQ Jul 26, 16:45 UTCJul 26, 17:45 UTC1h 0m
2026-07-26 AER144 ANC → ADQ Jul 26, 15:05 UTCJul 26, 16:00 UTC55m
2026-07-26 AER21 ANC → PSG Jul 26, 06:10 UTCJul 26, 08:20 UTC2h 11m
2026-07-26 AER21 ANC → PSG Jul 26, 03:10 UTCJul 26, 05:35 UTC2h 25m
2026-07-26 AER65 ANC → SDP Jul 26, 00:10 UTCJul 26, 01:45 UTC1h 35m
2026-07-25 AER65 ANC → SDP Jul 25, 20:45 UTCJul 25, 22:50 UTC2h 5m
2026-07-25 AER42 ANC → YAK Jul 25, 17:50 UTCJul 25, 18:35 UTC45m
2026-07-25 AER42 ANC → YAK Jul 25, 16:25 UTCJul 25, 17:20 UTC55m
2026-07-25 AER42 ANC → YAK Jul 25, 12:30 UTCJul 25, 14:00 UTC1h 30m
2026-07-25 AER67 SNP → ANC Jul 25, 04:40 UTCJul 25, 06:20 UTC1h 40m
2026-07-24 AER67 SNP → ANC Jul 24, 22:50 UTCJul 25, 00:30 UTC1h 40m
2026-07-24 AER35 - Jul 24, 19:55 UTCJul 24, 20:40 UTC45m
2026-07-24 AER35 - Jul 24, 18:20 UTCJul 24, 19:00 UTC40m
2026-07-24 AER42 ANC → YAK Jul 24, 15:35 UTCJul 24, 16:30 UTC55m
2026-07-24 AER42 ANC → YAK Jul 24, 14:15 UTCJul 24, 15:10 UTC55m
2026-07-24 AER42 ANC → YAK Jul 24, 12:15 UTCJul 24, 13:40 UTC1h 25m
2026-07-24 AER67 SNP → ANC Jul 24, 04:55 UTCJul 24, 06:25 UTC1h 30m
2026-07-23 AER67 SNP → ANC Jul 23, 23:10 UTCJul 24, 01:00 UTC1h 50m
2026-07-23 AER41 PSG → ANC Jul 23, 18:25 UTCJul 23, 21:00 UTC2h 35m
2026-07-23 AER41 PSG → ANC Jul 23, 17:05 UTCJul 23, 17:25 UTC20m
2026-07-23 AER41 PSG → ANC Jul 23, 13:50 UTCJul 23, 14:15 UTC25m
2026-07-23 AER41 PSG → ANC Jul 23, 12:55 UTCJul 23, 13:15 UTC20m
2026-07-23 AER41 PSG → ANC Jul 23, 10:05 UTCJul 23, 12:00 UTC1h 55m
2026-07-23 AER65 ANC → SDP Jul 23, 01:10 UTCJul 23, 02:35 UTC1h 25m
2026-07-22 AER65 ANC → SDP Jul 22, 20:45 UTCJul 22, 21:40 UTC55m
2026-07-22 AER65 ANC → SDP Jul 22, 18:55 UTCJul 22, 20:15 UTC1h 20m
2026-07-22 AER31 AKN → ANC Jul 22, 15:55 UTCJul 22, 16:55 UTC1h 0m
2026-07-22 AER31 AKN → ANC Jul 22, 13:50 UTCJul 22, 15:15 UTC1h 25m
2026-07-22 AER45 YAK → ANC Jul 22, 04:35 UTCJul 22, 05:25 UTC50m
2026-07-22 AER45 YAK → ANC Jul 22, 02:35 UTCJul 22, 03:55 UTC1h 20m
2026-07-21 AER99 ANC → ANC Jul 21, 21:35 UTCJul 21, 21:50 UTC15m
2026-07-21 AER41 PSG → ANC Jul 21, 10:15 UTCJul 21, 11:10 UTC55m
2026-07-21 AER67 SNP → ANC Jul 21, 05:10 UTCJul 21, 06:40 UTC1h 30m
2026-07-20 AER67 - Jul 20, 22:25 UTCJul 21, 00:10 UTC1h 45m
2026-07-20 AER43 - Jul 20, 17:50 UTCJul 20, 19:45 UTC1h 55m
2026-07-20 AER43 - Jul 20, 16:45 UTCJul 20, 17:15 UTC30m
2026-07-20 AER43 - Jul 20, 15:40 UTCJul 20, 16:00 UTC20m
2026-07-20 AER43 - Jul 20, 10:45 UTCJul 20, 13:45 UTC3h 0m
2026-07-19 AER66 - Jul 19, 02:10 UTCJul 19, 05:25 UTC3h 15m
2026-07-19 AER66 - Jul 19, 01:05 UTCJul 19, 01:35 UTC30m
2026-07-18 AER66 - Jul 18, 22:05 UTCJul 18, 23:15 UTC1h 10m
2026-07-18 AER41 PSG → ANC Jul 18, 18:00 UTCJul 18, 20:10 UTC2h 10m
2026-07-18 AER41 PSG → ANC Jul 18, 16:50 UTCJul 18, 17:10 UTC20m
2026-07-18 AER41 PSG → ANC Jul 18, 14:20 UTCJul 18, 14:50 UTC30m
2026-07-18 AER41 PSG → ANC Jul 18, 13:10 UTCJul 18, 13:25 UTC15m
2026-07-18 AER41 PSG → ANC Jul 18, 10:00 UTCJul 18, 11:55 UTC1h 55m
2026-07-16 AER44 ANC → ANC Jul 16, 20:05 UTCJul 16, 22:25 UTC2h 20m
2026-07-16 AER31 AKN → ANC Jul 16, 17:20 UTCJul 16, 18:19 UTC1h 0m
2026-07-16 AER31 ANC → AKN Jul 16, 15:25 UTCJul 16, 16:44 UTC1h 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 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 Jul 26, 21:40 UTC.
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 20 distinct callsigns, including AER41, AER42, AER43, AER31, AER65.