Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A242A8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N245AX · BEECH 1900 · operated by TAILWIND INVESTMENTS LLC

Hex
A242A8
Octal
50441250
Decimal
10,633,896
Country
US
Tail
N245AX
Type
B190
No current signal · last broadcast 1h ago
Flights observed
119
Distinct callsigns
18
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A242A8.

Country allocation

The ICAO 24-bit address A242A8 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 18 distinct

Callsign Airline Flights Last seen
AER43 Alaska Central Express 34 2026-05-30
AER42 Alaska Central Express 16 2026-06-02
AER66 Alaska Central Express 9 2026-06-03
AER41 Alaska Central Express 8 2026-05-21
AER21 Alaska Central Express 8 2026-05-21
AER99 - 7 2026-05-26
AER65 Alaska Central Express 7 2026-06-01
AER67 Alaska Central Express 6 2026-05-28
AER53 Alaska Central Express 4 2026-04-23
AER31 Alaska Central Express 4 2026-05-20
AER145 Alaska Central Express 4 2026-04-27
AER91 Alaska Central Express 2 2026-04-18
AER68 Alaska Central Express 2 2026-04-24
AER54 Alaska Central Express 2 2026-04-18
AER52 Alaska Central Express 2 2026-05-29
AER44 Alaska Central Express 2 2026-06-02
AERT8 - 1 2026-06-02
AER999 - 1 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 AER66 SDP → ANC Jun 3, 00:50 UTCJun 3, 01:20 UTC30m
2026-06-02 AER66 SDP → ANC Jun 2, 22:10 UTCJun 2, 23:15 UTC1h 5m
2026-06-02 AER44 ANC → TEK Jun 2, 17:55 UTCJun 2, 19:55 UTC2h 0m
2026-06-02 AER42 ANC → YAK Jun 2, 15:00 UTCJun 2, 16:45 UTC1h 45m
2026-06-02 AER42 ANC → YAK Jun 2, 12:45 UTCJun 2, 14:05 UTC1h 20m
2026-06-02 AERT8 ANC → ANC Jun 2, 01:20 UTCJun 2, 01:45 UTC25m
2026-06-01 AER65 ANC → SDP Jun 1, 23:10 UTCJun 2, 00:45 UTC1h 35m
2026-06-01 AER65 ANC → SDP Jun 1, 17:25 UTCJun 1, 19:00 UTC1h 35m
2026-05-30 AER66 SDP → ANC May 30, 22:40 UTCMay 30, 23:50 UTC1h 10m
2026-05-30 AER43 ANC → KTN May 30, 17:45 UTCMay 30, 19:40 UTC1h 55m
2026-05-30 AER43 ANC → KTN May 30, 16:40 UTCMay 30, 16:55 UTC15m
2026-05-30 AER43 ANC → KTN May 30, 10:50 UTCMay 30, 13:50 UTC3h 0m
2026-05-29 AER52 ANC → DLG May 29, 19:10 UTCMay 29, 20:20 UTC1h 10m
2026-05-29 AER52 ANC → DLG May 29, 17:05 UTCMay 29, 18:25 UTC1h 20m
2026-05-28 AER65 ANC → SDP May 28, 16:25 UTCMay 28, 17:25 UTC1h 0m
2026-05-28 AER67 SNP → ANC May 28, 03:30 UTCMay 28, 05:10 UTC1h 40m
2026-05-27 AER67 SNP → ANC May 27, 23:30 UTCMay 28, 01:10 UTC1h 40m
2026-05-27 AER43 ANC → KTN May 27, 18:30 UTCMay 27, 19:30 UTC1h 0m
2026-05-27 AER43 ANC → KTN May 27, 17:30 UTCMay 27, 17:50 UTC20m
2026-05-27 AER43 ANC → KTN May 27, 16:05 UTCMay 27, 16:25 UTC20m
2026-05-27 AER43 ANC → KTN May 27, 13:00 UTCMay 27, 13:55 UTC55m
2026-05-27 AER43 ANC → KTN May 27, 11:10 UTCMay 27, 12:30 UTC1h 20m
2026-05-27 AER66 SDP → ANC May 27, 05:24 UTCMay 27, 06:29 UTC1h 5m
2026-05-27 AER66 SDP → ANC May 27, 01:14 UTCMay 27, 03:50 UTC2h 35m
2026-05-26 AER66 SDP → ANC May 26, 22:29 UTCMay 26, 23:29 UTC1h 0m
2026-05-26 AER99 - May 26, 18:34 UTCMay 26, 18:40 UTC5m
2026-05-23 AER65 ANC → SDP May 23, 22:50 UTCMay 24, 00:20 UTC1h 30m
2026-05-23 AER65 ANC → SDP May 23, 16:30 UTCMay 23, 18:20 UTC1h 51m
2026-05-23 AER99 ANC → ANC May 23, 11:00 UTCMay 23, 11:05 UTC5m
2026-05-22 AER43 ANC → KTN May 22, 19:15 UTCMay 22, 20:15 UTC1h 0m
2026-05-22 AER43 ANC → KTN May 22, 18:15 UTCMay 22, 18:35 UTC20m
2026-05-22 AER43 ANC → KTN May 22, 16:40 UTCMay 22, 17:15 UTC35m
2026-05-22 AER43 ANC → KTN May 22, 13:05 UTCMay 22, 14:00 UTC55m
2026-05-22 AER43 ANC → KTN May 22, 11:20 UTCMay 22, 12:30 UTC1h 10m
2026-05-22 AER67 SNP → ANC May 22, 04:45 UTCMay 22, 06:20 UTC1h 35m
2026-05-21 AER67 SNP → ANC May 21, 22:50 UTCMay 22, 00:50 UTC2h 0m
2026-05-21 AER41 PSG → ANC May 21, 19:15 UTCMay 21, 20:25 UTC1h 10m
2026-05-21 AER41 PSG → ANC May 21, 18:15 UTCMay 21, 18:40 UTC25m
2026-05-21 AER41 PSG → ANC May 21, 16:45 UTCMay 21, 17:25 UTC40m
2026-05-21 AER41 PSG → ANC May 21, 15:30 UTCMay 21, 16:01 UTC30m
2026-05-21 AER41 PSG → ANC May 21, 14:05 UTCMay 21, 14:30 UTC25m
2026-05-21 AER41 PSG → ANC May 21, 13:05 UTCMay 21, 13:20 UTC15m
2026-05-21 AER41 PSG → ANC May 21, 11:40 UTCMay 21, 11:50 UTC10m
2026-05-21 AER41 PSG → ANC May 21, 09:55 UTCMay 21, 11:05 UTC1h 10m
2026-05-21 AER21 ANC → PSG May 21, 00:05 UTCMay 21, 01:25 UTC1h 20m
2026-05-20 AER21 ANC → PSG May 20, 22:45 UTCMay 20, 23:30 UTC45m
2026-05-20 AER21 ANC → PSG May 20, 21:10 UTCMay 20, 21:55 UTC45m
2026-05-20 AER21 ANC → PSG May 20, 19:15 UTCMay 20, 20:35 UTC1h 20m
2026-05-20 AER31 AKN → ANC May 20, 16:05 UTCMay 20, 17:05 UTC1h 0m
2026-05-20 AER31 AKN → ANC May 20, 14:15 UTCMay 20, 15:25 UTC1h 10m

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 N245AX page for operator, model, and routing details .

Mode-S A242A8 frequently asked

What is Mode-S code A242A8?
A242A8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N245AX.
Where is Mode-S A242A8 registered?
Mode-S code A242A8 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 A242A8 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A242A8, octal 50441250, decimal 10,633,896.
What flights does A242A8 operate?
Mode-S A242A8 has broadcast 18 distinct callsigns, including AER43, AER42, AER66, AER41, AER21.