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sensors Mode-S transponder

A26661

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N254AG · operated by SKYWEST LEASING INC

Hex
A26661
Octal
50463141
Decimal
10,643,041
Country
US
Tail
N254AG
Type
P28A
Broadcasting now · callsign ASI145 · 1,550 ft
Flights observed
185
Distinct callsigns
1
Country
US
Last broadcast
Jul 22, 16:10 UTC

Current position

A26661 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A26661 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
ASI145 - 185 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 ASI145 - Jul 22, 13:35 UTCJul 22, 16:10 UTC2h 35m
2026-07-21 ASI145 DVT → DVT Jul 21, 23:20 UTCJul 22, 00:20 UTC1h 0m
2026-07-21 ASI145 - Jul 21, 19:55 UTCJul 21, 20:55 UTC1h 0m
2026-07-21 ASI145 - Jul 21, 17:50 UTCJul 21, 18:40 UTC50m
2026-07-21 ASI145 - Jul 21, 15:45 UTCJul 21, 16:10 UTC25m
2026-07-21 ASI145 - Jul 21, 13:55 UTCJul 21, 14:50 UTC55m
2026-07-20 ASI145 - Jul 20, 17:20 UTCJul 20, 17:45 UTC25m
2026-07-20 ASI145 DVT → DVT Jul 20, 16:15 UTCJul 20, 16:40 UTC25m
2026-07-20 ASI145 - Jul 20, 14:35 UTCJul 20, 15:10 UTC35m
2026-07-20 ASI145 DVT → DVT Jul 20, 13:30 UTCJul 20, 13:50 UTC20m
2026-07-20 ASI145 - Jul 20, 13:15 UTCJul 20, 13:25 UTC10m
2026-07-19 ASI145 DVT → DVT Jul 19, 22:50 UTCJul 20, 00:00 UTC1h 10m
2026-07-19 ASI145 - Jul 19, 18:40 UTCJul 19, 19:35 UTC55m
2026-07-19 ASI145 DVT → DVT Jul 19, 15:10 UTCJul 19, 16:20 UTC1h 10m
2026-07-19 ASI145 DVT → DVT Jul 19, 00:05 UTCJul 19, 01:00 UTC55m
2026-07-18 ASI145 - Jul 18, 21:10 UTCJul 18, 22:15 UTC1h 5m
2026-07-18 ASI145 DVT → DVT Jul 18, 18:50 UTCJul 18, 19:15 UTC25m
2026-07-18 ASI145 DVT → DVT Jul 18, 15:30 UTCJul 18, 16:15 UTC45m
2026-07-17 ASI145 - Jul 17, 19:40 UTCJul 17, 20:15 UTC35m
2026-07-17 ASI145 DVT → DVT Jul 17, 16:40 UTCJul 17, 16:55 UTC15m
2026-07-16 ASI145 DVT → DVT Jul 16, 22:49 UTCJul 16, 23:20 UTC30m
2026-07-16 ASI145 DVT → DVT Jul 16, 20:45 UTCJul 16, 21:25 UTC40m
2026-07-16 ASI145 - Jul 16, 13:30 UTCJul 16, 14:40 UTC1h 10m
2026-07-15 ASI145 DVT → DVT Jul 15, 22:25 UTCJul 16, 01:10 UTC2h 45m
2026-07-15 ASI145 - Jul 15, 17:10 UTCJul 15, 17:45 UTC35m
2026-07-15 ASI145 DVT → DVT Jul 15, 14:00 UTCJul 15, 15:05 UTC1h 5m
2026-06-17 ASI145 DVT → DVT Jun 17, 17:15 UTCJun 17, 18:45 UTC1h 30m
2026-06-17 ASI145 DVT → DVT Jun 17, 15:15 UTCJun 17, 16:05 UTC50m
2026-06-17 ASI145 DVT → DVT Jun 17, 13:00 UTCJun 17, 13:30 UTC30m
2026-06-16 ASI145 DVT → DVT Jun 16, 18:09 UTCJun 16, 18:50 UTC40m
2026-06-16 ASI145 - Jun 16, 15:35 UTCJun 16, 16:39 UTC1h 5m
2026-06-16 ASI145 DVT → DVT Jun 16, 13:25 UTCJun 16, 14:30 UTC1h 5m
2026-06-15 ASI145 - Jun 15, 16:15 UTCJun 15, 17:30 UTC1h 15m
2026-06-15 ASI145 DVT → DVT Jun 15, 13:45 UTCJun 15, 15:19 UTC1h 35m
2026-06-14 ASI145 - Jun 14, 12:40 UTCJun 14, 14:05 UTC1h 25m
2026-06-13 ASI145 DVT → DVT Jun 13, 21:05 UTCJun 13, 22:00 UTC55m
2026-06-13 ASI145 DVT → DVT Jun 13, 19:10 UTCJun 13, 19:50 UTC40m
2026-06-13 ASI145 DVT → DVT Jun 13, 15:20 UTCJun 13, 16:00 UTC40m
2026-06-13 ASI145 - Jun 13, 13:40 UTCJun 13, 14:25 UTC45m
2026-06-12 ASI145 DVT → DVT Jun 12, 18:55 UTCJun 12, 20:20 UTC1h 25m
2026-06-12 ASI145 DVT → DVT Jun 12, 15:55 UTCJun 12, 16:55 UTC1h 0m
2026-06-12 ASI145 - Jun 12, 06:10 UTCJun 12, 07:30 UTC1h 20m
2026-06-12 ASI145 DVT → TUS Jun 12, 03:30 UTCJun 12, 04:55 UTC1h 25m
2026-06-10 ASI145 - Jun 10, 18:45 UTCJun 10, 19:55 UTC1h 10m
2026-06-10 ASI145 - Jun 10, 14:35 UTCJun 10, 15:55 UTC1h 20m
2026-06-10 ASI145 DVT → DVT Jun 10, 03:05 UTCJun 10, 03:55 UTC50m
2026-06-09 ASI145 DVT → DVT Jun 9, 17:50 UTCJun 9, 19:20 UTC1h 30m
2026-06-09 ASI145 DVT → DVT Jun 9, 13:55 UTCJun 9, 14:55 UTC1h 0m
2026-06-05 ASI145 - Jun 5, 14:30 UTCJun 5, 16:20 UTC1h 50m
2026-06-04 ASI145 DVT → DVT Jun 4, 20:55 UTCJun 4, 21:40 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 N254AG page for operator, model, and routing details .

Mode-S A26661 frequently asked

What is Mode-S code A26661?
A26661 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N254AG.
Where is Mode-S A26661 registered?
Mode-S code A26661 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 A26661 broadcasting right now?
Yes. Mode-S A26661 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A26661, octal 50463141, decimal 10,643,041.
What flights does A26661 operate?
Mode-S A26661 has broadcast 1 distinct callsign, including ASI145.