Apparatus

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sensors Mode-S transponder

A8EF2B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N675JZ · operated by MERCER FRASER CO

Hex
A8EF2B
Octal
52167453
Decimal
11,071,275
Country
US
Tail
N675JZ
No current signal · last broadcast 5d ago
Flights observed
95
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S A8EF2B.

Country allocation

The ICAO 24-bit address A8EF2B 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
N675JZ - 95 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 N675JZ - Jul 9, 03:35 UTCJul 9, 04:35 UTC1h 0m
2026-07-09 N675JZ - Jul 9, 01:55 UTCJul 9, 02:50 UTC55m
2026-07-02 N675JZ - Jul 2, 18:00 UTCJul 2, 19:10 UTC1h 10m
2026-07-02 N675JZ - Jul 2, 13:20 UTCJul 2, 14:20 UTC1h 0m
2026-07-01 N675JZ - Jul 1, 22:05 UTCJul 1, 23:00 UTC55m
2026-07-01 N675JZ SJC → MCC Jul 1, 20:55 UTCJul 1, 21:30 UTC35m
2026-07-01 N675JZ - Jul 1, 16:30 UTCJul 1, 16:40 UTC10m
2026-07-01 N675JZ - Jul 1, 15:20 UTCJul 1, 16:20 UTC1h 0m
2026-06-29 N675JZ - Jun 29, 01:14 UTCJun 29, 01:44 UTC30m
2026-06-28 N675JZ - Jun 28, 22:15 UTCJun 28, 22:39 UTC25m
2026-06-28 N675JZ SJC → SQL Jun 28, 19:59 UTCJun 28, 21:30 UTC1h 30m
2026-06-28 N675JZ - Jun 28, 18:59 UTCJun 28, 19:09 UTC10m
2026-06-28 N675JZ - Jun 28, 17:50 UTCJun 28, 18:44 UTC55m
2026-06-26 N675JZ - Jun 26, 22:34 UTCJun 26, 23:49 UTC1h 15m
2026-06-26 N675JZ SJC → SJC Jun 26, 18:44 UTCJun 26, 20:20 UTC1h 35m
2026-06-26 N675JZ - Jun 26, 13:15 UTCJun 26, 14:09 UTC55m
2026-06-24 N675JZ - Jun 24, 01:34 UTCJun 24, 02:45 UTC1h 10m
2026-06-23 N675JZ - Jun 23, 14:55 UTCJun 23, 16:24 UTC1h 30m
2026-06-22 N675JZ - Jun 22, 20:49 UTCJun 22, 21:25 UTC35m
2026-06-22 N675JZ - Jun 22, 19:00 UTCJun 22, 19:40 UTC40m
2026-06-21 N675JZ - Jun 21, 18:20 UTCJun 21, 20:54 UTC2h 35m
2026-06-21 N675JZ - Jun 21, 16:54 UTCJun 21, 17:29 UTC35m
2026-06-21 N675JZ - Jun 21, 15:54 UTCJun 21, 16:14 UTC20m
2026-06-20 N675JZ - Jun 20, 19:24 UTCJun 20, 19:44 UTC20m
2026-06-20 N675JZ - Jun 20, 16:44 UTCJun 20, 18:04 UTC1h 20m
2026-06-20 N675JZ - Jun 20, 00:09 UTCJun 20, 01:55 UTC1h 45m
2026-06-19 N675JZ - Jun 19, 22:19 UTCJun 19, 22:49 UTC30m
2026-06-19 N675JZ - Jun 19, 21:04 UTCJun 19, 21:24 UTC20m
2026-06-19 N675JZ - Jun 19, 19:54 UTCJun 19, 20:24 UTC30m
2026-06-19 N675JZ - Jun 19, 16:39 UTCJun 19, 19:19 UTC2h 40m
2026-06-18 N675JZ - Jun 18, 14:40 UTCJun 18, 16:50 UTC2h 10m
2026-06-11 N675JZ - Jun 11, 00:25 UTCJun 11, 00:35 UTC10m
2026-06-10 N675JZ - Jun 10, 23:10 UTCJun 10, 23:50 UTC40m
2026-06-10 N675JZ - Jun 10, 15:35 UTCJun 10, 16:40 UTC1h 5m
2026-06-05 N675JZ - Jun 5, 22:00 UTCJun 5, 22:20 UTC20m
2026-06-05 N675JZ - Jun 5, 21:25 UTCJun 5, 21:50 UTC25m
2026-06-05 N675JZ - Jun 5, 20:10 UTCJun 5, 20:45 UTC35m
2026-05-29 N675JZ - May 29, 23:20 UTCMay 30, 00:25 UTC1h 5m
2026-05-29 N675JZ - May 29, 21:55 UTCMay 29, 22:40 UTC45m
2026-05-29 N675JZ - May 29, 19:45 UTCMay 29, 20:10 UTC25m
2026-05-29 N675JZ - May 29, 17:00 UTCMay 29, 17:10 UTC10m
2026-05-29 N675JZ - May 29, 15:20 UTCMay 29, 15:25 UTC5m
2026-05-28 N675JZ - May 28, 13:50 UTCMay 28, 17:05 UTC3h 15m
2026-05-18 N675JZ - May 18, 14:55 UTCMay 18, 15:55 UTC1h 0m
2026-05-18 N675JZ - May 18, 13:25 UTCMay 18, 14:20 UTC55m
2026-05-17 N675JZ - May 17, 22:40 UTCMay 18, 00:10 UTC1h 30m
2026-05-17 N675JZ - May 17, 19:20 UTCMay 17, 22:05 UTC2h 45m
2026-05-17 N675JZ - May 17, 18:10 UTCMay 17, 18:35 UTC25m
2026-05-17 N675JZ - May 17, 00:05 UTCMay 17, 00:30 UTC25m
2026-05-16 N675JZ SJC → RDD May 16, 17:55 UTCMay 16, 19:15 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 N675JZ page for operator, model, and routing details .

Mode-S A8EF2B frequently asked

What is Mode-S code A8EF2B?
A8EF2B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N675JZ.
Where is Mode-S A8EF2B registered?
Mode-S code A8EF2B 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 A8EF2B broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8EF2B, octal 52167453, decimal 11,071,275.
What flights does A8EF2B operate?
Mode-S A8EF2B has broadcast 1 distinct callsign, including N675JZ.