Apparatus

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sensors Mode-S transponder

A372E4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N321JW · operated by WOLL JOHN P

Hex
A372E4
Octal
50671344
Decimal
10,711,780
Country
US
Tail
N321JW
No current signal · last broadcast 17h ago
Flights observed
98
Distinct callsigns
1
Country
US
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S A372E4.

Country allocation

The ICAO 24-bit address A372E4 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
N321JW - 98 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N321JW - Jul 17, 18:00 UTCJul 17, 18:50 UTC50m
2026-07-17 N321JW - Jul 17, 16:15 UTCJul 17, 16:59 UTC45m
2026-07-17 N321JW - Jul 17, 14:55 UTCJul 17, 15:10 UTC15m
2026-07-17 N321JW - Jul 17, 14:15 UTCJul 17, 14:24 UTC10m
2026-07-16 N321JW - Jul 16, 18:00 UTCJul 16, 19:10 UTC1h 10m
2026-07-16 N321JW - Jul 16, 16:30 UTCJul 16, 17:30 UTC1h 0m
2026-07-16 N321JW - Jul 16, 12:20 UTCJul 16, 12:30 UTC10m
2026-07-16 N321JW - Jul 16, 10:55 UTCJul 16, 11:45 UTC50m
2026-07-15 N321JW - Jul 15, 16:15 UTCJul 15, 17:25 UTC1h 10m
2026-07-15 N321JW - Jul 15, 14:05 UTCJul 15, 15:20 UTC1h 15m
2026-07-10 N321JW - Jul 10, 18:25 UTCJul 10, 19:20 UTC55m
2026-07-10 N321JW - Jul 10, 14:45 UTCJul 10, 16:00 UTC1h 15m
2026-07-09 N321JW - Jul 9, 13:45 UTCJul 9, 15:15 UTC1h 30m
2026-07-08 N321JW - Jul 8, 15:30 UTCJul 8, 15:40 UTC10m
2026-07-06 N321JW - Jul 6, 16:15 UTCJul 6, 16:25 UTC10m
2026-07-06 N321JW - Jul 6, 14:35 UTCJul 6, 14:45 UTC10m
2026-07-05 N321JW - Jul 5, 01:50 UTCJul 5, 02:25 UTC35m
2026-07-02 N321JW - Jul 2, 22:00 UTCJul 2, 23:45 UTC1h 45m
2026-07-02 N321JW - Jul 2, 17:50 UTCJul 2, 19:35 UTC1h 45m
2026-07-02 N321JW - Jul 2, 13:45 UTCJul 2, 15:15 UTC1h 30m
2026-06-23 N321JW - Jun 23, 14:25 UTCJun 23, 14:44 UTC20m
2026-06-23 N321JW - Jun 23, 11:35 UTCJun 23, 13:45 UTC2h 10m
2026-06-19 N321JW - Jun 19, 10:39 UTCJun 19, 13:59 UTC3h 20m
2026-06-16 N321JW - Jun 16, 17:24 UTCJun 16, 19:50 UTC2h 26m
2026-06-15 N321JW - Jun 15, 19:25 UTCJun 15, 21:35 UTC2h 10m
2026-06-15 N321JW BTP → BTP Jun 15, 18:25 UTCJun 15, 18:50 UTC25m
2026-06-15 N321JW - Jun 15, 15:59 UTCJun 15, 17:50 UTC1h 50m
2026-06-15 N321JW - Jun 15, 14:24 UTCJun 15, 15:25 UTC1h 0m
2026-06-14 N321JW - Jun 14, 15:00 UTCJun 14, 15:20 UTC20m
2026-06-12 N321JW - Jun 12, 11:50 UTCJun 12, 14:35 UTC2h 45m
2026-06-10 N321JW - Jun 10, 15:30 UTCJun 10, 16:55 UTC1h 25m
2026-06-10 N321JW - Jun 10, 13:10 UTCJun 10, 14:45 UTC1h 35m
2026-06-10 N321JW - Jun 10, 11:50 UTCJun 10, 12:30 UTC40m
2026-06-08 N321JW - Jun 8, 22:10 UTCJun 8, 23:55 UTC1h 45m
2026-06-08 N321JW - Jun 8, 21:00 UTCJun 8, 21:40 UTC40m
2026-06-07 N321JW - Jun 7, 20:50 UTCJun 7, 21:10 UTC20m
2026-06-07 N321JW - Jun 7, 18:00 UTCJun 7, 19:35 UTC1h 35m
2026-06-07 N321JW - Jun 7, 15:30 UTCJun 7, 16:30 UTC1h 0m
2026-06-06 N321JW - Jun 6, 17:05 UTCJun 6, 17:24 UTC20m
2026-06-06 N321JW - Jun 6, 13:09 UTCJun 6, 13:30 UTC20m
2026-06-05 N321JW - Jun 5, 16:50 UTCJun 5, 18:20 UTC1h 30m
2026-06-05 N321JW - Jun 5, 14:55 UTCJun 5, 15:20 UTC25m
2026-06-05 N321JW - Jun 5, 12:00 UTCJun 5, 13:45 UTC1h 45m
2026-06-04 N321JW - Jun 4, 18:20 UTCJun 4, 19:05 UTC45m
2026-06-04 N321JW - Jun 4, 17:25 UTCJun 4, 17:50 UTC25m
2026-06-04 N321JW - Jun 4, 15:05 UTCJun 4, 15:30 UTC25m
2026-06-02 N321JW - Jun 2, 21:20 UTCJun 2, 22:00 UTC40m
2026-06-01 N321JW - Jun 1, 10:15 UTCJun 1, 10:50 UTC35m
2026-05-31 N321JW - May 31, 17:55 UTCMay 31, 18:15 UTC20m
2026-05-30 N321JW - May 30, 20:05 UTCMay 30, 20:55 UTC50m

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 N321JW page for operator, model, and routing details .

Mode-S A372E4 frequently asked

What is Mode-S code A372E4?
A372E4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N321JW.
Where is Mode-S A372E4 registered?
Mode-S code A372E4 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 A372E4 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A372E4, octal 50671344, decimal 10,711,780.
What flights does A372E4 operate?
Mode-S A372E4 has broadcast 1 distinct callsign, including N321JW.