Apparatus

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sensors Mode-S transponder

A84E98

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N634WM · operated by BOARD OF TRUSTEES OF WESTERN MICHIGAN UNIVERSITY

Hex
A84E98
Octal
52047230
Decimal
11,030,168
Country
US
Tail
N634WM
Type
SR20
Broadcasting now · callsign WMU63 · 3,275 ft
Flights observed
162
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Current position

A84E98 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A84E98 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
WMU63 - 161 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 WMU63 - Jul 12, 00:01 UTCJul 12, 00:50 UTC50m
2026-07-11 WMU63 - Jul 11, 21:25 UTCJul 11, 22:15 UTC50m
2026-07-11 WMU63 - Jul 11, 19:40 UTCJul 11, 20:15 UTC35m
2026-07-11 WMU63 - Jul 11, 18:15 UTCJul 11, 18:25 UTC10m
2026-07-11 WMU63 - Jul 11, 17:10 UTCJul 11, 17:45 UTC35m
2026-07-11 WMU63 - Jul 11, 15:00 UTCJul 11, 16:05 UTC1h 5m
2026-07-11 WMU63 - Jul 11, 12:50 UTCJul 11, 13:50 UTC1h 0m
2026-07-11 WMU63 - Jul 11, 02:00 UTCJul 11, 02:30 UTC30m
2026-07-11 WMU63 - Jul 11, 00:35 UTCJul 11, 01:25 UTC50m
2026-07-10 WMU63 - Jul 10, 22:40 UTCJul 10, 23:30 UTC50m
2026-07-10 WMU63 - Jul 10, 13:25 UTCJul 10, 14:15 UTC50m
2026-07-10 WMU63 - Jul 10, 02:15 UTCJul 10, 03:10 UTC55m
2026-07-09 WMU63 BTL → BTL Jul 9, 23:05 UTCJul 10, 00:20 UTC1h 15m
2026-07-09 WMU63 - Jul 9, 21:35 UTCJul 9, 22:20 UTC45m
2026-07-09 WMU63 - Jul 9, 13:15 UTCJul 9, 14:35 UTC1h 20m
2026-07-09 WMU63 - Jul 9, 11:30 UTCJul 9, 12:35 UTC1h 5m
2026-07-09 WMU63 - Jul 9, 03:40 UTCJul 9, 04:15 UTC35m
2026-07-09 WMU63 - Jul 9, 02:25 UTCJul 9, 02:55 UTC30m
2026-07-08 WMU63 - Jul 8, 23:00 UTCJul 9, 00:00 UTC1h 0m
2026-07-08 WMU63 - Jul 8, 20:25 UTCJul 8, 21:45 UTC1h 20m
2026-07-08 WMU63 - Jul 8, 18:10 UTCJul 8, 19:15 UTC1h 5m
2026-07-08 WMU63 - Jul 8, 16:50 UTCJul 8, 17:00 UTC10m
2026-07-08 WMU63 - Jul 8, 15:25 UTCJul 8, 16:00 UTC35m
2026-07-08 WMU63 - Jul 8, 13:45 UTCJul 8, 14:35 UTC50m
2026-07-08 WMU63 - Jul 8, 11:35 UTCJul 8, 12:55 UTC1h 20m
2026-07-08 WMU63 - Jul 8, 02:05 UTCJul 8, 02:15 UTC10m
2026-07-07 WMU63 - Jul 7, 21:30 UTCJul 7, 23:05 UTC1h 35m
2026-07-07 WMU63 - Jul 7, 19:35 UTCJul 7, 20:45 UTC1h 10m
2026-07-07 WMU63 - Jul 7, 17:25 UTCJul 7, 17:40 UTC15m
2026-07-07 WMU63 - Jul 7, 15:35 UTCJul 7, 15:45 UTC10m
2026-07-06 WMU63 - Jul 6, 18:15 UTCJul 6, 18:40 UTC25m
2026-07-06 WMU63 - Jul 6, 15:30 UTCJul 6, 16:45 UTC1h 15m
2026-07-06 WMU63 - Jul 6, 12:45 UTCJul 6, 13:50 UTC1h 5m
2026-07-02 WMU63 - Jul 2, 14:20 UTCJul 2, 14:55 UTC35m
2026-07-01 WMU63 - Jul 1, 11:20 UTCJul 1, 12:25 UTC1h 5m
2026-07-01 WMU63 - Jul 1, 01:30 UTCJul 1, 03:25 UTC1h 55m
2026-06-30 WMU63 BTL → BTL Jun 30, 23:10 UTCJun 30, 23:25 UTC15m
2026-06-30 WMU63 - Jun 30, 21:25 UTCJun 30, 21:50 UTC25m
2026-06-30 WMU63 - Jun 30, 18:55 UTCJun 30, 20:10 UTC1h 15m
2026-06-30 WMU63 - Jun 30, 00:35 UTCJun 30, 01:40 UTC1h 6m
2026-06-29 WMU63 - Jun 29, 23:39 UTCJun 29, 23:49 UTC10m
2026-06-22 WMU63 - Jun 22, 17:04 UTCJun 22, 18:04 UTC1h 0m
2026-06-20 WMU63 - Jun 20, 02:14 UTCJun 20, 03:09 UTC55m
2026-06-19 WMU63 - Jun 19, 12:29 UTCJun 19, 13:24 UTC55m
2026-06-19 WMU63 - Jun 19, 01:54 UTCJun 19, 02:50 UTC55m
2026-06-18 WMU63 - Jun 18, 21:05 UTCJun 18, 22:00 UTC55m
2026-06-17 WMU63 - Jun 17, 15:30 UTCJun 17, 17:05 UTC1h 35m
2026-06-17 WMU63 - Jun 17, 13:15 UTCJun 17, 14:20 UTC1h 5m
2026-06-17 WMU63 - Jun 17, 12:20 UTCJun 17, 12:40 UTC20m
2026-06-17 WMU63 - Jun 17, 11:25 UTCJun 17, 11:35 UTC10m

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 N634WM page for operator, model, and routing details .

Mode-S A84E98 frequently asked

What is Mode-S code A84E98?
A84E98 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N634WM.
Where is Mode-S A84E98 registered?
Mode-S code A84E98 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 A84E98 broadcasting right now?
Yes. Mode-S A84E98 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84E98, octal 52047230, decimal 11,030,168.
What flights does A84E98 operate?
Mode-S A84E98 has broadcast 1 distinct callsign, including WMU63.