Apparatus

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sensors Mode-S transponder

A9980E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N717WM · operated by BOARD OF TRUSTEES OF WESTERN MICHIGAN UNIVERSITY

Hex
A9980E
Octal
52314016
Decimal
11,114,510
Country
US
Tail
N717WM
Type
SR20
Broadcasting now · 1,725 ft
Flights observed
232
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 02:55 UTC

Current position

A9980E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A9980E 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
WMU71 - 232 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WMU71 - Jul 26, 01:55 UTCJul 26, 02:55 UTC1h 0m
2026-07-25 WMU71 - Jul 25, 22:15 UTCJul 25, 23:45 UTC1h 30m
2026-07-25 WMU71 - Jul 25, 18:40 UTCJul 25, 19:55 UTC1h 15m
2026-07-25 WMU71 - Jul 25, 16:35 UTCJul 25, 17:35 UTC1h 0m
2026-07-25 WMU71 - Jul 25, 14:25 UTCJul 25, 15:25 UTC1h 0m
2026-07-25 WMU71 - Jul 25, 12:15 UTCJul 25, 13:10 UTC55m
2026-07-25 WMU71 - Jul 25, 02:05 UTCJul 25, 03:15 UTC1h 10m
2026-07-24 WMU71 BTL → BTL Jul 24, 21:20 UTCJul 24, 22:10 UTC50m
2026-07-24 WMU71 - Jul 24, 18:45 UTCJul 24, 20:25 UTC1h 40m
2026-07-24 WMU71 - Jul 24, 16:10 UTCJul 24, 17:05 UTC55m
2026-07-24 WMU71 - Jul 24, 13:30 UTCJul 24, 14:50 UTC1h 20m
2026-07-24 WMU71 - Jul 24, 11:25 UTCJul 24, 12:35 UTC1h 10m
2026-07-23 WMU71 - Jul 23, 22:45 UTCJul 24, 00:00 UTC1h 15m
2026-07-23 WMU71 - Jul 23, 21:20 UTCJul 23, 21:55 UTC35m
2026-07-23 WMU71 - Jul 23, 18:55 UTCJul 23, 20:05 UTC1h 10m
2026-07-23 WMU71 - Jul 23, 17:35 UTCJul 23, 18:00 UTC25m
2026-07-23 WMU71 - Jul 23, 16:55 UTCJul 23, 17:05 UTC10m
2026-07-23 WMU71 - Jul 23, 15:00 UTCJul 23, 16:05 UTC1h 5m
2026-07-23 WMU71 - Jul 23, 12:25 UTCJul 23, 13:45 UTC1h 20m
2026-07-23 WMU71 - Jul 23, 03:25 UTCJul 23, 03:50 UTC25m
2026-07-23 WMU71 - Jul 23, 00:30 UTCJul 23, 00:40 UTC10m
2026-07-22 WMU71 BTL → BTL Jul 22, 22:05 UTCJul 22, 23:35 UTC1h 30m
2026-07-22 WMU71 - Jul 22, 20:10 UTCJul 22, 21:10 UTC1h 0m
2026-07-22 WMU71 BTL → BTL Jul 22, 18:25 UTCJul 22, 19:20 UTC55m
2026-07-22 WMU71 - Jul 22, 12:40 UTCJul 22, 14:25 UTC1h 45m
2026-07-20 WMU71 - Jul 20, 22:45 UTCJul 20, 23:45 UTC1h 0m
2026-07-15 WMU71 - Jul 15, 17:20 UTCJul 15, 17:55 UTC35m
2026-07-14 WMU71 - Jul 14, 19:45 UTCJul 14, 21:00 UTC1h 15m
2026-07-14 WMU71 - Jul 14, 17:15 UTCJul 14, 18:10 UTC55m
2026-07-14 WMU71 - Jul 14, 13:15 UTCJul 14, 14:10 UTC55m
2026-07-13 WMU71 - Jul 13, 22:45 UTCJul 13, 23:55 UTC1h 10m
2026-07-13 WMU71 - Jul 13, 21:15 UTCJul 13, 21:35 UTC20m
2026-07-13 WMU71 - Jul 13, 20:40 UTCJul 13, 21:10 UTC30m
2026-07-13 WMU71 - Jul 13, 18:25 UTCJul 13, 19:55 UTC1h 30m
2026-07-13 WMU71 BTL → BTL Jul 13, 16:40 UTCJul 13, 17:40 UTC1h 0m
2026-07-13 WMU71 - Jul 13, 15:30 UTCJul 13, 15:45 UTC15m
2026-07-13 WMU71 - Jul 13, 14:20 UTCJul 13, 14:50 UTC30m
2026-07-13 WMU71 - Jul 13, 12:20 UTCJul 13, 13:40 UTC1h 20m
2026-07-11 WMU71 - Jul 11, 20:40 UTCJul 11, 22:25 UTC1h 45m
2026-07-11 WMU71 - Jul 11, 18:25 UTCJul 11, 18:45 UTC20m
2026-07-11 WMU71 - Jul 11, 15:05 UTCJul 11, 16:35 UTC1h 30m
2026-07-11 WMU71 - Jul 11, 12:20 UTCJul 11, 13:35 UTC1h 15m
2026-07-11 WMU71 - Jul 11, 00:45 UTCJul 11, 02:20 UTC1h 35m
2026-07-10 WMU71 - Jul 10, 22:30 UTCJul 10, 23:40 UTC1h 10m
2026-07-10 WMU71 - Jul 10, 13:45 UTCJul 10, 14:05 UTC20m
2026-07-10 WMU71 - Jul 10, 13:05 UTCJul 10, 13:15 UTC10m
2026-07-09 WMU71 - Jul 9, 20:55 UTCJul 9, 21:40 UTC45m
2026-07-08 WMU71 - Jul 8, 23:15 UTCJul 9, 00:25 UTC1h 10m
2026-07-08 WMU71 - Jul 8, 22:10 UTCJul 8, 22:20 UTC10m
2026-07-08 WMU71 - Jul 8, 20:55 UTCJul 8, 21:25 UTC30m

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 N717WM page for operator, model, and routing details .

Mode-S A9980E frequently asked

What is Mode-S code A9980E?
A9980E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N717WM.
Where is Mode-S A9980E registered?
Mode-S code A9980E 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 A9980E broadcasting right now?
Yes. Mode-S A9980E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9980E, octal 52314016, decimal 11,114,510.
What flights does A9980E operate?
Mode-S A9980E has broadcast 1 distinct callsign, including WMU71.