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sensors Mode-S transponder

ABAEAD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8519L · PIPER PA-25 Pawnee · operated by CHICAGO GLIDER CLUB

Hex
ABAEAD
Octal
52727255
Decimal
11,251,373
Country
US
Tail
N8519L
Type
PA25
No current signal · last broadcast Jul 26, 18:20 UTC
Flights observed
63
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 18:20 UTC

Last known position

Most recent position reported by Mode-S ABAEAD.

Country allocation

The ICAO 24-bit address ABAEAD 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
N8519L - 63 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N8519L - Jul 26, 16:15 UTCJul 26, 18:20 UTC2h 5m
2026-07-24 N8519L - Jul 24, 19:40 UTCJul 24, 19:55 UTC15m
2026-07-22 N8519L - Jul 22, 19:40 UTCJul 22, 19:50 UTC10m
2026-07-22 N8519L - Jul 22, 18:10 UTCJul 22, 18:40 UTC30m
2026-07-19 N8519L - Jul 19, 21:05 UTCJul 19, 21:15 UTC10m
2026-07-19 N8519L - Jul 19, 18:25 UTCJul 19, 19:00 UTC35m
2026-07-16 N8519L - Jul 16, 18:25 UTCJul 16, 18:34 UTC10m
2026-07-16 N8519L - Jul 16, 15:55 UTCJul 16, 16:55 UTC1h 0m
2026-07-15 N8519L - Jul 15, 14:55 UTCJul 15, 15:40 UTC45m
2026-07-14 N8519L - Jul 14, 18:15 UTCJul 14, 19:00 UTC45m
2026-07-14 N8519L - Jul 14, 15:35 UTCJul 14, 16:20 UTC45m
2026-07-13 N8519L - Jul 13, 19:30 UTCJul 13, 19:40 UTC10m
2026-07-13 N8519L - Jul 13, 18:40 UTCJul 13, 18:50 UTC10m
2026-07-13 N8519L - Jul 13, 15:50 UTCJul 13, 16:50 UTC1h 0m
2026-07-12 N8519L - Jul 12, 21:45 UTCJul 12, 22:00 UTC15m
2026-07-12 N8519L - Jul 12, 20:20 UTCJul 12, 21:00 UTC40m
2026-07-12 N8519L - Jul 12, 18:01 UTCJul 12, 19:50 UTC1h 50m
2026-07-12 N8519L - Jul 12, 16:45 UTCJul 12, 17:15 UTC30m
2026-07-11 N8519L - Jul 11, 21:45 UTCJul 11, 22:15 UTC30m
2026-07-11 N8519L - Jul 11, 17:20 UTCJul 11, 20:50 UTC3h 30m
2026-07-08 N8519L - Jul 8, 22:30 UTCJul 8, 23:20 UTC50m
2026-07-08 N8519L - Jul 8, 21:45 UTCJul 8, 21:55 UTC10m
2026-07-08 N8519L - Jul 8, 20:00 UTCJul 8, 20:10 UTC10m
2026-07-08 N8519L - Jul 8, 16:40 UTCJul 8, 16:50 UTC10m
2026-07-07 N8519L - Jul 7, 17:35 UTCJul 7, 19:35 UTC2h 0m
2026-07-04 N8519L - Jul 4, 17:15 UTCJul 4, 19:50 UTC2h 35m
2026-07-01 N8519L - Jul 1, 16:15 UTCJul 1, 16:25 UTC10m
2026-06-28 N8519L - Jun 28, 19:29 UTCJun 28, 21:30 UTC2h 0m
2026-06-28 N8519L - Jun 28, 17:04 UTCJun 28, 18:59 UTC1h 55m
2026-06-27 N8519L - Jun 27, 20:59 UTCJun 27, 21:10 UTC10m
2026-06-27 N8519L - Jun 27, 17:14 UTCJun 27, 18:24 UTC1h 10m
2026-06-26 N8519L - Jun 26, 18:04 UTCJun 26, 19:14 UTC1h 10m
2026-06-20 N8519L - Jun 20, 17:39 UTCJun 20, 20:00 UTC2h 20m
2026-06-20 N8519L - Jun 20, 16:19 UTCJun 20, 16:29 UTC10m
2026-06-20 N8519L - Jun 20, 15:29 UTCJun 20, 15:39 UTC10m
2026-06-19 N8519L - Jun 19, 18:05 UTCJun 19, 19:45 UTC1h 40m
2026-06-07 N8519L - Jun 7, 16:40 UTCJun 7, 19:00 UTC2h 20m
2026-06-06 N8519L - Jun 6, 21:44 UTCJun 6, 21:54 UTC10m
2026-06-06 N8519L - Jun 6, 21:00 UTCJun 6, 21:09 UTC10m
2026-06-06 N8519L - Jun 6, 17:44 UTCJun 6, 17:54 UTC10m
2026-06-02 N8519L - Jun 2, 18:00 UTCJun 2, 18:40 UTC40m
2026-05-31 N8519L - May 31, 20:40 UTCMay 31, 21:25 UTC45m
2026-05-31 N8519L - May 31, 18:40 UTCMay 31, 19:55 UTC1h 15m
2026-05-31 N8519L - May 31, 17:40 UTCMay 31, 18:10 UTC30m
2026-05-31 N8519L - May 31, 16:15 UTCMay 31, 17:10 UTC55m
2026-05-30 N8519L - May 30, 17:20 UTCMay 30, 21:20 UTC4h 0m
2026-05-30 N8519L - May 30, 16:00 UTCMay 30, 16:45 UTC45m
2026-05-25 N8519L - May 25, 17:25 UTCMay 25, 18:10 UTC45m
2026-05-25 N8519L - May 25, 15:35 UTCMay 25, 16:20 UTC45m
2026-05-24 N8519L - May 24, 23:10 UTCMay 24, 23:20 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 N8519L page for operator, model, and routing details .

Mode-S ABAEAD frequently asked

What is Mode-S code ABAEAD?
ABAEAD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8519L.
Where is Mode-S ABAEAD registered?
Mode-S code ABAEAD 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 ABAEAD broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABAEAD, octal 52727255, decimal 11,251,373.
What flights does ABAEAD operate?
Mode-S ABAEAD has broadcast 1 distinct callsign, including N8519L.