sensors Mode-S transponder

AE59D2

ICAO 24-bit transponder address

Currently assigned to 14-08457 · BOEING-VERTOL CH-47 Chinook

Hex
AE59D2
Octal
53454722
Decimal
11,426,258
Tail
14-08457
Type
H47
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
2
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AE59D2.

Callsign history 2 distinct

Callsign Airline Flights Last seen
R08457 - 4 2026-04-13
EASY22 - 1 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 R08457 ILH → ILH Apr 13, 20:00 UTCApr 13, 20:50 UTC50m
2026-04-13 R08457 ILH → ILH Apr 13, 19:00 UTCApr 13, 20:10 UTC1h 10m
2026-04-13 R08457 - Apr 13, 15:50 UTCApr 13, 16:00 UTC10m
2026-04-13 R08457 - Apr 13, 15:05 UTCApr 13, 16:00 UTC55m
2026-04-13 EASY22 - Apr 13, 09:00 UTCApr 13, 10:15 UTC1h 15m

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 14-08457 page for operator, model, and routing details .

Mode-S AE59D2 frequently asked

What is Mode-S code AE59D2?
AE59D2 is an ICAO 24-bit transponder address. Assigned to 14-08457.
Is AE59D2 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE59D2, octal 53454722, decimal 11,426,258.
What flights does AE59D2 operate?
Mode-S AE59D2 has broadcast 2 distinct callsigns, including R08457, EASY22.