sensors Mode-S transponder

AE2691

ICAO 24-bit transponder address

Currently assigned to 6559 · Eurocopter MH-65D Dolphin

Hex
AE2691
Octal
53423221
Decimal
11,413,137
Tail
6559
Type
AS65
No current signal · last broadcast 2d ago
Flights observed
171
Distinct callsigns
1
Country
-
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S AE2691.

Callsign history 1 distinct

Callsign Airline Flights Last seen
C6559 - 171 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 C6559 - Jul 16, 02:15 UTCJul 16, 03:55 UTC1h 40m
2026-07-15 C6559 - Jul 15, 22:55 UTCJul 15, 23:20 UTC25m
2026-07-14 C6559 - Jul 14, 18:15 UTCJul 14, 18:50 UTC35m
2026-07-14 C6559 - Jul 14, 17:25 UTCJul 14, 17:45 UTC20m
2026-07-13 C6559 - Jul 13, 20:15 UTCJul 13, 21:00 UTC45m
2026-07-13 C6559 - Jul 13, 15:40 UTCJul 13, 17:05 UTC1h 25m
2026-07-10 C6559 - Jul 10, 17:25 UTCJul 10, 18:45 UTC1h 20m
2026-07-10 C6559 - Jul 10, 01:50 UTCJul 10, 03:35 UTC1h 45m
2026-07-08 C6559 - Jul 8, 10:50 UTCJul 8, 12:50 UTC2h 0m
2026-07-08 C6559 - Jul 8, 08:30 UTCJul 8, 10:10 UTC1h 40m
2026-07-08 C6559 - Jul 8, 07:20 UTCJul 8, 07:50 UTC30m
2026-07-08 C6559 - Jul 8, 06:00 UTCJul 8, 06:20 UTC20m
2026-07-08 C6559 - Jul 8, 00:50 UTCJul 8, 01:20 UTC30m
2026-07-07 C6559 - Jul 7, 17:45 UTCJul 7, 19:00 UTC1h 15m
2026-07-07 C6559 - Jul 7, 03:05 UTCJul 7, 04:45 UTC1h 40m
2026-07-06 C6559 - Jul 6, 20:45 UTCJul 6, 22:05 UTC1h 20m
2026-07-06 C6559 - Jul 6, 19:00 UTCJul 6, 19:40 UTC40m
2026-07-06 C6559 - Jul 6, 16:50 UTCJul 6, 17:35 UTC45m
2026-07-05 C6559 - Jul 5, 17:40 UTCJul 5, 17:50 UTC10m
2026-07-05 C6559 - Jul 5, 16:25 UTCJul 5, 17:00 UTC35m
2026-07-04 C6559 - Jul 4, 19:15 UTCJul 4, 19:25 UTC10m
2026-07-04 C6559 - Jul 4, 16:45 UTCJul 4, 18:55 UTC2h 10m
2026-07-03 C6559 - Jul 3, 23:55 UTCJul 4, 01:35 UTC1h 40m
2026-07-02 C6559 - Jul 2, 19:30 UTCJul 2, 21:10 UTC1h 40m
2026-07-02 C6559 - Jul 2, 16:50 UTCJul 2, 18:20 UTC1h 30m
2026-07-01 C6559 - Jul 1, 19:55 UTCJul 1, 21:05 UTC1h 10m
2026-07-01 C6559 - Jul 1, 15:20 UTCJul 1, 16:15 UTC55m
2026-07-01 C6559 - Jul 1, 02:40 UTCJul 1, 03:55 UTC1h 15m
2026-06-30 C6559 - Jun 30, 04:30 UTCJun 30, 05:05 UTC35m
2026-06-30 C6559 - Jun 30, 03:20 UTCJun 30, 03:45 UTC25m
2026-06-29 C6559 - Jun 29, 17:34 UTCJun 29, 18:10 UTC35m
2026-06-29 C6559 - Jun 29, 15:39 UTCJun 29, 16:19 UTC40m
2026-06-29 C6559 - Jun 29, 03:29 UTCJun 29, 05:15 UTC1h 45m
2026-06-28 C6559 - Jun 28, 19:29 UTCJun 28, 19:49 UTC20m
2026-06-28 C6559 - Jun 28, 19:09 UTCJun 28, 19:25 UTC15m
2026-06-28 C6559 - Jun 28, 18:10 UTCJun 28, 18:29 UTC20m
2026-06-28 C6559 - Jun 28, 01:15 UTCJun 28, 02:54 UTC1h 40m
2026-06-26 C6559 - Jun 26, 20:55 UTCJun 26, 22:29 UTC1h 35m
2026-06-26 C6559 - Jun 26, 17:00 UTCJun 26, 18:24 UTC1h 25m
2026-06-25 C6559 - Jun 25, 19:49 UTCJun 25, 21:35 UTC1h 45m
2026-06-25 C6559 - Jun 25, 17:20 UTCJun 25, 18:50 UTC1h 30m
2026-06-25 C6559 - Jun 25, 01:19 UTCJun 25, 01:30 UTC10m
2026-06-25 C6559 - Jun 25, 00:14 UTCJun 25, 01:14 UTC1h 0m
2026-06-24 C6559 - Jun 24, 18:25 UTCJun 24, 19:24 UTC1h 0m
2026-06-23 C6559 - Jun 23, 19:15 UTCJun 23, 21:10 UTC1h 55m
2026-06-23 C6559 - Jun 23, 03:29 UTCJun 23, 04:25 UTC55m
2026-06-22 C6559 - Jun 22, 19:54 UTCJun 22, 20:19 UTC25m
2026-06-22 C6559 - Jun 22, 17:44 UTCJun 22, 18:04 UTC20m
2026-06-21 C6559 - Jun 21, 18:00 UTCJun 21, 19:05 UTC1h 5m
2026-06-20 C6559 - Jun 20, 13:29 UTCJun 20, 14:35 UTC1h 5m

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 6559 page for operator, model, and routing details .

Mode-S AE2691 frequently asked

What is Mode-S code AE2691?
AE2691 is an ICAO 24-bit transponder address. Assigned to 6559.
Is AE2691 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE2691, octal 53423221, decimal 11,413,137.
What flights does AE2691 operate?
Mode-S AE2691 has broadcast 1 distinct callsign, including C6559.