sensors Mode-S transponder

AE4D2E

ICAO 24-bit transponder address

Currently assigned to 168536

Hex
AE4D2E
Octal
53446456
Decimal
11,423,022
Tail
168536
Type
H60
No current signal · last broadcast 17h ago
Flights observed
16
Distinct callsigns
3
Country
-
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S AE4D2E.

Callsign history 3 distinct

Callsign Airline Flights Last seen
BT21 - 10 2026-05-20
NITE31 - 5 2026-05-20
NITE614 - 1 2026-05-13

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-05-20 NITE31 - May 20, 03:40 UTCMay 20, 04:55 UTC1h 16m
2026-05-20 NITE31 - May 20, 02:10 UTCMay 20, 02:25 UTC15m
2026-05-20 BT21 - May 20, 01:15 UTCMay 20, 01:55 UTC40m
2026-05-19 BT21 - May 19, 23:20 UTCMay 19, 23:35 UTC15m
2026-05-19 BT21 NZY → NZY May 19, 20:05 UTCMay 19, 22:25 UTC2h 20m
2026-05-19 BT21 - May 19, 05:35 UTCMay 19, 05:45 UTC10m
2026-05-19 BT21 - May 19, 02:15 UTCMay 19, 02:35 UTC20m
2026-05-19 BT21 NZY → NZY May 19, 00:05 UTCMay 19, 01:20 UTC1h 15m
2026-05-14 BT21 - May 14, 02:15 UTCMay 14, 05:15 UTC3h 0m
2026-05-14 BT21 - May 14, 00:45 UTCMay 14, 01:50 UTC1h 5m
2026-05-13 NITE31 - May 13, 22:50 UTCMay 14, 00:00 UTC1h 10m
2026-05-13 NITE614 - May 13, 19:30 UTCMay 13, 21:10 UTC1h 40m
2026-05-07 BT21 NZY → NZY May 7, 20:25 UTCMay 7, 20:45 UTC20m
2026-05-07 BT21 NZY → NZY May 7, 17:50 UTCMay 7, 18:40 UTC50m
2026-05-06 NITE31 NZY → NZY May 6, 23:40 UTCMay 7, 01:20 UTC1h 40m
2026-05-06 NITE31 NZY → NZY May 6, 20:30 UTCMay 6, 21:20 UTC50m

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 168536 page for operator, model, and routing details .

Mode-S AE4D2E frequently asked

What is Mode-S code AE4D2E?
AE4D2E is an ICAO 24-bit transponder address. Assigned to 168536.
Is AE4D2E broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE4D2E, octal 53446456, decimal 11,423,022.
What flights does AE4D2E operate?
Mode-S AE4D2E has broadcast 3 distinct callsigns, including BT21, NITE31, NITE614.