sensors Mode-S transponder

AE4A25

ICAO 24-bit transponder address

Currently assigned to 166156 · Raytheon T-6B Texan II

Hex
AE4A25
Octal
53445045
Decimal
11,422,245
Tail
166156
Type
TEX2
No current signal · last broadcast 7h ago
Flights observed
108
Distinct callsigns
11
Country
-
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S AE4A25.

Callsign history 11 distinct

Callsign Airline Flights Last seen
BB156 - 36 2026-07-16
SH156 - 33 2026-07-18
RN156 - 30 2026-07-17
BB156Z - 2 2026-04-16
TEXN156 - 1 2026-05-28
SH227 - 1 2026-04-21
SH164 - 1 2026-05-16
SH156Z - 1 2026-05-19
RN229 - 1 2026-05-12
RN179 - 1 2026-05-18
RN142 - 1 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 SH156 - Jul 18, 01:20 UTCJul 18, 02:35 UTC1h 15m
2026-07-17 SH156 - Jul 17, 22:00 UTCJul 17, 23:25 UTC1h 25m
2026-07-17 RN156 - Jul 17, 16:19 UTCJul 17, 16:44 UTC25m
2026-07-17 RN142 - Jul 17, 12:50 UTCJul 17, 13:05 UTC15m
2026-07-16 SH156 - Jul 16, 16:49 UTCJul 16, 18:05 UTC1h 15m
2026-07-16 SH156 - Jul 16, 13:34 UTCJul 16, 14:55 UTC1h 20m
2026-07-16 BB156 - Jul 16, 01:10 UTCJul 16, 02:35 UTC1h 25m
2026-07-15 BB156 - Jul 15, 21:20 UTCJul 15, 22:30 UTC1h 10m
2026-07-15 RN156 - Jul 15, 14:50 UTCJul 15, 15:20 UTC30m
2026-07-15 RN156 - Jul 15, 12:40 UTCJul 15, 13:15 UTC35m
2026-07-14 SH156 - Jul 14, 13:10 UTCJul 14, 13:25 UTC15m
2026-07-13 RN156 - Jul 13, 17:05 UTCJul 13, 18:15 UTC1h 10m
2026-07-13 RN156 - Jul 13, 14:10 UTCJul 13, 14:55 UTC45m
2026-07-08 BB156 - Jul 8, 18:45 UTCJul 8, 19:45 UTC1h 0m
2026-07-07 BB156 - Jul 7, 15:15 UTCJul 7, 15:45 UTC30m
2026-07-07 BB156 - Jul 7, 13:15 UTCJul 7, 13:40 UTC25m
2026-07-07 BB156 - Jul 7, 12:20 UTCJul 7, 12:30 UTC10m
2026-06-30 RN156 - Jun 30, 23:45 UTCJul 1, 00:30 UTC45m
2026-06-30 RN156 - Jun 30, 20:25 UTCJun 30, 21:35 UTC1h 10m
2026-06-30 RN156 - Jun 30, 16:35 UTCJun 30, 17:00 UTC25m
2026-06-30 RN156 - Jun 30, 12:55 UTCJun 30, 13:30 UTC35m
2026-06-27 BB156 - Jun 27, 00:34 UTCJun 27, 01:44 UTC1h 10m
2026-06-26 BB156 - Jun 26, 21:04 UTCJun 26, 22:44 UTC1h 40m
2026-06-25 BB156 - Jun 25, 18:34 UTCJun 25, 19:09 UTC35m
2026-06-24 BB156 - Jun 24, 17:14 UTCJun 24, 17:45 UTC30m
2026-06-24 BB156 - Jun 24, 12:40 UTCJun 24, 13:00 UTC20m
2026-06-24 SH156 - Jun 24, 00:55 UTCJun 24, 02:24 UTC1h 30m
2026-06-23 SH156 - Jun 23, 21:24 UTCJun 23, 21:39 UTC15m
2026-06-23 SH156 - Jun 23, 20:29 UTCJun 23, 20:49 UTC20m
2026-06-22 RN156 - Jun 22, 19:19 UTCJun 22, 19:54 UTC35m
2026-06-22 RN156 - Jun 22, 16:45 UTCJun 22, 17:29 UTC45m
2026-06-22 RN156 - Jun 22, 13:29 UTCJun 22, 13:59 UTC30m
2026-06-12 RN156 - Jun 12, 21:00 UTCJun 12, 21:20 UTC20m
2026-06-12 RN156 - Jun 12, 17:30 UTCJun 12, 18:05 UTC35m
2026-06-11 BB156 - Jun 11, 19:10 UTCJun 11, 20:30 UTC1h 20m
2026-06-11 BB156 - Jun 11, 14:45 UTCJun 11, 16:00 UTC1h 15m
2026-06-10 RN156 - Jun 10, 18:30 UTCJun 10, 18:50 UTC20m
2026-06-10 RN156 - Jun 10, 15:55 UTCJun 10, 16:25 UTC30m
2026-06-09 BB156 - Jun 9, 16:45 UTCJun 9, 17:10 UTC25m
2026-06-09 BB156 - Jun 9, 13:10 UTCJun 9, 13:50 UTC40m
2026-06-09 SH156 - Jun 9, 02:50 UTCJun 9, 03:05 UTC15m
2026-06-08 SH156 - Jun 8, 23:10 UTCJun 9, 00:10 UTC1h 0m
2026-06-05 BB156 - Jun 5, 17:30 UTCJun 5, 18:15 UTC45m
2026-06-05 BB156 - Jun 5, 14:15 UTCJun 5, 15:05 UTC50m
2026-06-04 BB156 - Jun 4, 17:00 UTCJun 4, 17:45 UTC45m
2026-06-04 BB156 - Jun 4, 13:10 UTCJun 4, 13:45 UTC35m
2026-06-01 RN156 - Jun 1, 18:10 UTCJun 1, 18:35 UTC25m
2026-06-01 RN156 - Jun 1, 14:40 UTCJun 1, 15:10 UTC30m
2026-05-30 SH156 - May 30, 01:20 UTCMay 30, 02:10 UTC50m
2026-05-29 SH156 - May 29, 22:30 UTCMay 29, 22:50 UTC20m

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 166156 page for operator, model, and routing details .

Mode-S AE4A25 frequently asked

What is Mode-S code AE4A25?
AE4A25 is an ICAO 24-bit transponder address. Assigned to 166156.
Is AE4A25 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE4A25, octal 53445045, decimal 11,422,245.
What flights does AE4A25 operate?
Mode-S AE4A25 has broadcast 11 distinct callsigns, including BB156, SH156, RN156, BB156Z, TEXN156.