Apparatus

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sensors Mode-S transponder

AE4E9F

ICAO 24-bit transponder address

Currently assigned to 166181 · Raytheon T-6B Texan II

Hex
AE4E9F
Octal
53447237
Decimal
11,423,391
Tail
166181
Type
TEX2
No current signal · last broadcast 1h ago
Flights observed
26
Distinct callsigns
4
Country
-
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AE4E9F.

Callsign history 4 distinct

Callsign Airline Flights Last seen
SH181 - 11 2026-06-10
BB181 - 10 2026-06-23
RN181 - 4 2026-06-22
RN181Z - 1 2026-06-02

Recent flights last 26

DateFlightRouteTakeoffLandingDuration
2026-06-23 BB181 - Jun 23, 01:10 UTCJun 23, 02:49 UTC1h 40m
2026-06-22 BB181 - Jun 22, 21:59 UTCJun 22, 23:29 UTC1h 30m
2026-06-22 RN181 - Jun 22, 14:45 UTCJun 22, 15:10 UTC25m
2026-06-15 RN181 - Jun 15, 18:45 UTCJun 15, 19:45 UTC1h 0m
2026-06-15 RN181 - Jun 15, 15:50 UTCJun 15, 16:45 UTC55m
2026-06-13 BB181 - Jun 13, 15:55 UTCJun 13, 16:30 UTC35m
2026-06-13 BB181 - Jun 13, 13:10 UTCJun 13, 13:45 UTC35m
2026-06-10 SH181 - Jun 10, 16:35 UTCJun 10, 18:05 UTC1h 30m
2026-06-10 SH181 - Jun 10, 13:25 UTCJun 10, 14:50 UTC1h 25m
2026-06-10 SH181 - Jun 10, 00:05 UTCJun 10, 01:05 UTC1h 0m
2026-06-09 SH181 - Jun 9, 21:10 UTCJun 9, 22:05 UTC55m
2026-06-09 SH181 - Jun 9, 15:35 UTCJun 9, 15:50 UTC15m
2026-06-09 SH181 - Jun 9, 12:50 UTCJun 9, 14:00 UTC1h 10m
2026-06-08 SH181 - Jun 8, 16:50 UTCJun 8, 18:05 UTC1h 15m
2026-06-08 SH181 - Jun 8, 13:25 UTCJun 8, 14:40 UTC1h 15m
2026-06-06 BB181 - Jun 6, 00:45 UTCJun 6, 01:55 UTC1h 10m
2026-06-05 BB181 - Jun 5, 22:00 UTCJun 5, 22:55 UTC55m
2026-06-05 BB181 - Jun 5, 15:15 UTCJun 5, 15:40 UTC25m
2026-06-03 SH181 - Jun 3, 17:10 UTCJun 3, 17:35 UTC25m
2026-06-03 SH181 - Jun 3, 13:50 UTCJun 3, 14:25 UTC35m
2026-06-02 RN181Z - Jun 2, 21:10 UTCJun 2, 21:35 UTC25m
2026-06-02 RN181 - Jun 2, 13:35 UTCJun 2, 14:20 UTC45m
2026-06-01 BB181 - Jun 1, 13:10 UTCJun 1, 13:35 UTC25m
2026-05-29 BB181 - May 29, 13:50 UTCMay 29, 14:00 UTC10m
2026-05-08 BB181 - May 8, 12:44 UTCMay 8, 13:05 UTC20m
2026-05-07 SH181 - May 7, 19:35 UTCMay 7, 20:00 UTC25m

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 166181 page for operator, model, and routing details .

Mode-S AE4E9F frequently asked

What is Mode-S code AE4E9F?
AE4E9F is an ICAO 24-bit transponder address. Assigned to 166181.
Is AE4E9F broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE4E9F, octal 53447237, decimal 11,423,391.
What flights does AE4E9F operate?
Mode-S AE4E9F has broadcast 4 distinct callsigns, including SH181, BB181, RN181, RN181Z.