sensors Mode-S transponder

AE4CFB

ICAO 24-bit transponder address

Currently assigned to 10-27027 · Alenia C-27J Spartan

Hex
AE4CFB
Octal
53446373
Decimal
11,422,971
Tail
10-27027
Type
C27J
No current signal · last broadcast 14h ago
Flights observed
48
Distinct callsigns
4
Country
-
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S AE4CFB.

Callsign history 4 distinct

Callsign Airline Flights Last seen
GECKO31 - 19 2026-07-17
DESERT7 - 18 2026-06-29
GECKO71 - 6 2026-05-31
GECKO77 - 3 2026-04-27

Recent flights last 48

DateFlightRouteTakeoffLandingDuration
2026-07-17 GECKO31 - Jul 17, 22:25 UTCJul 17, 23:14 UTC50m
2026-07-17 - - Jul 17, 20:04 UTCJul 17, 20:35 UTC30m
2026-07-17 GECKO31 - Jul 17, 16:44 UTCJul 17, 17:40 UTC55m
2026-07-16 GECKO31 - Jul 16, 22:10 UTCJul 16, 22:45 UTC35m
2026-07-16 GECKO31 - Jul 16, 19:05 UTCJul 16, 19:30 UTC25m
2026-07-16 GECKO31 - Jul 16, 16:40 UTCJul 16, 17:10 UTC30m
2026-07-16 GECKO31 - Jul 16, 13:34 UTCJul 16, 14:35 UTC1h 0m
2026-07-15 GECKO31 - Jul 15, 16:05 UTCJul 15, 16:15 UTC10m
2026-07-15 GECKO31 - Jul 15, 14:30 UTCJul 15, 14:55 UTC25m
2026-07-15 GECKO31 - Jul 15, 13:45 UTCJul 15, 13:50 UTC5m
2026-07-13 GECKO31 - Jul 13, 19:00 UTCJul 13, 21:10 UTC2h 10m
2026-07-13 GECKO31 POB → HOP Jul 13, 16:30 UTCJul 13, 18:15 UTC1h 45m
2026-06-29 DESERT7 - Jun 29, 20:49 UTCJun 29, 23:19 UTC2h 30m
2026-06-29 DESERT7 - Jun 29, 14:54 UTCJun 29, 19:24 UTC4h 30m
2026-06-26 DESERT7 - Jun 26, 14:50 UTCJun 26, 17:00 UTC2h 10m
2026-06-25 DESERT7 - Jun 25, 16:09 UTCJun 25, 16:20 UTC10m
2026-06-25 DESERT7 - Jun 25, 15:10 UTCJun 25, 15:34 UTC25m
2026-06-24 DESERT7 - Jun 24, 15:44 UTCJun 24, 18:29 UTC2h 45m
2026-06-23 DESERT7 - Jun 23, 15:44 UTCJun 23, 18:29 UTC2h 45m
2026-06-22 DESERT7 - Jun 22, 15:24 UTCJun 22, 18:09 UTC2h 45m
2026-06-18 DESERT7 - Jun 18, 18:00 UTCJun 18, 20:00 UTC2h 0m
2026-06-18 DESERT7 - Jun 18, 16:25 UTCJun 18, 17:21 UTC56m
2026-06-18 DESERT7 - Jun 18, 00:10 UTCJun 18, 01:40 UTC1h 30m
2026-06-17 DESERT7 - Jun 17, 19:20 UTCJun 17, 22:40 UTC3h 20m
2026-06-16 DESERT7 - Jun 16, 17:00 UTCJun 16, 19:40 UTC2h 40m
2026-06-14 DESERT7 - Jun 14, 18:50 UTCJun 14, 19:40 UTC50m
2026-06-14 DESERT7 - Jun 14, 16:00 UTCJun 14, 16:45 UTC45m
2026-06-04 DESERT7 - Jun 4, 14:40 UTCJun 4, 16:55 UTC2h 15m
2026-06-03 DESERT7 COS → COS Jun 3, 17:40 UTCJun 3, 20:05 UTC2h 25m
2026-06-03 DESERT7 COS → COS Jun 3, 14:25 UTCJun 3, 16:40 UTC2h 15m
2026-05-31 GECKO71 - May 31, 12:15 UTCMay 31, 17:25 UTC5h 10m
2026-04-30 GECKO71 - Apr 30, 21:20 UTCApr 30, 21:30 UTC10m
2026-04-30 GECKO71 - Apr 30, 18:30 UTCApr 30, 19:00 UTC30m
2026-04-30 - - Apr 30, 16:40 UTCApr 30, 17:15 UTC35m
2026-04-30 GECKO71 - Apr 30, 11:30 UTCApr 30, 11:40 UTC10m
2026-04-30 GECKO31 - Apr 30, 00:30 UTCApr 30, 00:55 UTC25m
2026-04-28 GECKO31 - Apr 28, 12:05 UTCApr 28, 14:35 UTC2h 30m
2026-04-27 GECKO77 - Apr 27, 18:10 UTCApr 27, 19:35 UTC1h 25m
2026-04-27 GECKO77 - Apr 27, 13:45 UTCApr 27, 15:00 UTC1h 15m
2026-04-24 GECKO77 - Apr 24, 12:00 UTCApr 24, 15:15 UTC3h 15m
2026-04-23 GECKO31 - Apr 23, 12:20 UTCApr 23, 16:00 UTC3h 40m
2026-04-14 GECKO31 - Apr 14, 18:55 UTCApr 14, 19:10 UTC15m
2026-04-14 GECKO31 - Apr 14, 17:25 UTCApr 14, 18:45 UTC1h 20m
2026-04-14 GECKO31 - Apr 14, 13:20 UTCApr 14, 13:55 UTC35m
2026-04-14 GECKO31 - Apr 14, 10:50 UTCApr 14, 12:35 UTC1h 45m
2026-04-14 GECKO31 - Apr 14, 10:40 UTCApr 14, 11:05 UTC25m
2026-04-13 GECKO71 - Apr 13, 15:50 UTCApr 13, 16:10 UTC20m
2026-04-13 GECKO71 - Apr 13, 15:10 UTCApr 13, 16:10 UTC1h 0m

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 10-27027 page for operator, model, and routing details .

Mode-S AE4CFB frequently asked

What is Mode-S code AE4CFB?
AE4CFB is an ICAO 24-bit transponder address. Assigned to 10-27027.
Is AE4CFB broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE4CFB, octal 53446373, decimal 11,422,971.
What flights does AE4CFB operate?
Mode-S AE4CFB has broadcast 4 distinct callsigns, including GECKO31, DESERT7, GECKO71, GECKO77.