Apparatus

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sensors Mode-S transponder

AE1DCF

ICAO 24-bit transponder address

Currently assigned to 166540

Hex
AE1DCF
Octal
53416717
Decimal
11,410,895
Tail
166540
Type
H60
No current signal · last broadcast 1h ago
Flights observed
32
Distinct callsigns
3
Country
-
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AE1DCF.

Callsign history 3 distinct

Callsign Airline Flights Last seen
SHWK434 - 22 2026-07-14
FFAB123 - 9 2026-07-13
SHK434 - 1 2026-06-15

Recent flights last 32

DateFlightRouteTakeoffLandingDuration
2026-07-14 SHWK434 - Jul 14, 05:45 UTCJul 14, 07:30 UTC1h 45m
2026-07-14 SHWK434 - Jul 14, 03:25 UTCJul 14, 05:00 UTC1h 35m
2026-07-14 SHWK434 NZY → NZY Jul 14, 01:20 UTCJul 14, 03:20 UTC2h 0m
2026-07-13 SHWK434 - Jul 13, 22:25 UTCJul 14, 00:10 UTC1h 45m
2026-07-13 FFAB123 NZY → NZY Jul 13, 20:10 UTCJul 13, 22:00 UTC1h 50m
2026-07-07 FFAB123 NZY → NZY Jul 7, 20:50 UTCJul 7, 21:20 UTC30m
2026-06-30 FFAB123 NZY → NRS Jun 30, 20:10 UTCJun 30, 20:30 UTC20m
2026-06-30 FFAB123 NZY → NZY Jun 30, 18:30 UTCJun 30, 19:20 UTC50m
2026-06-16 SHWK434 NZY → NZY Jun 16, 18:45 UTCJun 16, 20:45 UTC2h 1m
2026-06-16 FFAB123 NZY → NZY Jun 16, 01:35 UTCJun 16, 02:04 UTC30m
2026-06-15 SHK434 NZY → NZY Jun 15, 22:40 UTCJun 15, 23:45 UTC1h 5m
2026-05-09 SHWK434 NZY → NZY May 9, 02:40 UTCMay 9, 04:00 UTC1h 20m
2026-05-08 SHWK434 - May 8, 23:00 UTCMay 8, 23:40 UTC40m
2026-05-08 SHWK434 NZY → NZY May 8, 22:05 UTCMay 8, 22:45 UTC40m
2026-05-05 SHWK434 NZY → NZY May 5, 04:45 UTCMay 5, 06:25 UTC1h 40m
2026-05-05 SHWK434 NZY → NZY May 5, 02:45 UTCMay 5, 03:55 UTC1h 10m
2026-05-05 SHWK434 NZY → NZY May 5, 00:00 UTCMay 5, 01:50 UTC1h 50m
2026-05-04 SHWK434 NZY → NZY May 4, 21:50 UTCMay 4, 23:05 UTC1h 15m
2026-05-04 FFAB123 NZY → NZY May 4, 20:40 UTCMay 4, 21:35 UTC55m
2026-04-30 SHWK434 NZY → NZY Apr 30, 04:25 UTCApr 30, 06:00 UTC1h 35m
2026-04-30 SHWK434 NZY → NZY Apr 30, 02:10 UTCApr 30, 03:50 UTC1h 40m
2026-04-29 FFAB123 - Apr 29, 21:10 UTCApr 30, 01:30 UTC4h 19m
2026-04-29 FFAB123 NZY → NZY Apr 29, 19:05 UTCApr 29, 21:05 UTC2h 0m
2026-04-29 FFAB123 NZY → NZY Apr 29, 16:40 UTCApr 29, 18:25 UTC1h 45m
2026-04-21 SHWK434 - Apr 21, 04:50 UTCApr 21, 06:35 UTC1h 45m
2026-04-21 SHWK434 - Apr 21, 02:40 UTCApr 21, 04:10 UTC1h 30m
2026-04-21 SHWK434 NZY → NZY Apr 21, 00:35 UTCApr 21, 02:05 UTC1h 30m
2026-04-20 SHWK434 - Apr 20, 22:30 UTCApr 20, 23:50 UTC1h 20m
2026-04-20 SHWK434 NZY → NZY Apr 20, 20:45 UTCApr 20, 22:10 UTC1h 25m
2026-04-18 SHWK434 - Apr 18, 01:25 UTCApr 18, 01:35 UTC10m
2026-04-18 SHWK434 - Apr 18, 00:15 UTCApr 18, 01:20 UTC1h 5m
2026-04-14 SHWK434 NZY → NZY Apr 14, 15:10 UTCApr 14, 15:30 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 166540 page for operator, model, and routing details .

Mode-S AE1DCF frequently asked

What is Mode-S code AE1DCF?
AE1DCF is an ICAO 24-bit transponder address. Assigned to 166540.
Is AE1DCF 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 AE1DCF, octal 53416717, decimal 11,410,895.
What flights does AE1DCF operate?
Mode-S AE1DCF has broadcast 3 distinct callsigns, including SHWK434, FFAB123, SHK434.