sensors Mode-S transponder

AE4FF6

ICAO 24-bit transponder address

Currently assigned to 168166 · SIKORSKY UH-60 Black Hawk

Hex
AE4FF6
Octal
53447766
Decimal
11,423,734
Tail
168166
Type
H60
No current signal · last broadcast 1d ago
Flights observed
38
Distinct callsigns
2
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AE4FF6.

Callsign history 2 distinct

Callsign Airline Flights Last seen
BT706 - 34 2026-05-29
FFAB123 - 4 2026-04-30

Recent flights last 38

DateFlightRouteTakeoffLandingDuration
2026-05-29 BT706 - May 29, 04:35 UTCMay 29, 05:35 UTC1h 0m
2026-05-29 BT706 - May 29, 02:55 UTCMay 29, 03:15 UTC20m
2026-05-28 BT706 - May 28, 23:50 UTCMay 29, 02:20 UTC2h 30m
2026-05-28 BT706 NZY → NZY May 28, 20:00 UTCMay 28, 23:10 UTC3h 10m
2026-05-28 BT706 NZY → NZY May 28, 17:00 UTCMay 28, 19:45 UTC2h 45m
2026-05-27 BT706 NZY → NZY May 27, 02:39 UTCMay 27, 05:24 UTC2h 45m
2026-05-26 BT706 - May 26, 23:25 UTCMay 27, 02:04 UTC2h 40m
2026-05-26 BT706 NRS → NZY May 26, 21:55 UTCMay 26, 22:54 UTC1h 0m
2026-05-26 BT706 NZY → NRS May 26, 21:14 UTCMay 26, 21:49 UTC35m
2026-05-19 BT706 - May 19, 20:45 UTCMay 20, 05:35 UTC8h 51m
2026-05-19 BT706 - May 19, 17:00 UTCMay 19, 19:45 UTC2h 45m
2026-05-18 BT706 - May 18, 20:55 UTCMay 18, 21:35 UTC40m
2026-05-14 BT706 - May 14, 01:05 UTCMay 14, 02:20 UTC1h 15m
2026-05-13 BT706 - May 13, 23:40 UTCMay 13, 23:55 UTC15m
2026-05-13 BT706 - May 13, 20:35 UTCMay 13, 23:05 UTC2h 30m
2026-05-13 BT706 - May 13, 19:25 UTCMay 13, 19:45 UTC20m
2026-05-13 BT706 - May 13, 16:55 UTCMay 13, 18:35 UTC1h 40m
2026-04-30 FFAB123 NZY → NZY Apr 30, 22:25 UTCMay 1, 00:45 UTC2h 20m
2026-04-30 BT706 - Apr 30, 19:55 UTCApr 30, 20:40 UTC45m
2026-04-30 BT706 - Apr 30, 16:55 UTCApr 30, 17:25 UTC30m
2026-04-23 BT706 - Apr 23, 20:20 UTCApr 24, 05:25 UTC9h 5m
2026-04-23 FFAB123 - Apr 23, 19:10 UTCApr 23, 19:50 UTC40m
2026-04-23 FFAB123 - Apr 23, 17:00 UTCApr 23, 17:15 UTC15m
2026-04-17 BT706 - Apr 17, 04:15 UTCApr 17, 05:05 UTC51m
2026-04-17 BT706 - Apr 17, 01:20 UTCApr 17, 03:10 UTC1h 50m
2026-04-16 BT706 NZY → NRS Apr 16, 23:40 UTCApr 17, 01:10 UTC1h 30m
2026-04-16 BT706 - Apr 16, 21:50 UTCApr 16, 23:05 UTC1h 15m
2026-04-16 BT706 - Apr 16, 21:14 UTCApr 16, 21:34 UTC20m
2026-04-16 BT706 - Apr 16, 20:25 UTCApr 16, 21:00 UTC35m
2026-04-16 BT706 - Apr 16, 19:20 UTCApr 16, 19:50 UTC30m
2026-04-16 FFAB123 - Apr 16, 17:54 UTCApr 16, 18:10 UTC15m
2026-04-15 BT706 - Apr 15, 02:55 UTCApr 15, 04:30 UTC1h 35m
2026-04-15 BT706 NZY → NKX Apr 15, 01:55 UTCApr 15, 02:50 UTC55m
2026-04-15 BT706 - Apr 15, 00:55 UTCApr 15, 01:15 UTC20m
2026-04-14 BT706 - Apr 14, 23:45 UTCApr 15, 00:50 UTC1h 5m
2026-04-14 BT706 - Apr 14, 21:05 UTCApr 14, 22:50 UTC1h 45m
2026-04-13 BT706 - Apr 13, 03:20 UTCApr 13, 03:35 UTC15m
2026-04-13 BT706 - Apr 13, 00:20 UTCApr 13, 00:45 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 168166 page for operator, model, and routing details .

Mode-S AE4FF6 frequently asked

What is Mode-S code AE4FF6?
AE4FF6 is an ICAO 24-bit transponder address. Assigned to 168166.
Is AE4FF6 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE4FF6, octal 53447766, decimal 11,423,734.
What flights does AE4FF6 operate?
Mode-S AE4FF6 has broadcast 2 distinct callsigns, including BT706, FFAB123.