Apparatus

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sensors Mode-S transponder

AF841C

ICAO 24-bit transponder address

Currently assigned to 170112 · SIKORSKY UH-60 Black Hawk

Hex
AF841C
Octal
53702034
Decimal
11,502,620
Tail
170112
Type
H60
No current signal · last broadcast 3d ago
Flights observed
90
Distinct callsigns
7
Country
-
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S AF841C.

Callsign history 7 distinct

Callsign Airline Flights Last seen
SHWK400 - 62 2026-07-11
FFAB123 - 14 2026-07-10
SHWK401 - 6 2026-05-06
SHWK404 - 4 2026-06-10
SHWK413 - 2 2026-05-28
SHWK417 - 1 2026-05-28
FAB123 - 1 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 SHWK400 - Jul 11, 02:35 UTCJul 11, 04:01 UTC1h 25m
2026-07-11 SHWK400 NZY → NZY Jul 11, 00:00 UTCJul 11, 02:30 UTC2h 30m
2026-07-10 SHWK400 NZY → NZY Jul 10, 21:30 UTCJul 10, 23:15 UTC1h 45m
2026-07-10 SHWK400 - Jul 10, 19:00 UTCJul 10, 20:55 UTC1h 55m
2026-07-10 SHWK400 NZY → NZY Jul 10, 16:10 UTCJul 10, 18:30 UTC2h 20m
2026-07-10 FFAB123 NZY → NZY Jul 10, 03:10 UTCJul 10, 05:15 UTC2h 5m
2026-07-10 FFAB123 NZY → NZY Jul 10, 01:20 UTCJul 10, 02:50 UTC1h 30m
2026-07-09 FFAB123 - Jul 9, 23:55 UTCJul 10, 00:50 UTC55m
2026-07-09 FFAB123 - Jul 9, 22:00 UTCJul 9, 23:50 UTC1h 50m
2026-07-09 SHWK400 - Jul 9, 02:55 UTCJul 9, 04:30 UTC1h 35m
2026-07-09 SHWK400 NZY → NZY Jul 9, 00:55 UTCJul 9, 02:50 UTC1h 55m
2026-07-08 SHWK400 - Jul 8, 22:30 UTCJul 9, 00:15 UTC1h 45m
2026-07-08 SHWK400 NZY → NZY Jul 8, 20:25 UTCJul 8, 22:25 UTC2h 0m
2026-06-30 SHWK400 - Jun 30, 05:30 UTCJun 30, 07:10 UTC1h 40m
2026-06-30 SHWK400 NZY → NZY Jun 30, 03:10 UTCJun 30, 05:25 UTC2h 15m
2026-06-30 SHWK400 - Jun 30, 00:30 UTCJun 30, 02:40 UTC2h 10m
2026-06-29 SHWK400 NRS → NZY Jun 29, 23:34 UTCJun 30, 00:25 UTC50m
2026-06-29 SHWK400 NZY → NRS Jun 29, 22:49 UTCJun 29, 23:25 UTC35m
2026-06-29 SHWK400 NZY → NZY Jun 29, 20:15 UTCJun 29, 21:54 UTC1h 40m
2026-06-11 SHWK400 - Jun 11, 04:10 UTCJun 11, 05:25 UTC1h 15m
2026-06-11 SHWK400 - Jun 11, 01:55 UTCJun 11, 03:40 UTC1h 45m
2026-06-10 SHWK400 - Jun 10, 23:40 UTCJun 11, 01:20 UTC1h 40m
2026-06-10 SHWK400 - Jun 10, 20:50 UTCJun 10, 22:50 UTC2h 0m
2026-06-10 SHWK400 NZY → NZY Jun 10, 18:10 UTCJun 10, 20:25 UTC2h 15m
2026-06-10 SHWK400 NZY → NZY Jun 10, 15:15 UTCJun 10, 17:35 UTC2h 20m
2026-06-10 SHWK404 - Jun 10, 02:25 UTCJun 10, 04:20 UTC1h 55m
2026-06-10 SHWK404 NZY → NZY Jun 10, 00:25 UTCJun 10, 02:10 UTC1h 45m
2026-06-09 SHWK404 NZY → NZY Jun 9, 22:15 UTCJun 9, 23:45 UTC1h 30m
2026-06-09 SHWK404 NZY → NZY Jun 9, 20:10 UTCJun 9, 21:40 UTC1h 30m
2026-06-05 SHWK400 - Jun 5, 03:05 UTCJun 5, 04:35 UTC1h 30m
2026-06-05 SHWK400 - Jun 5, 01:20 UTCJun 5, 02:35 UTC1h 15m
2026-06-04 FFAB123 - Jun 4, 23:25 UTCJun 4, 23:30 UTC5m
2026-06-04 FFAB123 - Jun 4, 21:00 UTCJun 4, 22:45 UTC1h 45m
2026-06-04 FFAB123 NZY → NZY Jun 4, 20:45 UTCJun 4, 20:50 UTC5m
2026-06-04 SHWK400 NZY → NZY Jun 4, 03:35 UTCJun 4, 06:40 UTC3h 5m
2026-06-03 SHWK400 NZY → NZY Jun 3, 21:55 UTCJun 4, 02:00 UTC4h 5m
2026-06-03 FFAB123 - Jun 3, 19:45 UTCJun 3, 21:05 UTC1h 20m
2026-06-03 FFAB123 NZY → NZY Jun 3, 17:15 UTCJun 3, 19:25 UTC2h 10m
2026-05-29 SHWK400 NZY → NZY May 29, 03:25 UTCMay 29, 05:25 UTC2h 0m
2026-05-29 SHWK400 NZY → NZY May 29, 01:40 UTCMay 29, 02:45 UTC1h 5m
2026-05-29 SHWK400 NZY → NZY May 29, 00:15 UTCMay 29, 01:15 UTC1h 0m
2026-05-28 SHWK400 - May 28, 22:45 UTCMay 28, 23:25 UTC40m
2026-05-28 SHWK400 - May 28, 21:35 UTCMay 28, 21:50 UTC15m
2026-05-28 SHWK400 NZY → NZY May 28, 19:15 UTCMay 28, 21:05 UTC1h 50m
2026-05-28 SHWK417 NZY → NZY May 28, 17:45 UTCMay 28, 18:50 UTC1h 5m
2026-05-28 SHWK413 NZY → NZY May 28, 02:45 UTCMay 28, 04:20 UTC1h 35m
2026-05-28 SHWK413 - May 28, 02:05 UTCMay 28, 02:35 UTC30m
2026-05-27 SHWK400 NZY → NZY May 27, 21:50 UTCMay 27, 23:25 UTC1h 35m
2026-05-27 FAB123 NZY → NZY May 27, 19:00 UTCMay 27, 21:10 UTC2h 10m
2026-05-21 FFAB123 NZY → NZY May 21, 05:15 UTCMay 21, 06:45 UTC1h 30m

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 170112 page for operator, model, and routing details .

Mode-S AF841C frequently asked

What is Mode-S code AF841C?
AF841C is an ICAO 24-bit transponder address. Assigned to 170112.
Is AF841C broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AF841C, octal 53702034, decimal 11,502,620.
What flights does AF841C operate?
Mode-S AF841C has broadcast 7 distinct callsigns, including SHWK400, FFAB123, SHWK401, SHWK404, SHWK413.