Apparatus

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sensors Mode-S transponder

A9BE5F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N727JK · CIRRUS SR-22 · operated by SKY 21 LLC

Hex
A9BE5F
Octal
52337137
Decimal
11,124,319
Country
US
Tail
N727JK
Type
SR22
No current signal · last broadcast 3h ago
Flights observed
62
Distinct callsigns
1
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A9BE5F.

Country allocation

The ICAO 24-bit address A9BE5F falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N727JK - 62 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 N727JK - Jul 8, 14:30 UTCJul 8, 15:20 UTC50m
2026-07-08 N727JK - Jul 8, 12:25 UTCJul 8, 13:05 UTC40m
2026-07-07 N727JK - Jul 7, 12:50 UTCJul 7, 13:30 UTC40m
2026-07-07 N727JK - Jul 7, 11:30 UTCJul 7, 12:05 UTC35m
2026-07-06 N727JK - Jul 6, 12:55 UTCJul 6, 13:40 UTC45m
2026-07-04 N727JK - Jul 4, 00:35 UTCJul 4, 01:15 UTC40m
2026-07-03 N727JK - Jul 3, 21:05 UTCJul 3, 21:30 UTC25m
2026-07-03 N727JK - Jul 3, 19:20 UTCJul 3, 20:05 UTC45m
2026-07-02 N727JK - Jul 2, 16:40 UTCJul 2, 17:10 UTC30m
2026-07-02 N727JK - Jul 2, 14:40 UTCJul 2, 15:20 UTC40m
2026-07-01 N727JK - Jul 1, 20:45 UTCJul 1, 21:15 UTC30m
2026-07-01 N727JK - Jul 1, 15:35 UTCJul 1, 15:55 UTC20m
2026-06-29 N727JK - Jun 29, 12:05 UTCJun 29, 12:34 UTC30m
2026-06-29 N727JK - Jun 29, 09:50 UTCJun 29, 10:29 UTC40m
2026-06-27 N727JK - Jun 27, 04:44 UTCJun 27, 05:29 UTC45m
2026-06-27 N727JK - Jun 27, 00:44 UTCJun 27, 01:49 UTC1h 5m
2026-06-25 N727JK - Jun 25, 20:34 UTCJun 25, 21:05 UTC30m
2026-06-25 N727JK - Jun 25, 18:50 UTCJun 25, 19:29 UTC40m
2026-06-24 N727JK - Jun 24, 21:50 UTCJun 24, 22:25 UTC35m
2026-06-24 N727JK - Jun 24, 19:44 UTCJun 24, 20:35 UTC50m
2026-06-24 N727JK - Jun 24, 17:55 UTCJun 24, 18:09 UTC15m
2026-06-24 N727JK - Jun 24, 14:34 UTCJun 24, 15:00 UTC25m
2026-06-24 N727JK - Jun 24, 11:09 UTCJun 24, 11:34 UTC25m
2026-06-22 N727JK - Jun 22, 15:59 UTCJun 22, 16:29 UTC30m
2026-06-22 N727JK - Jun 22, 13:49 UTCJun 22, 14:34 UTC45m
2026-06-21 N727JK - Jun 21, 00:34 UTCJun 21, 02:20 UTC1h 45m
2026-06-20 N727JK - Jun 20, 20:00 UTCJun 20, 20:25 UTC25m
2026-06-20 N727JK - Jun 20, 17:44 UTCJun 20, 18:54 UTC1h 10m
2026-06-16 N727JK - Jun 16, 15:40 UTCJun 16, 16:10 UTC30m
2026-06-16 N727JK - Jun 16, 13:15 UTCJun 16, 13:50 UTC35m
2026-06-14 N727JK - Jun 14, 15:55 UTCJun 14, 16:20 UTC25m
2026-06-14 N727JK - Jun 14, 13:00 UTCJun 14, 13:45 UTC45m
2026-06-14 N727JK - Jun 14, 00:15 UTCJun 14, 00:40 UTC25m
2026-06-13 N727JK - Jun 13, 17:00 UTCJun 13, 17:40 UTC40m
2026-06-12 N727JK - Jun 12, 16:45 UTCJun 12, 17:15 UTC30m
2026-06-12 N727JK - Jun 12, 14:15 UTCJun 12, 14:55 UTC40m
2026-06-12 N727JK - Jun 12, 00:45 UTCJun 12, 01:30 UTC45m
2026-06-11 N727JK - Jun 11, 22:55 UTCJun 11, 23:40 UTC45m
2026-06-11 N727JK - Jun 11, 19:15 UTCJun 11, 19:45 UTC30m
2026-06-11 N727JK - Jun 11, 16:45 UTCJun 11, 17:20 UTC35m
2026-06-10 N727JK - Jun 10, 16:40 UTCJun 10, 17:25 UTC45m
2026-06-10 N727JK - Jun 10, 12:50 UTCJun 10, 13:30 UTC40m
2026-06-05 N727JK - Jun 5, 02:05 UTCJun 5, 02:50 UTC45m
2026-06-05 N727JK - Jun 5, 00:20 UTCJun 5, 01:10 UTC50m
2026-05-14 N727JK - May 14, 15:40 UTCMay 14, 16:30 UTC50m
2026-05-14 N727JK - May 14, 12:15 UTCMay 14, 13:01 UTC45m
2026-05-08 N727JK - May 8, 00:05 UTCMay 8, 02:29 UTC2h 25m
2026-05-07 N727JK - May 7, 10:55 UTCMay 7, 13:00 UTC2h 5m
2026-05-04 N727JK - May 4, 16:30 UTCMay 4, 17:40 UTC1h 10m
2026-05-04 N727JK - May 4, 11:25 UTCMay 4, 14:45 UTC3h 20m

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 N727JK page for operator, model, and routing details .

Mode-S A9BE5F frequently asked

What is Mode-S code A9BE5F?
A9BE5F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N727JK.
Where is Mode-S A9BE5F registered?
Mode-S code A9BE5F is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A9BE5F broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9BE5F, octal 52337137, decimal 11,124,319.
What flights does A9BE5F operate?
Mode-S A9BE5F has broadcast 1 distinct callsign, including N727JK.