sensors Mode-S transponder

A89F81

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N655CB · CIRRUS SR-22T Turbo · operated by JLALA LLC

Hex
A89F81
Octal
52117601
Decimal
11,050,881
Country
US
Tail
N655CB
Type
S22T
No current signal · last broadcast 10h ago
Flights observed
37
Distinct callsigns
1
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S A89F81.

Country allocation

The ICAO 24-bit address A89F81 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
N655CB - 37 2026-06-16

Recent flights last 37

DateFlightRouteTakeoffLandingDuration
2026-06-16 N655CB - Jun 16, 19:00 UTCJun 16, 21:20 UTC2h 21m
2026-06-16 N655CB - Jun 16, 00:29 UTCJun 16, 02:29 UTC2h 0m
2026-06-14 N655CB - Jun 14, 15:55 UTCJun 14, 20:10 UTC4h 15m
2026-06-13 N655CB - Jun 13, 14:05 UTCJun 13, 17:30 UTC3h 25m
2026-06-11 N655CB - Jun 11, 17:15 UTCJun 11, 18:30 UTC1h 15m
2026-06-10 N655CB - Jun 10, 18:35 UTCJun 10, 19:55 UTC1h 20m
2026-06-09 N655CB - Jun 9, 02:10 UTCJun 9, 03:20 UTC1h 10m
2026-06-07 N655CB - Jun 7, 22:00 UTCJun 7, 23:15 UTC1h 15m
2026-05-28 N655CB - May 28, 23:50 UTCMay 29, 03:15 UTC3h 25m
2026-05-28 N655CB - May 28, 20:20 UTCMay 28, 22:10 UTC1h 50m
2026-05-27 N655CB - May 27, 13:25 UTCMay 27, 15:55 UTC2h 30m
2026-05-27 N655CB - May 27, 10:15 UTCMay 27, 12:45 UTC2h 30m
2026-05-24 N655CB - May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 N655CB - May 24, 14:55 UTCMay 24, 18:15 UTC3h 20m
2026-05-21 N655CB - May 21, 19:05 UTCMay 21, 20:05 UTC1h 0m
2026-05-21 N655CB - May 21, 13:05 UTCMay 21, 14:05 UTC1h 0m
2026-05-21 N655CB - May 21, 11:05 UTCMay 21, 12:05 UTC1h 0m
2026-05-20 N655CB - May 20, 20:20 UTCMay 20, 21:20 UTC1h 0m
2026-05-17 N655CB - May 17, 01:55 UTCMay 17, 02:40 UTC45m
2026-05-16 N655CB - May 16, 18:55 UTCMay 16, 19:40 UTC45m
2026-05-16 N655CB - May 16, 16:31 UTCMay 16, 17:45 UTC1h 15m
2026-05-15 N655CB - May 15, 21:35 UTCMay 15, 22:00 UTC25m
2026-05-15 N655CB - May 15, 16:25 UTCMay 15, 17:35 UTC1h 10m
2026-05-15 N655CB AUO → WDR May 15, 14:20 UTCMay 15, 15:15 UTC54m
2026-05-13 N655CB - May 13, 01:45 UTCMay 13, 02:30 UTC45m
2026-05-12 N655CB AUO → PDK May 12, 11:20 UTCMay 12, 12:05 UTC45m
2026-05-10 N655CB - May 10, 19:00 UTCMay 10, 21:44 UTC2h 45m
2026-05-07 N655CB - May 7, 20:45 UTCMay 7, 23:09 UTC2h 25m
2026-05-07 N655CB - May 7, 18:15 UTCMay 7, 19:05 UTC50m
2026-05-06 N655CB - May 6, 20:00 UTCMay 6, 20:40 UTC40m
2026-05-06 N655CB - May 6, 19:00 UTCMay 6, 19:50 UTC50m
2026-05-06 N655CB - May 6, 11:55 UTCMay 6, 12:50 UTC55m
2026-04-27 N655CB - Apr 27, 20:50 UTCApr 27, 22:45 UTC1h 55m
2026-04-27 N655CB - Apr 27, 14:15 UTCApr 27, 14:55 UTC40m
2026-04-27 N655CB - Apr 27, 12:45 UTCApr 27, 13:40 UTC55m
2026-04-24 N655CB - Apr 24, 20:00 UTCApr 24, 21:25 UTC1h 25m
2026-04-13 N655CB - Apr 13, 12:20 UTCApr 13, 13:00 UTC40m

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 N655CB page for operator, model, and routing details .

Mode-S A89F81 frequently asked

What is Mode-S code A89F81?
A89F81 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N655CB.
Where is Mode-S A89F81 registered?
Mode-S code A89F81 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 A89F81 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A89F81, octal 52117601, decimal 11,050,881.
What flights does A89F81 operate?
Mode-S A89F81 has broadcast 1 distinct callsign, including N655CB.