Apparatus

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sensors Mode-S transponder

ACB09E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9169X · CESSNA 182 Skylane · operated by ALLEN AIR LLC

Hex
ACB09E
Octal
53130236
Decimal
11,317,406
Country
US
Tail
N9169X
Type
C182
No current signal · last broadcast Jul 13, 21:35 UTC
Flights observed
23
Distinct callsigns
1
Country
US
Last broadcast
Jul 13, 21:35 UTC

Last known position

Most recent position reported by Mode-S ACB09E.

Country allocation

The ICAO 24-bit address ACB09E 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
N9169X - 23 2026-07-13

Recent flights last 23

DateFlightRouteTakeoffLandingDuration
2026-07-13 N9169X - Jul 13, 20:50 UTCJul 13, 21:35 UTC45m
2026-07-12 N9169X - Jul 12, 14:55 UTCJul 12, 15:35 UTC40m
2026-07-06 N9169X - Jul 6, 20:10 UTCJul 6, 21:05 UTC55m
2026-07-05 N9169X - Jul 5, 22:20 UTCJul 5, 23:05 UTC45m
2026-07-01 N9169X - Jul 1, 16:50 UTCJul 1, 17:35 UTC45m
2026-06-30 N9169X - Jun 30, 00:00 UTCJun 30, 02:10 UTC2h 10m
2026-06-29 N9169X - Jun 29, 18:25 UTCJun 29, 18:39 UTC15m
2026-06-28 N9169X - Jun 28, 16:09 UTCJun 28, 18:10 UTC2h 0m
2026-06-27 N9169X - Jun 27, 19:34 UTCJun 27, 20:19 UTC45m
2026-06-27 N9169X - Jun 27, 15:00 UTCJun 27, 18:45 UTC3h 45m
2026-06-25 N9169X - Jun 25, 19:34 UTCJun 25, 20:14 UTC40m
2026-06-25 N9169X - Jun 25, 18:15 UTCJun 25, 18:50 UTC35m
2026-06-11 N9169X - Jun 11, 19:20 UTCJun 11, 20:10 UTC50m
2026-06-08 N9169X - Jun 8, 18:45 UTCJun 8, 21:00 UTC2h 15m
2026-06-08 N9169X - Jun 8, 12:00 UTCJun 8, 12:45 UTC45m
2026-06-08 N9169X - Jun 8, 00:45 UTCJun 8, 02:00 UTC1h 15m
2026-06-07 N9169X - Jun 7, 20:30 UTCJun 7, 21:25 UTC55m
2026-06-06 N9169X - Jun 6, 18:39 UTCJun 6, 19:34 UTC55m
2026-05-10 N9169X - May 10, 20:25 UTCMay 10, 21:04 UTC40m
2026-05-07 N9169X - May 7, 17:35 UTCMay 7, 18:40 UTC1h 5m
2026-05-05 N9169X - May 5, 12:35 UTCMay 5, 13:20 UTC45m
2026-05-04 N9169X - May 4, 19:45 UTCMay 4, 20:45 UTC1h 0m
2026-04-25 N9169X - Apr 25, 15:25 UTCApr 25, 17:05 UTC1h 40m

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 N9169X page for operator, model, and routing details .

Mode-S ACB09E frequently asked

What is Mode-S code ACB09E?
ACB09E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9169X.
Where is Mode-S ACB09E registered?
Mode-S code ACB09E 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 ACB09E broadcasting right now?
No active broadcast right now. Last signal was Jul 13, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACB09E, octal 53130236, decimal 11,317,406.
What flights does ACB09E operate?
Mode-S ACB09E has broadcast 1 distinct callsign, including N9169X.