Apparatus

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sensors Mode-S transponder

A9EA58

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N738SE · CESSNA 172 Skyhawk · operated by MORCOM AVIATION SERVICES INC

Hex
A9EA58
Octal
52365130
Decimal
11,135,576
Country
US
Tail
N738SE
Type
C172
No current signal · last broadcast 17h ago
Flights observed
114
Distinct callsigns
1
Country
US
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S A9EA58.

Country allocation

The ICAO 24-bit address A9EA58 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
N738SE - 114 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N738SE PAE → PAE Jul 17, 20:35 UTCJul 17, 21:34 UTC1h 0m
2026-07-15 N738SE - Jul 15, 21:10 UTCJul 15, 22:00 UTC50m
2026-07-15 N738SE - Jul 15, 20:20 UTCJul 15, 20:30 UTC10m
2026-07-15 N738SE - Jul 15, 19:45 UTCJul 15, 20:15 UTC30m
2026-07-14 N738SE PAE → PAE Jul 14, 21:20 UTCJul 14, 22:00 UTC40m
2026-07-13 N738SE - Jul 13, 15:55 UTCJul 13, 17:45 UTC1h 50m
2026-07-10 N738SE - Jul 10, 23:40 UTCJul 11, 00:45 UTC1h 5m
2026-07-09 N738SE - Jul 9, 22:45 UTCJul 9, 23:45 UTC1h 0m
2026-07-09 N738SE PAE → PAE Jul 9, 19:00 UTCJul 9, 20:40 UTC1h 40m
2026-07-07 N738SE - Jul 7, 21:50 UTCJul 7, 22:45 UTC55m
2026-07-07 N738SE PAE → PAE Jul 7, 19:00 UTCJul 7, 19:40 UTC40m
2026-07-06 N738SE PAE → PAE Jul 6, 19:00 UTCJul 6, 20:50 UTC1h 50m
2026-07-05 N738SE - Jul 5, 21:20 UTCJul 5, 22:20 UTC1h 0m
2026-07-03 N738SE - Jul 3, 22:15 UTCJul 3, 22:50 UTC35m
2026-07-03 N738SE - Jul 3, 19:05 UTCJul 3, 19:50 UTC45m
2026-07-02 N738SE - Jul 2, 22:55 UTCJul 3, 00:40 UTC1h 45m
2026-06-29 N738SE - Jun 29, 05:24 UTCJun 29, 05:45 UTC20m
2026-06-27 N738SE - Jun 27, 22:49 UTCJun 27, 23:29 UTC40m
2026-06-27 N738SE - Jun 27, 00:20 UTCJun 27, 02:20 UTC2h 0m
2026-06-25 N738SE - Jun 25, 15:34 UTCJun 25, 17:49 UTC2h 15m
2026-06-23 N738SE - Jun 23, 19:55 UTCJun 23, 20:54 UTC1h 0m
2026-06-23 N738SE - Jun 23, 00:04 UTCJun 23, 00:50 UTC45m
2026-06-21 N738SE - Jun 21, 17:10 UTCJun 21, 18:35 UTC1h 25m
2026-06-20 N738SE - Jun 20, 17:44 UTCJun 20, 17:59 UTC15m
2026-06-19 N738SE - Jun 19, 20:59 UTCJun 19, 22:14 UTC1h 15m
2026-06-17 N738SE - Jun 17, 22:55 UTCJun 17, 23:40 UTC45m
2026-06-16 N738SE - Jun 16, 22:40 UTCJun 16, 23:35 UTC55m
2026-06-15 N738SE PAE → PAE Jun 15, 20:54 UTCJun 15, 21:55 UTC1h 0m
2026-06-15 N738SE - Jun 15, 16:04 UTCJun 15, 18:29 UTC2h 25m
2026-06-14 N738SE - Jun 14, 17:30 UTCJun 14, 18:10 UTC40m
2026-06-10 N738SE - Jun 10, 19:15 UTCJun 10, 20:00 UTC45m
2026-06-09 N738SE - Jun 9, 18:30 UTCJun 9, 20:10 UTC1h 40m
2026-06-09 N738SE - Jun 9, 00:20 UTCJun 9, 00:45 UTC25m
2026-06-08 N738SE - Jun 8, 20:50 UTCJun 8, 21:50 UTC1h 0m
2026-06-08 N738SE PAE → PAE Jun 8, 19:10 UTCJun 8, 19:45 UTC35m
2026-06-08 N738SE - Jun 8, 17:10 UTCJun 8, 18:05 UTC55m
2026-06-03 N738SE - Jun 3, 23:00 UTCJun 3, 23:45 UTC45m
2026-06-02 N738SE - Jun 2, 21:15 UTCJun 2, 23:15 UTC2h 0m
2026-06-02 N738SE - Jun 2, 17:50 UTCJun 2, 19:10 UTC1h 20m
2026-06-01 N738SE - Jun 1, 19:40 UTCJun 1, 21:15 UTC1h 35m
2026-06-01 N738SE - Jun 1, 18:05 UTCJun 1, 18:40 UTC35m
2026-05-31 N738SE - May 31, 23:10 UTCJun 1, 00:00 UTC50m
2026-05-31 N738SE - May 31, 19:50 UTCMay 31, 20:40 UTC50m
2026-05-30 N738SE - May 30, 23:00 UTCMay 31, 00:40 UTC1h 40m
2026-05-30 N738SE - May 30, 20:25 UTCMay 30, 21:00 UTC35m
2026-05-29 N738SE CLM → PAE May 29, 01:15 UTCMay 29, 01:55 UTC40m
2026-05-28 N738SE - May 28, 23:50 UTCMay 29, 01:05 UTC1h 15m
2026-05-27 N738SE - May 27, 22:00 UTCMay 27, 23:25 UTC1h 25m
2026-05-27 N738SE - May 27, 01:19 UTCMay 27, 02:29 UTC1h 10m
2026-05-25 N738SE - May 25, 23:45 UTCMay 26, 00:14 UTC30m

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 N738SE page for operator, model, and routing details .

Mode-S A9EA58 frequently asked

What is Mode-S code A9EA58?
A9EA58 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N738SE.
Where is Mode-S A9EA58 registered?
Mode-S code A9EA58 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 A9EA58 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9EA58, octal 52365130, decimal 11,135,576.
What flights does A9EA58 operate?
Mode-S A9EA58 has broadcast 1 distinct callsign, including N738SE.