Apparatus

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sensors Mode-S transponder

A9E5B5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N737GU · CESSNA 172 Skyhawk · operated by WINGS OVER TEXAS HOLDINGS LLC

Hex
A9E5B5
Octal
52362665
Decimal
11,134,389
Country
US
Tail
N737GU
Type
C172
No current signal · last broadcast 12d ago
Flights observed
78
Distinct callsigns
1
Country
US
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S A9E5B5.

Country allocation

The ICAO 24-bit address A9E5B5 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
N737GU - 78 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N737GU - Jul 26, 20:55 UTCJul 26, 21:15 UTC20m
2026-07-24 N737GU - Jul 24, 22:20 UTCJul 24, 23:45 UTC1h 25m
2026-07-22 N737GU - Jul 22, 23:55 UTCJul 23, 01:15 UTC1h 20m
2026-07-17 N737GU - Jul 17, 22:20 UTCJul 17, 23:45 UTC1h 25m
2026-07-17 N737GU - Jul 17, 15:25 UTCJul 17, 15:55 UTC30m
2026-07-16 N737GU - Jul 16, 02:20 UTCJul 16, 03:50 UTC1h 30m
2026-07-13 N737GU - Jul 13, 17:45 UTCJul 13, 18:05 UTC20m
2026-07-02 N737GU - Jul 2, 21:15 UTCJul 2, 21:45 UTC30m
2026-07-02 N737GU - Jul 2, 16:15 UTCJul 2, 16:35 UTC20m
2026-06-28 N737GU - Jun 28, 17:19 UTCJun 28, 17:30 UTC10m
2026-06-26 N737GU - Jun 26, 22:25 UTCJun 26, 22:40 UTC15m
2026-06-26 N737GU - Jun 26, 17:29 UTCJun 26, 19:00 UTC1h 30m
2026-06-25 N737GU - Jun 25, 18:55 UTCJun 25, 20:19 UTC1h 25m
2026-06-24 N737GU - Jun 24, 21:19 UTCJun 24, 22:39 UTC1h 20m
2026-06-24 N737GU - Jun 24, 18:44 UTCJun 24, 19:29 UTC45m
2026-06-24 N737GU - Jun 24, 03:10 UTCJun 24, 04:20 UTC1h 10m
2026-06-23 N737GU - Jun 23, 20:24 UTCJun 23, 21:39 UTC1h 15m
2026-06-23 N737GU - Jun 23, 17:20 UTCJun 23, 18:45 UTC1h 25m
2026-06-22 N737GU - Jun 22, 22:24 UTCJun 22, 23:14 UTC50m
2026-06-22 N737GU - Jun 22, 19:54 UTCJun 22, 20:55 UTC1h 0m
2026-06-22 N737GU - Jun 22, 16:45 UTCJun 22, 17:44 UTC1h 0m
2026-06-19 N737GU - Jun 19, 22:30 UTCJun 19, 23:29 UTC1h 0m
2026-06-18 N737GU - Jun 18, 20:50 UTCJun 18, 22:00 UTC1h 10m
2026-06-18 N737GU - Jun 18, 18:20 UTCJun 18, 19:35 UTC1h 15m
2026-06-17 N737GU - Jun 17, 18:30 UTCJun 17, 19:10 UTC40m
2026-06-16 N737GU - Jun 16, 23:05 UTCJun 17, 00:55 UTC1h 50m
2026-06-12 N737GU - Jun 12, 21:20 UTCJun 12, 22:45 UTC1h 25m
2026-06-12 N737GU - Jun 12, 16:45 UTCJun 12, 17:10 UTC25m
2026-06-11 N737GU - Jun 11, 23:00 UTCJun 12, 00:50 UTC1h 50m
2026-06-04 N737GU - Jun 4, 22:10 UTCJun 4, 23:10 UTC1h 0m
2026-05-29 N737GU - May 29, 19:30 UTCMay 29, 20:40 UTC1h 10m
2026-05-28 N737GU - May 28, 21:35 UTCMay 28, 23:20 UTC1h 45m
2026-05-26 N737GU - May 26, 03:50 UTCMay 26, 04:15 UTC25m
2026-05-25 N737GU - May 25, 20:24 UTCMay 25, 22:25 UTC2h 0m
2026-05-25 N737GU - May 25, 17:55 UTCMay 25, 19:40 UTC1h 45m
2026-05-24 N737GU - May 24, 16:00 UTCMay 24, 17:40 UTC1h 40m
2026-05-24 N737GU - May 24, 12:50 UTCMay 24, 14:40 UTC1h 50m
2026-05-22 N737GU - May 22, 23:10 UTCMay 23, 00:35 UTC1h 25m
2026-05-21 N737GU - May 21, 02:45 UTCMay 21, 04:15 UTC1h 30m
2026-05-21 N737GU - May 21, 00:15 UTCMay 21, 01:20 UTC1h 5m
2026-05-20 N737GU - May 20, 18:25 UTCMay 20, 20:00 UTC1h 35m
2026-05-20 N737GU - May 20, 16:00 UTCMay 20, 17:15 UTC1h 15m
2026-05-19 N737GU - May 19, 16:55 UTCMay 19, 17:15 UTC20m
2026-05-19 N737GU - May 19, 14:20 UTCMay 19, 16:00 UTC1h 40m
2026-05-18 N737GU - May 18, 23:10 UTCMay 19, 00:35 UTC1h 25m
2026-05-16 N737GU - May 16, 18:15 UTCMay 16, 21:35 UTC3h 20m
2026-05-15 N737GU - May 15, 19:15 UTCMay 15, 20:40 UTC1h 25m
2026-05-15 N737GU - May 15, 16:15 UTCMay 15, 17:40 UTC1h 25m
2026-05-14 N737GU - May 14, 21:10 UTCMay 14, 22:10 UTC1h 0m
2026-05-14 N737GU - May 14, 18:30 UTCMay 14, 19:55 UTC1h 25m

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 N737GU page for operator, model, and routing details .

Mode-S A9E5B5 frequently asked

What is Mode-S code A9E5B5?
A9E5B5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N737GU.
Where is Mode-S A9E5B5 registered?
Mode-S code A9E5B5 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 A9E5B5 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9E5B5, octal 52362665, decimal 11,134,389.
What flights does A9E5B5 operate?
Mode-S A9E5B5 has broadcast 1 distinct callsign, including N737GU.