Apparatus

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sensors Mode-S transponder

A673E3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N5149E · CESSNA 172 Skyhawk · operated by ACE OF SPADES AVIATION LLC

Hex
A673E3
Octal
51471743
Decimal
10,908,643
Country
US
Tail
N5149E
Type
C172
No current signal · last broadcast 5h ago
Flights observed
75
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A673E3.

Country allocation

The ICAO 24-bit address A673E3 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
N5149E - 75 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 N5149E - May 29, 17:30 UTCMay 29, 18:25 UTC55m
2026-05-29 N5149E VGT → VGT May 29, 16:05 UTCMay 29, 16:45 UTC40m
2026-05-28 N5149E VGT → VGT May 28, 16:05 UTCMay 28, 17:05 UTC1h 0m
2026-05-25 N5149E - May 25, 23:19 UTCMay 26, 00:09 UTC50m
2026-05-25 N5149E - May 25, 21:30 UTCMay 25, 21:49 UTC20m
2026-05-25 N5149E VGT → HII May 25, 18:25 UTCMay 25, 19:50 UTC1h 25m
2026-05-25 N5149E VGT → VGT May 25, 15:50 UTCMay 25, 16:30 UTC40m
2026-05-24 N5149E VGT → VGT May 24, 17:50 UTCMay 24, 18:10 UTC20m
2026-05-24 N5149E - May 24, 17:10 UTCMay 24, 17:25 UTC15m
2026-05-24 N5149E VGT → VGT May 24, 16:55 UTCMay 24, 17:05 UTC10m
2026-05-24 N5149E VGT → VGT May 24, 15:05 UTCMay 24, 15:40 UTC35m
2026-05-23 N5149E VGT → VGT May 23, 13:45 UTCMay 23, 15:30 UTC1h 45m
2026-05-22 N5149E VGT → VGT May 22, 20:30 UTCMay 22, 22:00 UTC1h 30m
2026-05-22 N5149E VGT → VGT May 22, 16:50 UTCMay 22, 18:05 UTC1h 15m
2026-05-22 N5149E - May 22, 15:10 UTCMay 22, 15:35 UTC25m
2026-05-22 N5149E - May 22, 13:40 UTCMay 22, 14:15 UTC35m
2026-05-20 N5149E VGT → VGT May 20, 23:35 UTCMay 21, 00:50 UTC1h 15m
2026-05-20 N5149E - May 20, 17:45 UTCMay 20, 18:30 UTC45m
2026-05-20 N5149E - May 20, 15:10 UTCMay 20, 16:25 UTC1h 15m
2026-05-19 N5149E VGT → VGT May 19, 16:45 UTCMay 19, 17:20 UTC35m
2026-05-18 N5149E - May 18, 21:40 UTCMay 18, 22:25 UTC45m
2026-05-18 N5149E VGT → VGT May 18, 17:40 UTCMay 18, 18:45 UTC1h 4m
2026-05-17 N5149E - May 17, 18:20 UTCMay 17, 18:45 UTC25m
2026-05-17 N5149E VGT → VGT May 17, 05:55 UTCMay 17, 06:00 UTC5m
2026-05-17 N5149E VGT → VGT May 17, 05:40 UTCMay 17, 05:50 UTC10m
2026-05-16 N5149E VGT → VGT May 16, 16:20 UTCMay 16, 16:45 UTC25m
2026-05-16 N5149E VGT → VGT May 16, 00:20 UTCMay 16, 00:30 UTC10m
2026-05-16 N5149E - May 16, 00:05 UTCMay 16, 00:15 UTC10m
2026-05-15 N5149E VGT → VGT May 15, 23:45 UTCMay 15, 23:50 UTC5m
2026-05-15 N5149E - May 15, 16:50 UTCMay 15, 17:30 UTC40m
2026-05-15 N5149E VGT → VGT May 15, 13:50 UTCMay 15, 14:35 UTC45m
2026-05-15 N5149E VGT → VGT May 15, 01:00 UTCMay 15, 01:10 UTC10m
2026-05-14 N5149E - May 14, 16:35 UTCMay 14, 17:25 UTC50m
2026-05-14 N5149E - May 14, 11:25 UTCMay 14, 12:20 UTC55m
2026-05-13 N5149E VGT → VGT May 13, 17:50 UTCMay 13, 18:35 UTC45m
2026-05-13 N5149E VGT → VGT May 13, 15:30 UTCMay 13, 16:45 UTC1h 15m
2026-05-12 N5149E VGT → VGT May 12, 13:55 UTCMay 12, 14:40 UTC45m
2026-05-12 N5149E VGT → VGT May 12, 11:40 UTCMay 12, 12:35 UTC55m
2026-05-11 N5149E - May 11, 21:40 UTCMay 11, 22:05 UTC25m
2026-05-11 N5149E VGT → VGT May 11, 18:35 UTCMay 11, 19:20 UTC45m
2026-05-10 N5149E - May 10, 23:55 UTCMay 11, 00:25 UTC30m
2026-05-10 N5149E - May 10, 22:55 UTCMay 10, 23:19 UTC25m
2026-05-10 N5149E VGT → HII May 10, 20:20 UTCMay 10, 21:49 UTC1h 30m
2026-05-10 N5149E VGT → VGT May 10, 16:34 UTCMay 10, 17:10 UTC35m
2026-05-09 N5149E VGT → VGT May 9, 22:10 UTCMay 9, 22:15 UTC5m
2026-05-09 N5149E VGT → VGT May 9, 19:30 UTCMay 9, 20:00 UTC30m
2026-05-09 N5149E VGT → VGT May 9, 16:25 UTCMay 9, 16:35 UTC10m
2026-05-09 N5149E - May 9, 16:10 UTCMay 9, 16:20 UTC10m
2026-05-09 N5149E VGT → VGT May 9, 15:40 UTCMay 9, 16:00 UTC20m
2026-05-08 N5149E - May 8, 21:55 UTCMay 8, 23:15 UTC1h 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 N5149E page for operator, model, and routing details .

Mode-S A673E3 frequently asked

What is Mode-S code A673E3?
A673E3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N5149E.
Where is Mode-S A673E3 registered?
Mode-S code A673E3 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 A673E3 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A673E3, octal 51471743, decimal 10,908,643.
What flights does A673E3 operate?
Mode-S A673E3 has broadcast 1 distinct callsign, including N5149E.