Apparatus

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sensors Mode-S transponder

A9EA6A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N738SY · CESSNA 172 Skyhawk · operated by VAN ANDA AVIATION LLC

Hex
A9EA6A
Octal
52365152
Decimal
11,135,594
Country
US
Tail
N738SY
Type
C172
No current signal · last broadcast 21h ago
Flights observed
65
Distinct callsigns
1
Country
US
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S A9EA6A.

Country allocation

The ICAO 24-bit address A9EA6A 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
N738SY - 65 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 N738SY ORL → ORL Jun 2, 14:20 UTCJun 2, 15:10 UTC50m
2026-05-31 N738SY ORL → ORL May 31, 22:50 UTCJun 1, 00:05 UTC1h 15m
2026-05-31 N738SY - May 31, 18:40 UTCMay 31, 18:50 UTC10m
2026-05-31 N738SY ORL → ISM May 31, 16:35 UTCMay 31, 17:35 UTC1h 0m
2026-05-30 N738SY ORL → ORL May 30, 16:00 UTCMay 30, 16:35 UTC35m
2026-05-29 N738SY - May 29, 14:45 UTCMay 29, 15:05 UTC20m
2026-05-29 N738SY - May 29, 13:35 UTCMay 29, 14:05 UTC30m
2026-05-26 N738SY - May 26, 12:00 UTCMay 26, 12:20 UTC20m
2026-05-20 N738SY ORL → ORL May 20, 14:25 UTCMay 20, 15:10 UTC45m
2026-05-20 N738SY ORL → ORL May 20, 11:20 UTCMay 20, 13:10 UTC1h 50m
2026-05-19 N738SY ORL → ORL May 19, 21:35 UTCMay 19, 22:35 UTC1h 0m
2026-05-19 N738SY - May 19, 16:55 UTCMay 19, 17:00 UTC5m
2026-05-19 N738SY ORL → ORL May 19, 16:30 UTCMay 19, 16:40 UTC10m
2026-05-19 N738SY ORL → ORL May 19, 13:55 UTCMay 19, 15:40 UTC1h 45m
2026-05-18 N738SY - May 18, 13:40 UTCMay 18, 15:35 UTC1h 55m
2026-05-18 N738SY - May 18, 11:05 UTCMay 18, 12:55 UTC1h 50m
2026-05-16 N738SY ORL → ORL May 16, 13:55 UTCMay 16, 14:35 UTC40m
2026-05-14 N738SY - May 14, 22:10 UTCMay 14, 22:40 UTC30m
2026-05-14 N738SY ORL → ORL May 14, 21:50 UTCMay 14, 22:00 UTC10m
2026-05-14 N738SY ORL → ORL May 14, 16:35 UTCMay 14, 17:50 UTC1h 15m
2026-05-13 N738SY ORL → ORL May 13, 21:30 UTCMay 13, 22:35 UTC1h 5m
2026-05-13 N738SY ORL → ORL May 13, 18:35 UTCMay 13, 19:00 UTC25m
2026-05-12 N738SY ORL → ORL May 12, 10:55 UTCMay 12, 12:10 UTC1h 15m
2026-05-09 N738SY ORL → ORL May 9, 17:05 UTCMay 9, 17:15 UTC10m
2026-05-09 N738SY ORL → ORL May 9, 16:30 UTCMay 9, 16:35 UTC5m
2026-05-09 N738SY ORL → ORL May 9, 00:20 UTCMay 9, 00:45 UTC25m
2026-05-07 N738SY - May 7, 16:25 UTCMay 7, 17:35 UTC1h 10m
2026-05-06 N738SY ORL → ORL May 6, 21:20 UTCMay 6, 22:45 UTC1h 25m
2026-05-06 N738SY ORL → ORL May 6, 11:20 UTCMay 6, 14:00 UTC2h 40m
2026-05-05 N738SY ORL → ORL May 5, 11:50 UTCMay 5, 12:50 UTC1h 0m
2026-05-04 N738SY ORL → ORL May 4, 17:15 UTCMay 4, 17:50 UTC35m
2026-05-01 N738SY - May 1, 16:15 UTCMay 1, 17:25 UTC1h 10m
2026-04-30 N738SY ORL → ORL Apr 30, 21:25 UTCApr 30, 22:25 UTC1h 0m
2026-04-30 N738SY - Apr 30, 16:20 UTCApr 30, 17:05 UTC45m
2026-04-30 N738SY ORL → ORL Apr 30, 13:35 UTCApr 30, 14:50 UTC1h 15m
2026-04-30 N738SY ORL → ORL Apr 30, 11:05 UTCApr 30, 12:45 UTC1h 40m
2026-04-28 N738SY ORL → ORL Apr 28, 16:50 UTCApr 28, 17:40 UTC50m
2026-04-28 N738SY ORL → ORL Apr 28, 13:45 UTCApr 28, 14:55 UTC1h 10m
2026-04-24 N738SY ORL → ORL Apr 24, 18:50 UTCApr 24, 19:35 UTC45m
2026-04-24 N738SY ORL → ORL Apr 24, 16:55 UTCApr 24, 17:40 UTC45m
2026-04-23 N738SY ORL → ORL Apr 23, 13:35 UTCApr 23, 14:50 UTC1h 15m
2026-04-23 N738SY ORL → ORL Apr 23, 10:50 UTCApr 23, 12:25 UTC1h 35m
2026-04-23 N738SY ORL → ORL Apr 23, 00:35 UTCApr 23, 02:10 UTC1h 35m
2026-04-22 N738SY ORL → ORL Apr 22, 11:35 UTCApr 22, 13:05 UTC1h 30m
2026-04-21 N738SY - Apr 21, 12:40 UTCApr 21, 14:31 UTC1h 50m
2026-04-21 N738SY ORL → ORL Apr 21, 11:00 UTCApr 21, 12:05 UTC1h 5m
2026-04-20 N738SY ORL → ORL Apr 20, 20:50 UTCApr 20, 22:25 UTC1h 35m
2026-04-18 N738SY KYO → ORL Apr 18, 16:20 UTCApr 18, 17:00 UTC40m
2026-04-18 N738SY ORL → KYO Apr 18, 14:00 UTCApr 18, 14:50 UTC50m
2026-04-17 N738SY ORL → ORL Apr 17, 21:40 UTCApr 17, 22:35 UTC55m

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 N738SY page for operator, model, and routing details .

Mode-S A9EA6A frequently asked

What is Mode-S code A9EA6A?
A9EA6A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N738SY.
Where is Mode-S A9EA6A registered?
Mode-S code A9EA6A 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 A9EA6A broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9EA6A, octal 52365152, decimal 11,135,594.
What flights does A9EA6A operate?
Mode-S A9EA6A has broadcast 1 distinct callsign, including N738SY.