Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A9ED27

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N739GY · CESSNA 172 Skyhawk · operated by RADECKI FRANCIS R, RADECKI M CAROL

Hex
A9ED27
Octal
52366447
Decimal
11,136,295
Country
US
Tail
N739GY
Type
C172
No current signal · last broadcast 5h ago
Flights observed
85
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A9ED27.

Country allocation

The ICAO 24-bit address A9ED27 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
N739GY - 85 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 N739GY SAC → SAC Jun 2, 23:15 UTCJun 3, 00:10 UTC55m
2026-06-02 N739GY - Jun 2, 21:25 UTCJun 2, 21:40 UTC15m
2026-06-02 N739GY - Jun 2, 20:15 UTCJun 2, 21:10 UTC55m
2026-06-02 N739GY SAC → SAC Jun 2, 16:35 UTCJun 2, 17:25 UTC50m
2026-06-02 N739GY SAC → SAC Jun 2, 01:30 UTCJun 2, 02:25 UTC55m
2026-06-01 N739GY SAC → SAC Jun 1, 22:30 UTCJun 2, 00:10 UTC1h 40m
2026-06-01 N739GY - Jun 1, 20:45 UTCJun 1, 21:20 UTC35m
2026-06-01 N739GY SAC → APC Jun 1, 18:10 UTCJun 1, 19:05 UTC55m
2026-05-23 N739GY SAC → SAC May 23, 18:40 UTCMay 23, 19:15 UTC35m
2026-05-22 N739GY SAC → SAC May 22, 22:25 UTCMay 22, 23:30 UTC1h 5m
2026-05-22 N739GY - May 22, 20:45 UTCMay 22, 21:20 UTC35m
2026-05-22 N739GY - May 22, 18:30 UTCMay 22, 19:20 UTC50m
2026-05-22 N739GY SAC → SAC May 22, 03:05 UTCMay 22, 03:20 UTC15m
2026-05-21 N739GY SAC → SAC May 21, 17:40 UTCMay 21, 18:15 UTC35m
2026-05-19 N739GY SAC → SAC May 19, 20:00 UTCMay 19, 21:50 UTC1h 50m
2026-05-19 N739GY SAC → SAC May 19, 17:50 UTCMay 19, 18:50 UTC1h 0m
2026-05-18 N739GY SAC → SAC May 18, 19:20 UTCMay 18, 21:05 UTC1h 45m
2026-05-16 N739GY SAC → SAC May 16, 18:55 UTCMay 16, 19:55 UTC1h 0m
2026-05-15 N739GY SAC → SAC May 15, 22:15 UTCMay 15, 23:50 UTC1h 35m
2026-05-15 N739GY SAC → SAC May 15, 19:55 UTCMay 15, 20:55 UTC1h 0m
2026-05-15 N739GY SAC → SAC May 15, 18:30 UTCMay 15, 18:55 UTC25m
2026-05-06 N739GY SAC → SAC May 6, 23:30 UTCMay 7, 00:55 UTC1h 25m
2026-05-06 N739GY SAC → SAC May 6, 21:45 UTCMay 6, 22:00 UTC15m
2026-05-06 N739GY SAC → SAC May 6, 21:35 UTCMay 6, 21:40 UTC5m
2026-05-06 N739GY SAC → SAC May 6, 18:20 UTCMay 6, 18:55 UTC35m
2026-05-04 N739GY SAC → SAC May 4, 19:30 UTCMay 4, 20:10 UTC40m
2026-05-04 N739GY - May 4, 18:35 UTCMay 4, 18:45 UTC10m
2026-05-04 N739GY - May 4, 17:45 UTCMay 4, 18:25 UTC40m
2026-05-03 N739GY SAC → SAC May 3, 00:35 UTCMay 3, 01:05 UTC30m
2026-05-02 N739GY SAC → SAC May 2, 15:30 UTCMay 2, 17:10 UTC1h 40m
2026-05-02 N739GY - May 2, 00:40 UTCMay 2, 00:55 UTC15m
2026-05-01 N739GY - May 1, 23:10 UTCMay 1, 23:40 UTC30m
2026-05-01 N739GY SAC → SAC May 1, 20:40 UTCMay 1, 22:00 UTC1h 20m
2026-05-01 N739GY SAC → SAC May 1, 18:45 UTCMay 1, 19:50 UTC1h 5m
2026-05-01 N739GY - May 1, 16:55 UTCMay 1, 17:50 UTC55m
2026-05-01 N739GY SAC → SAC May 1, 03:45 UTCMay 1, 05:00 UTC1h 15m
2026-05-01 N739GY - May 1, 00:05 UTCMay 1, 00:50 UTC45m
2026-04-29 N739GY SAC → SAC Apr 29, 23:00 UTCApr 30, 00:00 UTC59m
2026-04-29 N739GY SAC → SAC Apr 29, 18:45 UTCApr 29, 19:45 UTC1h 0m
2026-04-29 N739GY SAC → SAC Apr 29, 00:50 UTCApr 29, 01:20 UTC30m
2026-04-28 N739GY SAC → SAC Apr 28, 21:50 UTCApr 28, 22:00 UTC10m
2026-04-28 N739GY - Apr 28, 18:55 UTCApr 28, 21:05 UTC2h 10m
2026-04-28 N739GY SAC → SAC Apr 28, 16:50 UTCApr 28, 17:35 UTC45m
2026-04-28 N739GY - Apr 28, 06:15 UTCApr 28, 07:10 UTC55m
2026-04-28 N739GY - Apr 28, 03:30 UTCApr 28, 04:35 UTC1h 5m
2026-04-27 N739GY SAC → SAC Apr 27, 22:25 UTCApr 27, 23:05 UTC40m
2026-04-27 N739GY SAC → SAC Apr 27, 19:55 UTCApr 27, 21:00 UTC1h 5m
2026-04-26 N739GY - Apr 26, 18:15 UTCApr 26, 18:25 UTC10m
2026-04-26 N739GY - Apr 26, 17:40 UTCApr 26, 18:05 UTC25m
2026-04-24 N739GY - Apr 24, 16:45 UTCApr 24, 18:00 UTC1h 15m

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 N739GY page for operator, model, and routing details .

Mode-S A9ED27 frequently asked

What is Mode-S code A9ED27?
A9ED27 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N739GY.
Where is Mode-S A9ED27 registered?
Mode-S code A9ED27 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 A9ED27 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 A9ED27, octal 52366447, decimal 11,136,295.
What flights does A9ED27 operate?
Mode-S A9ED27 has broadcast 1 distinct callsign, including N739GY.