Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A711C2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N5548L · CESSNA 152 · operated by ELLSWORTH GEROLD A, ELLSWORTH JANE P

Hex
A711C2
Octal
51610702
Decimal
10,949,058
Country
US
Tail
N5548L
Type
C152
No current signal · last broadcast 7h ago
Flights observed
92
Distinct callsigns
1
Country
US
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S A711C2.

Country allocation

The ICAO 24-bit address A711C2 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
N5548L - 92 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-17 N5548L - Jun 17, 21:45 UTCJun 17, 22:50 UTC1h 5m
2026-06-17 N5548L GDC → GDC Jun 17, 19:30 UTCJun 17, 19:55 UTC25m
2026-06-17 N5548L - Jun 17, 17:10 UTCJun 17, 17:55 UTC45m
2026-06-15 N5548L - Jun 15, 15:04 UTCJun 15, 15:25 UTC20m
2026-06-15 N5548L - Jun 15, 13:00 UTCJun 15, 13:10 UTC10m
2026-06-14 N5548L GDC → GMU Jun 14, 15:05 UTCJun 14, 15:50 UTC45m
2026-06-11 N5548L - Jun 11, 14:45 UTCJun 11, 15:05 UTC20m
2026-06-11 N5548L - Jun 11, 10:45 UTCJun 11, 11:25 UTC40m
2026-06-10 N5548L - Jun 10, 14:50 UTCJun 10, 15:40 UTC50m
2026-06-10 N5548L - Jun 10, 11:00 UTCJun 10, 11:30 UTC30m
2026-06-09 N5548L - Jun 9, 16:45 UTCJun 9, 17:55 UTC1h 10m
2026-06-08 N5548L GDC → GMU Jun 8, 22:55 UTCJun 8, 23:50 UTC55m
2026-06-08 N5548L - Jun 8, 20:05 UTCJun 8, 21:20 UTC1h 15m
2026-06-08 N5548L - Jun 8, 17:25 UTCJun 8, 18:30 UTC1h 5m
2026-06-08 N5548L - Jun 8, 11:00 UTCJun 8, 11:10 UTC10m
2026-06-07 N5548L - Jun 7, 13:55 UTCJun 7, 15:00 UTC1h 5m
2026-06-07 N5548L - Jun 7, 11:35 UTCJun 7, 12:05 UTC30m
2026-06-05 N5548L - Jun 5, 14:05 UTCJun 5, 14:25 UTC20m
2026-06-05 N5548L - Jun 5, 10:00 UTCJun 5, 10:40 UTC40m
2026-06-04 N5548L - Jun 4, 17:40 UTCJun 4, 18:50 UTC1h 10m
2026-06-04 N5548L - Jun 4, 13:40 UTCJun 4, 14:00 UTC20m
2026-06-04 N5548L - Jun 4, 11:55 UTCJun 4, 13:10 UTC1h 15m
2026-06-03 N5548L - Jun 3, 20:45 UTCJun 3, 21:00 UTC15m
2026-06-03 N5548L - Jun 3, 18:45 UTCJun 3, 20:05 UTC1h 20m
2026-06-03 N5548L - Jun 3, 16:40 UTCJun 3, 17:05 UTC25m
2026-06-03 N5548L - Jun 3, 13:55 UTCJun 3, 15:25 UTC1h 30m
2026-06-02 N5548L - Jun 2, 19:35 UTCJun 2, 20:45 UTC1h 10m
2026-06-02 N5548L - Jun 2, 13:50 UTCJun 2, 14:55 UTC1h 5m
2026-06-01 N5548L - Jun 1, 17:05 UTCJun 1, 17:35 UTC30m
2026-05-30 N5548L - May 30, 23:35 UTCMay 31, 00:50 UTC1h 15m
2026-05-30 N5548L - May 30, 16:50 UTCMay 30, 17:55 UTC1h 5m
2026-05-29 N5548L - May 29, 21:30 UTCMay 29, 22:15 UTC45m
2026-05-29 N5548L - May 29, 11:35 UTCMay 29, 12:40 UTC1h 5m
2026-05-28 N5548L - May 28, 16:50 UTCMay 28, 17:35 UTC45m
2026-05-28 N5548L - May 28, 12:35 UTCMay 28, 13:55 UTC1h 20m
2026-05-20 N5548L - May 20, 20:05 UTCMay 20, 21:25 UTC1h 20m
2026-05-19 N5548L - May 19, 18:45 UTCMay 19, 20:10 UTC1h 25m
2026-05-19 N5548L - May 19, 16:40 UTCMay 19, 17:30 UTC50m
2026-05-19 N5548L - May 19, 12:50 UTCMay 19, 13:20 UTC30m
2026-05-18 N5548L - May 18, 21:25 UTCMay 18, 22:45 UTC1h 20m
2026-05-18 N5548L - May 18, 17:45 UTCMay 18, 19:00 UTC1h 14m
2026-05-17 N5548L - May 17, 19:35 UTCMay 17, 21:01 UTC1h 25m
2026-05-16 N5548L - May 16, 16:35 UTCMay 16, 17:45 UTC1h 10m
2026-05-15 N5548L - May 15, 13:40 UTCMay 15, 14:40 UTC1h 0m
2026-05-15 N5548L - May 15, 00:15 UTCMay 15, 01:40 UTC1h 25m
2026-05-13 N5548L - May 13, 22:00 UTCMay 13, 23:35 UTC1h 35m
2026-05-13 N5548L - May 13, 16:40 UTCMay 13, 17:50 UTC1h 10m
2026-05-13 N5548L - May 13, 14:51 UTCMay 13, 15:05 UTC15m
2026-05-13 N5548L - May 13, 13:55 UTCMay 13, 14:20 UTC25m
2026-05-12 N5548L - May 12, 18:45 UTCMay 12, 18:55 UTC10m

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 N5548L page for operator, model, and routing details .

Mode-S A711C2 frequently asked

What is Mode-S code A711C2?
A711C2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N5548L.
Where is Mode-S A711C2 registered?
Mode-S code A711C2 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 A711C2 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A711C2, octal 51610702, decimal 10,949,058.
What flights does A711C2 operate?
Mode-S A711C2 has broadcast 1 distinct callsign, including N5548L.