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 Jul 25, 20:10 UTC
Flights observed
133
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 20:10 UTC

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 - 132 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N5548L - Jul 25, 20:00 UTCJul 25, 20:10 UTC10m
2026-07-25 N5548L - Jul 25, 19:05 UTCJul 25, 19:15 UTC10m
2026-07-25 N5548L - Jul 25, 18:20 UTCJul 25, 18:30 UTC10m
2026-07-22 N5548L - Jul 22, 13:25 UTCJul 22, 13:40 UTC15m
2026-07-22 N5548L - Jul 22, 12:25 UTCJul 22, 12:55 UTC30m
2026-07-21 N5548L - Jul 21, 16:40 UTCJul 21, 16:55 UTC15m
2026-07-21 N5548L - Jul 21, 15:45 UTCJul 21, 16:00 UTC15m
2026-07-21 N5548L - Jul 21, 12:50 UTCJul 21, 13:45 UTC55m
2026-07-21 N5548L - Jul 21, 02:35 UTCJul 21, 03:00 UTC25m
2026-07-21 N5548L - Jul 21, 01:30 UTCJul 21, 02:00 UTC30m
2026-07-20 N5548L - Jul 20, 16:55 UTCJul 20, 17:30 UTC35m
2026-07-20 N5548L - Jul 20, 09:15 UTCJul 20, 10:00 UTC45m
2026-07-19 N5548L - Jul 19, 20:35 UTCJul 19, 22:05 UTC1h 30m
2026-07-19 N5548L - Jul 19, 16:45 UTCJul 19, 18:00 UTC1h 15m
2026-07-18 N5548L GMU → AND Jul 18, 15:40 UTCJul 18, 16:30 UTC50m
2026-07-17 N5548L - Jul 17, 12:45 UTCJul 17, 13:00 UTC15m
2026-07-16 N5548L - Jul 16, 13:00 UTCJul 16, 14:05 UTC1h 5m
2026-07-15 N5548L - Jul 15, 12:05 UTCJul 15, 12:45 UTC40m
2026-07-08 N5548L - Jul 8, 16:00 UTCJul 8, 16:10 UTC10m
2026-07-08 N5548L - Jul 8, 12:55 UTCJul 8, 13:05 UTC10m
2026-07-08 N5548L - Jul 8, 10:40 UTCJul 8, 10:55 UTC15m
2026-07-07 N5548L - Jul 7, 12:55 UTCJul 7, 13:50 UTC55m
2026-07-03 N5548L - Jul 3, 14:55 UTCJul 3, 15:50 UTC55m
2026-07-03 N5548L - Jul 3, 12:35 UTCJul 3, 13:50 UTC1h 15m
2026-07-02 N5548L - Jul 2, 13:50 UTCJul 2, 14:20 UTC30m
2026-07-01 N5548L - Jul 1, 12:40 UTCJul 1, 13:25 UTC45m
2026-06-30 N5548L - Jun 30, 19:40 UTCJun 30, 20:15 UTC35m
2026-06-30 N5548L GMU → GMU Jun 30, 11:00 UTCJun 30, 11:40 UTC40m
2026-06-29 N5548L - Jun 29, 13:49 UTCJun 29, 14:09 UTC20m
2026-06-28 N5548L - Jun 28, 13:55 UTCJun 28, 14:14 UTC20m
2026-06-28 N5548L - Jun 28, 12:50 UTCJun 28, 13:00 UTC10m
2026-06-28 N5548L - Jun 28, 02:54 UTCJun 28, 04:10 UTC1h 15m
2026-06-28 N5548L - Jun 28, 01:19 UTCJun 28, 02:10 UTC50m
2026-06-26 N5548L - Jun 26, 13:30 UTCJun 26, 14:44 UTC1h 15m
2026-06-25 N5548L - Jun 25, 19:49 UTCJun 25, 21:20 UTC1h 30m
2026-06-25 N5548L - Jun 25, 15:40 UTCJun 25, 16:39 UTC1h 0m
2026-06-24 - - Jun 24, 15:39 UTCJun 24, 15:49 UTC10m
2026-06-23 N5548L - Jun 23, 22:44 UTCJun 23, 23:50 UTC1h 5m
2026-06-23 N5548L - Jun 23, 17:04 UTCJun 23, 17:39 UTC35m
2026-06-20 N5548L - Jun 20, 19:24 UTCJun 20, 20:49 UTC1h 25m
2026-06-19 N5548L - Jun 19, 16:55 UTCJun 19, 18:05 UTC1h 10m
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

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 Jul 25, 20:10 UTC.
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.