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sensors Mode-S transponder

A53BDA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N43601 · PIPER PA-28-140/150/160/180 · operated by STRATFORD CECELIA M

Hex
A53BDA
Octal
51235732
Decimal
10,828,762
Country
US
Tail
N43601
Type
P28A
No current signal · last broadcast Jul 25, 12:10 UTC
Flights observed
57
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 12:10 UTC

Last known position

Most recent position reported by Mode-S A53BDA.

Country allocation

The ICAO 24-bit address A53BDA 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
N43601 - 57 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N43601 - Jul 25, 08:40 UTCJul 25, 12:10 UTC3h 30m
2026-07-25 N43601 - Jul 25, 07:35 UTCJul 25, 08:00 UTC25m
2026-07-25 N43601 - Jul 25, 03:55 UTCJul 25, 07:00 UTC3h 5m
2026-07-25 N43601 OSH → KKT Jul 25, 01:00 UTCJul 25, 03:10 UTC2h 10m
2026-07-22 N43601 - Jul 22, 15:30 UTCJul 22, 16:05 UTC35m
2026-07-22 N43601 - Jul 22, 02:10 UTCJul 22, 05:00 UTC2h 50m
2026-07-22 N43601 - Jul 22, 00:00 UTCJul 22, 00:45 UTC45m
2026-07-21 N43601 - Jul 21, 17:55 UTCJul 21, 18:05 UTC10m
2026-07-21 N43601 - Jul 21, 07:25 UTCJul 21, 08:05 UTC40m
2026-07-21 N43601 - Jul 21, 01:30 UTCJul 21, 04:10 UTC2h 40m
2026-07-20 N43601 - Jul 20, 23:30 UTCJul 21, 00:15 UTC44m
2026-07-08 N43601 - Jul 8, 23:00 UTCJul 8, 23:25 UTC25m
2026-07-04 N43601 - Jul 4, 18:50 UTCJul 4, 19:55 UTC1h 5m
2026-07-04 N43601 - Jul 4, 16:55 UTCJul 4, 18:20 UTC1h 25m
2026-07-04 N43601 - Jul 4, 15:25 UTCJul 4, 16:20 UTC55m
2026-07-04 N43601 - Jul 4, 00:20 UTCJul 4, 00:35 UTC15m
2026-07-02 N43601 - Jul 2, 22:10 UTCJul 2, 23:25 UTC1h 15m
2026-07-02 N43601 - Jul 2, 13:50 UTCJul 2, 16:00 UTC2h 10m
2026-06-30 N43601 - Jun 30, 23:05 UTCJul 1, 01:00 UTC1h 55m
2026-06-30 N43601 - Jun 30, 15:05 UTCJun 30, 16:55 UTC1h 50m
2026-06-26 N43601 - Jun 26, 22:44 UTCJun 27, 01:24 UTC2h 40m
2026-06-26 N43601 - Jun 26, 19:20 UTCJun 26, 19:50 UTC30m
2026-06-26 N43601 - Jun 26, 16:14 UTCJun 26, 18:15 UTC2h 0m
2026-06-26 N43601 - Jun 26, 03:34 UTCJun 26, 04:00 UTC25m
2026-06-26 N43601 - Jun 26, 01:50 UTCJun 26, 02:24 UTC35m
2026-06-25 N43601 - Jun 25, 21:20 UTCJun 25, 21:44 UTC25m
2026-06-25 N43601 - Jun 25, 19:29 UTCJun 25, 20:14 UTC45m
2026-06-17 N43601 - Jun 17, 21:20 UTCJun 17, 21:45 UTC25m
2026-06-17 N43601 - Jun 17, 20:05 UTCJun 17, 21:15 UTC1h 10m
2026-06-17 N43601 - Jun 17, 17:00 UTCJun 17, 19:30 UTC2h 30m
2026-06-16 N43601 - Jun 16, 06:25 UTCJun 16, 08:35 UTC2h 10m
2026-06-16 N43601 - Jun 16, 04:55 UTCJun 16, 05:50 UTC55m
2026-06-16 N43601 - Jun 16, 03:39 UTCJun 16, 04:00 UTC20m
2026-06-16 N43601 - Jun 16, 00:55 UTCJun 16, 01:40 UTC45m
2026-06-15 N43601 - Jun 15, 22:05 UTCJun 15, 22:49 UTC45m
2026-06-15 N43601 - Jun 15, 20:10 UTCJun 15, 20:30 UTC20m
2026-06-15 N43601 - Jun 15, 01:00 UTCJun 15, 01:25 UTC25m
2026-06-13 N43601 - Jun 13, 23:30 UTCJun 14, 00:50 UTC1h 20m
2026-06-10 N43601 - Jun 10, 21:50 UTCJun 10, 22:45 UTC55m
2026-06-10 N43601 - Jun 10, 19:55 UTCJun 10, 21:10 UTC1h 15m
2026-06-10 N43601 - Jun 10, 02:50 UTCJun 10, 03:15 UTC25m
2026-06-06 N43601 - Jun 6, 23:05 UTCJun 6, 23:39 UTC35m
2026-06-06 N43601 - Jun 6, 20:19 UTCJun 6, 21:30 UTC1h 10m
2026-06-04 N43601 - Jun 4, 23:20 UTCJun 5, 00:00 UTC40m
2026-06-04 N43601 - Jun 4, 21:45 UTCJun 4, 22:10 UTC25m
2026-06-04 N43601 - Jun 4, 20:20 UTCJun 4, 20:45 UTC25m
2026-05-29 N43601 - May 29, 00:55 UTCMay 29, 01:40 UTC45m
2026-05-28 N43601 - May 28, 22:35 UTCMay 28, 23:25 UTC50m
2026-05-21 N43601 - May 21, 22:15 UTCMay 21, 22:45 UTC30m
2026-05-21 N43601 - May 21, 19:20 UTCMay 21, 19:55 UTC35m

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 N43601 page for operator, model, and routing details .

Mode-S A53BDA frequently asked

What is Mode-S code A53BDA?
A53BDA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N43601.
Where is Mode-S A53BDA registered?
Mode-S code A53BDA 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 A53BDA broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 12:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A53BDA, octal 51235732, decimal 10,828,762.
What flights does A53BDA operate?
Mode-S A53BDA has broadcast 1 distinct callsign, including N43601.