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sensors Mode-S transponder

A53F84

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4370N · PIPER PA-28-140/150/160/180 · operated by THUNDERBIRD AVIATION

Hex
A53F84
Octal
51237604
Decimal
10,829,700
Country
US
Tail
N4370N
Type
P28A
No current signal · last broadcast Jul 22, 18:05 UTC
Flights observed
179
Distinct callsigns
1
Country
US
Last broadcast
Jul 22, 18:05 UTC

Last known position

Most recent position reported by Mode-S A53F84.

Country allocation

The ICAO 24-bit address A53F84 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
N4370N - 179 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 N4370N - Jul 22, 16:40 UTCJul 22, 18:05 UTC1h 25m
2026-07-22 N4370N MIC → MIC Jul 22, 14:25 UTCJul 22, 15:35 UTC1h 10m
2026-07-21 N4370N - Jul 21, 20:55 UTCJul 21, 22:25 UTC1h 30m
2026-07-21 N4370N - Jul 21, 16:40 UTCJul 21, 17:50 UTC1h 10m
2026-07-21 N4370N - Jul 21, 14:35 UTCJul 21, 15:40 UTC1h 5m
2026-07-20 N4370N - Jul 20, 14:50 UTCJul 20, 15:45 UTC55m
2026-07-20 N4370N - Jul 20, 01:55 UTCJul 20, 02:45 UTC50m
2026-07-19 N4370N MIC → MIC Jul 19, 20:40 UTCJul 19, 22:20 UTC1h 40m
2026-07-19 N4370N - Jul 19, 17:30 UTCJul 19, 18:00 UTC30m
2026-07-19 N4370N - Jul 19, 15:10 UTCJul 19, 16:00 UTC50m
2026-07-18 N4370N MIC → MIC Jul 18, 22:20 UTCJul 18, 23:10 UTC50m
2026-07-18 N4370N - Jul 18, 20:25 UTCJul 18, 21:35 UTC1h 10m
2026-07-17 N4370N MIC → MIC Jul 17, 14:55 UTCJul 17, 15:44 UTC50m
2026-07-15 N4370N MIC → MIC Jul 15, 20:30 UTCJul 15, 22:00 UTC1h 30m
2026-07-15 N4370N MIC → MIC Jul 15, 15:00 UTCJul 15, 15:50 UTC50m
2026-07-14 N4370N - Jul 14, 23:40 UTCJul 15, 00:15 UTC35m
2026-07-14 N4370N - Jul 14, 22:40 UTCJul 14, 23:00 UTC19m
2026-07-14 N4370N - Jul 14, 19:05 UTCJul 14, 19:35 UTC30m
2026-07-14 N4370N - Jul 14, 17:35 UTCJul 14, 18:35 UTC1h 0m
2026-07-13 N4370N - Jul 13, 20:15 UTCJul 13, 20:30 UTC15m
2026-07-13 N4370N - Jul 13, 19:05 UTCJul 13, 19:35 UTC30m
2026-07-13 N4370N - Jul 13, 16:50 UTCJul 13, 17:40 UTC50m
2026-07-13 N4370N - Jul 13, 13:10 UTCJul 13, 15:25 UTC2h 15m
2026-07-12 N4370N - Jul 12, 18:55 UTCJul 12, 19:45 UTC50m
2026-07-12 N4370N - Jul 12, 14:50 UTCJul 12, 15:50 UTC1h 0m
2026-07-11 N4370N MIC → MIC Jul 11, 22:25 UTCJul 11, 23:15 UTC50m
2026-07-11 N4370N MIC → MIC Jul 11, 16:35 UTCJul 11, 17:50 UTC1h 15m
2026-07-11 N4370N - Jul 11, 00:55 UTCJul 11, 01:45 UTC50m
2026-07-10 N4370N MIC → MIC Jul 10, 17:15 UTCJul 10, 18:55 UTC1h 40m
2026-07-10 N4370N MIC → MIC Jul 10, 14:40 UTCJul 10, 15:55 UTC1h 15m
2026-07-09 N4370N - Jul 9, 18:50 UTCJul 9, 19:50 UTC1h 0m
2026-07-09 N4370N - Jul 9, 15:00 UTCJul 9, 16:45 UTC1h 45m
2026-07-05 N4370N MIC → MIC Jul 5, 15:25 UTCJul 5, 16:00 UTC35m
2026-07-04 N4370N MIC → MIC Jul 4, 17:35 UTCJul 4, 19:00 UTC1h 25m
2026-07-03 N4370N - Jul 3, 16:55 UTCJul 3, 18:40 UTC1h 45m
2026-07-03 N4370N - Jul 3, 14:30 UTCJul 3, 15:00 UTC30m
2026-07-02 N4370N - Jul 2, 14:40 UTCJul 2, 16:10 UTC1h 30m
2026-07-01 N4370N MIC → MIC Jul 1, 18:40 UTCJul 1, 19:15 UTC35m
2026-07-01 N4370N MIC → MIC Jul 1, 14:45 UTCJul 1, 15:30 UTC45m
2026-07-01 N4370N - Jul 1, 00:55 UTCJul 1, 01:40 UTC45m
2026-06-30 N4370N - Jun 30, 19:10 UTCJun 30, 20:40 UTC1h 30m
2026-06-28 N4370N MIC → MIC Jun 28, 22:59 UTCJun 29, 00:44 UTC1h 45m
2026-06-28 N4370N MIC → MIC Jun 28, 01:19 UTCJun 28, 02:14 UTC55m
2026-06-27 N4370N - Jun 27, 18:45 UTCJun 27, 19:34 UTC50m
2026-06-27 N4370N MIC → MIC Jun 27, 12:50 UTCJun 27, 13:44 UTC55m
2026-06-26 N4370N - Jun 26, 19:55 UTCJun 26, 21:24 UTC1h 30m
2026-06-25 N4370N - Jun 25, 20:49 UTCJun 25, 22:29 UTC1h 40m
2026-06-21 N4370N - Jun 21, 14:15 UTCJun 21, 20:14 UTC6h 0m
2026-06-21 N4370N - Jun 21, 13:29 UTCJun 21, 13:39 UTC10m
2026-06-20 N4370N - Jun 20, 17:14 UTCJun 20, 17:44 UTC30m

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 N4370N page for operator, model, and routing details .

Mode-S A53F84 frequently asked

What is Mode-S code A53F84?
A53F84 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4370N.
Where is Mode-S A53F84 registered?
Mode-S code A53F84 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 A53F84 broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 18:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A53F84, octal 51237604, decimal 10,829,700.
What flights does A53F84 operate?
Mode-S A53F84 has broadcast 1 distinct callsign, including N4370N.