Apparatus

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sensors Mode-S transponder

A70A9E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N553AP · CESSNA 172 Skyhawk · operated by AVIATION PARADISE LLC

Hex
A70A9E
Octal
51605236
Decimal
10,947,230
Country
US
Tail
N553AP
Type
C172
No current signal · last broadcast Jul 25, 16:05 UTC
Flights observed
109
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 16:05 UTC

Last known position

Most recent position reported by Mode-S A70A9E.

Country allocation

The ICAO 24-bit address A70A9E 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
N553AP - 109 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N553AP - Jul 25, 15:55 UTCJul 25, 16:05 UTC10m
2026-07-21 N553AP TMB → TMB Jul 21, 19:40 UTCJul 21, 20:25 UTC45m
2026-07-21 N553AP TMB → TMB Jul 21, 15:45 UTCJul 21, 16:30 UTC45m
2026-07-15 N553AP - Jul 15, 16:15 UTCJul 15, 17:15 UTC1h 0m
2026-07-15 N553AP - Jul 15, 14:00 UTCJul 15, 15:20 UTC1h 20m
2026-07-14 N553AP - Jul 14, 21:25 UTCJul 14, 23:50 UTC2h 24m
2026-07-14 N553AP - Jul 14, 16:10 UTCJul 14, 18:40 UTC2h 30m
2026-07-12 N553AP - Jul 12, 21:45 UTCJul 12, 23:00 UTC1h 15m
2026-07-12 N553AP TMB → TMB Jul 12, 20:01 UTCJul 12, 20:55 UTC55m
2026-07-08 N553AP - Jul 8, 18:00 UTCJul 8, 19:00 UTC1h 0m
2026-07-08 N553AP TMB → TMB Jul 8, 13:50 UTCJul 8, 14:55 UTC1h 5m
2026-07-08 N553AP TMB → TMB Jul 8, 11:45 UTCJul 8, 12:40 UTC55m
2026-07-07 N553AP TMB → TMB Jul 7, 19:35 UTCJul 7, 20:15 UTC40m
2026-07-07 N553AP - Jul 7, 16:20 UTCJul 7, 17:20 UTC1h 0m
2026-07-07 N553AP - Jul 7, 13:55 UTCJul 7, 14:50 UTC55m
2026-07-07 N553AP TMB → TMB Jul 7, 00:30 UTCJul 7, 01:50 UTC1h 20m
2026-07-06 N553AP - Jul 6, 13:50 UTCJul 6, 14:05 UTC15m
2026-07-06 N553AP - Jul 6, 11:50 UTCJul 6, 12:50 UTC1h 0m
2026-07-04 N553AP TMB → TMB Jul 4, 17:35 UTCJul 4, 18:05 UTC30m
2026-07-03 N553AP TMB → TMB Jul 3, 23:50 UTCJul 4, 01:10 UTC1h 20m
2026-07-03 N553AP - Jul 3, 03:10 UTCJul 3, 03:20 UTC10m
2026-07-03 N553AP - Jul 3, 02:00 UTCJul 3, 02:30 UTC30m
2026-07-02 N553AP TMB → TMB Jul 2, 16:00 UTCJul 2, 16:45 UTC45m
2026-06-29 N553AP - Jun 29, 17:34 UTCJun 29, 18:30 UTC55m
2026-06-29 N553AP - Jun 29, 14:09 UTCJun 29, 15:00 UTC50m
2026-06-26 N553AP TMB → TMB Jun 26, 13:55 UTCJun 26, 15:20 UTC1h 25m
2026-06-25 N553AP TMB → TMB Jun 25, 13:59 UTCJun 25, 14:44 UTC45m
2026-06-25 N553AP - Jun 25, 10:39 UTCJun 25, 11:50 UTC1h 10m
2026-06-23 N553AP - Jun 23, 15:40 UTCJun 23, 16:20 UTC40m
2026-06-23 N553AP - Jun 23, 10:49 UTCJun 23, 11:59 UTC1h 10m
2026-06-23 N553AP - Jun 23, 09:14 UTCJun 23, 09:24 UTC10m
2026-06-22 N553AP TMB → TMB Jun 22, 21:54 UTCJun 22, 22:40 UTC45m
2026-06-22 N553AP - Jun 22, 19:54 UTCJun 22, 20:49 UTC55m
2026-06-22 N553AP - Jun 22, 00:10 UTCJun 22, 01:00 UTC50m
2026-06-21 N553AP - Jun 21, 01:49 UTCJun 21, 02:04 UTC15m
2026-06-20 N553AP - Jun 20, 22:30 UTCJun 21, 00:49 UTC2h 20m
2026-06-20 N553AP TMB → TPA Jun 20, 11:49 UTCJun 20, 14:05 UTC2h 15m
2026-06-19 N553AP TMB → TMB Jun 19, 23:00 UTCJun 20, 00:09 UTC1h 10m
2026-06-19 N553AP - Jun 19, 17:55 UTCJun 19, 18:59 UTC1h 5m
2026-06-19 N553AP - Jun 19, 15:44 UTCJun 19, 16:29 UTC45m
2026-06-19 N553AP - Jun 19, 14:04 UTCJun 19, 14:49 UTC45m
2026-06-19 N553AP - Jun 19, 11:45 UTCJun 19, 12:19 UTC35m
2026-06-18 N553AP TMB → TMB Jun 18, 20:00 UTCJun 18, 21:00 UTC1h 0m
2026-06-18 N553AP - Jun 18, 11:55 UTCJun 18, 14:15 UTC2h 20m
2026-06-17 N553AP TMB → TMB Jun 17, 22:30 UTCJun 17, 23:50 UTC1h 20m
2026-06-16 N553AP - Jun 16, 17:49 UTCJun 16, 18:55 UTC1h 5m
2026-06-16 N553AP TMB → TMB Jun 16, 15:55 UTCJun 16, 16:50 UTC55m
2026-06-16 N553AP TMB → TMB Jun 16, 13:55 UTCJun 16, 15:05 UTC1h 10m
2026-06-15 N553AP - Jun 15, 15:45 UTCJun 15, 16:59 UTC1h 15m
2026-06-14 N553AP - Jun 14, 13:40 UTCJun 14, 14:20 UTC40m

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 N553AP page for operator, model, and routing details .

Mode-S A70A9E frequently asked

What is Mode-S code A70A9E?
A70A9E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N553AP.
Where is Mode-S A70A9E registered?
Mode-S code A70A9E 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 A70A9E broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 16:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A70A9E, octal 51605236, decimal 10,947,230.
What flights does A70A9E operate?
Mode-S A70A9E has broadcast 1 distinct callsign, including N553AP.