Apparatus

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sensors Mode-S transponder

AD3B27

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9513H · CESSNA 172 Skyhawk · operated by HIGH FLIGHT ACADEMY LLC

Hex
AD3B27
Octal
53235447
Decimal
11,352,871
Country
US
Tail
N9513H
Type
C172
No current signal · last broadcast 1d ago
Flights observed
299
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AD3B27.

Country allocation

The ICAO 24-bit address AD3B27 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
N9513H - 299 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 N9513H BTP → BTP Jul 16, 13:00 UTCJul 16, 13:54 UTC55m
2026-07-16 N9513H BTP → BTP Jul 16, 01:00 UTCJul 16, 02:40 UTC1h 40m
2026-07-15 N9513H BTP → BTP Jul 15, 23:30 UTCJul 16, 00:10 UTC40m
2026-07-15 N9513H - Jul 15, 21:50 UTCJul 15, 22:45 UTC55m
2026-07-15 N9513H BTP → BTP Jul 15, 20:15 UTCJul 15, 21:20 UTC1h 5m
2026-07-15 N9513H - Jul 15, 18:45 UTCJul 15, 19:25 UTC40m
2026-07-15 N9513H BTP → BTP Jul 15, 13:00 UTCJul 15, 14:45 UTC1h 45m
2026-07-15 N9513H BTP → BTP Jul 15, 01:50 UTCJul 15, 03:05 UTC1h 15m
2026-07-14 N9513H BTP → BTP Jul 14, 23:20 UTCJul 15, 00:20 UTC1h 0m
2026-07-14 N9513H BTP → BTP Jul 14, 22:20 UTCJul 14, 23:15 UTC54m
2026-07-14 N9513H BTP → BTP Jul 14, 20:30 UTCJul 14, 21:30 UTC1h 0m
2026-07-14 N9513H BTP → BTP Jul 14, 19:35 UTCJul 14, 19:45 UTC10m
2026-07-14 N9513H BTP → BTP Jul 14, 18:55 UTCJul 14, 19:30 UTC35m
2026-07-14 N9513H BTP → BTP Jul 14, 16:05 UTCJul 14, 17:55 UTC1h 50m
2026-07-14 N9513H - Jul 14, 12:55 UTCJul 14, 14:40 UTC1h 45m
2026-07-14 N9513H BTP → BTP Jul 14, 01:50 UTCJul 14, 04:05 UTC2h 15m
2026-07-13 N9513H BTP → BTP Jul 13, 23:15 UTCJul 14, 00:30 UTC1h 15m
2026-07-13 N9513H BTP → BTP Jul 13, 21:55 UTCJul 13, 22:20 UTC25m
2026-07-13 N9513H BTP → BTP Jul 13, 19:15 UTCJul 13, 21:15 UTC2h 0m
2026-07-13 N9513H BTP → BTP Jul 13, 17:30 UTCJul 13, 18:10 UTC40m
2026-07-12 N9513H BTP → BTP Jul 12, 01:30 UTCJul 12, 03:30 UTC2h 0m
2026-07-11 N9513H - Jul 11, 23:50 UTCJul 12, 00:10 UTC20m
2026-07-11 N9513H - Jul 11, 22:15 UTCJul 11, 22:45 UTC30m
2026-07-11 N9513H - Jul 11, 19:35 UTCJul 11, 20:40 UTC1h 5m
2026-07-11 N9513H - Jul 11, 18:15 UTCJul 11, 18:30 UTC15m
2026-07-11 N9513H BTP → BTP Jul 11, 01:15 UTCJul 11, 06:25 UTC5h 10m
2026-07-10 N9513H BTP → BTP Jul 10, 22:10 UTCJul 10, 23:35 UTC1h 25m
2026-07-10 N9513H BTP → BTP Jul 10, 17:20 UTCJul 10, 17:55 UTC35m
2026-07-10 N9513H BTP → BTP Jul 10, 13:20 UTCJul 10, 13:25 UTC5m
2026-07-09 N9513H BTP → BTP Jul 9, 22:10 UTCJul 9, 23:35 UTC1h 25m
2026-07-09 N9513H BTP → BTP Jul 9, 20:20 UTCJul 9, 21:25 UTC1h 5m
2026-07-09 N9513H BTP → BTP Jul 9, 18:55 UTCJul 9, 19:35 UTC40m
2026-07-09 N9513H BTP → BTP Jul 9, 15:55 UTCJul 9, 17:05 UTC1h 10m
2026-07-09 N9513H - Jul 9, 14:30 UTCJul 9, 15:00 UTC30m
2026-07-09 N9513H BTP → BTP Jul 9, 13:20 UTCJul 9, 13:45 UTC25m
2026-07-08 N9513H BTP → BTP Jul 8, 23:15 UTCJul 8, 23:55 UTC40m
2026-07-08 N9513H BTP → BTP Jul 8, 20:30 UTCJul 8, 21:45 UTC1h 15m
2026-07-08 N9513H BTP → BTP Jul 8, 18:55 UTCJul 8, 19:50 UTC55m
2026-07-08 N9513H - Jul 8, 16:05 UTCJul 8, 18:20 UTC2h 15m
2026-07-08 N9513H BTP → BTP Jul 8, 13:10 UTCJul 8, 15:10 UTC2h 0m
2026-07-07 N9513H BTP → BTP Jul 7, 19:00 UTCJul 7, 19:50 UTC50m
2026-07-07 N9513H BTP → BTP Jul 7, 16:00 UTCJul 7, 18:15 UTC2h 15m
2026-07-04 N9513H BTP → BTP Jul 4, 18:50 UTCJul 4, 19:40 UTC50m
2026-07-04 N9513H BTP → BTP Jul 4, 13:10 UTCJul 4, 14:00 UTC50m
2026-07-03 N9513H BTP → BTP Jul 3, 19:15 UTCJul 3, 19:55 UTC40m
2026-07-03 N9513H - Jul 3, 17:25 UTCJul 3, 18:10 UTC45m
2026-07-03 N9513H - Jul 3, 15:55 UTCJul 3, 16:30 UTC35m
2026-07-03 N9513H BTP → BTP Jul 3, 11:45 UTCJul 3, 13:20 UTC1h 35m
2026-07-02 N9513H BTP → BTP Jul 2, 21:55 UTCJul 2, 22:10 UTC15m
2026-07-02 N9513H BTP → BTP Jul 2, 18:55 UTCJul 2, 19:45 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 N9513H page for operator, model, and routing details .

Mode-S AD3B27 frequently asked

What is Mode-S code AD3B27?
AD3B27 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9513H.
Where is Mode-S AD3B27 registered?
Mode-S code AD3B27 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 AD3B27 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD3B27, octal 53235447, decimal 11,352,871.
What flights does AD3B27 operate?
Mode-S AD3B27 has broadcast 1 distinct callsign, including N9513H.