Apparatus

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sensors Mode-S transponder

A64DA4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N505MP · HUGHES 500 · operated by CITY OF MESA POLICE DEPT, AVIATION UNIT

Hex
A64DA4
Octal
51446644
Decimal
10,898,852
Country
US
Tail
N505MP
Type
H500
No current signal · last broadcast 32m ago
Flights observed
163
Distinct callsigns
1
Country
US
Last broadcast
32m ago

Last known position

Most recent position reported by Mode-S A64DA4.

Country allocation

The ICAO 24-bit address A64DA4 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
N505MP - 163 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N505MP - Jul 14, 08:15 UTCJul 14, 09:00 UTC45m
2026-07-14 N505MP MSC → MSC Jul 14, 06:50 UTCJul 14, 07:50 UTC1h 0m
2026-07-14 N505MP - Jul 14, 04:45 UTCJul 14, 06:15 UTC1h 30m
2026-07-13 N505MP MSC → MSC Jul 13, 05:25 UTCJul 13, 06:05 UTC40m
2026-07-12 N505MP - Jul 12, 07:50 UTCJul 12, 09:05 UTC1h 15m
2026-07-12 N505MP MSC → MSC Jul 12, 05:35 UTCJul 12, 06:10 UTC35m
2026-07-12 N505MP MSC → MSC Jul 12, 02:15 UTCJul 12, 03:40 UTC1h 25m
2026-07-11 N505MP MSC → MSC Jul 11, 07:55 UTCJul 11, 08:45 UTC50m
2026-07-11 N505MP - Jul 11, 04:50 UTCJul 11, 06:15 UTC1h 25m
2026-07-11 N505MP - Jul 11, 01:30 UTCJul 11, 02:55 UTC1h 25m
2026-07-10 N505MP - Jul 10, 22:25 UTCJul 10, 23:20 UTC55m
2026-07-10 N505MP - Jul 10, 19:50 UTCJul 10, 20:45 UTC55m
2026-07-10 N505MP - Jul 10, 08:05 UTCJul 10, 08:20 UTC15m
2026-07-10 N505MP - Jul 10, 05:15 UTCJul 10, 07:10 UTC1h 55m
2026-07-10 N505MP - Jul 10, 02:15 UTCJul 10, 03:50 UTC1h 35m
2026-07-09 N505MP - Jul 9, 22:20 UTCJul 9, 23:25 UTC1h 5m
2026-07-09 N505MP MSC → MSC Jul 9, 19:35 UTCJul 9, 20:20 UTC45m
2026-07-06 N505MP - Jul 6, 08:05 UTCJul 6, 08:55 UTC50m
2026-07-06 N505MP MSC → MSC Jul 6, 04:50 UTCJul 6, 06:20 UTC1h 30m
2026-07-06 N505MP - Jul 6, 01:50 UTCJul 6, 03:10 UTC1h 20m
2026-07-05 N505MP - Jul 5, 05:50 UTCJul 5, 07:15 UTC1h 25m
2026-07-05 N505MP - Jul 5, 01:40 UTCJul 5, 02:50 UTC1h 10m
2026-07-04 N505MP - Jul 4, 07:05 UTCJul 4, 08:00 UTC55m
2026-07-04 N505MP MSC → MSC Jul 4, 05:00 UTCJul 4, 06:30 UTC1h 30m
2026-07-04 N505MP - Jul 4, 02:00 UTCJul 4, 03:25 UTC1h 25m
2026-07-03 N505MP - Jul 3, 20:40 UTCJul 3, 21:45 UTC1h 5m
2026-07-03 N505MP - Jul 3, 17:00 UTCJul 3, 17:30 UTC30m
2026-07-03 N505MP - Jul 3, 16:05 UTCJul 3, 16:25 UTC20m
2026-07-03 N505MP MSC → MSC Jul 3, 08:05 UTCJul 3, 08:55 UTC50m
2026-07-03 N505MP - Jul 3, 05:10 UTCJul 3, 06:35 UTC1h 25m
2026-07-03 N505MP - Jul 3, 02:15 UTCJul 3, 03:45 UTC1h 30m
2026-07-02 N505MP - Jul 2, 22:40 UTCJul 2, 22:55 UTC15m
2026-07-02 N505MP - Jul 2, 19:20 UTCJul 2, 20:35 UTC1h 15m
2026-07-02 N505MP - Jul 2, 15:35 UTCJul 2, 16:10 UTC35m
2026-07-02 N505MP MSC → MSC Jul 2, 06:30 UTCJul 2, 07:15 UTC45m
2026-07-02 N505MP - Jul 2, 04:50 UTCJul 2, 06:25 UTC1h 35m
2026-07-02 N505MP - Jul 2, 01:10 UTCJul 2, 02:40 UTC1h 30m
2026-07-01 N505MP - Jul 1, 22:45 UTCJul 1, 23:45 UTC1h 0m
2026-07-01 N505MP - Jul 1, 19:55 UTCJul 1, 20:30 UTC35m
2026-07-01 N505MP - Jul 1, 08:25 UTCJul 1, 08:55 UTC30m
2026-07-01 N505MP MSC → MSC Jul 1, 05:30 UTCJul 1, 07:05 UTC1h 35m
2026-07-01 N505MP MSC → MSC Jul 1, 01:55 UTCJul 1, 03:30 UTC1h 35m
2026-06-30 N505MP MSC → MSC Jun 30, 22:25 UTCJun 30, 23:35 UTC1h 10m
2026-06-30 N505MP - Jun 30, 19:25 UTCJun 30, 20:05 UTC40m
2026-06-24 N505MP - Jun 24, 21:00 UTCJun 24, 21:50 UTC50m
2026-06-24 N505MP - Jun 24, 19:20 UTCJun 24, 20:14 UTC55m
2026-06-23 N505MP - Jun 23, 21:45 UTCJun 23, 21:54 UTC10m
2026-06-23 N505MP MSC → MSC Jun 23, 08:00 UTCJun 23, 08:45 UTC45m
2026-06-23 N505MP MSC → MSC Jun 23, 06:55 UTCJun 23, 07:09 UTC15m
2026-06-23 N505MP - Jun 23, 04:25 UTCJun 23, 05:20 UTC55m

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 N505MP page for operator, model, and routing details .

Mode-S A64DA4 frequently asked

What is Mode-S code A64DA4?
A64DA4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N505MP.
Where is Mode-S A64DA4 registered?
Mode-S code A64DA4 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 A64DA4 broadcasting right now?
No active broadcast right now. Last signal was 32m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A64DA4, octal 51446644, decimal 10,898,852.
What flights does A64DA4 operate?
Mode-S A64DA4 has broadcast 1 distinct callsign, including N505MP.