Apparatus

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sensors Mode-S transponder

A55DED

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N445HP · operated by CHOPRA FAMILY LP

Hex
A55DED
Octal
51256755
Decimal
10,837,485
Country
US
Tail
N445HP
Type
BT36
No current signal · last broadcast 18d ago
Flights observed
72
Distinct callsigns
1
Country
US
Last broadcast
18d ago

Last known position

Most recent position reported by Mode-S A55DED.

Country allocation

The ICAO 24-bit address A55DED 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
N445HP - 72 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 N445HP - Jul 23, 17:55 UTCJul 23, 18:30 UTC35m
2026-07-23 N445HP - Jul 23, 14:35 UTCJul 23, 16:05 UTC1h 30m
2026-07-23 N445HP - Jul 23, 01:35 UTCJul 23, 01:50 UTC15m
2026-07-22 N445HP - Jul 22, 23:00 UTCJul 22, 23:10 UTC10m
2026-07-15 N445HP - Jul 15, 20:45 UTCJul 15, 21:40 UTC55m
2026-07-14 N445HP - Jul 14, 00:35 UTCJul 14, 01:25 UTC50m
2026-07-13 N445HP - Jul 13, 22:35 UTCJul 13, 23:20 UTC45m
2026-07-12 N445HP CCR → SBP Jul 12, 17:40 UTCJul 12, 19:10 UTC1h 30m
2026-07-08 N445HP - Jul 8, 19:25 UTCJul 8, 20:05 UTC40m
2026-07-08 N445HP - Jul 8, 16:40 UTCJul 8, 16:50 UTC10m
2026-07-08 N445HP CCR → SCK Jul 8, 15:35 UTCJul 8, 15:55 UTC20m
2026-07-07 N445HP - Jul 7, 23:20 UTCJul 8, 00:25 UTC1h 5m
2026-07-04 N445HP CCR → SBP Jul 4, 19:05 UTCJul 4, 20:25 UTC1h 20m
2026-07-03 N445HP SCK → CCR Jul 3, 21:30 UTCJul 3, 21:55 UTC25m
2026-07-03 N445HP - Jul 3, 20:15 UTCJul 3, 20:50 UTC35m
2026-07-03 N445HP - Jul 3, 18:55 UTCJul 3, 19:30 UTC35m
2026-06-30 N445HP - Jun 30, 19:15 UTCJun 30, 20:35 UTC1h 20m
2026-06-30 N445HP MHR → SMF Jun 30, 18:45 UTCJun 30, 18:55 UTC10m
2026-06-30 N445HP - Jun 30, 14:35 UTCJun 30, 16:00 UTC1h 25m
2026-06-28 N445HP - Jun 28, 22:15 UTCJun 28, 23:20 UTC1h 5m
2026-06-28 N445HP - Jun 28, 02:39 UTCJun 28, 03:25 UTC45m
2026-06-27 N445HP - Jun 27, 22:20 UTCJun 27, 22:49 UTC30m
2026-06-27 N445HP - Jun 27, 20:34 UTCJun 27, 21:59 UTC1h 25m
2026-06-27 N445HP - Jun 27, 17:59 UTCJun 27, 19:55 UTC1h 55m
2026-06-27 N445HP - Jun 27, 16:00 UTCJun 27, 17:55 UTC1h 55m
2026-06-21 N445HP - Jun 21, 20:54 UTCJun 21, 22:54 UTC2h 0m
2026-06-21 N445HP CCR → EUG Jun 21, 16:39 UTCJun 21, 19:09 UTC2h 30m
2026-06-20 N445HP - Jun 20, 23:39 UTCJun 21, 00:49 UTC1h 10m
2026-06-16 N445HP - Jun 16, 22:00 UTCJun 16, 22:10 UTC10m
2026-06-16 N445HP - Jun 16, 20:40 UTCJun 16, 21:30 UTC50m
2026-06-16 N445HP CCR → MOD Jun 16, 19:25 UTCJun 16, 19:50 UTC26m
2026-06-16 N445HP - Jun 16, 17:05 UTCJun 16, 18:15 UTC1h 10m
2026-06-16 N445HP - Jun 16, 02:34 UTCJun 16, 03:20 UTC45m
2026-06-15 N445HP - Jun 15, 23:30 UTCJun 16, 00:15 UTC45m
2026-06-13 N445HP - Jun 13, 19:25 UTCJun 13, 20:35 UTC1h 10m
2026-06-12 N445HP - Jun 12, 20:05 UTCJun 12, 21:20 UTC1h 15m
2026-06-10 N445HP - Jun 10, 00:10 UTCJun 10, 01:40 UTC1h 30m
2026-06-09 N445HP - Jun 9, 21:50 UTCJun 9, 23:05 UTC1h 15m
2026-06-09 N445HP - Jun 9, 03:25 UTCJun 9, 04:35 UTC1h 10m
2026-06-09 N445HP - Jun 9, 00:25 UTCJun 9, 02:00 UTC1h 35m
2026-06-08 N445HP - Jun 8, 20:50 UTCJun 8, 22:50 UTC2h 0m
2026-06-07 N445HP - Jun 7, 04:20 UTCJun 7, 05:20 UTC1h 0m
2026-06-04 N445HP - Jun 4, 17:05 UTCJun 4, 18:05 UTC1h 0m
2026-06-03 N445HP - Jun 3, 23:20 UTCJun 4, 00:30 UTC1h 10m
2026-06-03 N445HP - Jun 3, 20:30 UTCJun 3, 20:55 UTC25m
2026-06-03 N445HP - Jun 3, 17:40 UTCJun 3, 18:50 UTC1h 10m
2026-06-02 N445HP CCR → SBP Jun 2, 22:55 UTCJun 3, 00:25 UTC1h 30m
2026-06-02 N445HP - Jun 2, 18:25 UTCJun 2, 20:10 UTC1h 45m
2026-05-31 N445HP - May 31, 22:50 UTCMay 31, 23:20 UTC30m
2026-05-31 N445HP - May 31, 22:00 UTCMay 31, 22:40 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 N445HP page for operator, model, and routing details .

Mode-S A55DED frequently asked

What is Mode-S code A55DED?
A55DED is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N445HP.
Where is Mode-S A55DED registered?
Mode-S code A55DED 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 A55DED broadcasting right now?
No active broadcast right now. Last signal was 18d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A55DED, octal 51256755, decimal 10,837,485.
What flights does A55DED operate?
Mode-S A55DED has broadcast 1 distinct callsign, including N445HP.