Apparatus

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sensors Mode-S transponder

AA021E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N744HJ · ROBINSON R-44 Raven · operated by RAVEN HELICOPTERS LLC

Hex
AA021E
Octal
52401036
Decimal
11,141,662
Country
US
Tail
N744HJ
Type
R44
No current signal · last broadcast 12h ago
Flights observed
77
Distinct callsigns
1
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S AA021E.

Country allocation

The ICAO 24-bit address AA021E 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
N744HJ - 77 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N744HJ - Jul 17, 22:15 UTCJul 17, 22:40 UTC25m
2026-07-17 N744HJ - Jul 17, 02:10 UTCJul 17, 02:34 UTC25m
2026-07-16 N744HJ - Jul 16, 01:15 UTCJul 16, 01:35 UTC20m
2026-07-16 N744HJ - Jul 16, 00:15 UTCJul 16, 00:35 UTC20m
2026-07-12 N744HJ - Jul 12, 22:10 UTCJul 12, 22:30 UTC20m
2026-07-11 N744HJ - Jul 11, 01:30 UTCJul 11, 01:50 UTC20m
2026-07-09 N744HJ - Jul 9, 02:00 UTCJul 9, 02:25 UTC25m
2026-07-08 N744HJ - Jul 8, 01:00 UTCJul 8, 01:35 UTC35m
2026-07-07 N744HJ - Jul 7, 18:25 UTCJul 7, 19:00 UTC35m
2026-07-05 N744HJ NKX → SEE Jul 5, 22:40 UTCJul 5, 23:35 UTC55m
2026-07-05 N744HJ NKX → SEE Jul 5, 21:10 UTCJul 5, 21:30 UTC20m
2026-07-04 N744HJ - Jul 4, 02:00 UTCJul 4, 02:35 UTC35m
2026-07-04 N744HJ - Jul 4, 00:40 UTCJul 4, 01:15 UTC35m
2026-06-30 N744HJ - Jun 30, 00:09 UTCJun 30, 00:39 UTC30m
2026-06-29 N744HJ - Jun 29, 02:25 UTCJun 29, 02:39 UTC15m
2026-06-29 N744HJ - Jun 29, 00:05 UTCJun 29, 00:24 UTC20m
2026-06-28 N744HJ - Jun 28, 02:25 UTCJun 28, 02:44 UTC20m
2026-06-25 N744HJ - Jun 25, 16:29 UTCJun 25, 16:45 UTC15m
2026-06-25 N744HJ - Jun 25, 00:49 UTCJun 25, 01:09 UTC20m
2026-06-22 N744HJ - Jun 22, 21:45 UTCJun 22, 22:10 UTC25m
2026-06-22 N744HJ - Jun 22, 18:04 UTCJun 22, 18:30 UTC25m
2026-06-21 N744HJ - Jun 21, 18:00 UTCJun 22, 01:00 UTC7h 0m
2026-06-20 N744HJ - Jun 20, 17:39 UTCJun 20, 20:14 UTC2h 35m
2026-06-19 N744HJ - Jun 19, 00:40 UTCJun 19, 01:10 UTC30m
2026-06-18 N744HJ - Jun 18, 20:00 UTCJun 18, 20:40 UTC40m
2026-06-15 N744HJ - Jun 15, 01:15 UTCJun 15, 02:20 UTC1h 5m
2026-06-14 N744HJ - Jun 14, 23:54 UTCJun 15, 00:40 UTC45m
2026-06-14 N744HJ - Jun 14, 22:10 UTCJun 14, 22:35 UTC25m
2026-06-14 N744HJ - Jun 14, 02:20 UTCJun 14, 03:15 UTC55m
2026-06-14 N744HJ MYF → SEE Jun 14, 01:10 UTCJun 14, 01:30 UTC20m
2026-06-13 N744HJ - Jun 13, 23:40 UTCJun 14, 00:05 UTC25m
2026-06-12 N744HJ - Jun 12, 23:40 UTCJun 13, 00:30 UTC50m
2026-06-12 N744HJ - Jun 12, 01:50 UTCJun 12, 02:10 UTC20m
2026-06-12 N744HJ MYF → SEE Jun 12, 00:10 UTCJun 12, 00:30 UTC20m
2026-06-11 N744HJ - Jun 11, 00:15 UTCJun 11, 00:35 UTC20m
2026-06-09 N744HJ - Jun 9, 01:00 UTCJun 9, 02:15 UTC1h 15m
2026-06-08 N744HJ - Jun 8, 21:40 UTCJun 8, 22:25 UTC45m
2026-06-07 N744HJ - Jun 7, 01:35 UTCJun 7, 03:00 UTC1h 25m
2026-06-06 N744HJ - Jun 6, 15:44 UTCJun 6, 16:45 UTC1h 0m
2026-06-05 N744HJ - Jun 5, 18:20 UTCJun 5, 19:40 UTC1h 20m
2026-06-05 N744HJ - Jun 5, 17:10 UTCJun 5, 17:45 UTC35m
2026-06-05 N744HJ - Jun 5, 01:10 UTCJun 5, 01:20 UTC10m
2026-06-01 N744HJ - Jun 1, 21:00 UTCJun 1, 21:25 UTC25m
2026-05-23 N744HJ - May 23, 22:35 UTCMay 23, 23:20 UTC45m
2026-05-23 N744HJ - May 23, 00:25 UTCMay 23, 01:20 UTC55m
2026-05-21 N744HJ - May 21, 22:05 UTCMay 21, 22:25 UTC20m
2026-05-18 N744HJ - May 18, 21:15 UTCMay 18, 21:40 UTC25m
2026-05-17 N744HJ - May 17, 23:45 UTCMay 18, 00:20 UTC35m
2026-05-16 N744HJ - May 16, 02:00 UTCMay 16, 02:25 UTC25m
2026-05-15 N744HJ - May 15, 23:30 UTCMay 16, 00:05 UTC35m

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 N744HJ page for operator, model, and routing details .

Mode-S AA021E frequently asked

What is Mode-S code AA021E?
AA021E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N744HJ.
Where is Mode-S AA021E registered?
Mode-S code AA021E 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 AA021E broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA021E, octal 52401036, decimal 11,141,662.
What flights does AA021E operate?
Mode-S AA021E has broadcast 1 distinct callsign, including N744HJ.