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sensors Mode-S transponder

ACCA51

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N923LH · AIR TRACTOR AT-504 · operated by GROWERS AIR SERVICE INC

Hex
ACCA51
Octal
53145121
Decimal
11,323,985
Country
US
Tail
N923LH
Type
AT5T
No current signal · last broadcast Jul 24, 16:25 UTC
Flights observed
123
Distinct callsigns
1
Country
US
Last broadcast
Jul 24, 16:25 UTC

Last known position

Most recent position reported by Mode-S ACCA51.

Country allocation

The ICAO 24-bit address ACCA51 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
N923LH - 123 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 N923LH - Jul 24, 15:25 UTCJul 24, 16:25 UTC1h 0m
2026-07-24 N923LH - Jul 24, 12:45 UTCJul 24, 14:30 UTC1h 45m
2026-07-23 N923LH - Jul 23, 19:05 UTCJul 23, 19:15 UTC10m
2026-07-23 N923LH - Jul 23, 16:55 UTCJul 23, 17:05 UTC10m
2026-07-22 N923LH - Jul 22, 20:20 UTCJul 22, 23:10 UTC2h 50m
2026-07-22 N923LH - Jul 22, 13:00 UTCJul 22, 20:10 UTC7h 10m
2026-07-21 N923LH - Jul 21, 12:55 UTCJul 21, 16:40 UTC3h 45m
2026-07-20 N923LH - Jul 20, 12:45 UTCJul 20, 17:50 UTC5h 5m
2026-07-17 N923LH - Jul 17, 13:00 UTCJul 17, 16:29 UTC3h 30m
2026-07-16 N923LH - Jul 16, 15:19 UTCJul 16, 15:30 UTC10m
2026-07-16 N923LH - Jul 16, 14:55 UTCJul 16, 15:05 UTC10m
2026-07-16 N923LH - Jul 16, 12:40 UTCJul 16, 13:25 UTC45m
2026-07-15 N923LH - Jul 15, 20:50 UTCJul 15, 22:15 UTC1h 25m
2026-07-15 N923LH - Jul 15, 18:55 UTCJul 15, 20:45 UTC1h 50m
2026-07-15 N923LH - Jul 15, 17:35 UTCJul 15, 18:45 UTC1h 10m
2026-07-15 N923LH - Jul 15, 12:50 UTCJul 15, 17:20 UTC4h 30m
2026-07-14 N923LH - Jul 14, 13:00 UTCJul 14, 17:05 UTC4h 5m
2026-07-13 N923LH - Jul 13, 13:05 UTCJul 13, 18:00 UTC4h 55m
2026-07-10 N923LH - Jul 10, 14:45 UTCJul 10, 16:50 UTC2h 5m
2026-07-10 N923LH - Jul 10, 13:00 UTCJul 10, 14:35 UTC1h 35m
2026-07-09 N923LH - Jul 9, 12:55 UTCJul 9, 17:15 UTC4h 20m
2026-07-08 N923LH - Jul 8, 19:10 UTCJul 8, 22:10 UTC3h 0m
2026-07-08 N923LH - Jul 8, 13:10 UTCJul 8, 19:00 UTC5h 50m
2026-07-07 N923LH - Jul 7, 12:50 UTCJul 7, 15:35 UTC2h 45m
2026-07-06 N923LH - Jul 6, 12:50 UTCJul 6, 17:05 UTC4h 15m
2026-07-03 N923LH - Jul 3, 13:00 UTCJul 3, 16:55 UTC3h 55m
2026-07-02 N923LH - Jul 2, 12:55 UTCJul 2, 17:25 UTC4h 30m
2026-07-01 N923LH - Jul 1, 21:05 UTCJul 1, 22:15 UTC1h 10m
2026-07-01 N923LH - Jul 1, 19:20 UTCJul 1, 21:00 UTC1h 40m
2026-07-01 N923LH - Jul 1, 16:45 UTCJul 1, 19:15 UTC2h 30m
2026-07-01 N923LH - Jul 1, 15:10 UTCJul 1, 16:35 UTC1h 25m
2026-07-01 N923LH - Jul 1, 13:00 UTCJul 1, 15:00 UTC2h 0m
2026-06-30 N923LH - Jun 30, 14:45 UTCJun 30, 15:40 UTC55m
2026-06-30 N923LH - Jun 30, 12:45 UTCJun 30, 14:25 UTC1h 40m
2026-06-29 N923LH - Jun 29, 15:24 UTCJun 29, 17:05 UTC1h 40m
2026-06-29 N923LH - Jun 29, 12:49 UTCJun 29, 15:04 UTC2h 15m
2026-06-26 N923LH - Jun 26, 12:50 UTCJun 26, 16:14 UTC3h 25m
2026-06-25 N923LH - Jun 25, 17:25 UTCJun 25, 18:19 UTC55m
2026-06-25 N923LH - Jun 25, 12:50 UTCJun 25, 16:50 UTC4h 0m
2026-06-24 N923LH - Jun 24, 20:44 UTCJun 24, 21:09 UTC25m
2026-06-24 N923LH - Jun 24, 14:50 UTCJun 24, 20:35 UTC5h 45m
2026-06-24 N923LH - Jun 24, 12:50 UTCJun 24, 14:39 UTC1h 50m
2026-06-23 N923LH - Jun 23, 12:45 UTCJun 23, 15:34 UTC2h 50m
2026-06-22 N923LH - Jun 22, 12:54 UTCJun 22, 16:54 UTC4h 0m
2026-06-18 N923LH - Jun 18, 12:45 UTCJun 18, 14:25 UTC1h 40m
2026-06-16 N923LH - Jun 16, 12:50 UTCJun 16, 16:10 UTC3h 20m
2026-06-15 N923LH - Jun 15, 13:10 UTCJun 15, 16:59 UTC3h 50m
2026-06-10 N923LH - Jun 10, 12:45 UTCJun 10, 13:25 UTC40m
2026-06-09 N923LH - Jun 9, 16:55 UTCJun 9, 18:20 UTC1h 25m
2026-06-08 N923LH - Jun 8, 19:45 UTCJun 8, 20:05 UTC20m

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 N923LH page for operator, model, and routing details .

Mode-S ACCA51 frequently asked

What is Mode-S code ACCA51?
ACCA51 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N923LH.
Where is Mode-S ACCA51 registered?
Mode-S code ACCA51 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 ACCA51 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 16:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACCA51, octal 53145121, decimal 11,323,985.
What flights does ACCA51 operate?
Mode-S ACCA51 has broadcast 1 distinct callsign, including N923LH.