Apparatus

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sensors Mode-S transponder

A689F0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N520LH · CESSNA 172 Skyhawk · operated by H2 LINK CO

Hex
A689F0
Octal
51504760
Decimal
10,914,288
Country
US
Tail
N520LH
Type
C172
No current signal · last broadcast 5d ago
Flights observed
151
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S A689F0.

Country allocation

The ICAO 24-bit address A689F0 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
N520LH - 151 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 N520LH - May 28, 21:15 UTCMay 28, 22:00 UTC45m
2026-05-28 N520LH CNO → CNO May 28, 16:30 UTCMay 28, 17:55 UTC1h 25m
2026-05-28 N520LH - May 28, 04:35 UTCMay 28, 05:15 UTC40m
2026-05-27 N520LH CNO → CNO May 27, 21:40 UTCMay 27, 22:30 UTC50m
2026-05-27 N520LH - May 27, 19:55 UTCMay 27, 20:55 UTC1h 0m
2026-05-26 N520LH CNO → CNO May 26, 21:09 UTCMay 26, 22:44 UTC1h 35m
2026-05-26 N520LH CNO → CNO May 26, 16:35 UTCMay 26, 17:30 UTC55m
2026-05-26 N520LH - May 26, 05:20 UTCMay 26, 06:29 UTC1h 10m
2026-05-26 N520LH - May 26, 04:00 UTCMay 26, 05:15 UTC1h 15m
2026-05-25 N520LH CNO → CNO May 25, 22:40 UTCMay 26, 00:29 UTC1h 50m
2026-05-24 N520LH - May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 N520LH - May 24, 21:10 UTCMay 24, 21:45 UTC35m
2026-05-24 N520LH CNO → CNO May 24, 15:45 UTCMay 24, 16:30 UTC45m
2026-05-23 N520LH CNO → CNO May 23, 21:40 UTCMay 23, 23:30 UTC1h 50m
2026-05-23 N520LH - May 23, 03:20 UTCMay 23, 06:15 UTC2h 55m
2026-05-23 N520LH CNO → CNO May 23, 00:00 UTCMay 23, 02:30 UTC2h 29m
2026-05-22 N520LH CNO → CNO May 22, 23:15 UTCMay 22, 23:25 UTC10m
2026-05-22 N520LH - May 22, 21:30 UTCMay 22, 22:30 UTC1h 0m
2026-05-22 N520LH - May 22, 19:55 UTCMay 22, 20:40 UTC45m
2026-05-22 N520LH - May 22, 17:15 UTCMay 22, 18:50 UTC1h 35m
2026-05-21 N520LH CNO → CNO May 21, 21:35 UTCMay 21, 22:50 UTC1h 15m
2026-05-21 N520LH CNO → CNO May 21, 19:20 UTCMay 21, 20:15 UTC55m
2026-05-21 N520LH CNO → CNO May 21, 16:50 UTCMay 21, 18:00 UTC1h 10m
2026-05-19 N520LH - May 19, 20:50 UTCMay 19, 22:35 UTC1h 45m
2026-05-19 N520LH - May 19, 18:30 UTCMay 19, 19:30 UTC1h 0m
2026-05-19 N520LH CNO → CNO May 19, 16:45 UTCMay 19, 16:55 UTC10m
2026-05-18 N520LH - May 18, 21:15 UTCMay 18, 21:55 UTC40m
2026-05-18 N520LH CNO → CNO May 18, 18:20 UTCMay 18, 19:40 UTC1h 19m
2026-05-18 N520LH CNO → CNO May 18, 16:50 UTCMay 18, 17:25 UTC35m
2026-05-17 N520LH - May 17, 21:10 UTCMay 17, 22:15 UTC1h 5m
2026-05-17 N520LH - May 17, 00:05 UTCMay 17, 01:05 UTC1h 0m
2026-05-16 N520LH CNO → CNO May 16, 20:40 UTCMay 16, 23:20 UTC2h 40m
2026-05-16 N520LH - May 16, 18:00 UTCMay 16, 19:40 UTC1h 40m
2026-05-15 N520LH CNO → CNO May 15, 22:30 UTCMay 15, 23:25 UTC55m
2026-05-15 N520LH - May 15, 20:35 UTCMay 15, 21:50 UTC1h 15m
2026-05-15 N520LH CNO → CNO May 15, 17:10 UTCMay 15, 19:35 UTC2h 25m
2026-05-15 N520LH - May 15, 01:55 UTCMay 15, 02:35 UTC40m
2026-05-14 N520LH - May 14, 22:55 UTCMay 14, 23:40 UTC45m
2026-05-13 N520LH CNO → CNO May 13, 18:35 UTCMay 13, 19:40 UTC1h 5m
2026-05-13 N520LH - May 13, 01:45 UTCMay 13, 04:45 UTC3h 0m
2026-05-13 N520LH - May 13, 00:40 UTCMay 13, 01:10 UTC30m
2026-05-12 N520LH - May 12, 22:40 UTCMay 13, 00:05 UTC1h 25m
2026-05-12 N520LH CNO → CNO May 12, 04:00 UTCMay 12, 05:15 UTC1h 15m
2026-05-11 N520LH CNO → CNO May 11, 20:50 UTCMay 11, 21:50 UTC1h 0m
2026-05-10 N520LH CNO → CNO May 10, 23:29 UTCMay 11, 01:00 UTC1h 30m
2026-05-10 N520LH CNO → CNO May 10, 21:04 UTCMay 10, 22:55 UTC1h 50m
2026-05-10 N520LH CNO → CNO May 10, 19:40 UTCMay 10, 20:05 UTC25m
2026-05-10 N520LH CNO → CNO May 10, 18:39 UTCMay 10, 19:00 UTC20m
2026-05-10 N520LH - May 10, 03:30 UTCMay 10, 04:50 UTC1h 20m
2026-05-09 N520LH - May 9, 23:15 UTCMay 10, 00:34 UTC1h 20m

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 N520LH page for operator, model, and routing details .

Mode-S A689F0 frequently asked

What is Mode-S code A689F0?
A689F0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N520LH.
Where is Mode-S A689F0 registered?
Mode-S code A689F0 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 A689F0 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A689F0, octal 51504760, decimal 10,914,288.
What flights does A689F0 operate?
Mode-S A689F0 has broadcast 1 distinct callsign, including N520LH.