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 14h ago
Flights observed
207
Distinct callsigns
1
Country
US
Last broadcast
14h 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 - 207 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N520LH - Jul 17, 21:30 UTCJul 17, 22:10 UTC40m
2026-07-17 N520LH CNO → CNO Jul 17, 19:45 UTCJul 17, 20:20 UTC35m
2026-07-16 N520LH CNO → CNO Jul 16, 22:49 UTCJul 16, 23:29 UTC40m
2026-07-15 N520LH - Jul 15, 22:45 UTCJul 16, 02:25 UTC3h 40m
2026-07-15 N520LH CNO → CNO Jul 15, 20:45 UTCJul 15, 21:45 UTC1h 0m
2026-07-15 N520LH - Jul 15, 17:25 UTCJul 15, 18:35 UTC1h 10m
2026-07-15 N520LH - Jul 15, 00:55 UTCJul 15, 03:55 UTC3h 0m
2026-07-14 N520LH - Jul 14, 19:50 UTCJul 14, 21:40 UTC1h 50m
2026-07-14 N520LH BNG → CNO Jul 14, 17:30 UTCJul 14, 18:55 UTC1h 25m
2026-07-14 N520LH - Jul 14, 16:10 UTCJul 14, 16:50 UTC40m
2026-07-14 N520LH - Jul 14, 14:05 UTCJul 14, 15:40 UTC1h 35m
2026-07-14 N520LH - Jul 14, 13:00 UTCJul 14, 13:35 UTC35m
2026-07-13 N520LH - Jul 13, 20:40 UTCJul 13, 21:50 UTC1h 10m
2026-07-13 N520LH CNO → CNO Jul 13, 18:30 UTCJul 13, 19:15 UTC45m
2026-06-28 N520LH CNO → CNO Jun 28, 23:50 UTCJun 29, 00:54 UTC1h 5m
2026-06-28 N520LH - Jun 28, 20:09 UTCJun 28, 21:55 UTC1h 45m
2026-06-28 N520LH - Jun 28, 01:50 UTCJun 28, 03:05 UTC1h 15m
2026-06-27 N520LH - Jun 27, 20:29 UTCJun 27, 21:04 UTC35m
2026-06-27 N520LH CNO → BNG Jun 27, 19:05 UTCJun 27, 19:34 UTC30m
2026-06-27 N520LH - Jun 27, 03:44 UTCJun 27, 05:19 UTC1h 35m
2026-06-26 N520LH - Jun 26, 22:05 UTCJun 26, 23:34 UTC1h 30m
2026-06-26 N520LH CNO → CNO Jun 26, 17:35 UTCJun 26, 18:44 UTC1h 10m
2026-06-26 N520LH CNO → CNO Jun 26, 00:35 UTCJun 26, 02:05 UTC1h 30m
2026-06-24 N520LH - Jun 24, 22:39 UTCJun 24, 23:24 UTC45m
2026-06-24 N520LH - Jun 24, 19:39 UTCJun 24, 20:20 UTC40m
2026-06-23 N520LH - Jun 23, 21:45 UTCJun 23, 22:55 UTC1h 10m
2026-06-23 N520LH - Jun 23, 19:29 UTCJun 23, 20:59 UTC1h 30m
2026-06-23 N520LH CNO → CNO Jun 23, 03:49 UTCJun 23, 05:00 UTC1h 10m
2026-06-22 N520LH CNO → CNO Jun 22, 23:45 UTCJun 23, 01:04 UTC1h 20m
2026-06-22 N520LH CNO → CNO Jun 22, 22:24 UTCJun 22, 23:10 UTC45m
2026-06-22 N520LH - Jun 22, 18:44 UTCJun 22, 19:54 UTC1h 10m
2026-06-21 N520LH - Jun 21, 22:20 UTCJun 21, 23:44 UTC1h 25m
2026-06-21 N520LH - Jun 21, 20:45 UTCJun 21, 21:34 UTC50m
2026-06-21 N520LH - Jun 21, 19:05 UTCJun 21, 19:50 UTC45m
2026-06-20 N520LH - Jun 20, 18:59 UTCJun 20, 21:00 UTC2h 0m
2026-06-20 N520LH - Jun 20, 14:39 UTCJun 20, 15:39 UTC1h 0m
2026-06-19 N520LH - Jun 19, 23:29 UTCJun 20, 00:34 UTC1h 5m
2026-06-19 N520LH CNO → CNO Jun 19, 21:49 UTCJun 19, 22:09 UTC20m
2026-06-18 N520LH - Jun 18, 23:35 UTCJun 19, 00:40 UTC1h 4m
2026-06-18 N520LH CNO → CNO Jun 18, 22:15 UTCJun 18, 22:40 UTC25m
2026-06-18 N520LH CNO → CNO Jun 18, 19:45 UTCJun 18, 20:35 UTC50m
2026-06-17 N520LH - Jun 17, 23:20 UTCJun 18, 00:40 UTC1h 20m
2026-06-17 N520LH - Jun 17, 19:45 UTCJun 17, 20:50 UTC1h 5m
2026-06-16 N520LH CNO → CNO Jun 16, 21:50 UTCJun 16, 22:20 UTC30m
2026-06-15 N520LH - Jun 15, 21:30 UTCJun 15, 22:25 UTC55m
2026-06-15 N520LH CNO → CNO Jun 15, 19:05 UTCJun 15, 20:45 UTC1h 40m
2026-06-15 N520LH - Jun 15, 16:49 UTCJun 15, 18:29 UTC1h 40m
2026-06-14 N520LH - Jun 14, 23:25 UTCJun 15, 01:04 UTC1h 40m
2026-06-14 N520LH CNO → CNO Jun 14, 20:35 UTCJun 14, 22:05 UTC1h 30m
2026-06-14 N520LH - Jun 14, 18:05 UTCJun 14, 19:05 UTC1h 0m

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 14h 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.