Apparatus

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sensors Mode-S transponder

A6803F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N518ME · CESSNA 525A Citation CJ2 · operated by 717 AVIATION HOLDINGS LLC

Hex
A6803F
Octal
51500077
Decimal
10,911,807
Country
US
Tail
N518ME
Type
C25A
No current signal · last broadcast 16h ago
Flights observed
188
Distinct callsigns
1
Country
US
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S A6803F.

Country allocation

The ICAO 24-bit address A6803F 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
N518ME - 188 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N518ME - Jul 13, 17:40 UTCJul 13, 18:25 UTC45m
2026-07-13 N518ME - Jul 13, 15:10 UTCJul 13, 16:30 UTC1h 20m
2026-07-13 N518ME HAR → CAK Jul 13, 13:20 UTCJul 13, 14:10 UTC50m
2026-07-10 N518ME - Jul 10, 19:30 UTCJul 10, 20:20 UTC50m
2026-07-10 N518ME - Jul 10, 18:10 UTCJul 10, 19:00 UTC50m
2026-07-10 N518ME - Jul 10, 11:40 UTCJul 10, 12:40 UTC1h 0m
2026-07-10 N518ME - Jul 10, 09:40 UTCJul 10, 10:30 UTC50m
2026-07-10 N518ME - Jul 10, 00:50 UTCJul 10, 01:40 UTC50m
2026-07-09 N518ME - Jul 9, 23:35 UTCJul 9, 23:55 UTC20m
2026-07-09 N518ME - Jul 9, 21:40 UTCJul 9, 22:40 UTC1h 0m
2026-07-07 N518ME - Jul 7, 14:10 UTCJul 7, 14:40 UTC30m
2026-07-07 N518ME IAD → AGC Jul 7, 12:10 UTCJul 7, 12:45 UTC35m
2026-07-07 N518ME - Jul 7, 10:00 UTCJul 7, 10:25 UTC25m
2026-07-07 N518ME - Jul 7, 08:15 UTCJul 7, 08:55 UTC40m
2026-07-06 N518ME - Jul 6, 22:50 UTCJul 6, 23:05 UTC15m
2026-07-06 N518ME - Jul 6, 21:00 UTCJul 6, 21:35 UTC35m
2026-07-06 N518ME - Jul 6, 15:15 UTCJul 6, 16:25 UTC1h 10m
2026-07-05 N518ME - Jul 5, 15:20 UTCJul 5, 15:40 UTC20m
2026-07-05 N518ME - Jul 5, 13:45 UTCJul 5, 14:15 UTC30m
2026-07-05 N518ME - Jul 5, 11:00 UTCJul 5, 12:35 UTC1h 35m
2026-07-03 N518ME - Jul 3, 23:40 UTCJul 4, 00:45 UTC1h 5m
2026-07-03 N518ME - Jul 3, 21:05 UTCJul 3, 22:10 UTC1h 5m
2026-07-03 N518ME - Jul 3, 17:50 UTCJul 3, 18:30 UTC40m
2026-07-03 N518ME - Jul 3, 15:35 UTCJul 3, 16:50 UTC1h 15m
2026-07-03 N518ME - Jul 3, 13:45 UTCJul 3, 14:50 UTC1h 5m
2026-07-02 N518ME - Jul 2, 18:05 UTCJul 2, 18:25 UTC20m
2026-07-02 N518ME - Jul 2, 15:55 UTCJul 2, 16:50 UTC55m
2026-07-02 N518ME - Jul 2, 11:30 UTCJul 2, 12:30 UTC1h 0m
2026-07-01 N518ME - Jul 1, 23:30 UTCJul 1, 23:50 UTC20m
2026-07-01 N518ME - Jul 1, 21:55 UTCJul 1, 22:40 UTC45m
2026-07-01 N518ME - Jul 1, 19:55 UTCJul 1, 20:30 UTC35m
2026-07-01 N518ME - Jul 1, 14:05 UTCJul 1, 15:05 UTC1h 0m
2026-06-30 N518ME - Jun 30, 17:15 UTCJun 30, 18:25 UTC1h 10m
2026-06-30 N518ME - Jun 30, 12:20 UTCJun 30, 13:05 UTC45m
2026-06-30 N518ME - Jun 30, 11:00 UTCJun 30, 11:30 UTC30m
2026-06-30 N518ME - Jun 30, 09:20 UTCJun 30, 09:45 UTC25m
2026-06-29 N518ME - Jun 29, 19:05 UTCJun 29, 20:35 UTC1h 30m
2026-06-29 N518ME - Jun 29, 17:05 UTCJun 29, 18:19 UTC1h 15m
2026-06-29 N518ME - Jun 29, 03:14 UTCJun 29, 04:20 UTC1h 5m
2026-06-29 N518ME - Jun 29, 00:14 UTCJun 29, 02:20 UTC2h 5m
2026-06-28 N518ME - Jun 28, 19:14 UTCJun 28, 20:54 UTC1h 40m
2026-06-27 N518ME - Jun 27, 21:55 UTCJun 28, 00:09 UTC2h 15m
2026-06-27 N518ME - Jun 27, 18:24 UTCJun 27, 19:24 UTC1h 0m
2026-06-27 N518ME - Jun 27, 16:10 UTCJun 27, 17:09 UTC1h 0m
2026-06-26 N518ME HVN → LEB Jun 26, 20:10 UTCJun 26, 20:50 UTC40m
2026-06-25 N518ME - Jun 25, 20:09 UTCJun 25, 20:45 UTC35m
2026-06-25 N518ME - Jun 25, 18:19 UTCJun 25, 19:05 UTC45m
2026-06-25 N518ME - Jun 25, 11:04 UTCJun 25, 12:04 UTC1h 0m
2026-06-25 N518ME - Jun 25, 09:10 UTCJun 25, 09:45 UTC35m
2026-06-23 N518ME - Jun 23, 21:34 UTCJun 23, 22:05 UTC30m

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 N518ME page for operator, model, and routing details .

Mode-S A6803F frequently asked

What is Mode-S code A6803F?
A6803F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N518ME.
Where is Mode-S A6803F registered?
Mode-S code A6803F 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 A6803F broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6803F, octal 51500077, decimal 10,911,807.
What flights does A6803F operate?
Mode-S A6803F has broadcast 1 distinct callsign, including N518ME.