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sensors Mode-S transponder

A99A63

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N718GH · AEROSPATIALE AS-350 Ecureuil · operated by ROTORCRAFT SUPPORT INC

Hex
A99A63
Octal
52315143
Decimal
11,115,107
Country
US
Tail
N718GH
Type
AS50
No current signal · last broadcast 8h ago
Flights observed
103
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A99A63.

Country allocation

The ICAO 24-bit address A99A63 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
N718GH - 103 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N718GH - Jul 18, 01:00 UTCJul 18, 01:54 UTC55m
2026-07-17 N718GH CCR → SCK Jul 17, 21:20 UTCJul 17, 23:35 UTC2h 15m
2026-07-17 N718GH - Jul 17, 18:00 UTCJul 17, 19:35 UTC1h 35m
2026-07-16 N718GH - Jul 16, 23:35 UTCJul 17, 00:25 UTC50m
2026-07-16 N718GH - Jul 16, 22:25 UTCJul 16, 22:45 UTC20m
2026-07-16 N718GH - Jul 16, 19:14 UTCJul 16, 20:25 UTC1h 10m
2026-07-15 N718GH - Jul 15, 19:40 UTCJul 15, 20:20 UTC40m
2026-07-15 N718GH - Jul 15, 18:15 UTCJul 15, 19:35 UTC1h 20m
2026-07-14 N718GH - Jul 14, 22:15 UTCJul 14, 22:45 UTC29m
2026-07-14 N718GH - Jul 14, 16:15 UTCJul 14, 16:55 UTC40m
2026-07-13 N718GH - Jul 13, 22:20 UTCJul 13, 22:30 UTC10m
2026-07-13 N718GH - Jul 13, 19:25 UTCJul 13, 20:35 UTC1h 10m
2026-07-09 N718GH - Jul 9, 17:45 UTCJul 9, 18:20 UTC35m
2026-07-09 N718GH - Jul 9, 01:10 UTCJul 9, 02:35 UTC1h 25m
2026-07-08 N718GH - Jul 8, 20:55 UTCJul 8, 22:05 UTC1h 10m
2026-07-08 N718GH - Jul 8, 18:05 UTCJul 8, 19:35 UTC1h 30m
2026-07-08 N718GH BFL → BFL Jul 8, 01:00 UTCJul 8, 02:50 UTC1h 50m
2026-07-07 N718GH - Jul 7, 20:45 UTCJul 7, 20:55 UTC10m
2026-07-07 N718GH - Jul 7, 18:25 UTCJul 7, 19:40 UTC1h 15m
2026-07-06 N718GH - Jul 6, 23:05 UTCJul 7, 00:05 UTC1h 0m
2026-06-16 N718GH - Jun 16, 17:59 UTCJun 16, 18:45 UTC45m
2026-06-16 N718GH SMX → SBP Jun 16, 00:40 UTCJun 16, 00:55 UTC15m
2026-06-16 N718GH - Jun 16, 00:10 UTCJun 16, 00:35 UTC25m
2026-06-15 N718GH - Jun 15, 23:45 UTCJun 16, 00:00 UTC15m
2026-06-15 N718GH - Jun 15, 22:30 UTCJun 15, 23:09 UTC40m
2026-06-15 N718GH - Jun 15, 22:15 UTCJun 15, 22:20 UTC5m
2026-06-15 N718GH - Jun 15, 21:40 UTCJun 15, 22:00 UTC20m
2026-06-15 N718GH - Jun 15, 21:25 UTCJun 15, 21:30 UTC5m
2026-06-15 N718GH - Jun 15, 21:09 UTCJun 15, 21:20 UTC10m
2026-06-15 N718GH - Jun 15, 20:54 UTCJun 15, 21:04 UTC10m
2026-06-15 N718GH - Jun 15, 19:20 UTCJun 15, 20:15 UTC55m
2026-06-15 N718GH - Jun 15, 18:25 UTCJun 15, 18:45 UTC20m
2026-06-15 N718GH - Jun 15, 00:49 UTCJun 15, 01:40 UTC50m
2026-06-14 N718GH - Jun 14, 23:44 UTCJun 14, 23:59 UTC15m
2026-06-14 N718GH - Jun 14, 18:20 UTCJun 14, 19:15 UTC55m
2026-06-14 N718GH - Jun 14, 01:05 UTCJun 14, 02:05 UTC1h 0m
2026-06-13 N718GH - Jun 13, 22:40 UTCJun 13, 23:10 UTC30m
2026-06-13 N718GH - Jun 13, 18:05 UTCJun 13, 19:20 UTC1h 15m
2026-06-13 N718GH - Jun 13, 01:55 UTCJun 13, 02:10 UTC15m
2026-06-13 N718GH - Jun 13, 01:00 UTCJun 13, 01:50 UTC50m
2026-06-12 N718GH - Jun 12, 23:50 UTCJun 13, 00:30 UTC40m
2026-06-12 N718GH - Jun 12, 18:01 UTCJun 12, 19:55 UTC1h 55m
2026-06-12 N718GH - Jun 12, 01:05 UTCJun 12, 02:35 UTC1h 30m
2026-06-11 N718GH - Jun 11, 22:35 UTCJun 12, 00:00 UTC1h 25m
2026-06-11 N718GH - Jun 11, 18:10 UTCJun 11, 19:30 UTC1h 20m
2026-06-11 N718GH - Jun 11, 00:15 UTCJun 11, 02:15 UTC2h 0m
2026-06-10 N718GH - Jun 10, 21:30 UTCJun 10, 23:00 UTC1h 30m
2026-06-10 N718GH - Jun 10, 17:50 UTCJun 10, 19:40 UTC1h 50m
2026-06-10 N718GH - Jun 10, 01:20 UTCJun 10, 03:15 UTC1h 55m
2026-06-09 N718GH - Jun 9, 23:10 UTCJun 10, 00:30 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 N718GH page for operator, model, and routing details .

Mode-S A99A63 frequently asked

What is Mode-S code A99A63?
A99A63 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N718GH.
Where is Mode-S A99A63 registered?
Mode-S code A99A63 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 A99A63 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A99A63, octal 52315143, decimal 11,115,107.
What flights does A99A63 operate?
Mode-S A99A63 has broadcast 1 distinct callsign, including N718GH.