Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A18A8A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N199KQ · DAHER Kodiak 100 · operated by BRIDGER AVIATION SERVICES LLC

Hex
A18A8A
Octal
50305212
Decimal
10,586,762
Country
US
Tail
N199KQ
Type
K100
No current signal · last broadcast 12h ago
Flights observed
34
Distinct callsigns
2
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A18A8A.

Country allocation

The ICAO 24-bit address A18A8A 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 2 distinct

Callsign Airline Flights Last seen
AA652 American Airlines 20 2026-07-24
BGR17 - 14 2026-07-10

Recent flights last 34

DateFlightRouteTakeoffLandingDuration
2026-07-24 AA652 DFW → LGA Jul 24, 23:45 UTCJul 25, 00:05 UTC20m
2026-07-24 AA652 DFW → LGA Jul 24, 20:25 UTCJul 24, 20:45 UTC20m
2026-07-22 AA652 DFW → LGA Jul 22, 23:15 UTCJul 22, 23:40 UTC25m
2026-07-22 AA652 DFW → LGA Jul 22, 21:00 UTCJul 22, 21:25 UTC25m
2026-07-22 AA652 DFW → LGA Jul 22, 17:40 UTCJul 22, 18:30 UTC50m
2026-07-22 AA652 DFW → LGA Jul 22, 01:00 UTCJul 22, 01:55 UTC55m
2026-07-21 AA652 DFW → LGA Jul 21, 18:50 UTCJul 21, 22:30 UTC3h 40m
2026-07-20 AA652 DFW → LGA Jul 20, 00:30 UTCJul 20, 03:25 UTC2h 55m
2026-07-18 AA652 DFW → LGA Jul 18, 23:05 UTCJul 19, 02:30 UTC3h 25m
2026-07-18 AA652 DFW → LGA Jul 18, 17:00 UTCJul 18, 20:40 UTC3h 40m
2026-07-17 AA652 DFW → LGA Jul 17, 20:00 UTCJul 18, 00:04 UTC4h 5m
2026-07-17 AA652 - Jul 17, 02:30 UTCJul 17, 02:45 UTC15m
2026-07-16 AA652 - Jul 16, 19:45 UTCJul 16, 20:00 UTC15m
2026-07-13 AA652 - Jul 13, 23:30 UTCJul 14, 00:10 UTC40m
2026-07-13 AA652 - Jul 13, 01:45 UTCJul 13, 01:55 UTC10m
2026-07-12 AA652 - Jul 12, 03:10 UTCJul 12, 03:20 UTC10m
2026-07-11 AA652 - Jul 11, 16:25 UTCJul 11, 16:35 UTC10m
2026-07-10 AA652 - Jul 10, 19:50 UTCJul 10, 20:05 UTC15m
2026-07-10 AA652 - Jul 10, 17:40 UTCJul 10, 17:55 UTC15m
2026-07-10 AA652 - Jul 10, 04:50 UTCJul 10, 05:05 UTC15m
2026-07-10 BGR17 - Jul 10, 01:15 UTCJul 10, 01:35 UTC20m
2026-06-21 BGR17 - Jun 21, 22:29 UTCJun 22, 01:44 UTC3h 15m
2026-06-16 BGR17 - Jun 16, 19:55 UTCJun 16, 23:45 UTC3h 50m
2026-06-16 BGR17 - Jun 16, 00:45 UTCJun 16, 01:25 UTC40m
2026-06-15 BGR17 - Jun 15, 19:50 UTCJun 15, 20:30 UTC40m
2026-06-15 BGR17 - Jun 15, 01:15 UTCJun 15, 02:10 UTC55m
2026-06-14 BGR17 - Jun 14, 19:45 UTCJun 14, 20:20 UTC35m
2026-06-12 BGR17 - Jun 12, 20:25 UTCJun 12, 20:40 UTC15m
2026-06-12 BGR17 - Jun 12, 19:15 UTCJun 12, 19:25 UTC10m
2026-06-06 BGR17 - Jun 6, 20:30 UTCJun 6, 21:04 UTC35m
2026-05-22 BGR17 - May 22, 20:40 UTCMay 22, 21:15 UTC35m
2026-05-22 BGR17 SBP → MCC May 22, 18:00 UTCMay 22, 19:30 UTC1h 30m
2026-05-21 BGR17 - May 21, 23:55 UTCMay 22, 00:10 UTC15m
2026-05-21 BGR17 - May 21, 22:05 UTCMay 21, 23:05 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 N199KQ page for operator, model, and routing details .

Mode-S A18A8A frequently asked

What is Mode-S code A18A8A?
A18A8A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N199KQ.
Where is Mode-S A18A8A registered?
Mode-S code A18A8A 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 A18A8A broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A18A8A, octal 50305212, decimal 10,586,762.
What flights does A18A8A operate?
Mode-S A18A8A has broadcast 2 distinct callsigns, including AA652, BGR17.