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sensors Mode-S transponder

ACB989

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N919QS · CESSNA 680 Citation Latitude · operated by TUPELO TRAVEL LLC, BOSCACCI GROUP LLC, BOWLIN JOHN D, JOHNSON KRISTIN M, SOBOTKA KYLE, MILL CREEK CIRCLE AIR LLC

Hex
ACB989
Octal
53134611
Decimal
11,319,689
Country
US
Tail
N919QS
Type
C68A
Transponder active on ground
Flights observed
253
Distinct callsigns
2
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S ACB989.

Country allocation

The ICAO 24-bit address ACB989 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
EJA919 - 237 2026-07-14
N919QS - 16 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 EJA919 - Jul 14, 01:40 UTCJul 14, 02:15 UTC35m
2026-07-14 EJA919 - Jul 14, 00:00 UTCJul 14, 01:35 UTC1h 35m
2026-07-13 EJA919 - Jul 13, 20:00 UTCJul 13, 20:15 UTC15m
2026-07-13 EJA919 - Jul 13, 16:45 UTCJul 13, 19:10 UTC2h 25m
2026-07-13 EJA919 - Jul 13, 15:20 UTCJul 13, 15:55 UTC35m
2026-07-13 EJA919 - Jul 13, 12:00 UTCJul 13, 14:15 UTC2h 15m
2026-07-12 EJA919 - Jul 12, 19:45 UTCJul 12, 22:20 UTC2h 35m
2026-07-12 EJA919 - Jul 12, 16:15 UTCJul 12, 18:35 UTC2h 20m
2026-07-12 EJA919 - Jul 12, 14:20 UTCJul 12, 15:25 UTC1h 5m
2026-07-11 EJA919 - Jul 11, 22:10 UTCJul 11, 22:45 UTC35m
2026-07-11 EJA919 - Jul 11, 18:55 UTCJul 11, 21:05 UTC2h 10m
2026-07-11 EJA919 - Jul 11, 16:15 UTCJul 11, 16:50 UTC35m
2026-07-11 EJA919 - Jul 11, 15:10 UTCJul 11, 15:40 UTC30m
2026-07-11 EJA919 - Jul 11, 13:10 UTCJul 11, 13:25 UTC15m
2026-07-10 EJA919 - Jul 10, 22:25 UTCJul 10, 23:15 UTC50m
2026-07-10 EJA919 - Jul 10, 16:45 UTCJul 10, 18:10 UTC1h 25m
2026-07-10 EJA919 - Jul 10, 13:10 UTCJul 10, 14:40 UTC1h 30m
2026-07-10 EJA919 - Jul 10, 11:15 UTCJul 10, 11:50 UTC35m
2026-07-09 EJA919 - Jul 9, 16:25 UTCJul 9, 17:20 UTC55m
2026-07-09 EJA919 TEB → BKL Jul 9, 13:50 UTCJul 9, 15:00 UTC1h 10m
2026-07-08 EJA919 - Jul 8, 20:15 UTCJul 8, 20:40 UTC25m
2026-07-08 EJA919 - Jul 8, 16:45 UTCJul 8, 19:15 UTC2h 30m
2026-07-08 EJA919 - Jul 8, 13:35 UTCJul 8, 14:40 UTC1h 5m
2026-07-08 EJA919 - Jul 8, 11:10 UTCJul 8, 12:45 UTC1h 35m
2026-07-07 EJA919 - Jul 7, 20:05 UTCJul 7, 21:05 UTC1h 0m
2026-07-07 EJA919 - Jul 7, 17:20 UTCJul 7, 18:10 UTC50m
2026-07-07 EJA919 - Jul 7, 12:40 UTCJul 7, 14:35 UTC1h 55m
2026-07-07 EJA919 ABE → MMU Jul 7, 10:30 UTCJul 7, 10:55 UTC25m
2026-07-06 EJA919 - Jul 6, 18:50 UTCJul 6, 20:35 UTC1h 45m
2026-07-06 EJA919 - Jul 6, 16:45 UTCJul 6, 18:10 UTC1h 25m
2026-07-06 EJA919 - Jul 6, 12:55 UTCJul 6, 15:55 UTC3h 0m
2026-07-06 EJA919 - Jul 6, 10:05 UTCJul 6, 12:00 UTC1h 55m
2026-07-05 EJA919 - Jul 5, 23:15 UTCJul 6, 01:00 UTC1h 45m
2026-07-05 EJA919 - Jul 5, 19:55 UTCJul 5, 21:20 UTC1h 25m
2026-07-05 EJA919 - Jul 5, 18:00 UTCJul 5, 18:30 UTC30m
2026-07-05 EJA919 - Jul 5, 16:20 UTCJul 5, 17:05 UTC45m
2026-07-05 N919QS - Jul 5, 15:15 UTCJul 5, 15:40 UTC25m
2026-07-05 N919QS - Jul 5, 11:10 UTCJul 5, 13:15 UTC2h 5m
2026-07-03 EJA919 - Jul 3, 21:55 UTCJul 3, 22:45 UTC50m
2026-07-03 EJA919 - Jul 3, 16:25 UTCJul 3, 17:00 UTC35m
2026-07-03 EJA919 - Jul 3, 13:45 UTCJul 3, 14:15 UTC30m
2026-07-02 EJA919 - Jul 2, 20:15 UTCJul 2, 21:00 UTC45m
2026-07-02 EJA919 - Jul 2, 18:20 UTCJul 2, 19:35 UTC1h 15m
2026-07-02 EJA919 - Jul 2, 16:30 UTCJul 2, 17:25 UTC55m
2026-07-02 EJA919 - Jul 2, 14:45 UTCJul 2, 15:40 UTC55m
2026-07-02 EJA919 - Jul 2, 12:50 UTCJul 2, 13:55 UTC1h 5m
2026-07-01 EJA919 - Jul 1, 20:15 UTCJul 1, 20:30 UTC15m
2026-07-01 EJA919 - Jul 1, 18:35 UTCJul 1, 19:30 UTC55m
2026-07-01 EJA919 - Jul 1, 15:40 UTCJul 1, 16:05 UTC25m
2026-06-29 EJA919 - Jun 29, 19:00 UTCJun 29, 20:40 UTC1h 40m

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 N919QS page for operator, model, and routing details .

Mode-S ACB989 frequently asked

What is Mode-S code ACB989?
ACB989 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N919QS.
Where is Mode-S ACB989 registered?
Mode-S code ACB989 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 ACB989 broadcasting right now?
Mode-S ACB989 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACB989, octal 53134611, decimal 11,319,689.
What flights does ACB989 operate?
Mode-S ACB989 has broadcast 2 distinct callsigns, including EJA919, N919QS.