Apparatus

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sensors Mode-S transponder

AB53B9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N829QS · CESSNA 700 Citation Longitude · operated by NETJETS SALES INC, B14T LLC, ELEMENT SOLUTIONS INC, ELTRICH MARTIN III, MCCALLISTER MICHAEL, PARSONS ROBERT R

Hex
AB53B9
Octal
52651671
Decimal
11,228,089
Country
US
Tail
N829QS
Type
C700
No current signal · last broadcast Jul 23, 21:00 UTC
Flights observed
187
Distinct callsigns
2
Country
US
Last broadcast
Jul 23, 21:00 UTC

Last known position

Most recent position reported by Mode-S AB53B9.

Country allocation

The ICAO 24-bit address AB53B9 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
EJA829 - 167 2026-07-23
N829QS - 20 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 EJA829 - Jul 23, 19:55 UTCJul 23, 21:00 UTC1h 5m
2026-07-20 EJA829 YHU → MDW Jul 20, 22:20 UTCJul 21, 00:10 UTC1h 49m
2026-07-20 EJA829 - Jul 20, 00:30 UTCJul 20, 19:40 UTC19h 10m
2026-07-19 EJA829 - Jul 19, 22:40 UTCJul 19, 23:45 UTC1h 5m
2026-07-19 EJA829 - Jul 19, 20:20 UTCJul 19, 21:00 UTC40m
2026-07-19 EJA829 - Jul 19, 16:05 UTCJul 19, 18:50 UTC2h 45m
2026-07-19 EJA829 - Jul 19, 13:00 UTCJul 19, 15:05 UTC2h 5m
2026-07-18 EJA829 - Jul 18, 18:35 UTCJul 18, 19:15 UTC40m
2026-07-18 EJA829 - Jul 18, 16:30 UTCJul 18, 17:50 UTC1h 20m
2026-07-18 EJA829 - Jul 18, 13:15 UTCJul 18, 15:15 UTC2h 0m
2026-07-18 EJA829 - Jul 18, 11:20 UTCJul 18, 11:55 UTC35m
2026-07-17 EJA829 - Jul 17, 21:20 UTCJul 17, 22:10 UTC50m
2026-07-17 EJA829 - Jul 17, 19:00 UTCJul 17, 20:00 UTC1h 0m
2026-07-17 EJA829 - Jul 17, 16:59 UTCJul 17, 18:19 UTC1h 20m
2026-07-17 EJA829 - Jul 17, 15:05 UTCJul 17, 16:00 UTC55m
2026-07-17 EJA829 - Jul 17, 12:40 UTCJul 17, 14:00 UTC1h 20m
2026-07-16 EJA829 - Jul 16, 22:45 UTCJul 16, 23:55 UTC1h 10m
2026-07-16 EJA829 - Jul 16, 20:15 UTCJul 16, 21:35 UTC1h 20m
2026-07-16 EJA829 - Jul 16, 16:09 UTCJul 16, 17:05 UTC55m
2026-07-16 EJA829 - Jul 16, 12:34 UTCJul 16, 14:10 UTC1h 35m
2026-07-15 EJA829 - Jul 15, 23:40 UTCJul 16, 00:30 UTC50m
2026-07-15 EJA829 - Jul 15, 18:25 UTCJul 15, 19:20 UTC55m
2026-07-15 EJA829 WSH → BWI Jul 15, 16:35 UTCJul 15, 17:25 UTC50m
2026-07-12 EJA829 - Jul 12, 17:55 UTCJul 12, 18:25 UTC30m
2026-07-12 EJA829 BLM → MVY Jul 12, 16:05 UTCJul 12, 16:45 UTC40m
2026-07-12 EJA829 - Jul 12, 05:15 UTCJul 12, 09:00 UTC3h 45m
2026-07-11 EJA829 RHV → SLC Jul 11, 02:00 UTCJul 11, 03:15 UTC1h 15m
2026-07-11 EJA829 - Jul 11, 00:35 UTCJul 11, 01:05 UTC30m
2026-07-10 EJA829 - Jul 10, 22:40 UTCJul 10, 23:05 UTC25m
2026-07-10 EJA829 SJC → HHR Jul 10, 16:20 UTCJul 10, 17:10 UTC50m
2026-07-10 EJA829 - Jul 10, 03:05 UTCJul 10, 03:20 UTC15m
2026-07-09 EJA829 - Jul 9, 20:20 UTCJul 10, 02:20 UTC6h 0m
2026-07-09 EJA829 BOS → MVY Jul 9, 18:35 UTCJul 9, 18:55 UTC20m
2026-07-09 EJA829 - Jul 9, 01:55 UTCJul 9, 05:05 UTC3h 10m
2026-07-08 EJA829 AUS → DAL Jul 8, 22:00 UTCJul 8, 22:40 UTC40m
2026-07-08 EJA829 - Jul 8, 19:45 UTCJul 8, 20:20 UTC35m
2026-07-07 EJA829 - Jul 7, 22:55 UTCJul 8, 04:35 UTC5h 40m
2026-07-07 EJA829 - Jul 7, 15:50 UTCJul 7, 18:05 UTC2h 15m
2026-07-07 EJA829 - Jul 7, 14:10 UTCJul 7, 14:55 UTC45m
2026-07-06 EJA829 - Jul 6, 18:25 UTCJul 6, 23:00 UTC4h 35m
2026-07-06 EJA829 BED → HPN Jul 6, 16:55 UTCJul 6, 17:25 UTC30m
2026-07-06 EJA829 - Jul 6, 13:25 UTCJul 6, 16:00 UTC2h 35m
2026-07-06 EJA829 - Jul 6, 12:00 UTCJul 6, 12:30 UTC30m
2026-07-05 EJA829 - Jul 5, 20:15 UTCJul 5, 22:40 UTC2h 25m
2026-07-05 EJA829 LAS → AUS Jul 5, 17:15 UTCJul 5, 19:20 UTC2h 5m
2026-07-03 EJA829 - Jul 3, 21:30 UTCJul 3, 22:15 UTC45m
2026-07-03 EJA829 - Jul 3, 01:55 UTCJul 3, 06:25 UTC4h 30m
2026-07-02 EJA829 LEB → TEB Jul 2, 23:55 UTCJul 3, 00:40 UTC45m
2026-07-02 EJA829 - Jul 2, 21:55 UTCJul 2, 22:25 UTC30m
2026-07-01 EJA829 - Jul 1, 21:05 UTCJul 2, 01:50 UTC4h 45m

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 N829QS page for operator, model, and routing details .

Mode-S AB53B9 frequently asked

What is Mode-S code AB53B9?
AB53B9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N829QS.
Where is Mode-S AB53B9 registered?
Mode-S code AB53B9 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 AB53B9 broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 21:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB53B9, octal 52651671, decimal 11,228,089.
What flights does AB53B9 operate?
Mode-S AB53B9 has broadcast 2 distinct callsigns, including EJA829, N829QS.