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 6h ago
Flights observed
86
Distinct callsigns
2
Country
US
Last broadcast
6h ago

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 NetJets 77 2026-05-29
N829QS - 9 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA829 ALB → ATW May 29, 23:20 UTCMay 30, 03:15 UTC3h 55m
2026-05-29 EJA829 ALB → ATW May 29, 19:10 UTCMay 29, 20:20 UTC1h 10m
2026-05-29 EJA829 ALB → ATW May 29, 05:15 UTCMay 29, 06:05 UTC50m
2026-05-29 EJA829 ALB → ATW May 29, 01:15 UTCMay 29, 01:35 UTC20m
2026-05-27 EJA829 ALB → ATW May 27, 19:20 UTCMay 27, 19:35 UTC15m
2026-05-27 EJA829 ALB → ATW May 27, 13:45 UTCMay 27, 18:35 UTC4h 50m
2026-05-26 EJA829 ALB → ATW May 26, 22:54 UTCMay 27, 00:49 UTC1h 55m
2026-05-26 EJA829 ALB → ATW May 26, 18:30 UTCMay 26, 21:20 UTC2h 50m
2026-05-26 EJA829 ALB → ATW May 26, 15:54 UTCMay 26, 17:30 UTC1h 35m
2026-05-22 EJA829 ALB → ATW May 22, 19:40 UTCMay 22, 20:15 UTC35m
2026-05-22 EJA829 ALB → ATW May 22, 18:15 UTCMay 22, 18:55 UTC40m
2026-05-20 EJA829 ALB → ATW May 20, 18:15 UTCMay 20, 23:15 UTC5h 0m
2026-05-20 EJA829 ALB → ATW May 20, 15:30 UTCMay 20, 16:25 UTC55m
2026-05-20 EJA829 ALB → ATW May 20, 12:45 UTCMay 20, 14:10 UTC1h 25m
2026-05-19 EJA829 ALB → ATW May 19, 20:20 UTCMay 19, 21:00 UTC40m
2026-05-17 EJA829 ALB → ATW May 17, 15:25 UTCMay 17, 16:45 UTC1h 20m
2026-05-16 N829QS - May 16, 18:15 UTCMay 17, 01:55 UTC7h 40m
2026-05-16 EJA829 ALB → ATW May 16, 15:20 UTCMay 16, 16:55 UTC1h 35m
2026-05-15 EJA829 ALB → ATW May 15, 19:10 UTCMay 15, 21:20 UTC2h 10m
2026-05-15 EJA829 ALB → ATW May 15, 12:15 UTCMay 15, 17:20 UTC5h 4m
2026-05-14 EJA829 ALB → ATW May 14, 22:10 UTCMay 15, 00:05 UTC1h 55m
2026-05-14 EJA829 ALB → ATW May 14, 19:35 UTCMay 14, 20:35 UTC1h 0m
2026-05-14 EJA829 ALB → ATW May 14, 15:15 UTCMay 14, 17:55 UTC2h 40m
2026-05-13 EJA829 ALB → ATW May 13, 21:20 UTCMay 13, 21:30 UTC10m
2026-05-13 EJA829 ALB → ATW May 13, 16:45 UTCMay 13, 20:15 UTC3h 30m
2026-05-13 EJA829 ALB → ATW May 13, 13:40 UTCMay 13, 14:20 UTC40m
2026-05-13 EJA829 ALB → ATW May 13, 11:15 UTCMay 13, 12:50 UTC1h 35m
2026-05-12 EJA829 ALB → ATW May 12, 22:55 UTCMay 12, 23:40 UTC45m
2026-05-07 EJA829 ALB → ATW May 7, 22:25 UTCMay 8, 00:25 UTC1h 59m
2026-05-07 EJA829 ALB → ATW May 7, 21:00 UTCMay 7, 21:35 UTC35m
2026-05-07 EJA829 ALB → ATW May 7, 18:10 UTCMay 7, 19:20 UTC1h 10m
2026-05-07 EJA829 ALB → ATW May 7, 15:50 UTCMay 7, 16:10 UTC20m
2026-05-06 EJA829 ALB → ATW May 6, 23:15 UTCMay 7, 01:30 UTC2h 15m
2026-05-04 EJA829 ALB → ATW May 4, 23:45 UTCMay 5, 03:30 UTC3h 45m
2026-05-04 EJA829 ALB → ATW May 4, 22:25 UTCMay 4, 22:50 UTC25m
2026-05-04 EJA829 ALB → ATW May 4, 01:24 UTCMay 4, 05:25 UTC4h 0m
2026-05-03 EJA829 ALB → ATW May 3, 21:44 UTCMay 3, 23:25 UTC1h 40m
2026-05-03 EJA829 ALB → ATW May 3, 18:45 UTCMay 3, 20:15 UTC1h 30m
2026-05-03 N829QS - May 3, 14:35 UTCMay 3, 17:40 UTC3h 5m
2026-05-02 N829QS - May 2, 20:55 UTCMay 2, 21:15 UTC20m
2026-05-02 EJA829 ALB → ATW May 2, 18:00 UTCMay 2, 19:55 UTC1h 55m
2026-05-02 EJA829 ALB → ATW May 2, 16:35 UTCMay 2, 16:50 UTC15m
2026-04-30 EJA829 ALB → ATW Apr 30, 18:10 UTCApr 30, 20:40 UTC2h 30m
2026-04-30 EJA829 ALB → ATW Apr 30, 16:20 UTCApr 30, 17:20 UTC1h 0m
2026-04-30 EJA829 ALB → ATW Apr 30, 13:30 UTCApr 30, 14:35 UTC1h 5m
2026-04-29 EJA829 ALB → ATW Apr 29, 20:30 UTCApr 29, 21:20 UTC50m
2026-04-29 EJA829 ALB → ATW Apr 29, 13:25 UTCApr 29, 14:15 UTC50m
2026-04-28 EJA829 ALB → ATW Apr 28, 19:15 UTCApr 28, 21:15 UTC2h 0m
2026-04-28 EJA829 ALB → ATW Apr 28, 16:40 UTCApr 28, 17:30 UTC50m
2026-04-27 EJA829 ALB → ATW Apr 27, 20:15 UTCApr 28, 01:15 UTC5h 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 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 6h ago.
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.