Apparatus

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sensors Mode-S transponder

ABBF11

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N856QS · CESSNA 700 Citation Longitude · operated by NETJETS SALES INC, FLORENCE ANTHONY JR AND FLORENCE CLAIRE, BRANDY STATION LLC, CAMP SASSO HOLDINGS LLC, CLAVIUS CONSULTING LLC, IAMG HOLDINGS LLC

Hex
ABBF11
Octal
52737421
Decimal
11,255,569
Country
US
Tail
N856QS
Type
C700
Broadcasting now · callsign EJA856 · 21,650 ft
Flights observed
72
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Current position

ABBF11 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ABBF11 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
EJA856 NetJets 72 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EJA856 HPN → PBI May 29, 20:40 UTCMay 29, 21:45 UTC1h 5m
2026-05-29 EJA856 HPN → PBI May 29, 01:30 UTCMay 29, 02:15 UTC45m
2026-05-28 EJA856 HPN → PBI May 28, 23:50 UTCMay 29, 00:45 UTC55m
2026-05-28 EJA856 HPN → PBI May 28, 21:30 UTCMay 28, 22:20 UTC50m
2026-05-28 EJA856 HPN → PBI May 28, 19:15 UTCMay 28, 20:00 UTC45m
2026-05-27 EJA856 HPN → PBI May 27, 23:10 UTCMay 27, 23:45 UTC35m
2026-05-27 EJA856 HPN → PBI May 27, 16:25 UTCMay 27, 21:20 UTC4h 55m
2026-05-25 EJA856 HPN → PBI May 25, 21:15 UTCMay 25, 22:10 UTC55m
2026-05-25 EJA856 HPN → PBI May 25, 19:44 UTCMay 25, 21:09 UTC1h 25m
2026-05-25 EJA856 HPN → PBI May 25, 17:20 UTCMay 25, 18:30 UTC1h 10m
2026-05-25 EJA856 HPN → PBI May 25, 01:55 UTCMay 25, 02:50 UTC55m
2026-05-24 EJA856 HPN → PBI May 24, 18:50 UTCMay 24, 23:46 UTC4h 56m
2026-05-24 EJA856 HPN → PBI May 24, 16:50 UTCMay 24, 17:25 UTC35m
2026-05-20 EJA856 HPN → PBI May 20, 13:45 UTCMay 20, 15:45 UTC2h 0m
2026-05-13 EJA856 HPN → PBI May 13, 18:40 UTCMay 13, 20:45 UTC2h 5m
2026-05-13 EJA856 HPN → PBI May 13, 17:30 UTCMay 13, 18:05 UTC35m
2026-05-13 EJA856 HPN → PBI May 13, 13:35 UTCMay 13, 15:45 UTC2h 10m
2026-05-12 EJA856 HPN → PBI May 12, 21:55 UTCMay 12, 22:31 UTC35m
2026-05-12 EJA856 HPN → PBI May 12, 18:25 UTCMay 12, 20:45 UTC2h 20m
2026-05-12 EJA856 HPN → PBI May 12, 15:45 UTCMay 12, 17:00 UTC1h 15m
2026-05-11 EJA856 HPN → PBI May 11, 18:15 UTCMay 11, 19:35 UTC1h 20m
2026-05-11 EJA856 HPN → PBI May 11, 14:15 UTCMay 11, 17:20 UTC3h 6m
2026-05-11 EJA856 HPN → PBI May 11, 12:35 UTCMay 11, 13:30 UTC55m
2026-05-11 EJA856 HPN → PBI May 11, 04:30 UTCMay 11, 05:35 UTC1h 5m
2026-05-11 EJA856 HPN → PBI May 11, 01:45 UTCMay 11, 03:20 UTC1h 35m
2026-05-10 EJA856 HPN → PBI May 10, 00:34 UTCMay 10, 04:09 UTC3h 35m
2026-05-09 EJA856 HPN → PBI May 9, 21:30 UTCMay 9, 21:50 UTC20m
2026-05-09 EJA856 HPN → PBI May 9, 19:05 UTCMay 9, 20:15 UTC1h 10m
2026-05-08 EJA856 HPN → PBI May 8, 22:15 UTCMay 9, 00:00 UTC1h 45m
2026-05-08 EJA856 HPN → PBI May 8, 18:20 UTCMay 8, 21:30 UTC3h 10m
2026-05-08 EJA856 HPN → PBI May 8, 17:20 UTCMay 8, 17:45 UTC25m
2026-05-08 EJA856 HPN → PBI May 8, 01:14 UTCMay 8, 03:35 UTC2h 20m
2026-05-07 EJA856 HPN → PBI May 7, 22:35 UTCMay 7, 22:50 UTC15m
2026-05-07 EJA856 HPN → PBI May 7, 17:55 UTCMay 7, 21:55 UTC4h 0m
2026-05-07 EJA856 HPN → PBI May 7, 01:45 UTCMay 7, 03:15 UTC1h 30m
2026-05-02 EJA856 HPN → PBI May 2, 19:50 UTCMay 2, 22:15 UTC2h 25m
2026-05-02 EJA856 HPN → PBI May 2, 16:45 UTCMay 2, 17:45 UTC1h 0m
2026-05-01 EJA856 HPN → PBI May 1, 18:05 UTCMay 1, 20:20 UTC2h 15m
2026-05-01 EJA856 HPN → PBI May 1, 13:35 UTCMay 1, 17:10 UTC3h 35m
2026-04-30 EJA856 HPN → PBI Apr 30, 21:45 UTCMay 1, 00:25 UTC2h 40m
2026-04-30 EJA856 HPN → PBI Apr 30, 18:40 UTCApr 30, 20:20 UTC1h 40m
2026-04-30 EJA856 HPN → PBI Apr 30, 16:05 UTCApr 30, 17:45 UTC1h 40m
2026-04-29 EJA856 HPN → PBI Apr 29, 19:15 UTCApr 29, 22:45 UTC3h 30m
2026-04-29 EJA856 HPN → PBI Apr 29, 16:20 UTCApr 29, 17:40 UTC1h 20m
2026-04-28 EJA856 HPN → PBI Apr 28, 20:15 UTCApr 28, 20:40 UTC25m
2026-04-26 EJA856 HPN → PBI Apr 26, 00:05 UTCApr 26, 00:15 UTC10m
2026-04-17 EJA856 HPN → PBI Apr 17, 23:25 UTCApr 18, 00:40 UTC1h 15m
2026-04-17 EJA856 HPN → PBI Apr 17, 22:15 UTCApr 17, 23:20 UTC1h 5m
2026-04-17 EJA856 HPN → PBI Apr 17, 19:25 UTCApr 17, 19:55 UTC30m
2026-04-17 EJA856 HPN → PBI Apr 17, 19:00 UTCApr 17, 19:20 UTC20m

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 N856QS page for operator, model, and routing details .

Mode-S ABBF11 frequently asked

What is Mode-S code ABBF11?
ABBF11 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N856QS.
Where is Mode-S ABBF11 registered?
Mode-S code ABBF11 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 ABBF11 broadcasting right now?
Yes. Mode-S ABBF11 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABBF11, octal 52737421, decimal 11,255,569.
What flights does ABBF11 operate?
Mode-S ABBF11 has broadcast 1 distinct callsign, including EJA856.