Apparatus

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sensors Mode-S transponder

AB7B38

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N839QS · CESSNA 700 Citation Longitude · operated by VER 700 LLC, OFFENBERG ALAN, CASCABELLES DOS LLC, CEPUKENAS CRAIGH A, CEPUKENAS DIANE M, VERNER JEREL

Hex
AB7B38
Octal
52675470
Decimal
11,238,200
Country
US
Tail
N839QS
Type
C700
No current signal · last broadcast 13h ago
Flights observed
198
Distinct callsigns
2
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S AB7B38.

Country allocation

The ICAO 24-bit address AB7B38 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
EJA839 - 179 2026-07-13
N839QS - 19 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 EJA839 - Jul 13, 13:00 UTCJul 13, 13:25 UTC25m
2026-07-12 EJA839 - Jul 12, 21:40 UTCJul 12, 23:30 UTC1h 50m
2026-07-12 EJA839 - Jul 12, 20:15 UTCJul 12, 20:45 UTC30m
2026-07-12 EJA839 - Jul 12, 19:01 UTCJul 12, 19:10 UTC10m
2026-07-12 EJA839 - Jul 12, 15:01 UTCJul 12, 17:40 UTC2h 40m
2026-07-11 EJA839 LGA → BED Jul 11, 22:10 UTCJul 11, 22:50 UTC40m
2026-07-11 EJA839 - Jul 11, 17:30 UTCJul 11, 19:00 UTC1h 30m
2026-07-11 EJA839 - Jul 11, 11:35 UTCJul 11, 13:05 UTC1h 30m
2026-07-10 EJA839 - Jul 10, 21:45 UTCJul 10, 22:40 UTC55m
2026-07-10 EJA839 - Jul 10, 14:50 UTCJul 10, 15:40 UTC50m
2026-07-10 EJA839 - Jul 10, 12:15 UTCJul 10, 13:30 UTC1h 15m
2026-07-09 EJA839 - Jul 9, 19:50 UTCJul 9, 20:40 UTC50m
2026-07-09 EJA839 - Jul 9, 18:35 UTCJul 9, 19:05 UTC30m
2026-07-09 EJA839 - Jul 9, 14:05 UTCJul 9, 14:50 UTC45m
2026-07-09 EJA839 - Jul 9, 11:45 UTCJul 9, 12:20 UTC35m
2026-07-09 EJA839 - Jul 9, 05:10 UTCJul 9, 09:50 UTC4h 40m
2026-07-09 EJA839 SJC → SDM Jul 9, 03:05 UTCJul 9, 04:05 UTC1h 0m
2026-07-07 EJA839 - Jul 7, 19:50 UTCJul 7, 20:30 UTC40m
2026-07-07 EJA839 - Jul 7, 16:30 UTCJul 7, 16:40 UTC10m
2026-07-07 EJA839 - Jul 7, 13:55 UTCJul 7, 15:00 UTC1h 5m
2026-07-07 EJA839 BFI → NUQ Jul 7, 04:50 UTCJul 7, 06:30 UTC1h 40m
2026-07-06 EJA839 - Jul 6, 23:55 UTCJul 7, 01:50 UTC1h 55m
2026-07-06 EJA839 - Jul 6, 21:35 UTCJul 6, 22:25 UTC50m
2026-07-05 EJA839 BOS → SFO Jul 5, 22:30 UTCJul 6, 04:55 UTC6h 25m
2026-07-05 EJA839 IAD → BOS Jul 5, 17:50 UTCJul 5, 18:50 UTC1h 0m
2026-07-02 EJA839 - Jul 2, 22:10 UTCJul 2, 23:30 UTC1h 20m
2026-07-02 EJA839 - Jul 2, 17:40 UTCJul 2, 17:50 UTC10m
2026-07-02 EJA839 - Jul 2, 15:15 UTCJul 2, 16:35 UTC1h 20m
2026-07-02 EJA839 - Jul 2, 12:10 UTCJul 2, 14:20 UTC2h 10m
2026-07-01 EJA839 - Jul 1, 21:55 UTCJul 1, 23:45 UTC1h 50m
2026-07-01 EJA839 - Jul 1, 18:40 UTCJul 1, 18:50 UTC10m
2026-07-01 EJA839 - Jul 1, 14:40 UTCJul 1, 17:55 UTC3h 15m
2026-07-01 EJA839 - Jul 1, 12:45 UTCJul 1, 13:20 UTC35m
2026-06-25 EJA839 - Jun 25, 00:35 UTCJun 25, 01:14 UTC40m
2026-06-24 EJA839 - Jun 24, 21:19 UTCJun 24, 23:20 UTC2h 0m
2026-06-24 EJA839 SJC → SCF Jun 24, 17:34 UTCJun 24, 19:00 UTC1h 25m
2026-06-23 EJA839 TEB → SJC Jun 23, 22:49 UTCJun 24, 04:39 UTC5h 50m
2026-06-23 EJA839 - Jun 23, 20:19 UTCJun 23, 20:54 UTC35m
2026-06-23 EJA839 - Jun 23, 16:35 UTCJun 23, 18:55 UTC2h 20m
2026-06-22 N839QS - Jun 22, 20:04 UTCJun 23, 15:30 UTC19h 25m
2026-06-22 N839QS - Jun 22, 19:54 UTCJun 23, 15:30 UTC19h 35m
2026-06-22 EJA839 - Jun 22, 01:19 UTCJun 22, 02:45 UTC1h 25m
2026-06-21 EJA839 - Jun 21, 21:34 UTCJun 21, 23:14 UTC1h 40m
2026-06-21 EJA839 - Jun 21, 15:30 UTCJun 21, 18:04 UTC2h 35m
2026-06-20 EJA839 - Jun 20, 23:25 UTCJun 21, 00:04 UTC40m
2026-06-20 EJA839 - Jun 20, 16:00 UTCJun 20, 16:44 UTC45m
2026-06-19 EJA839 - Jun 19, 23:44 UTCJun 20, 00:24 UTC40m
2026-06-19 EJA839 - Jun 19, 18:09 UTCJun 19, 21:04 UTC2h 55m
2026-06-19 EJA839 - Jun 19, 01:45 UTCJun 19, 02:59 UTC1h 15m
2026-06-18 N839QS - Jun 18, 22:00 UTCJun 19, 00:40 UTC2h 39m

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 N839QS page for operator, model, and routing details .

Mode-S AB7B38 frequently asked

What is Mode-S code AB7B38?
AB7B38 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N839QS.
Where is Mode-S AB7B38 registered?
Mode-S code AB7B38 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 AB7B38 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB7B38, octal 52675470, decimal 11,238,200.
What flights does AB7B38 operate?
Mode-S AB7B38 has broadcast 2 distinct callsigns, including EJA839, N839QS.