Apparatus

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sensors Mode-S transponder

ABB2E7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N853EF · CIRRUS SR-20 · operated by LUFTHANSA AVIATION TRAINING USA INC

Hex
ABB2E7
Octal
52731347
Decimal
11,252,455
Country
US
Tail
N853EF
Type
SR20
No current signal · last broadcast 8h ago
Flights observed
126
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S ABB2E7.

Country allocation

The ICAO 24-bit address ABB2E7 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
VAR853 - 126 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 VAR853 - May 29, 17:20 UTCMay 29, 17:55 UTC35m
2026-05-29 VAR853 - May 29, 15:15 UTCMay 29, 16:15 UTC1h 0m
2026-05-28 VAR853 GYR → GYR May 28, 20:55 UTCMay 28, 23:15 UTC2h 20m
2026-05-28 VAR853 - May 28, 18:40 UTCMay 28, 19:30 UTC50m
2026-05-28 VAR853 - May 28, 17:25 UTCMay 28, 18:10 UTC45m
2026-05-25 VAR853 GYR → GYR May 25, 21:30 UTCMay 25, 23:14 UTC1h 45m
2026-05-25 VAR853 GYR → GYR May 25, 18:20 UTCMay 25, 20:15 UTC1h 55m
2026-05-25 VAR853 GYR → GYR May 25, 15:05 UTCMay 25, 16:00 UTC55m
2026-05-25 VAR853 BXK → GYR May 25, 04:05 UTCMay 25, 04:50 UTC45m
2026-05-25 VAR853 GYR → BXK May 25, 03:00 UTCMay 25, 04:00 UTC1h 0m
2026-05-25 VAR853 - May 25, 01:55 UTCMay 25, 02:00 UTC5m
2026-05-24 VAR853 - May 24, 19:55 UTCMay 24, 21:50 UTC1h 55m
2026-05-24 VAR853 GYR → GYR May 24, 16:00 UTCMay 24, 18:50 UTC2h 50m
2026-05-24 VAR853 - May 24, 04:35 UTCMay 24, 05:40 UTC1h 5m
2026-05-24 VAR853 - May 24, 02:00 UTCMay 24, 02:45 UTC45m
2026-05-23 VAR853 GYR → GYR May 23, 22:25 UTCMay 23, 23:55 UTC1h 30m
2026-05-23 VAR853 GYR → GYR May 23, 17:50 UTCMay 23, 19:55 UTC2h 5m
2026-05-23 VAR853 GYR → GYR May 23, 14:50 UTCMay 23, 16:55 UTC2h 5m
2026-05-23 VAR853 GYR → GYR May 23, 03:20 UTCMay 23, 04:40 UTC1h 20m
2026-05-22 VAR853 - May 22, 23:20 UTCMay 23, 01:10 UTC1h 50m
2026-05-22 VAR853 GYR → GYR May 22, 20:45 UTCMay 22, 22:30 UTC1h 45m
2026-05-22 VAR853 GYR → GYR May 22, 17:40 UTCMay 22, 18:35 UTC55m
2026-05-22 VAR853 - May 22, 15:55 UTCMay 22, 16:35 UTC40m
2026-05-22 VAR853 GYR → GYR May 22, 14:00 UTCMay 22, 14:55 UTC55m
2026-05-22 VAR853 - May 22, 04:35 UTCMay 22, 05:05 UTC30m
2026-05-22 VAR853 - May 22, 01:40 UTCMay 22, 03:50 UTC2h 10m
2026-05-21 VAR853 GYR → GYR May 21, 21:50 UTCMay 21, 23:10 UTC1h 20m
2026-05-21 VAR853 GYR → GYR May 21, 18:55 UTCMay 21, 20:45 UTC1h 50m
2026-05-21 VAR853 GYR → GYR May 21, 15:25 UTCMay 21, 17:25 UTC2h 0m
2026-05-21 VAR853 - May 21, 04:50 UTCMay 21, 05:05 UTC15m
2026-05-21 VAR853 - May 21, 04:30 UTCMay 21, 04:35 UTC5m
2026-05-21 VAR853 GYR → GYR May 21, 04:10 UTCMay 21, 04:20 UTC10m
2026-05-21 VAR853 GYR → GYR May 21, 03:45 UTCMay 21, 03:55 UTC10m
2026-05-21 VAR853 GYR → GYR May 21, 03:30 UTCMay 21, 03:35 UTC5m
2026-05-20 VAR853 GYR → GYR May 20, 19:00 UTCMay 20, 20:30 UTC1h 30m
2026-05-19 VAR853 GYR → GYR May 19, 14:45 UTCMay 19, 16:30 UTC1h 45m
2026-05-16 VAR853 GYR → GYR May 16, 14:01 UTCMay 16, 15:01 UTC1h 0m
2026-05-14 VAR853 GYR → GYR May 14, 21:25 UTCMay 14, 23:05 UTC1h 40m
2026-05-13 VAR853 GYR → GYR May 13, 15:15 UTCMay 13, 16:25 UTC1h 10m
2026-05-11 VAR853 - May 11, 20:50 UTCMay 11, 22:35 UTC1h 44m
2026-05-11 VAR853 GYR → GYR May 11, 19:25 UTCMay 11, 19:30 UTC5m
2026-05-11 VAR853 GYR → GYR May 11, 18:25 UTCMay 11, 19:15 UTC50m
2026-05-11 VAR853 GYR → GYR May 11, 15:45 UTCMay 11, 15:55 UTC10m
2026-05-11 VAR853 - May 11, 15:30 UTCMay 11, 15:35 UTC5m
2026-05-11 VAR853 - May 11, 14:25 UTCMay 11, 14:40 UTC15m
2026-05-11 VAR853 GYR → GYR May 11, 05:15 UTCMay 11, 05:20 UTC5m
2026-05-11 VAR853 - May 11, 04:30 UTCMay 11, 04:35 UTC5m
2026-05-11 VAR853 GYR → GYR May 11, 04:05 UTCMay 11, 04:15 UTC10m
2026-05-11 VAR853 GYR → GYR May 11, 00:05 UTCMay 11, 02:15 UTC2h 10m
2026-05-10 VAR853 - May 10, 21:59 UTCMay 10, 22:30 UTC30m

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 N853EF page for operator, model, and routing details .

Mode-S ABB2E7 frequently asked

What is Mode-S code ABB2E7?
ABB2E7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N853EF.
Where is Mode-S ABB2E7 registered?
Mode-S code ABB2E7 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 ABB2E7 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB2E7, octal 52731347, decimal 11,252,455.
What flights does ABB2E7 operate?
Mode-S ABB2E7 has broadcast 1 distinct callsign, including VAR853.