Apparatus

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sensors Mode-S transponder

ABBB00

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N855MB · AEROSPATIALE AS-350 Ecureuil · operated by MED-TRANS CORP

Hex
ABBB00
Octal
52735400
Decimal
11,254,528
Country
US
Tail
N855MB
Type
AS50
No current signal · last broadcast 12h ago
Flights observed
76
Distinct callsigns
1
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S ABBB00.

Country allocation

The ICAO 24-bit address ABBB00 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
N855MB - 76 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N855MB - Jul 13, 21:35 UTCJul 13, 22:20 UTC45m
2026-07-13 N855MB - Jul 13, 20:10 UTCJul 13, 20:25 UTC15m
2026-07-09 N855MB - Jul 9, 23:20 UTCJul 9, 23:35 UTC15m
2026-07-09 N855MB GXY → GXY Jul 9, 20:05 UTCJul 9, 20:35 UTC30m
2026-06-28 N855MB - Jun 28, 02:05 UTCJun 28, 02:44 UTC40m
2026-06-28 N855MB - Jun 28, 00:30 UTCJun 28, 01:29 UTC1h 0m
2026-06-24 N855MB - Jun 24, 07:34 UTCJun 24, 08:55 UTC1h 20m
2026-06-22 N855MB - Jun 22, 07:10 UTCJun 22, 09:00 UTC1h 50m
2026-06-18 N855MB - Jun 18, 19:40 UTCJun 18, 20:10 UTC30m
2026-06-18 N855MB - Jun 18, 18:05 UTCJun 18, 18:25 UTC20m
2026-06-16 N855MB - Jun 16, 19:10 UTCJun 16, 19:35 UTC25m
2026-06-15 N855MB - Jun 15, 16:15 UTCJun 15, 16:24 UTC10m
2026-06-14 N855MB - Jun 14, 23:15 UTCJun 15, 00:35 UTC1h 20m
2026-06-14 N855MB - Jun 14, 13:45 UTCJun 14, 15:15 UTC1h 30m
2026-06-14 N855MB - Jun 14, 05:25 UTCJun 14, 07:00 UTC1h 35m
2026-06-12 N855MB - Jun 12, 00:55 UTCJun 12, 01:55 UTC1h 0m
2026-06-11 N855MB - Jun 11, 23:55 UTCJun 12, 00:20 UTC25m
2026-06-10 N855MB - Jun 10, 08:50 UTCJun 10, 10:20 UTC1h 30m
2026-06-09 N855MB - Jun 9, 19:55 UTCJun 9, 21:15 UTC1h 20m
2026-06-09 N855MB - Jun 9, 04:30 UTCJun 9, 05:40 UTC1h 10m
2026-06-09 N855MB - Jun 9, 03:10 UTCJun 9, 03:45 UTC35m
2026-06-08 N855MB - Jun 8, 17:05 UTCJun 8, 17:55 UTC50m
2026-06-08 N855MB - Jun 8, 16:00 UTCJun 8, 16:15 UTC15m
2026-06-08 N855MB - Jun 8, 06:30 UTCJun 8, 06:50 UTC20m
2026-06-07 N855MB - Jun 7, 23:05 UTCJun 7, 23:45 UTC40m
2026-06-07 N855MB - Jun 7, 21:55 UTCJun 7, 22:20 UTC25m
2026-06-06 N855MB - Jun 6, 16:14 UTCJun 6, 17:15 UTC1h 0m
2026-05-26 N855MB - May 26, 23:10 UTCMay 26, 23:45 UTC35m
2026-05-26 N855MB - May 26, 22:05 UTCMay 26, 22:25 UTC20m
2026-05-26 N855MB - May 26, 14:00 UTCMay 26, 16:15 UTC2h 15m
2026-05-24 N855MB - May 24, 23:00 UTCMay 24, 23:15 UTC15m
2026-05-24 N855MB - May 24, 21:20 UTCMay 24, 21:40 UTC20m
2026-05-22 N855MB - May 22, 22:25 UTCMay 23, 00:15 UTC1h 50m
2026-05-21 N855MB - May 21, 09:10 UTCMay 21, 09:50 UTC40m
2026-05-21 N855MB - May 21, 07:45 UTCMay 21, 08:35 UTC50m
2026-05-15 N855MB - May 15, 19:15 UTCMay 15, 20:00 UTC45m
2026-05-15 N855MB - May 15, 18:10 UTCMay 15, 18:30 UTC20m
2026-05-14 N855MB - May 14, 22:20 UTCMay 14, 22:50 UTC30m
2026-05-14 N855MB - May 14, 21:00 UTCMay 14, 21:15 UTC15m
2026-05-13 N855MB - May 13, 22:20 UTCMay 13, 23:35 UTC1h 15m
2026-05-13 N855MB - May 13, 18:30 UTCMay 13, 19:00 UTC30m
2026-05-13 N855MB - May 13, 17:05 UTCMay 13, 17:25 UTC20m
2026-05-11 N855MB - May 11, 13:20 UTCMay 11, 14:40 UTC1h 20m
2026-05-11 N855MB - May 11, 11:55 UTCMay 11, 12:35 UTC40m
2026-05-11 N855MB - May 11, 05:15 UTCMay 11, 05:50 UTC35m
2026-05-11 N855MB - May 11, 04:15 UTCMay 11, 04:35 UTC20m
2026-05-10 N855MB - May 10, 17:30 UTCMay 10, 18:05 UTC35m
2026-05-10 N855MB - May 10, 16:34 UTCMay 10, 16:50 UTC15m
2026-05-09 N855MB - May 9, 16:00 UTCMay 9, 16:55 UTC55m
2026-05-07 N855MB - May 7, 21:30 UTCMay 7, 22:59 UTC1h 30m

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 N855MB page for operator, model, and routing details .

Mode-S ABBB00 frequently asked

What is Mode-S code ABBB00?
ABBB00 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N855MB.
Where is Mode-S ABBB00 registered?
Mode-S code ABBB00 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 ABBB00 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABBB00, octal 52735400, decimal 11,254,528.
What flights does ABBB00 operate?
Mode-S ABBB00 has broadcast 1 distinct callsign, including N855MB.