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sensors Mode-S transponder

AA90B4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N780BW · operated by BRIDGEWATER STATE UNIVERSITY

Hex
AA90B4
Octal
52510264
Decimal
11,178,164
Country
US
Tail
N780BW
No current signal · last broadcast Jul 24, 19:20 UTC
Flights observed
72
Distinct callsigns
1
Country
US
Last broadcast
Jul 24, 19:20 UTC

Last known position

Most recent position reported by Mode-S AA90B4.

Country allocation

The ICAO 24-bit address AA90B4 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
N780BW - 72 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 N780BW EWB → EWB Jul 24, 17:50 UTCJul 24, 19:20 UTC1h 30m
2026-07-24 N780BW - Jul 24, 15:25 UTCJul 24, 16:45 UTC1h 20m
2026-07-23 N780BW EWB → EWB Jul 23, 21:10 UTCJul 23, 22:25 UTC1h 15m
2026-07-23 N780BW - Jul 23, 18:35 UTCJul 23, 19:30 UTC55m
2026-07-20 N780BW - Jul 20, 21:20 UTCJul 20, 22:35 UTC1h 15m
2026-07-20 N780BW EWB → EWB Jul 20, 18:35 UTCJul 20, 19:35 UTC1h 0m
2026-07-20 N780BW - Jul 20, 15:25 UTCJul 20, 16:40 UTC1h 15m
2026-07-19 N780BW EWB → EWB Jul 19, 14:45 UTCJul 19, 16:25 UTC1h 40m
2026-06-22 N780BW EWB → EWB Jun 22, 18:15 UTCJun 22, 20:04 UTC1h 50m
2026-06-22 N780BW - Jun 22, 15:40 UTCJun 22, 16:20 UTC40m
2026-06-22 N780BW EWB → EWB Jun 22, 12:34 UTCJun 22, 13:10 UTC35m
2026-06-21 N780BW - Jun 21, 15:19 UTCJun 21, 16:59 UTC1h 40m
2026-06-18 N780BW EWB → EWB Jun 18, 02:15 UTCJun 18, 04:45 UTC2h 30m
2026-06-18 N780BW EWB → EWB Jun 18, 01:25 UTCJun 18, 01:40 UTC15m
2026-06-17 N780BW - Jun 17, 22:00 UTCJun 17, 22:55 UTC55m
2026-06-17 N780BW EWB → EWB Jun 17, 15:25 UTCJun 17, 16:25 UTC1h 0m
2026-06-16 N780BW EWB → EWB Jun 16, 22:25 UTCJun 17, 00:00 UTC1h 35m
2026-06-16 N780BW - Jun 16, 17:59 UTCJun 16, 19:50 UTC1h 51m
2026-06-16 N780BW - Jun 16, 13:30 UTCJun 16, 14:45 UTC1h 15m
2026-06-15 N780BW EWB → EWB Jun 15, 22:35 UTCJun 15, 23:50 UTC1h 15m
2026-06-15 N780BW EWB → EWB Jun 15, 15:45 UTCJun 15, 16:59 UTC1h 15m
2026-06-13 N780BW - Jun 13, 15:05 UTCJun 13, 16:00 UTC55m
2026-06-13 N780BW EWB → EWB Jun 13, 12:45 UTCJun 13, 13:55 UTC1h 10m
2026-06-12 N780BW EWB → EWB Jun 12, 21:00 UTCJun 12, 21:30 UTC30m
2026-06-12 N780BW - Jun 12, 18:01 UTCJun 12, 19:20 UTC1h 20m
2026-06-12 N780BW - Jun 12, 15:20 UTCJun 12, 16:25 UTC1h 5m
2026-06-12 N780BW - Jun 12, 13:00 UTCJun 12, 14:20 UTC1h 20m
2026-06-11 N780BW EWB → EWB Jun 11, 21:15 UTCJun 11, 23:45 UTC2h 30m
2026-06-11 N780BW EWB → EWB Jun 11, 17:50 UTCJun 11, 19:20 UTC1h 30m
2026-06-09 N780BW EWB → EWB Jun 9, 13:15 UTCJun 9, 14:05 UTC50m
2026-05-05 N780BW - May 5, 18:45 UTCMay 5, 20:05 UTC1h 20m
2026-05-05 N780BW EWB → EWB May 5, 13:00 UTCMay 5, 14:15 UTC1h 15m
2026-05-04 N780BW - May 4, 15:30 UTCMay 4, 17:00 UTC1h 30m
2026-05-04 N780BW - May 4, 12:50 UTCMay 4, 13:35 UTC45m
2026-05-03 N780BW - May 3, 12:45 UTCMay 3, 14:45 UTC2h 0m
2026-05-02 N780BW - May 2, 18:35 UTCMay 2, 19:35 UTC1h 0m
2026-05-02 N780BW EWB → EWB May 2, 13:15 UTCMay 2, 14:00 UTC45m
2026-05-02 N780BW EWB → EWB May 2, 01:15 UTCMay 2, 02:30 UTC1h 15m
2026-05-01 N780BW - May 1, 22:05 UTCMay 1, 23:20 UTC1h 15m
2026-05-01 N780BW - May 1, 15:15 UTCMay 1, 16:20 UTC1h 5m
2026-05-01 N780BW - May 1, 12:55 UTCMay 1, 13:55 UTC1h 0m
2026-04-30 N780BW EWB → EWB Apr 30, 21:45 UTCApr 30, 22:30 UTC45m
2026-04-30 N780BW - Apr 30, 18:20 UTCApr 30, 20:30 UTC2h 10m
2026-04-30 N780BW - Apr 30, 15:45 UTCApr 30, 17:40 UTC1h 55m
2026-04-29 N780BW EWB → EWB Apr 29, 21:20 UTCApr 29, 22:25 UTC1h 5m
2026-04-28 N780BW - Apr 28, 21:30 UTCApr 28, 22:45 UTC1h 15m
2026-04-28 N780BW - Apr 28, 18:30 UTCApr 28, 20:10 UTC1h 40m
2026-04-28 N780BW EWB → EWB Apr 28, 15:10 UTCApr 28, 16:20 UTC1h 10m
2026-04-28 N780BW - Apr 28, 12:20 UTCApr 28, 14:15 UTC1h 55m
2026-04-27 N780BW - Apr 27, 21:35 UTCApr 27, 22:40 UTC1h 5m

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 N780BW page for operator, model, and routing details .

Mode-S AA90B4 frequently asked

What is Mode-S code AA90B4?
AA90B4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N780BW.
Where is Mode-S AA90B4 registered?
Mode-S code AA90B4 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 AA90B4 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 19:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA90B4, octal 52510264, decimal 11,178,164.
What flights does AA90B4 operate?
Mode-S AA90B4 has broadcast 1 distinct callsign, including N780BW.