Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A26BA5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N255SD · AIRBUS HELICOPTERS EC-120 · operated by SACRAMENTO COUNTY SHERIFFS OFFICE

Hex
A26BA5
Octal
50465645
Decimal
10,644,389
Country
US
Tail
N255SD
Type
EC20
Broadcasting now · callsign N255SD · 700 ft
Flights observed
123
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Current position

A26BA5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A26BA5 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
N255SD - 123 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-07 N255SD - Jun 7, 22:50 UTCJun 8, 00:15 UTC1h 25m
2026-06-07 N255SD - Jun 7, 03:50 UTCJun 7, 05:40 UTC1h 50m
2026-06-06 N255SD - Jun 6, 21:44 UTCJun 6, 23:09 UTC1h 25m
2026-06-06 N255SD - Jun 6, 03:40 UTCJun 6, 05:15 UTC1h 35m
2026-06-05 N255SD - Jun 5, 22:20 UTCJun 5, 23:55 UTC1h 35m
2026-06-05 N255SD MHR → MHR Jun 5, 03:55 UTCJun 5, 06:15 UTC2h 20m
2026-06-04 N255SD MHR → MCC Jun 4, 22:35 UTCJun 4, 23:50 UTC1h 15m
2026-06-04 N255SD MCC → MHR Jun 4, 05:20 UTCJun 4, 05:30 UTC10m
2026-06-04 N255SD - Jun 4, 03:45 UTCJun 4, 05:10 UTC1h 25m
2026-06-04 N255SD MCC → MHR Jun 4, 01:15 UTCJun 4, 01:25 UTC10m
2026-06-04 N255SD - Jun 4, 00:15 UTCJun 4, 01:10 UTC55m
2026-06-03 N255SD MHR → MCC Jun 3, 22:30 UTCJun 3, 22:40 UTC10m
2026-06-03 N255SD MCC → MHR Jun 3, 03:45 UTCJun 3, 05:00 UTC1h 15m
2026-06-03 N255SD MHR → MCC Jun 3, 03:30 UTCJun 3, 03:40 UTC10m
2026-06-02 N255SD - Jun 2, 22:40 UTCJun 2, 23:30 UTC50m
2026-06-02 N255SD - Jun 2, 22:05 UTCJun 2, 22:30 UTC25m
2026-06-02 N255SD - Jun 2, 03:45 UTCJun 2, 04:05 UTC20m
2026-06-02 N255SD - Jun 2, 01:10 UTCJun 2, 03:10 UTC2h 0m
2026-06-01 N255SD MHR → MHR Jun 1, 03:30 UTCJun 1, 04:50 UTC1h 20m
2026-06-01 N255SD MHR → MHR Jun 1, 00:45 UTCJun 1, 02:10 UTC1h 25m
2026-05-30 N255SD - May 30, 23:45 UTCMay 31, 01:11 UTC1h 26m
2026-05-30 N255SD - May 30, 00:50 UTCMay 30, 02:25 UTC1h 35m
2026-05-29 N255SD MHR → MHR May 29, 22:00 UTCMay 29, 23:40 UTC1h 40m
2026-05-29 N255SD MHR → MHR May 29, 16:15 UTCMay 29, 17:25 UTC1h 10m
2026-05-29 N255SD - May 29, 02:35 UTCMay 29, 04:15 UTC1h 40m
2026-05-28 N255SD MHR → MHR May 28, 21:30 UTCMay 28, 22:55 UTC1h 25m
2026-05-28 N255SD MCC → MHR May 28, 04:10 UTCMay 28, 04:20 UTC10m
2026-05-28 N255SD MHR → MCC May 28, 00:40 UTCMay 28, 02:10 UTC1h 30m
2026-05-27 N255SD - May 27, 21:10 UTCMay 27, 23:00 UTC1h 50m
2026-05-27 N255SD - May 27, 03:04 UTCMay 27, 04:39 UTC1h 35m
2026-05-26 N255SD MHR → MHR May 26, 22:39 UTCMay 26, 23:45 UTC1h 5m
2026-05-26 N255SD - May 26, 17:44 UTCMay 26, 18:05 UTC20m
2026-05-26 N255SD - May 26, 16:30 UTCMay 26, 16:50 UTC20m
2026-05-26 N255SD MHR → MHR May 26, 00:44 UTCMay 26, 02:39 UTC1h 55m
2026-05-25 N255SD - May 25, 01:55 UTCMay 25, 02:05 UTC10m
2026-05-24 N255SD MHR → MHR May 24, 19:55 UTCMay 24, 21:35 UTC1h 40m
2026-05-23 N255SD MHR → MHR May 23, 01:50 UTCMay 23, 03:15 UTC1h 25m
2026-05-22 N255SD - May 22, 21:50 UTCMay 22, 23:15 UTC1h 25m
2026-05-22 N255SD - May 22, 02:25 UTCMay 22, 03:30 UTC1h 5m
2026-05-22 N255SD - May 22, 00:05 UTCMay 22, 00:10 UTC5m
2026-05-21 N255SD MHR → MCC May 21, 22:15 UTCMay 21, 23:55 UTC1h 40m
2026-05-20 N255SD MHR → MHR May 20, 01:10 UTCMay 20, 02:55 UTC1h 45m
2026-05-19 N255SD - May 19, 23:00 UTCMay 19, 23:15 UTC15m
2026-05-19 N255SD - May 19, 21:50 UTCMay 19, 22:10 UTC20m
2026-05-19 N255SD MHR → MHR May 19, 05:15 UTCMay 19, 06:25 UTC1h 10m
2026-05-19 N255SD - May 19, 03:15 UTCMay 19, 04:35 UTC1h 20m
2026-05-18 N255SD MHR → MHR May 18, 21:50 UTCMay 18, 23:25 UTC1h 35m
2026-05-18 N255SD MHR → MHR May 18, 04:25 UTCMay 18, 05:50 UTC1h 25m
2026-05-17 N255SD - May 17, 01:05 UTCMay 17, 03:35 UTC2h 30m
2026-05-16 N255SD MHR → MHR May 16, 03:50 UTCMay 16, 05:30 UTC1h 40m

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 N255SD page for operator, model, and routing details .

Mode-S A26BA5 frequently asked

What is Mode-S code A26BA5?
A26BA5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N255SD.
Where is Mode-S A26BA5 registered?
Mode-S code A26BA5 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 A26BA5 broadcasting right now?
Yes. Mode-S A26BA5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A26BA5, octal 50465645, decimal 10,644,389.
What flights does A26BA5 operate?
Mode-S A26BA5 has broadcast 1 distinct callsign, including N255SD.