Apparatus

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sensors Mode-S transponder

ADBABD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N984HP · AEROSPATIALE AS-350 Ecureuil · operated by CALIFORNIA HIGHWAY PATROL, OFFICE OF AIR OPERATIONS

Hex
ADBABD
Octal
53335275
Decimal
11,385,533
Country
US
Tail
N984HP
Type
AS50
No current signal · last broadcast 18d ago
Flights observed
53
Distinct callsigns
2
Country
US
Last broadcast
18d ago

Last known position

Most recent position reported by Mode-S ADBABD.

Country allocation

The ICAO 24-bit address ADBABD 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
CHP58 - 49 2026-06-26
CHP80 - 4 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-26 CHP58 - Jun 26, 21:30 UTCJun 27, 00:44 UTC3h 15m
2026-06-26 CHP58 - Jun 26, 19:14 UTCJun 26, 20:40 UTC1h 25m
2026-06-25 CHP58 - Jun 25, 20:30 UTCJun 25, 21:59 UTC1h 30m
2026-06-25 CHP58 - Jun 25, 17:30 UTCJun 25, 19:09 UTC1h 40m
2026-06-23 CHP58 - Jun 23, 20:10 UTCJun 23, 21:24 UTC1h 15m
2026-06-21 CHP58 - Jun 21, 03:05 UTCJun 21, 05:04 UTC2h 0m
2026-06-20 CHP58 - Jun 20, 23:04 UTCJun 21, 00:29 UTC1h 25m
2026-06-19 CHP58 - Jun 19, 23:14 UTCJun 20, 00:44 UTC1h 30m
2026-06-17 CHP58 - Jun 17, 02:40 UTCJun 17, 03:40 UTC1h 0m
2026-06-11 CHP58 - Jun 11, 03:10 UTCJun 11, 04:20 UTC1h 10m
2026-06-10 CHP58 - Jun 10, 23:30 UTCJun 11, 00:15 UTC45m
2026-06-10 CHP58 - Jun 10, 22:40 UTCJun 10, 23:25 UTC45m
2026-06-10 CHP58 - Jun 10, 00:10 UTCJun 10, 01:50 UTC1h 40m
2026-06-08 CHP58 FUL → FUL Jun 8, 07:30 UTCJun 8, 08:35 UTC1h 5m
2026-06-08 CHP58 FUL → FUL Jun 8, 03:55 UTCJun 8, 05:10 UTC1h 15m
2026-06-08 CHP58 - Jun 8, 01:40 UTCJun 8, 02:45 UTC1h 5m
2026-06-07 CHP58 - Jun 7, 06:55 UTCJun 7, 07:55 UTC1h 0m
2026-06-07 CHP58 - Jun 7, 04:45 UTCJun 7, 05:20 UTC35m
2026-06-07 CHP58 - Jun 7, 03:50 UTCJun 7, 04:10 UTC20m
2026-06-07 CHP58 - Jun 7, 00:39 UTCJun 7, 02:04 UTC1h 25m
2026-06-03 CHP58 FUL → FUL Jun 3, 16:55 UTCJun 3, 17:45 UTC50m
2026-06-02 CHP58 - Jun 2, 04:15 UTCJun 2, 04:55 UTC40m
2026-06-02 CHP58 - Jun 2, 02:55 UTCJun 2, 03:10 UTC15m
2026-06-02 CHP58 - Jun 2, 01:10 UTCJun 2, 02:20 UTC1h 10m
2026-05-31 CHP58 - May 31, 21:00 UTCMay 31, 21:30 UTC30m
2026-05-31 CHP58 - May 31, 19:35 UTCMay 31, 20:15 UTC40m
2026-05-28 CHP58 - May 28, 22:50 UTCMay 29, 00:05 UTC1h 15m
2026-05-28 CHP58 - May 28, 00:00 UTCMay 28, 01:05 UTC1h 5m
2026-05-27 CHP58 FUL → FUL May 27, 20:20 UTCMay 27, 21:45 UTC1h 25m
2026-05-27 CHP58 FUL → FUL May 27, 07:25 UTCMay 27, 07:50 UTC25m
2026-05-27 CHP58 - May 27, 02:34 UTCMay 27, 04:09 UTC1h 35m
2026-05-26 CHP58 - May 26, 23:29 UTCMay 27, 00:59 UTC1h 30m
2026-05-26 CHP58 FUL → FUL May 26, 20:05 UTCMay 26, 20:40 UTC35m
2026-05-23 CHP58 - May 23, 04:55 UTCMay 23, 05:40 UTC45m
2026-05-23 CHP58 - May 23, 00:00 UTCMay 23, 01:50 UTC1h 50m
2026-05-21 CHP58 FUL → FUL May 21, 23:45 UTCMay 22, 01:25 UTC1h 40m
2026-05-21 CHP58 - May 21, 20:35 UTCMay 21, 22:00 UTC1h 25m
2026-05-21 CHP58 - May 21, 01:55 UTCMay 21, 03:00 UTC1h 5m
2026-05-20 CHP58 - May 20, 23:25 UTCMay 21, 00:50 UTC1h 25m
2026-05-20 CHP58 - May 20, 20:45 UTCMay 20, 22:05 UTC1h 20m
2026-05-20 CHP58 - May 20, 16:20 UTCMay 20, 16:30 UTC10m
2026-05-20 CHP58 - May 20, 07:15 UTCMay 20, 08:25 UTC1h 10m
2026-05-20 CHP58 - May 20, 03:40 UTCMay 20, 04:10 UTC30m
2026-05-19 CHP58 - May 19, 22:55 UTCMay 19, 23:45 UTC50m
2026-05-19 CHP58 - May 19, 18:30 UTCMay 19, 19:15 UTC45m
2026-05-18 CHP58 FUL → FUL May 18, 18:25 UTCMay 18, 19:10 UTC44m
2026-05-17 CHP58 FUL → FUL May 17, 03:45 UTCMay 17, 04:05 UTC20m
2026-05-17 CHP58 - May 17, 01:45 UTCMay 17, 02:00 UTC15m
2026-05-16 CHP58 - May 16, 02:15 UTCMay 16, 02:35 UTC20m
2026-05-01 CHP80 - May 1, 19:10 UTCMay 1, 19:20 UTC10m

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 N984HP page for operator, model, and routing details .

Mode-S ADBABD frequently asked

What is Mode-S code ADBABD?
ADBABD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N984HP.
Where is Mode-S ADBABD registered?
Mode-S code ADBABD 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 ADBABD broadcasting right now?
No active broadcast right now. Last signal was 18d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADBABD, octal 53335275, decimal 11,385,533.
What flights does ADBABD operate?
Mode-S ADBABD has broadcast 2 distinct callsigns, including CHP58, CHP80.