Apparatus

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sensors Mode-S transponder

AC3F5A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N889AX · CESSNA 208 Caravan · operated by PACIFIC GAS AND ELECTRIC CO

Hex
AC3F5A
Octal
53037532
Decimal
11,288,410
Country
US
Tail
N889AX
Type
C208
No current signal · last broadcast 2d ago
Flights observed
61
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S AC3F5A.

Country allocation

The ICAO 24-bit address AC3F5A 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
N889AX - 61 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-26 N889AX CCR → CCR Jun 26, 16:49 UTCJun 26, 19:45 UTC2h 55m
2026-06-25 N889AX CCR → CCR Jun 25, 16:50 UTCJun 25, 22:04 UTC5h 15m
2026-06-24 N889AX CCR → CCR Jun 24, 16:59 UTCJun 24, 21:54 UTC4h 55m
2026-06-23 N889AX CCR → CCR Jun 23, 17:34 UTCJun 23, 22:19 UTC4h 45m
2026-06-22 N889AX CCR → CCR Jun 22, 17:10 UTCJun 22, 19:00 UTC1h 50m
2026-06-18 N889AX CCR → CCR Jun 18, 17:10 UTCJun 18, 21:10 UTC4h 0m
2026-06-17 N889AX - Jun 17, 15:55 UTCJun 17, 19:55 UTC4h 0m
2026-06-16 N889AX RDD → RDD Jun 16, 16:10 UTCJun 16, 21:10 UTC5h 1m
2026-06-15 N889AX CCR → RDD Jun 15, 16:59 UTCJun 15, 21:30 UTC4h 30m
2026-06-13 N889AX CCR → CCR Jun 13, 16:40 UTCJun 13, 20:25 UTC3h 45m
2026-06-12 N889AX CCR → CCR Jun 12, 16:45 UTCJun 12, 19:30 UTC2h 45m
2026-06-11 N889AX CCR → CCR Jun 11, 17:05 UTCJun 11, 19:45 UTC2h 40m
2026-06-10 N889AX CCR → CCR Jun 10, 16:50 UTCJun 10, 20:30 UTC3h 40m
2026-06-09 N889AX CCR → CCR Jun 9, 17:40 UTCJun 9, 21:00 UTC3h 20m
2026-06-08 N889AX CCR → CCR Jun 8, 16:50 UTCJun 8, 19:00 UTC2h 10m
2026-06-05 N889AX - Jun 5, 19:40 UTCJun 5, 20:15 UTC35m
2026-06-05 N889AX - Jun 5, 17:20 UTCJun 5, 19:05 UTC1h 45m
2026-06-04 N889AX - Jun 4, 20:35 UTCJun 4, 22:40 UTC2h 5m
2026-06-04 N889AX - Jun 4, 17:30 UTCJun 4, 18:15 UTC45m
2026-06-03 N889AX - Jun 3, 21:15 UTCJun 3, 21:50 UTC35m
2026-06-03 N889AX - Jun 3, 17:35 UTCJun 3, 18:15 UTC40m
2026-06-02 N889AX CCR → CCR Jun 2, 17:00 UTCJun 2, 21:05 UTC4h 5m
2026-06-01 N889AX CCR → CCR Jun 1, 17:35 UTCJun 1, 21:50 UTC4h 15m
2026-05-27 N889AX CCR → CCR May 27, 17:30 UTCMay 27, 18:40 UTC1h 10m
2026-05-22 N889AX CCR → CCR May 22, 16:05 UTCMay 22, 20:20 UTC4h 15m
2026-05-21 N889AX CCR → CCR May 21, 21:30 UTCMay 22, 00:10 UTC2h 40m
2026-05-21 N889AX CCR → CCR May 21, 16:25 UTCMay 21, 18:30 UTC2h 5m
2026-05-20 N889AX CCR → CCR May 20, 16:45 UTCMay 20, 20:20 UTC3h 35m
2026-05-19 N889AX CCR → CCR May 19, 17:20 UTCMay 19, 19:35 UTC2h 15m
2026-05-18 N889AX - May 18, 20:30 UTCMay 18, 22:05 UTC1h 35m
2026-05-18 N889AX - May 18, 18:30 UTCMay 18, 19:20 UTC50m
2026-05-15 N889AX RDD → CCR May 15, 16:40 UTCMay 15, 19:55 UTC3h 15m
2026-05-14 N889AX RDD → RDD May 14, 16:25 UTCMay 14, 21:10 UTC4h 45m
2026-05-13 N889AX - May 13, 20:55 UTCMay 13, 22:25 UTC1h 30m
2026-05-13 N889AX - May 13, 17:35 UTCMay 13, 19:45 UTC2h 10m
2026-05-12 N889AX - May 12, 19:40 UTCMay 12, 20:20 UTC40m
2026-05-12 N889AX - May 12, 17:55 UTCMay 12, 18:45 UTC50m
2026-05-12 N889AX - May 12, 16:45 UTCMay 12, 17:15 UTC30m
2026-05-11 N889AX - May 11, 17:55 UTCMay 11, 21:05 UTC3h 10m
2026-05-08 N889AX CCR → CCR May 8, 17:20 UTCMay 8, 21:55 UTC4h 35m
2026-05-07 N889AX CCR → CCR May 7, 17:00 UTCMay 7, 20:30 UTC3h 30m
2026-05-06 N889AX CCR → CCR May 6, 17:05 UTCMay 6, 18:15 UTC1h 9m
2026-05-04 N889AX CCR → CCR May 4, 16:55 UTCMay 4, 19:00 UTC2h 6m
2026-05-01 N889AX CCR → CCR May 1, 17:40 UTCMay 1, 20:40 UTC3h 0m
2026-04-30 N889AX CCR → CCR Apr 30, 16:45 UTCApr 30, 19:45 UTC3h 0m
2026-04-29 N889AX - Apr 29, 19:20 UTCApr 29, 20:40 UTC1h 20m
2026-04-29 N889AX - Apr 29, 16:30 UTCApr 29, 17:35 UTC1h 5m
2026-04-28 N889AX CCR → CCR Apr 28, 16:45 UTCApr 28, 19:50 UTC3h 5m
2026-04-27 N889AX CCR → CCR Apr 27, 17:05 UTCApr 27, 20:35 UTC3h 30m
2026-04-24 N889AX CCR → CCR Apr 24, 16:55 UTCApr 24, 19:10 UTC2h 15m

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 N889AX page for operator, model, and routing details .

Mode-S AC3F5A frequently asked

What is Mode-S code AC3F5A?
AC3F5A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N889AX.
Where is Mode-S AC3F5A registered?
Mode-S code AC3F5A 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 AC3F5A broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC3F5A, octal 53037532, decimal 11,288,410.
What flights does AC3F5A operate?
Mode-S AC3F5A has broadcast 1 distinct callsign, including N889AX.