Apparatus

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sensors Mode-S transponder

ACB741

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N91834 · PIPER PA-28-140/150/160/180 · operated by SKYLINK XPRESS INC

Hex
ACB741
Octal
53133501
Decimal
11,319,105
Country
US
Tail
N91834
Type
P28A
No current signal · last broadcast 8h ago
Flights observed
107
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S ACB741.

Country allocation

The ICAO 24-bit address ACB741 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
N91834 - 107 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 N91834 SBD → SBD Jul 19, 15:25 UTCJul 19, 16:00 UTC35m
2026-07-17 N91834 SBD → SBD Jul 17, 18:25 UTCJul 17, 19:05 UTC40m
2026-07-17 N91834 - Jul 17, 15:35 UTCJul 17, 16:40 UTC1h 5m
2026-07-15 N91834 SBD → SBD Jul 15, 16:50 UTCJul 15, 17:10 UTC20m
2026-07-15 N91834 - Jul 15, 02:40 UTCJul 15, 03:00 UTC20m
2026-07-15 N91834 SBD → SBD Jul 15, 00:05 UTCJul 15, 01:40 UTC1h 35m
2026-07-14 N91834 - Jul 14, 18:50 UTCJul 14, 20:50 UTC2h 0m
2026-07-14 N91834 SBD → SBD Jul 14, 17:50 UTCJul 14, 18:00 UTC10m
2026-07-14 N91834 - Jul 14, 17:35 UTCJul 14, 17:45 UTC10m
2026-07-13 N91834 SBD → SBD Jul 13, 21:15 UTCJul 13, 22:35 UTC1h 20m
2026-07-12 N91834 SBD → SBD Jul 12, 18:35 UTCJul 12, 20:10 UTC1h 35m
2026-07-09 N91834 SBD → SBD Jul 9, 18:20 UTCJul 9, 19:45 UTC1h 25m
2026-07-08 N91834 SBD → SBD Jul 8, 17:50 UTCJul 8, 19:15 UTC1h 25m
2026-07-08 N91834 - Jul 8, 01:45 UTCJul 8, 02:30 UTC45m
2026-07-08 N91834 SBD → BUR Jul 8, 00:25 UTCJul 8, 01:35 UTC1h 10m
2026-07-07 N91834 SAC → SBD Jul 7, 03:00 UTCJul 7, 07:10 UTC4h 10m
2026-07-06 N91834 SBD → SAC Jul 6, 20:00 UTCJul 6, 23:50 UTC3h 50m
2026-07-05 N91834 - Jul 5, 06:20 UTCJul 5, 06:55 UTC35m
2026-07-05 N91834 - Jul 5, 03:40 UTCJul 5, 04:35 UTC55m
2026-07-05 N91834 - Jul 5, 00:00 UTCJul 5, 00:25 UTC25m
2026-07-04 N91834 BFL → SBD Jul 4, 20:25 UTCJul 4, 22:10 UTC1h 45m
2026-07-04 N91834 SBD → BFL Jul 4, 18:35 UTCJul 4, 20:05 UTC1h 30m
2026-07-03 N91834 - Jul 3, 00:15 UTCJul 3, 03:00 UTC2h 45m
2026-07-02 N91834 - Jul 2, 19:20 UTCJul 2, 22:25 UTC3h 5m
2026-07-01 N91834 SBD → SBD Jul 1, 22:30 UTCJul 2, 00:15 UTC1h 45m
2026-06-30 N91834 SBD → SBD Jun 30, 23:00 UTCJul 1, 00:30 UTC1h 30m
2026-06-30 N91834 SBD → SBD Jun 30, 21:15 UTCJun 30, 22:10 UTC55m
2026-06-29 N91834 - Jun 29, 23:44 UTCJun 30, 02:00 UTC2h 16m
2026-06-29 N91834 - Jun 29, 20:00 UTCJun 29, 22:19 UTC2h 20m
2026-06-29 N91834 SBA → SBD Jun 29, 01:05 UTCJun 29, 02:35 UTC1h 30m
2026-06-28 N91834 SBD → SBA Jun 28, 22:10 UTCJun 29, 00:10 UTC2h 0m
2026-06-28 N91834 SBD → SBD Jun 28, 19:34 UTCJun 28, 20:59 UTC1h 25m
2026-06-28 N91834 BFL → SBD Jun 28, 03:05 UTCJun 28, 04:29 UTC1h 25m
2026-06-28 N91834 SBD → BFL Jun 28, 00:25 UTCJun 28, 02:10 UTC1h 45m
2026-06-27 N91834 - Jun 27, 22:29 UTCJun 27, 22:55 UTC25m
2026-06-27 N91834 - Jun 27, 21:19 UTCJun 27, 21:50 UTC30m
2026-06-25 N91834 CLD → SBD Jun 25, 21:55 UTCJun 25, 22:54 UTC1h 0m
2026-06-25 N91834 SBD → CLD Jun 25, 20:19 UTCJun 25, 21:05 UTC45m
2026-06-24 N91834 SBD → SBD Jun 24, 18:55 UTCJun 24, 21:04 UTC2h 10m
2026-06-23 N91834 - Jun 23, 23:00 UTCJun 24, 01:24 UTC2h 25m
2026-06-23 N91834 - Jun 23, 18:50 UTCJun 23, 21:24 UTC2h 35m
2026-06-22 N91834 BFL → SBD Jun 22, 20:04 UTCJun 22, 21:45 UTC1h 40m
2026-06-22 N91834 SBD → BFL Jun 22, 17:29 UTCJun 22, 19:09 UTC1h 40m
2026-06-21 N91834 - Jun 21, 22:15 UTCJun 21, 23:55 UTC1h 40m
2026-06-20 N91834 SBD → SBD Jun 20, 17:14 UTCJun 20, 17:34 UTC20m
2026-06-20 N91834 SBD → SBD Jun 20, 16:49 UTCJun 20, 17:10 UTC20m
2026-06-19 N91834 SBD → SBD Jun 19, 22:24 UTCJun 19, 23:04 UTC40m
2026-06-18 N91834 - Jun 18, 22:15 UTCJun 18, 23:50 UTC1h 35m
2026-06-18 N91834 - Jun 18, 04:10 UTCJun 18, 06:45 UTC2h 35m
2026-06-18 N91834 - Jun 18, 03:10 UTCJun 18, 03:30 UTC20m

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 N91834 page for operator, model, and routing details .

Mode-S ACB741 frequently asked

What is Mode-S code ACB741?
ACB741 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N91834.
Where is Mode-S ACB741 registered?
Mode-S code ACB741 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 ACB741 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACB741, octal 53133501, decimal 11,319,105.
What flights does ACB741 operate?
Mode-S ACB741 has broadcast 1 distinct callsign, including N91834.