Apparatus

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sensors Mode-S transponder

A1D3B4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N217BZ · AIRBUS A220-300 · operated by BANK OF UTAH TRUSTEE

Hex
A1D3B4
Octal
50351664
Decimal
10,605,492
Country
US
Tail
N217BZ
Type
BCS3
No current signal · last broadcast 10d ago
Flights observed
359
Distinct callsigns
20
Country
US
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S A1D3B4.

Country allocation

The ICAO 24-bit address A1D3B4 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 20 distinct

Callsign Airline Flights Last seen
MXY843 Breeze Airways 9 2026-05-17
MXY855 - 8 2026-06-20
MXY854 - 8 2026-06-19
MXY842 Breeze Airways 8 2026-05-14
MXY823 Breeze Airways 7 2026-05-10
MXY822 Breeze Airways 7 2026-05-10
MXY535 - 6 2026-06-24
MXY534 - 6 2026-06-23
MXY509 - 6 2026-06-30
MXY508 - 6 2026-06-29
MXY2855 - 6 2026-06-19
MXY819 Breeze Airways 5 2026-04-19
MXY818 Breeze Airways 5 2026-04-18
MXY2854 - 5 2026-06-18
MXY809 Breeze Airways 4 2026-04-17
MXY642 Breeze Airways 4 2026-05-04
MXY640 Breeze Airways 4 2026-05-03
MXY634 Breeze Airways 4 2026-05-04
MXY547 Breeze Airways 4 2026-05-26
MXY546 Breeze Airways 4 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-03 MXY9517 - Jul 3, 14:20 UTCJul 3, 15:10 UTC50m
2026-07-02 MXY523 MCO → BDL Jul 2, 02:10 UTCJul 2, 04:35 UTC2h 25m
2026-07-01 MXY523 - Jul 1, 20:25 UTCJul 2, 01:00 UTC4h 35m
2026-07-01 MXY522 - Jul 1, 14:15 UTCJul 1, 19:05 UTC4h 50m
2026-07-01 MXY522 - Jul 1, 10:30 UTCJul 1, 13:00 UTC2h 30m
2026-07-01 MXY523 MCO → BDL Jul 1, 02:30 UTCJul 1, 04:55 UTC2h 25m
2026-06-30 MXY523 - Jun 30, 20:15 UTCJul 1, 01:00 UTC4h 45m
2026-06-30 MXY522 - Jun 30, 14:00 UTCJun 30, 18:40 UTC4h 40m
2026-06-30 MXY522 - Jun 30, 10:15 UTCJun 30, 12:30 UTC2h 15m
2026-06-30 MXY509 ORF → BDL Jun 30, 00:00 UTCJun 30, 01:04 UTC1h 5m
2026-06-29 MXY509 LAS → ORF Jun 29, 18:39 UTCJun 29, 22:55 UTC4h 15m
2026-06-29 MXY508 ORF → LAS Jun 29, 12:29 UTCJun 29, 17:19 UTC4h 50m
2026-06-29 MXY508 BDL → ORF Jun 29, 10:00 UTCJun 29, 11:04 UTC1h 5m
2026-06-29 MXY543 MSY → BDL Jun 29, 01:20 UTCJun 29, 02:59 UTC1h 40m
2026-06-28 MXY543 MSY → BDL Jun 28, 19:59 UTCJun 28, 23:50 UTC3h 50m
2026-06-28 MXY542 MSY → LAX Jun 28, 13:55 UTCJun 28, 18:10 UTC4h 15m
2026-06-28 MXY542 MSY → LAX Jun 28, 11:00 UTCJun 28, 12:39 UTC1h 40m
2026-06-28 MXY1695 LAX → CHS Jun 28, 01:34 UTCJun 28, 03:14 UTC1h 40m
2026-06-27 MXY1695 LAX → CHS Jun 27, 20:04 UTCJun 28, 00:25 UTC4h 20m
2026-06-27 MXY1694 BDL → CHS Jun 27, 13:35 UTCJun 27, 18:20 UTC4h 45m
2026-06-27 MXY1694 BDL → CHS Jun 27, 10:45 UTCJun 27, 12:29 UTC1h 45m
2026-06-26 MXY533 TPA → BDL Jun 26, 19:14 UTCJun 26, 21:45 UTC2h 30m
2026-06-26 MXY533 - Jun 26, 17:25 UTCJun 26, 18:04 UTC40m
2026-06-26 MXY532 - Jun 26, 15:15 UTCJun 26, 15:45 UTC30m
2026-06-26 MXY532 - Jun 26, 11:40 UTCJun 26, 14:15 UTC2h 35m
2026-06-26 MXY501 - Jun 26, 00:35 UTCJun 26, 02:14 UTC1h 40m
2026-06-25 MXY501 - Jun 25, 22:04 UTCJun 25, 23:19 UTC1h 15m
2026-06-25 MXY500 - Jun 25, 19:44 UTCJun 25, 21:05 UTC1h 20m
2026-06-25 MXY500 - Jun 25, 16:39 UTCJun 25, 18:24 UTC1h 45m
2026-06-25 MXY509 ORF → BDL Jun 25, 14:14 UTCJun 25, 15:10 UTC55m
2026-06-25 MXY508 - Jun 25, 12:04 UTCJun 25, 13:05 UTC1h 0m
2026-06-24 MXY535 - Jun 24, 02:00 UTCJun 24, 02:54 UTC55m
2026-06-23 MXY535 - Jun 23, 20:29 UTCJun 24, 00:49 UTC4h 20m
2026-06-23 MXY534 - Jun 23, 13:45 UTCJun 23, 19:00 UTC5h 15m
2026-06-23 MXY534 - Jun 23, 11:04 UTCJun 23, 12:09 UTC1h 5m
2026-06-23 MXY563 - Jun 23, 01:30 UTCJun 23, 03:04 UTC1h 35m
2026-06-22 MXY563 - Jun 22, 20:14 UTCJun 23, 00:39 UTC4h 25m
2026-06-22 MXY562 - Jun 22, 14:05 UTCJun 22, 18:54 UTC4h 50m
2026-06-22 MXY562 - Jun 22, 11:09 UTCJun 22, 12:49 UTC1h 40m
2026-06-22 MXY525 - Jun 22, 01:35 UTCJun 22, 02:54 UTC1h 20m
2026-06-21 MXY525 - Jun 21, 23:24 UTCJun 22, 00:20 UTC55m
2026-06-21 MXY524 - Jun 21, 20:50 UTCJun 21, 22:00 UTC1h 10m
2026-06-21 MXY524 - Jun 21, 18:04 UTCJun 21, 19:29 UTC1h 25m
2026-06-21 MXY537 RSW → BDL Jun 21, 14:05 UTCJun 21, 16:44 UTC2h 40m
2026-06-21 MXY536 BDL → RSW Jun 21, 10:04 UTCJun 21, 12:49 UTC2h 45m
2026-06-21 MXY523B MCO → BDL Jun 21, 03:49 UTCJun 21, 06:10 UTC2h 20m
2026-06-20 MXY847 PSM → MCO Jun 20, 23:39 UTCJun 21, 02:30 UTC2h 50m
2026-06-20 MXY846 MCO → PSM Jun 20, 19:44 UTCJun 20, 22:10 UTC2h 25m
2026-06-20 MXY739 - Jun 20, 14:05 UTCJun 20, 17:34 UTC3h 30m
2026-06-20 MXY738 - Jun 20, 10:09 UTCJun 20, 12:39 UTC2h 30m

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 N217BZ page for operator, model, and routing details .

Mode-S A1D3B4 frequently asked

What is Mode-S code A1D3B4?
A1D3B4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N217BZ.
Where is Mode-S A1D3B4 registered?
Mode-S code A1D3B4 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 A1D3B4 broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1D3B4, octal 50351664, decimal 10,605,492.
What flights does A1D3B4 operate?
Mode-S A1D3B4 has broadcast 20 distinct callsigns, including MXY843, MXY855, MXY854, MXY842, MXY823.