Apparatus

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sensors Mode-S transponder

A2CB97

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N27990 · PIPER PA-31-300/310/325/350/425 · operated by AZTEC WORLDWIDE AIRLINES INC

Hex
A2CB97
Octal
50545627
Decimal
10,668,951
Country
US
Tail
N27990
Type
PA31
No current signal · last broadcast 7h ago
Flights observed
149
Distinct callsigns
20
Country
US
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S A2CB97.

Country allocation

The ICAO 24-bit address A2CB97 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
AZY421 - 25 2026-07-17
AZY422 - 16 2026-07-17
AZY424 - 14 2026-07-16
AZY322 - 13 2026-07-07
AZY423 - 12 2026-07-17
AZY321 - 11 2026-07-07
AZY723 - 3 2026-07-16
AZY522 Aztec Worldwide Airlines 3 2026-07-16
AZY4026 - 3 2026-06-19
AZY4025 - 3 2026-06-19
AZY9022 - 2 2026-06-26
AZY9021 - 2 2026-06-26
AZY822 Aztec Worldwide Airlines 2 2026-05-21
AZY7021 - 2 2026-07-12
AZY622 Aztec Worldwide Airlines 2 2026-06-14
AZY5023 - 2 2026-06-24
AZY426 Aztec Worldwide Airlines 2 2026-07-17
AZY3024 - 2 2026-07-01
AZY3023 - 2 2026-07-01
AZY2024 - 2 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 AZY426 ELH → FLL Jul 17, 21:05 UTCJul 17, 21:25 UTC20m
2026-07-17 AZY423 - Jul 17, 17:15 UTCJul 17, 17:30 UTC15m
2026-07-17 AZY422 - Jul 17, 15:00 UTCJul 17, 15:20 UTC20m
2026-07-17 AZY421 - Jul 17, 12:19 UTCJul 17, 12:50 UTC30m
2026-07-16 AZY522 GHC → FLL Jul 16, 21:45 UTCJul 16, 22:00 UTC15m
2026-07-16 AZY723 - Jul 16, 17:20 UTCJul 16, 17:49 UTC30m
2026-07-16 AZY424 - Jul 16, 15:45 UTCJul 16, 16:09 UTC25m
2026-07-16 AZY421 - Jul 16, 12:25 UTCJul 16, 12:44 UTC20m
2026-07-15 AZY422 - Jul 15, 17:40 UTCJul 15, 18:00 UTC20m
2026-07-15 AZY423 - Jul 15, 14:25 UTCJul 15, 14:50 UTC25m
2026-07-12 AZY7021 - Jul 12, 12:50 UTCJul 12, 13:05 UTC15m
2026-07-11 AZY2022 - Jul 11, 14:35 UTCJul 11, 15:00 UTC25m
2026-07-11 AZY2021 - Jul 11, 13:10 UTCJul 11, 13:20 UTC10m
2026-07-07 AZY2024 - Jul 7, 18:25 UTCJul 7, 18:45 UTC20m
2026-07-07 AZY2023 - Jul 7, 17:05 UTCJul 7, 17:20 UTC15m
2026-07-07 AZY322 - Jul 7, 15:30 UTCJul 7, 15:50 UTC20m
2026-07-07 AZY321 - Jul 7, 13:15 UTCJul 7, 13:30 UTC15m
2026-07-06 AZY322 - Jul 6, 15:40 UTCJul 6, 16:05 UTC25m
2026-07-06 AZY321 - Jul 6, 13:20 UTCJul 6, 13:45 UTC25m
2026-07-05 AZY3026 - Jul 5, 18:40 UTCJul 5, 18:55 UTC15m
2026-07-05 AZY3030 - Jul 5, 14:45 UTCJul 5, 15:00 UTC15m
2026-07-05 AZY3029 - Jul 5, 12:20 UTCJul 5, 12:35 UTC15m
2026-07-03 AZY422 - Jul 3, 15:00 UTCJul 3, 15:30 UTC30m
2026-07-03 AZY421 - Jul 3, 12:20 UTCJul 3, 12:45 UTC25m
2026-07-02 AZY7022 - Jul 2, 17:05 UTCJul 2, 17:25 UTC20m
2026-07-02 AZY2021 FLL → FPO Jul 2, 12:25 UTCJul 2, 12:40 UTC15m
2026-07-01 AZY3024 - Jul 1, 14:50 UTCJul 1, 15:10 UTC20m
2026-07-01 AZY3023 - Jul 1, 12:25 UTCJul 1, 12:45 UTC20m
2026-06-30 AZY422 - Jun 30, 14:50 UTCJun 30, 15:15 UTC25m
2026-06-30 AZY421 - Jun 30, 12:15 UTCJun 30, 12:45 UTC30m
2026-06-29 AZY522 - Jun 29, 20:54 UTCJun 29, 21:19 UTC25m
2026-06-29 AZY521 - Jun 29, 18:44 UTCJun 29, 19:09 UTC25m
2026-06-29 AZY5024 - Jun 29, 17:05 UTCJun 29, 17:30 UTC25m
2026-06-29 AZY421 - Jun 29, 13:19 UTCJun 29, 13:44 UTC25m
2026-06-28 AZY326 - Jun 28, 21:04 UTCJun 28, 21:34 UTC30m
2026-06-28 AZY723 - Jun 28, 16:39 UTCJun 28, 17:10 UTC30m
2026-06-28 AZY422 - Jun 28, 14:30 UTCJun 28, 14:59 UTC30m
2026-06-28 AZY421 - Jun 28, 11:50 UTCJun 28, 12:09 UTC20m
2026-06-27 AZY424 - Jun 27, 19:45 UTCJun 27, 20:04 UTC20m
2026-06-27 AZY423 - Jun 27, 16:59 UTCJun 27, 17:25 UTC25m
2026-06-27 AZY422 - Jun 27, 15:05 UTCJun 27, 15:34 UTC30m
2026-06-27 AZY421 - Jun 27, 12:04 UTCJun 27, 12:25 UTC20m
2026-06-26 AZY7024 - Jun 26, 21:04 UTCJun 26, 21:35 UTC30m
2026-06-26 AZY7023 - Jun 26, 17:40 UTCJun 26, 18:09 UTC30m
2026-06-26 AZY9022 - Jun 26, 16:09 UTCJun 26, 16:35 UTC25m
2026-06-26 AZY9021 - Jun 26, 14:09 UTCJun 26, 14:39 UTC30m
2026-06-25 AZY2024 - Jun 25, 19:05 UTCJun 25, 19:20 UTC15m
2026-06-25 AZY7021 - Jun 25, 14:24 UTCJun 25, 14:55 UTC30m
2026-06-24 AZY5023 - Jun 24, 20:49 UTCJun 24, 21:14 UTC25m
2026-06-24 AZY5023 - Jun 24, 19:15 UTCJun 24, 19:34 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 N27990 page for operator, model, and routing details .

Mode-S A2CB97 frequently asked

What is Mode-S code A2CB97?
A2CB97 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N27990.
Where is Mode-S A2CB97 registered?
Mode-S code A2CB97 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 A2CB97 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2CB97, octal 50545627, decimal 10,668,951.
What flights does A2CB97 operate?
Mode-S A2CB97 has broadcast 20 distinct callsigns, including AZY421, AZY422, AZY424, AZY322, AZY423.