Apparatus

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sensors Mode-S transponder

A801A5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N615DJ · operated by ERA LEASING LLC

Hex
A801A5
Octal
52000645
Decimal
11,010,469
Country
US
Tail
N615DJ
Type
A139
No current signal · last broadcast 2d ago
Flights observed
88
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A801A5.

Country allocation

The ICAO 24-bit address A801A5 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
BTZ615 - 88 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BTZ615 - Jul 14, 22:55 UTCJul 14, 23:05 UTC10m
2026-07-14 BTZ615 - Jul 14, 20:40 UTCJul 14, 21:00 UTC20m
2026-07-14 BTZ615 - Jul 14, 17:45 UTCJul 14, 18:10 UTC25m
2026-07-10 BTZ615 - Jul 10, 18:45 UTCJul 10, 18:55 UTC10m
2026-07-09 BTZ615 - Jul 9, 13:35 UTCJul 9, 13:45 UTC10m
2026-07-04 BTZ615 - Jul 4, 16:05 UTCJul 4, 16:15 UTC10m
2026-06-30 BTZ615 - Jun 30, 20:25 UTCJun 30, 21:25 UTC1h 0m
2026-06-23 BTZ615 - Jun 23, 21:45 UTCJun 23, 21:59 UTC15m
2026-06-23 BTZ615 - Jun 23, 21:05 UTCJun 23, 21:14 UTC10m
2026-06-23 BTZ615 - Jun 23, 13:15 UTCJun 23, 13:29 UTC15m
2026-06-23 BTZ615 - Jun 23, 12:09 UTCJun 23, 12:20 UTC10m
2026-06-22 BTZ615 - Jun 22, 21:05 UTCJun 22, 21:14 UTC10m
2026-06-22 BTZ615 - Jun 22, 18:54 UTCJun 22, 19:09 UTC15m
2026-06-22 BTZ615 - Jun 22, 16:45 UTCJun 22, 17:04 UTC20m
2026-06-22 BTZ615 - Jun 22, 12:30 UTCJun 22, 12:44 UTC15m
2026-06-21 BTZ615 - Jun 21, 12:24 UTCJun 21, 12:55 UTC30m
2026-06-20 BTZ615 - Jun 20, 11:25 UTCJun 20, 11:40 UTC15m
2026-06-19 BTZ615 - Jun 19, 11:59 UTCJun 19, 12:19 UTC20m
2026-06-10 BTZ615 - Jun 10, 13:20 UTCJun 10, 13:40 UTC20m
2026-06-08 BTZ615 - Jun 8, 17:50 UTCJun 8, 18:40 UTC50m
2026-06-04 BTZ615 - Jun 4, 11:45 UTCJun 4, 12:10 UTC25m
2026-06-03 BTZ615 - Jun 3, 11:15 UTCJun 3, 11:25 UTC10m
2026-06-02 BTZ615 - Jun 2, 12:05 UTCJun 2, 12:15 UTC10m
2026-06-01 BTZ615 - Jun 1, 17:45 UTCJun 1, 17:55 UTC10m
2026-05-29 BTZ615 - May 29, 10:45 UTCMay 29, 10:55 UTC10m
2026-05-28 BTZ615 - May 28, 14:25 UTCMay 28, 14:50 UTC25m
2026-05-28 BTZ615 - May 28, 13:05 UTCMay 28, 13:25 UTC20m
2026-05-28 BTZ615 - May 28, 11:15 UTCMay 28, 11:40 UTC25m
2026-05-27 BTZ615 - May 27, 14:05 UTCMay 27, 14:25 UTC20m
2026-05-27 BTZ615 - May 27, 11:20 UTCMay 27, 11:45 UTC25m
2026-05-25 BTZ615 - May 25, 16:55 UTCMay 25, 17:05 UTC10m
2026-05-22 BTZ615 - May 22, 11:35 UTCMay 22, 11:55 UTC20m
2026-05-21 BTZ615 - May 21, 13:40 UTCMay 21, 13:55 UTC15m
2026-05-21 BTZ615 - May 21, 11:50 UTCMay 21, 12:15 UTC25m
2026-05-19 BTZ615 - May 19, 14:50 UTCMay 19, 15:15 UTC25m
2026-05-19 BTZ615 - May 19, 13:45 UTCMay 19, 14:00 UTC15m
2026-05-19 BTZ615 - May 19, 11:50 UTCMay 19, 12:15 UTC25m
2026-05-18 BTZ615 - May 18, 11:15 UTCMay 18, 11:50 UTC35m
2026-05-17 BTZ615 - May 17, 16:50 UTCMay 17, 17:10 UTC20m
2026-05-16 BTZ615 - May 16, 11:25 UTCMay 16, 11:41 UTC15m
2026-05-14 BTZ615 - May 14, 14:40 UTCMay 14, 14:50 UTC10m
2026-05-14 BTZ615 - May 14, 13:35 UTCMay 14, 13:45 UTC10m
2026-05-14 BTZ615 - May 14, 11:40 UTCMay 14, 12:00 UTC20m
2026-05-13 BTZ615 - May 13, 11:30 UTCMay 13, 11:50 UTC20m
2026-05-12 BTZ615 - May 12, 11:35 UTCMay 12, 12:00 UTC25m
2026-05-08 BTZ615 - May 8, 11:09 UTCMay 8, 11:30 UTC20m
2026-05-07 BTZ615 - May 7, 14:20 UTCMay 7, 14:40 UTC20m
2026-05-07 BTZ615 - May 7, 13:20 UTCMay 7, 13:40 UTC20m
2026-05-07 BTZ615 - May 7, 11:30 UTCMay 7, 11:50 UTC20m
2026-05-06 BTZ615 - May 6, 13:10 UTCMay 6, 13:30 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 N615DJ page for operator, model, and routing details .

Mode-S A801A5 frequently asked

What is Mode-S code A801A5?
A801A5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N615DJ.
Where is Mode-S A801A5 registered?
Mode-S code A801A5 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 A801A5 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 A801A5, octal 52000645, decimal 11,010,469.
What flights does A801A5 operate?
Mode-S A801A5 has broadcast 1 distinct callsign, including BTZ615.