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sensors Mode-S transponder

ABDB54

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N863PU · operated by TRUSTEES OF PURDUE UNIVERSITY

Hex
ABDB54
Octal
52755524
Decimal
11,262,804
Country
US
Tail
N863PU
Type
P28A
No current signal · last broadcast Jul 24, 21:00 UTC
Flights observed
171
Distinct callsigns
1
Country
US
Last broadcast
Jul 24, 21:00 UTC

Last known position

Most recent position reported by Mode-S ABDB54.

Country allocation

The ICAO 24-bit address ABDB54 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
PDU63 - 171 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 PDU63 LAF → LAF Jul 24, 20:05 UTCJul 24, 21:00 UTC55m
2026-07-24 PDU63 - Jul 24, 18:00 UTCJul 24, 19:15 UTC1h 15m
2026-07-24 PDU63 - Jul 24, 15:20 UTCJul 24, 16:35 UTC1h 15m
2026-07-24 PDU63 LAF → LAF Jul 24, 14:10 UTCJul 24, 14:30 UTC20m
2026-07-24 PDU63 LAF → LAF Jul 24, 12:00 UTCJul 24, 13:20 UTC1h 20m
2026-07-24 PDU63 - Jul 24, 02:00 UTCJul 24, 03:20 UTC1h 20m
2026-07-23 PDU63 - Jul 23, 22:20 UTCJul 23, 23:50 UTC1h 30m
2026-07-23 PDU63 LAF → LAF Jul 23, 18:55 UTCJul 23, 20:10 UTC1h 15m
2026-07-23 PDU63 LAF → LAF Jul 23, 16:40 UTCJul 23, 17:40 UTC1h 0m
2026-07-23 PDU63 LAF → LAF Jul 23, 14:55 UTCJul 23, 15:15 UTC20m
2026-07-23 PDU63 LAF → LAF Jul 23, 12:15 UTCJul 23, 12:45 UTC30m
2026-07-22 PDU63 - Jul 22, 22:00 UTCJul 22, 23:35 UTC1h 35m
2026-07-22 PDU63 - Jul 22, 20:05 UTCJul 22, 21:15 UTC1h 10m
2026-07-22 PDU63 - Jul 22, 16:55 UTCJul 22, 17:15 UTC20m
2026-07-22 PDU63 - Jul 22, 15:55 UTCJul 22, 16:05 UTC10m
2026-07-22 PDU63 LAF → LAF Jul 22, 13:10 UTCJul 22, 14:35 UTC1h 25m
2026-07-22 PDU63 LAF → LAF Jul 22, 01:50 UTCJul 22, 04:05 UTC2h 15m
2026-07-21 PDU63 LAF → LAF Jul 21, 21:45 UTCJul 21, 23:25 UTC1h 40m
2026-07-21 PDU63 LAF → LAF Jul 21, 18:35 UTCJul 21, 20:10 UTC1h 35m
2026-07-20 PDU63 LAF → LAF Jul 20, 20:50 UTCJul 20, 22:00 UTC1h 10m
2026-07-20 PDU63 LAF → LAF Jul 20, 19:00 UTCJul 20, 20:05 UTC1h 5m
2026-07-20 PDU63 - Jul 20, 16:55 UTCJul 20, 17:55 UTC1h 0m
2026-07-20 PDU63 LAF → LAF Jul 20, 12:55 UTCJul 20, 14:15 UTC1h 20m
2026-07-18 PDU63 LAF → LAF Jul 18, 15:10 UTCJul 18, 16:50 UTC1h 40m
2026-07-16 PDU63 LAF → LAF Jul 16, 22:00 UTCJul 16, 23:05 UTC1h 5m
2026-07-16 PDU63 LAF → LAF Jul 16, 17:00 UTCJul 16, 17:54 UTC55m
2026-07-15 PDU63 LAF → LAF Jul 15, 19:05 UTCJul 15, 20:15 UTC1h 10m
2026-07-15 PDU63 LAF → LAF Jul 15, 17:05 UTCJul 15, 18:05 UTC1h 0m
2026-07-15 PDU63 LAF → LAF Jul 15, 15:15 UTCJul 15, 16:00 UTC45m
2026-07-15 PDU63 LAF → LAF Jul 15, 02:20 UTCJul 15, 04:00 UTC1h 40m
2026-07-14 PDU63 LAF → LAF Jul 14, 18:55 UTCJul 14, 20:10 UTC1h 15m
2026-07-14 PDU63 - Jul 14, 15:40 UTCJul 14, 16:40 UTC1h 0m
2026-07-13 PDU63 - Jul 13, 20:10 UTCJul 13, 21:25 UTC1h 15m
2026-07-13 PDU63 LAF → LAF Jul 13, 13:40 UTCJul 13, 14:40 UTC1h 0m
2026-07-09 PDU63 LAF → LAF Jul 9, 14:10 UTCJul 9, 15:05 UTC55m
2026-07-08 PDU63 LAF → LAF Jul 8, 21:45 UTCJul 8, 23:50 UTC2h 5m
2026-07-08 PDU63 LAF → LAF Jul 8, 18:40 UTCJul 8, 20:00 UTC1h 20m
2026-07-08 PDU63 LAF → LAF Jul 8, 16:45 UTCJul 8, 17:45 UTC1h 0m
2026-07-08 PDU63 LAF → LAF Jul 8, 12:50 UTCJul 8, 14:05 UTC1h 15m
2026-07-08 PDU63 - Jul 8, 02:25 UTCJul 8, 04:05 UTC1h 40m
2026-07-07 PDU63 - Jul 7, 20:55 UTCJul 7, 22:10 UTC1h 15m
2026-07-01 PDU63 LAF → LAF Jul 1, 18:15 UTCJul 1, 19:15 UTC1h 0m
2026-06-30 PDU63 LAF → LAF Jun 30, 15:50 UTCJun 30, 17:00 UTC1h 10m
2026-06-30 PDU63 LAF → LAF Jun 30, 13:40 UTCJun 30, 14:15 UTC35m
2026-06-30 PDU63 LAF → LAF Jun 30, 11:40 UTCJun 30, 12:00 UTC20m
2026-06-29 PDU63 LAF → LAF Jun 29, 18:55 UTCJun 29, 20:04 UTC1h 10m
2026-06-29 PDU63 LAF → LAF Jun 29, 16:39 UTCJun 29, 17:55 UTC1h 15m
2026-06-29 PDU63 LAF → LAF Jun 29, 15:04 UTCJun 29, 15:30 UTC25m
2026-06-29 PDU63 LAF → LAF Jun 29, 12:00 UTCJun 29, 13:24 UTC1h 25m
2026-06-27 PDU63 - Jun 27, 19:09 UTCJun 27, 19:59 UTC50m

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 N863PU page for operator, model, and routing details .

Mode-S ABDB54 frequently asked

What is Mode-S code ABDB54?
ABDB54 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N863PU.
Where is Mode-S ABDB54 registered?
Mode-S code ABDB54 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 ABDB54 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 21:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABDB54, octal 52755524, decimal 11,262,804.
What flights does ABDB54 operate?
Mode-S ABDB54 has broadcast 1 distinct callsign, including PDU63.