Apparatus

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sensors Mode-S transponder

AC1F2D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N880PU · operated by TRUSTEES OF PURDUE UNIVERSITY

Hex
AC1F2D
Octal
53017455
Decimal
11,280,173
Country
US
Tail
N880PU
No current signal · last broadcast 33m ago
Flights observed
180
Distinct callsigns
1
Country
US
Last broadcast
33m ago

Last known position

Most recent position reported by Mode-S AC1F2D.

Country allocation

The ICAO 24-bit address AC1F2D 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
PDU80 - 179 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 PDU80 - Jul 14, 14:20 UTCJul 14, 14:50 UTC30m
2026-07-13 PDU80 - Jul 13, 18:55 UTCJul 13, 21:00 UTC2h 5m
2026-07-13 PDU80 LAF → LAF Jul 13, 15:05 UTCJul 13, 15:55 UTC50m
2026-07-09 PDU80 LAF → LAF Jul 9, 20:50 UTCJul 9, 22:15 UTC1h 25m
2026-07-09 PDU80 LAF → LAF Jul 9, 18:50 UTCJul 9, 19:15 UTC25m
2026-07-08 PDU80 LAF → LAF Jul 8, 13:50 UTCJul 8, 16:00 UTC2h 10m
2026-07-07 PDU80 LAF → LAF Jul 7, 21:50 UTCJul 8, 00:05 UTC2h 15m
2026-07-07 PDU80 - Jul 7, 16:15 UTCJul 7, 17:15 UTC1h 0m
2026-07-07 PDU80 - Jul 7, 13:15 UTCJul 7, 14:20 UTC1h 5m
2026-07-01 PDU80 LAF → LAF Jul 1, 15:45 UTCJul 1, 17:50 UTC2h 5m
2026-07-01 PDU80 LAF → LAF Jul 1, 02:20 UTCJul 1, 04:40 UTC2h 20m
2026-06-30 PDU80 LAF → LAF Jun 30, 12:45 UTCJun 30, 14:10 UTC1h 25m
2026-06-29 PDU80 LAF → LAF Jun 29, 20:40 UTCJun 29, 22:00 UTC1h 20m
2026-06-18 PDU80 LAF → LAF Jun 18, 21:55 UTCJun 18, 23:15 UTC1h 20m
2026-06-18 PDU80 LAF → LAF Jun 18, 19:45 UTCJun 18, 20:45 UTC1h 0m
2026-06-18 PDU80 - Jun 18, 17:15 UTCJun 18, 18:20 UTC1h 5m
2026-06-18 PDU80 LAF → LAF Jun 18, 15:05 UTCJun 18, 16:15 UTC1h 10m
2026-06-18 PDU80 LAF → LAF Jun 18, 12:50 UTCJun 18, 13:50 UTC1h 0m
2026-06-17 PDU80 LAF → LAF Jun 17, 14:20 UTCJun 17, 15:00 UTC40m
2026-06-16 PDU80 LAF → LAF Jun 16, 14:35 UTCJun 16, 15:15 UTC40m
2026-06-16 PDU80 LAF → LAF Jun 16, 12:45 UTCJun 16, 13:55 UTC1h 10m
2026-06-15 PDU80 LAF → LAF Jun 15, 20:20 UTCJun 15, 22:45 UTC2h 25m
2026-06-15 PDU80 LAF → LAF Jun 15, 17:54 UTCJun 15, 18:55 UTC1h 0m
2026-06-15 PDU80 LAF → LAF Jun 15, 15:50 UTCJun 15, 16:59 UTC1h 10m
2026-06-15 PDU80 LAF → LAF Jun 15, 14:05 UTCJun 15, 15:15 UTC1h 10m
2026-06-15 PDU80 LAF → LAF Jun 15, 12:05 UTCJun 15, 13:15 UTC1h 10m
2026-06-13 PDU80 - Jun 13, 21:05 UTCJun 13, 22:10 UTC1h 5m
2026-06-13 PDU80 - Jun 13, 19:55 UTCJun 13, 20:10 UTC15m
2026-06-13 PDU80 LAF → LAF Jun 13, 17:45 UTCJun 13, 18:55 UTC1h 10m
2026-06-13 PDU80 LAF → LAF Jun 13, 15:20 UTCJun 13, 17:15 UTC1h 55m
2026-06-13 PDU80 LAF → LAF Jun 13, 12:20 UTCJun 13, 14:20 UTC2h 0m
2026-06-12 PDU80 LAF → LAF Jun 12, 21:50 UTCJun 12, 23:50 UTC2h 0m
2026-06-12 PDU80 LAF → LAF Jun 12, 17:55 UTCJun 12, 19:15 UTC1h 20m
2026-06-12 PDU80 - Jun 12, 16:10 UTCJun 12, 17:10 UTC1h 0m
2026-06-12 PDU80 LAF → LAF Jun 12, 13:00 UTCJun 12, 14:15 UTC1h 15m
2026-06-11 PDU80 LAF → LAF Jun 11, 17:15 UTCJun 11, 18:55 UTC1h 40m
2026-06-11 PDU80 LAF → LAF Jun 11, 15:25 UTCJun 11, 16:15 UTC50m
2026-06-10 PDU80 LAF → LAF Jun 10, 18:55 UTCJun 10, 20:15 UTC1h 20m
2026-06-10 PDU80 - Jun 10, 17:40 UTCJun 10, 17:50 UTC10m
2026-06-10 PDU80 - Jun 10, 16:00 UTCJun 10, 16:20 UTC20m
2026-06-10 PDU80 LAF → LAF Jun 10, 02:15 UTCJun 10, 04:45 UTC2h 30m
2026-06-05 PDU80 LAF → LAF Jun 5, 14:55 UTCJun 5, 16:05 UTC1h 10m
2026-06-05 PDU80 - Jun 5, 04:15 UTCJun 5, 04:55 UTC40m
2026-06-05 PDU80 - Jun 5, 02:30 UTCJun 5, 03:05 UTC35m
2026-06-04 PDU80 LAF → LAF Jun 4, 22:10 UTCJun 5, 00:00 UTC1h 50m
2026-06-04 PDU80 LAF → LAF Jun 4, 19:10 UTCJun 4, 19:35 UTC25m
2026-06-04 PDU80 LAF → LAF Jun 4, 13:30 UTCJun 4, 14:15 UTC45m
2026-06-03 PDU80 - Jun 3, 19:55 UTCJun 3, 20:50 UTC55m
2026-06-03 PDU80 LAF → LAF Jun 3, 16:10 UTCJun 3, 17:30 UTC1h 20m
2026-06-03 PDU80 - Jun 3, 13:10 UTCJun 3, 14:00 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 N880PU page for operator, model, and routing details .

Mode-S AC1F2D frequently asked

What is Mode-S code AC1F2D?
AC1F2D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N880PU.
Where is Mode-S AC1F2D registered?
Mode-S code AC1F2D 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 AC1F2D broadcasting right now?
No active broadcast right now. Last signal was 33m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC1F2D, octal 53017455, decimal 11,280,173.
What flights does AC1F2D operate?
Mode-S AC1F2D has broadcast 1 distinct callsign, including PDU80.