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sensors Mode-S transponder

A89CDC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N654PA · CESSNA 172 Skyhawk · operated by PURDUE AVIATION LLC

Hex
A89CDC
Octal
52116334
Decimal
11,050,204
Country
US
Tail
N654PA
Type
C172
No current signal · last broadcast 6d ago
Flights observed
282
Distinct callsigns
1
Country
US
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S A89CDC.

Country allocation

The ICAO 24-bit address A89CDC 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
N654PA - 282 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N654PA LAF → LAF Jul 25, 18:50 UTCJul 25, 19:45 UTC55m
2026-07-25 N654PA LAF → LAF Jul 25, 17:15 UTCJul 25, 18:05 UTC50m
2026-07-25 N654PA LAF → LAF Jul 25, 14:25 UTCJul 25, 15:20 UTC55m
2026-07-24 N654PA - Jul 24, 21:45 UTCJul 24, 23:20 UTC1h 35m
2026-07-24 N654PA LAF → LAF Jul 24, 20:00 UTCJul 24, 21:00 UTC1h 0m
2026-07-24 N654PA LAF → LAF Jul 24, 18:10 UTCJul 24, 19:00 UTC50m
2026-07-24 N654PA LAF → LAF Jul 24, 12:55 UTCJul 24, 15:10 UTC2h 15m
2026-07-23 N654PA - Jul 23, 22:35 UTCJul 24, 01:05 UTC2h 30m
2026-07-23 N654PA LAF → LAF Jul 23, 20:55 UTCJul 23, 21:15 UTC20m
2026-07-23 N654PA - Jul 23, 16:35 UTCJul 23, 17:55 UTC1h 20m
2026-07-23 N654PA - Jul 23, 13:15 UTCJul 23, 14:05 UTC50m
2026-07-23 N654PA - Jul 23, 00:35 UTCJul 23, 01:35 UTC1h 0m
2026-07-22 N654PA - Jul 22, 22:45 UTCJul 23, 00:00 UTC1h 15m
2026-07-22 N654PA LAF → LAF Jul 22, 19:15 UTCJul 22, 20:25 UTC1h 10m
2026-07-22 N654PA - Jul 22, 17:40 UTCJul 22, 18:35 UTC55m
2026-07-22 N654PA - Jul 22, 14:10 UTCJul 22, 15:40 UTC1h 30m
2026-07-21 N654PA LAF → LAF Jul 21, 22:45 UTCJul 22, 00:00 UTC1h 15m
2026-07-21 N654PA LAF → LAF Jul 21, 19:20 UTCJul 21, 21:30 UTC2h 10m
2026-07-21 N654PA LAF → LAF Jul 21, 17:25 UTCJul 21, 18:30 UTC1h 5m
2026-07-21 N654PA LAF → LAF Jul 21, 15:10 UTCJul 21, 16:05 UTC55m
2026-07-21 N654PA LAF → LAF Jul 21, 12:25 UTCJul 21, 13:50 UTC1h 25m
2026-07-21 N654PA - Jul 21, 00:30 UTCJul 21, 01:10 UTC40m
2026-07-20 N654PA - Jul 20, 23:05 UTCJul 20, 23:35 UTC30m
2026-07-20 N654PA LAF → LAF Jul 20, 19:40 UTCJul 20, 21:50 UTC2h 10m
2026-07-20 N654PA - Jul 20, 16:05 UTCJul 20, 17:00 UTC55m
2026-07-18 N654PA LAF → LAF Jul 18, 19:10 UTCJul 18, 20:20 UTC1h 10m
2026-07-18 N654PA LAF → LAF Jul 18, 16:20 UTCJul 18, 18:20 UTC2h 0m
2026-07-18 N654PA LAF → LAF Jul 18, 13:55 UTCJul 18, 15:10 UTC1h 15m
2026-07-17 N654PA LAF → LAF Jul 17, 16:15 UTCJul 17, 18:05 UTC1h 50m
2026-07-17 N654PA LAF → LAF Jul 17, 13:20 UTCJul 17, 15:25 UTC2h 5m
2026-07-16 N654PA LAF → LAF Jul 16, 19:14 UTCJul 16, 20:00 UTC45m
2026-07-15 N654PA LAF → LAF Jul 15, 20:55 UTCJul 15, 21:00 UTC5m
2026-07-15 N654PA LAF → LAF Jul 15, 19:45 UTCJul 15, 20:10 UTC25m
2026-07-15 N654PA LAF → LAF Jul 15, 19:00 UTCJul 15, 19:40 UTC40m
2026-07-15 N654PA LAF → LAF Jul 15, 16:35 UTCJul 15, 18:20 UTC1h 45m
2026-07-15 N654PA - Jul 15, 14:50 UTCJul 15, 15:10 UTC20m
2026-07-15 N654PA - Jul 15, 13:20 UTCJul 15, 14:40 UTC1h 20m
2026-07-14 N654PA LAF → LAF Jul 14, 23:25 UTCJul 15, 00:40 UTC1h 15m
2026-07-14 N654PA LAF → LAF Jul 14, 19:30 UTCJul 14, 21:25 UTC1h 55m
2026-07-14 N654PA - Jul 14, 17:20 UTCJul 14, 17:35 UTC15m
2026-07-14 N654PA - Jul 14, 16:10 UTCJul 14, 16:35 UTC25m
2026-07-14 N654PA - Jul 14, 13:10 UTCJul 14, 15:20 UTC2h 10m
2026-07-14 N654PA - Jul 14, 02:20 UTCJul 14, 04:15 UTC1h 55m
2026-07-13 N654PA - Jul 13, 22:40 UTCJul 14, 00:35 UTC1h 55m
2026-07-13 N654PA - Jul 13, 20:35 UTCJul 13, 21:00 UTC25m
2026-07-13 N654PA - Jul 13, 16:15 UTCJul 13, 18:20 UTC2h 5m
2026-07-13 N654PA LAF → LAF Jul 13, 02:30 UTCJul 13, 04:50 UTC2h 20m
2026-07-12 N654PA LAF → LAF Jul 12, 22:35 UTCJul 12, 23:55 UTC1h 20m
2026-07-12 N654PA - Jul 12, 21:00 UTCJul 12, 21:55 UTC55m
2026-07-12 N654PA LAF → LAF Jul 12, 17:10 UTCJul 12, 18:35 UTC1h 25m

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 N654PA page for operator, model, and routing details .

Mode-S A89CDC frequently asked

What is Mode-S code A89CDC?
A89CDC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N654PA.
Where is Mode-S A89CDC registered?
Mode-S code A89CDC 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 A89CDC broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A89CDC, octal 52116334, decimal 11,050,204.
What flights does A89CDC operate?
Mode-S A89CDC has broadcast 1 distinct callsign, including N654PA.