Apparatus

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sensors Mode-S transponder

A50BC5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N424PE · CESSNA 172 Skyhawk · operated by UNIVERSITY OF ALASKA ANCHORAGE

Hex
A50BC5
Octal
51205705
Decimal
10,816,453
Country
US
Tail
N424PE
Type
C172
No current signal · last broadcast 6h ago
Flights observed
220
Distinct callsigns
1
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A50BC5.

Country allocation

The ICAO 24-bit address A50BC5 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
N424PE - 220 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 N424PE - Jul 11, 21:25 UTCJul 11, 23:15 UTC1h 50m
2026-07-11 N424PE - Jul 11, 14:10 UTCJul 11, 15:20 UTC1h 10m
2026-07-11 N424PE - Jul 11, 02:35 UTCJul 11, 04:01 UTC1h 25m
2026-07-10 N424PE - Jul 10, 21:20 UTCJul 10, 22:40 UTC1h 20m
2026-07-09 N424PE - Jul 9, 21:50 UTCJul 9, 22:25 UTC35m
2026-07-09 N424PE - Jul 9, 19:15 UTCJul 9, 20:50 UTC1h 35m
2026-07-09 N424PE - Jul 9, 06:20 UTCJul 9, 07:10 UTC50m
2026-07-09 N424PE - Jul 9, 05:15 UTCJul 9, 06:05 UTC50m
2026-07-09 N424PE - Jul 9, 01:45 UTCJul 9, 03:10 UTC1h 25m
2026-07-08 N424PE - Jul 8, 23:05 UTCJul 9, 00:25 UTC1h 20m
2026-07-08 N424PE - Jul 8, 21:10 UTCJul 8, 22:05 UTC55m
2026-07-08 N424PE - Jul 8, 19:15 UTCJul 8, 20:20 UTC1h 5m
2026-07-08 N424PE - Jul 8, 16:50 UTCJul 8, 18:00 UTC1h 10m
2026-07-06 N424PE - Jul 6, 17:00 UTCJul 6, 18:10 UTC1h 10m
2026-07-05 N424PE FAI → MRI Jul 5, 23:30 UTCJul 6, 02:50 UTC3h 20m
2026-07-05 N424PE - Jul 5, 19:45 UTCJul 5, 22:10 UTC2h 25m
2026-07-02 N424PE - Jul 2, 23:30 UTCJul 3, 00:40 UTC1h 10m
2026-07-02 N424PE - Jul 2, 18:45 UTCJul 2, 19:50 UTC1h 5m
2026-07-02 N424PE - Jul 2, 14:25 UTCJul 2, 15:50 UTC1h 25m
2026-07-02 N424PE - Jul 2, 06:15 UTCJul 2, 08:20 UTC2h 5m
2026-07-02 N424PE - Jul 2, 04:50 UTCJul 2, 06:00 UTC1h 10m
2026-07-02 N424PE - Jul 2, 01:45 UTCJul 2, 02:35 UTC50m
2026-07-01 N424PE - Jul 1, 23:10 UTCJul 2, 00:25 UTC1h 15m
2026-07-01 N424PE - Jul 1, 18:55 UTCJul 1, 20:10 UTC1h 15m
2026-07-01 N424PE - Jul 1, 16:45 UTCJul 1, 17:55 UTC1h 10m
2026-07-01 N424PE - Jul 1, 07:55 UTCJul 1, 08:10 UTC15m
2026-07-01 N424PE - Jul 1, 06:40 UTCJul 1, 07:50 UTC1h 10m
2026-06-29 N424PE - Jun 29, 17:05 UTCJun 29, 18:14 UTC1h 10m
2026-06-27 N424PE - Jun 27, 19:49 UTCJun 27, 22:40 UTC2h 50m
2026-06-27 N424PE - Jun 27, 01:44 UTCJun 27, 02:55 UTC1h 10m
2026-06-26 N424PE - Jun 26, 23:34 UTCJun 27, 00:44 UTC1h 10m
2026-06-26 N424PE - Jun 26, 21:20 UTCJun 26, 22:49 UTC1h 30m
2026-06-26 N424PE - Jun 26, 14:29 UTCJun 26, 16:00 UTC1h 30m
2026-06-26 N424PE - Jun 26, 04:04 UTCJun 26, 05:19 UTC1h 15m
2026-06-26 N424PE - Jun 26, 02:44 UTCJun 26, 02:50 UTC5m
2026-06-26 N424PE - Jun 26, 02:09 UTCJun 26, 02:40 UTC30m
2026-06-25 N424PE - Jun 25, 21:05 UTCJun 25, 21:55 UTC50m
2026-06-25 N424PE - Jun 25, 14:09 UTCJun 25, 15:15 UTC1h 5m
2026-06-25 N424PE - Jun 25, 05:09 UTCJun 25, 07:00 UTC1h 50m
2026-06-25 N424PE - Jun 25, 01:30 UTCJun 25, 02:30 UTC1h 0m
2026-06-24 N424PE - Jun 24, 21:34 UTCJun 24, 22:45 UTC1h 10m
2026-06-23 N424PE - Jun 23, 22:29 UTCJun 23, 23:10 UTC40m
2026-06-23 N424PE - Jun 23, 21:20 UTCJun 23, 22:15 UTC55m
2026-06-23 N424PE - Jun 23, 19:10 UTCJun 23, 20:10 UTC1h 0m
2026-06-23 N424PE - Jun 23, 00:15 UTCJun 23, 01:59 UTC1h 45m
2026-06-22 N424PE - Jun 22, 18:49 UTCJun 22, 20:19 UTC1h 30m
2026-06-22 N424PE - Jun 22, 16:10 UTCJun 22, 16:45 UTC35m
2026-06-22 N424PE - Jun 22, 14:34 UTCJun 22, 15:40 UTC1h 5m
2026-06-20 N424PE - Jun 20, 14:14 UTCJun 20, 15:24 UTC1h 10m
2026-06-19 N424PE - Jun 19, 01:39 UTCJun 19, 02:50 UTC1h 10m

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 N424PE page for operator, model, and routing details .

Mode-S A50BC5 frequently asked

What is Mode-S code A50BC5?
A50BC5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N424PE.
Where is Mode-S A50BC5 registered?
Mode-S code A50BC5 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 A50BC5 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A50BC5, octal 51205705, decimal 10,816,453.
What flights does A50BC5 operate?
Mode-S A50BC5 has broadcast 1 distinct callsign, including N424PE.