Apparatus

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sensors Mode-S transponder

AD39E3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N951RP · HUGHES 500 · operated by CITY OF RIVERSIDE, POLICE AVIATION UNIT

Hex
AD39E3
Octal
53234743
Decimal
11,352,547
Country
US
Tail
N951RP
Type
H500
No current signal · last broadcast 2d ago
Flights observed
116
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S AD39E3.

Country allocation

The ICAO 24-bit address AD39E3 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
N951RP - 116 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-27 N951RP RAL → RAL May 27, 22:05 UTCMay 27, 22:10 UTC5m
2026-05-27 N951RP RAL → RAL May 27, 21:50 UTCMay 27, 21:55 UTC5m
2026-05-27 N951RP RAL → RAL May 27, 19:55 UTCMay 27, 20:00 UTC5m
2026-05-23 N951RP RAL → RAL May 23, 20:55 UTCMay 23, 22:25 UTC1h 30m
2026-05-23 N951RP RAL → RAL May 23, 18:05 UTCMay 23, 19:40 UTC1h 36m
2026-05-23 N951RP RAL → RAL May 23, 05:50 UTCMay 23, 07:15 UTC1h 25m
2026-05-23 N951RP RAL → RAL May 23, 02:30 UTCMay 23, 04:10 UTC1h 40m
2026-05-22 N951RP RIR → RAL May 22, 22:55 UTCMay 22, 23:30 UTC35m
2026-05-22 N951RP RIR → RAL May 22, 19:00 UTCMay 22, 20:50 UTC1h 50m
2026-05-22 N951RP RAL → RAL May 22, 05:55 UTCMay 22, 07:10 UTC1h 15m
2026-05-22 N951RP RIR → RAL May 22, 02:30 UTCMay 22, 03:30 UTC1h 0m
2026-05-21 N951RP RAL → RAL May 21, 21:55 UTCMay 21, 22:40 UTC45m
2026-05-21 N951RP - May 21, 17:20 UTCMay 21, 18:55 UTC1h 35m
2026-05-20 N951RP RAL → RAL May 20, 07:10 UTCMay 20, 08:05 UTC55m
2026-05-20 N951RP RAL → RAL May 20, 03:25 UTCMay 20, 04:15 UTC50m
2026-05-19 N951RP RAL → RAL May 19, 00:10 UTCMay 19, 01:15 UTC1h 5m
2026-05-18 N951RP - May 18, 20:30 UTCMay 18, 21:10 UTC40m
2026-05-18 N951RP RAL → RAL May 18, 18:30 UTCMay 18, 19:35 UTC1h 5m
2026-05-18 N951RP RIR → RAL May 18, 02:55 UTCMay 18, 04:30 UTC1h 35m
2026-05-17 N951RP RAL → RAL May 17, 21:01 UTCMay 17, 22:01 UTC1h 0m
2026-05-17 N951RP RAL → RAL May 17, 06:40 UTCMay 17, 07:00 UTC20m
2026-05-17 N951RP - May 17, 04:20 UTCMay 17, 06:15 UTC1h 55m
2026-05-16 N951RP RAL → RAL May 16, 17:50 UTCMay 16, 18:30 UTC40m
2026-05-16 N951RP RAL → RAL May 16, 16:50 UTCMay 16, 17:45 UTC55m
2026-05-16 N951RP RAL → RAL May 16, 05:25 UTCMay 16, 06:31 UTC1h 6m
2026-05-16 N951RP RIR → RAL May 16, 01:45 UTCMay 16, 03:20 UTC1h 35m
2026-05-15 N951RP RIR → RAL May 15, 20:15 UTCMay 15, 21:45 UTC1h 30m
2026-05-15 N951RP - May 15, 15:35 UTCMay 15, 16:35 UTC1h 0m
2026-05-15 N951RP RAL → RAL May 15, 05:10 UTCMay 15, 06:35 UTC1h 25m
2026-05-15 N951RP RAL → RAL May 15, 01:20 UTCMay 15, 02:30 UTC1h 10m
2026-05-14 N951RP RAL → RAL May 14, 21:25 UTCMay 14, 22:50 UTC1h 25m
2026-05-14 N951RP - May 14, 17:10 UTCMay 14, 18:40 UTC1h 30m
2026-05-14 N951RP - May 14, 02:55 UTCMay 14, 04:50 UTC1h 55m
2026-05-14 N951RP RAL → RAL May 14, 01:00 UTCMay 14, 02:00 UTC1h 0m
2026-05-13 N951RP RAL → RAL May 13, 20:15 UTCMay 13, 21:45 UTC1h 30m
2026-05-13 N951RP - May 13, 17:25 UTCMay 13, 19:00 UTC1h 35m
2026-05-13 N951RP RAL → RAL May 13, 05:40 UTCMay 13, 06:45 UTC1h 5m
2026-05-13 N951RP - May 13, 03:05 UTCMay 13, 04:30 UTC1h 25m
2026-05-12 N951RP RAL → RAL May 12, 21:05 UTCMay 12, 22:31 UTC1h 25m
2026-05-12 N951RP RAL → RAL May 12, 03:40 UTCMay 12, 05:00 UTC1h 20m
2026-05-11 N951RP RAL → RAL May 11, 06:20 UTCMay 11, 07:35 UTC1h 15m
2026-05-11 N951RP - May 11, 01:15 UTCMay 11, 02:00 UTC45m
2026-05-10 N951RP RAL → RAL May 10, 17:59 UTCMay 10, 19:30 UTC1h 30m
2026-05-10 N951RP RAL → RAL May 10, 02:34 UTCMay 10, 04:34 UTC2h 0m
2026-05-10 N951RP RAL → RAL May 10, 00:39 UTCMay 10, 01:30 UTC50m
2026-05-09 N951RP - May 9, 20:15 UTCMay 9, 21:14 UTC1h 0m
2026-05-09 N951RP RAL → RAL May 9, 17:25 UTCMay 9, 18:45 UTC1h 20m
2026-05-09 N951RP RAL → RAL May 9, 07:40 UTCMay 9, 08:15 UTC35m
2026-05-09 N951RP RAL → RAL May 9, 05:15 UTCMay 9, 06:15 UTC1h 0m
2026-05-09 N951RP RAL → RAL May 9, 02:40 UTCMay 9, 04:00 UTC1h 20m

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 N951RP page for operator, model, and routing details .

Mode-S AD39E3 frequently asked

What is Mode-S code AD39E3?
AD39E3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N951RP.
Where is Mode-S AD39E3 registered?
Mode-S code AD39E3 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 AD39E3 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 AD39E3, octal 53234743, decimal 11,352,547.
What flights does AD39E3 operate?
Mode-S AD39E3 has broadcast 1 distinct callsign, including N951RP.