Apparatus

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sensors Mode-S transponder

A70538

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N551XJ · BOMBARDIER BD-100 Challenger 300 · operated by TVPX AIRCRAFT SOLUTIONS INC TRUSTEE

Hex
A70538
Octal
51602470
Decimal
10,945,848
Country
US
Tail
N551XJ
Type
CL30
No current signal · last broadcast Jul 26, 20:05 UTC
Flights observed
98
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 20:05 UTC

Last known position

Most recent position reported by Mode-S A70538.

Country allocation

The ICAO 24-bit address A70538 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
VJA551 - 98 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VJA551 - Jul 26, 14:40 UTCJul 26, 20:00 UTC5h 20m
2026-07-25 VJA551 - Jul 25, 18:20 UTCJul 25, 18:30 UTC10m
2026-07-25 VJA551 - Jul 25, 15:40 UTCJul 25, 17:25 UTC1h 45m
2026-07-25 VJA551 - Jul 25, 11:35 UTCJul 25, 13:15 UTC1h 40m
2026-07-24 VJA551 - Jul 24, 13:15 UTCJul 24, 16:30 UTC3h 15m
2026-07-24 VJA551 - Jul 24, 10:10 UTCJul 24, 11:50 UTC1h 40m
2026-07-23 VJA551 - Jul 23, 17:15 UTCJul 23, 18:10 UTC55m
2026-07-23 VJA551 APA → MSP Jul 23, 13:55 UTCJul 23, 15:30 UTC1h 35m
2026-07-22 VJA551 - Jul 22, 20:25 UTCJul 22, 22:45 UTC2h 20m
2026-07-22 VJA551 LGA → DPA Jul 22, 13:10 UTCJul 22, 15:10 UTC2h 0m
2026-07-21 VJA551 - Jul 21, 17:50 UTCJul 21, 18:15 UTC25m
2026-07-21 VJA551 - Jul 21, 13:30 UTCJul 21, 16:05 UTC2h 35m
2026-07-20 VJA551 - Jul 20, 18:00 UTCJul 21, 00:05 UTC6h 4m
2026-07-20 VJA551 TEB → IAD Jul 20, 15:55 UTCJul 20, 16:40 UTC45m
2026-07-20 VJA551 - Jul 20, 12:55 UTCJul 20, 13:25 UTC30m
2026-07-19 VJA551 - Jul 19, 19:55 UTCJul 19, 22:45 UTC2h 50m
2026-07-19 VJA551 TEB → MIA Jul 19, 15:40 UTCJul 19, 18:15 UTC2h 35m
2026-07-19 VJA551 - Jul 19, 13:05 UTCJul 19, 13:35 UTC30m
2026-07-18 VJA551 - Jul 18, 15:35 UTCJul 18, 17:15 UTC1h 40m
2026-07-17 VJA551 - Jul 17, 20:44 UTCJul 17, 22:35 UTC1h 50m
2026-07-17 VJA551 - Jul 17, 18:05 UTCJul 17, 19:40 UTC1h 35m
2026-07-17 VJA551 - Jul 17, 01:35 UTCJul 17, 01:59 UTC25m
2026-07-17 VJA551 - Jul 17, 00:04 UTCJul 17, 00:40 UTC35m
2026-07-16 VJA551 FTY → TEB Jul 16, 01:20 UTCJul 16, 03:15 UTC1h 55m
2026-07-15 VJA551 - Jul 15, 14:25 UTCJul 15, 16:30 UTC2h 5m
2026-07-14 VJA551 SJC → RBD Jul 14, 13:30 UTCJul 14, 17:00 UTC3h 30m
2026-07-13 VJA551 - Jul 13, 20:30 UTCJul 13, 21:20 UTC50m
2026-07-13 VJA551 - Jul 13, 14:30 UTCJul 13, 19:25 UTC4h 55m
2026-07-12 VJA551 - Jul 12, 23:25 UTCJul 13, 00:20 UTC55m
2026-07-12 VJA551 - Jul 12, 17:40 UTCJul 12, 22:20 UTC4h 40m
2026-07-11 VJA551 - Jul 11, 13:00 UTCJul 11, 20:05 UTC7h 5m
2026-07-10 VJA551 - Jul 10, 20:20 UTCJul 10, 22:25 UTC2h 5m
2026-07-10 VJA551 - Jul 10, 18:05 UTCJul 10, 18:50 UTC45m
2026-07-09 VJA551 VNY → MDW Jul 9, 21:00 UTCJul 10, 00:30 UTC3h 30m
2026-07-09 VJA551 VNY → VNY Jul 9, 18:20 UTCJul 9, 19:00 UTC40m
2026-05-21 VJA551 - May 21, 20:50 UTCMay 21, 21:45 UTC55m
2026-05-21 VJA551 - May 21, 18:45 UTCMay 21, 19:55 UTC1h 10m
2026-05-21 VJA551 - May 21, 16:55 UTCMay 21, 18:00 UTC1h 5m
2026-05-20 VJA551 IAD → SJC May 20, 21:10 UTCMay 21, 02:50 UTC5h 40m
2026-05-19 VJA551 BOS → IAD May 19, 23:05 UTCMay 20, 00:40 UTC1h 35m
2026-05-19 VJA551 - May 19, 19:50 UTCMay 19, 20:15 UTC25m
2026-05-18 VJA551 - May 18, 12:10 UTCMay 18, 14:50 UTC2h 40m
2026-05-17 VJA551 - May 17, 15:45 UTCMay 17, 17:20 UTC1h 35m
2026-05-17 VJA551 - May 17, 13:40 UTCMay 17, 14:40 UTC1h 0m
2026-05-16 VJA551 - May 16, 20:20 UTCMay 16, 21:05 UTC45m
2026-05-16 VJA551 VNY → FTY May 16, 15:50 UTCMay 16, 19:35 UTC3h 45m
2026-05-15 VJA551 - May 15, 21:15 UTCMay 15, 22:05 UTC50m
2026-05-15 VJA551 - May 15, 01:55 UTCMay 15, 03:00 UTC1h 5m
2026-05-14 VJA551 - May 14, 21:20 UTCMay 14, 22:15 UTC55m
2026-05-13 VJA551 - May 13, 18:15 UTCMay 13, 20:25 UTC2h 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 N551XJ page for operator, model, and routing details .

Mode-S A70538 frequently asked

What is Mode-S code A70538?
A70538 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N551XJ.
Where is Mode-S A70538 registered?
Mode-S code A70538 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 A70538 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A70538, octal 51602470, decimal 10,945,848.
What flights does A70538 operate?
Mode-S A70538 has broadcast 1 distinct callsign, including VJA551.