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sensors Mode-S transponder

A651EC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N506TJ · BELL 429 GlobalRanger · operated by MERCY FLIGHT INC

Hex
A651EC
Octal
51450754
Decimal
10,899,948
Country
US
Tail
N506TJ
Type
B429
No current signal · last broadcast 1d ago
Flights observed
88
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A651EC.

Country allocation

The ICAO 24-bit address A651EC 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
LN506TJ - 88 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 LN506TJ - Jul 13, 13:50 UTCJul 13, 14:05 UTC15m
2026-07-12 LN506TJ - Jul 12, 23:45 UTCJul 13, 00:01 UTC15m
2026-07-12 LN506TJ - Jul 12, 21:15 UTCJul 12, 23:10 UTC1h 55m
2026-07-12 LN506TJ - Jul 12, 20:25 UTCJul 12, 20:35 UTC10m
2026-07-10 LN506TJ - Jul 10, 23:10 UTCJul 10, 23:25 UTC15m
2026-07-10 LN506TJ - Jul 10, 21:25 UTCJul 10, 22:15 UTC50m
2026-07-10 LN506TJ - Jul 10, 20:30 UTCJul 10, 20:45 UTC15m
2026-07-10 LN506TJ - Jul 10, 19:40 UTCJul 10, 19:55 UTC15m
2026-07-09 LN506TJ - Jul 9, 19:40 UTCJul 9, 20:05 UTC25m
2026-07-09 LN506TJ - Jul 9, 16:25 UTCJul 9, 16:45 UTC20m
2026-07-07 LN506TJ - Jul 7, 19:30 UTCJul 7, 20:30 UTC1h 0m
2026-07-02 LN506TJ - Jul 2, 22:15 UTCJul 2, 22:40 UTC25m
2026-07-02 LN506TJ - Jul 2, 16:50 UTCJul 2, 17:40 UTC50m
2026-07-02 LN506TJ - Jul 2, 16:00 UTCJul 2, 16:20 UTC20m
2026-07-02 LN506TJ - Jul 2, 13:20 UTCJul 2, 13:40 UTC20m
2026-06-30 LN506TJ - Jun 30, 15:20 UTCJun 30, 15:30 UTC10m
2026-06-30 LN506TJ - Jun 30, 03:10 UTCJun 30, 03:30 UTC20m
2026-06-30 LN506TJ - Jun 30, 02:40 UTCJun 30, 03:05 UTC25m
2026-06-30 LN506TJ - Jun 30, 01:00 UTCJun 30, 02:10 UTC1h 10m
2026-06-28 LN506TJ - Jun 28, 23:14 UTCJun 28, 23:34 UTC20m
2026-06-28 LN506TJ - Jun 28, 13:49 UTCJun 28, 14:09 UTC20m
2026-06-27 LN506TJ - Jun 27, 23:14 UTCJun 27, 23:39 UTC25m
2026-06-27 LN506TJ - Jun 27, 13:20 UTCJun 27, 13:49 UTC30m
2026-06-27 LN506TJ - Jun 27, 04:34 UTCJun 27, 04:44 UTC10m
2026-06-26 LN506TJ - Jun 26, 22:14 UTCJun 26, 22:25 UTC10m
2026-06-26 LN506TJ - Jun 26, 20:50 UTCJun 26, 21:35 UTC45m
2026-06-25 LN506TJ - Jun 25, 07:00 UTCJun 25, 07:15 UTC15m
2026-06-25 LN506TJ - Jun 25, 05:55 UTCJun 25, 06:14 UTC20m
2026-06-25 LN506TJ - Jun 25, 04:20 UTCJun 25, 04:29 UTC10m
2026-06-25 LN506TJ - Jun 25, 01:54 UTCJun 25, 02:10 UTC15m
2026-06-25 LN506TJ - Jun 25, 00:29 UTCJun 25, 00:49 UTC20m
2026-06-24 LN506TJ - Jun 24, 02:45 UTCJun 24, 03:04 UTC20m
2026-06-24 LN506TJ - Jun 24, 01:24 UTCJun 24, 02:09 UTC45m
2026-06-23 LN506TJ - Jun 23, 20:10 UTCJun 23, 20:24 UTC15m
2026-06-23 LN506TJ - Jun 23, 18:25 UTCJun 23, 19:24 UTC1h 0m
2026-06-23 LN506TJ - Jun 23, 16:54 UTCJun 23, 17:09 UTC15m
2026-06-13 LN506TJ - Jun 13, 22:35 UTCJun 13, 22:50 UTC15m
2026-06-13 LN506TJ - Jun 13, 18:35 UTCJun 13, 19:00 UTC25m
2026-06-13 LN506TJ - Jun 13, 18:05 UTCJun 13, 18:10 UTC5m
2026-06-13 LN506TJ - Jun 13, 17:15 UTCJun 13, 17:40 UTC25m
2026-06-13 LN506TJ - Jun 13, 12:10 UTCJun 13, 12:30 UTC20m
2026-06-12 LN506TJ - Jun 12, 22:10 UTCJun 12, 22:35 UTC25m
2026-06-12 LN506TJ - Jun 12, 17:25 UTCJun 12, 17:45 UTC20m
2026-06-11 LN506TJ - Jun 11, 20:40 UTCJun 11, 20:55 UTC15m
2026-06-11 LN506TJ - Jun 11, 18:45 UTCJun 11, 19:20 UTC35m
2026-06-11 LN506TJ - Jun 11, 12:05 UTCJun 11, 12:30 UTC25m
2026-06-05 LN506TJ - Jun 5, 19:10 UTCJun 5, 20:00 UTC50m
2026-06-05 LN506TJ - Jun 5, 18:15 UTCJun 5, 18:30 UTC15m
2026-06-05 LN506TJ - Jun 5, 17:45 UTCJun 5, 18:00 UTC15m
2026-06-04 LN506TJ - Jun 4, 15:30 UTCJun 4, 15:40 UTC10m

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 N506TJ page for operator, model, and routing details .

Mode-S A651EC frequently asked

What is Mode-S code A651EC?
A651EC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N506TJ.
Where is Mode-S A651EC registered?
Mode-S code A651EC 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 A651EC broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A651EC, octal 51450754, decimal 10,899,948.
What flights does A651EC operate?
Mode-S A651EC has broadcast 1 distinct callsign, including LN506TJ.