Apparatus

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sensors Mode-S transponder

A2DE96

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N284TX · operated by TRANSMEDICS INC

Hex
A2DE96
Octal
50557226
Decimal
10,673,814
Country
US
Tail
N284TX
Type
E55P
Broadcasting now · callsign YEL4 · 10,250 ft
Flights observed
132
Distinct callsigns
1
Country
US
Last broadcast
23m ago

Current position

A2DE96 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2DE96 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
YEL4 - 132 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 YEL4 - Jul 21, 20:25 UTCJul 21, 21:30 UTC1h 5m
2026-07-20 YEL4 - Jul 20, 23:25 UTCJul 21, 00:30 UTC1h 4m
2026-07-20 YEL4 - Jul 20, 17:55 UTCJul 20, 20:25 UTC2h 30m
2026-07-20 YEL4 - Jul 20, 04:25 UTCJul 20, 05:40 UTC1h 15m
2026-07-20 YEL4 - Jul 20, 02:40 UTCJul 20, 03:45 UTC1h 5m
2026-07-19 YEL4 - Jul 19, 20:30 UTCJul 19, 21:45 UTC1h 15m
2026-07-18 YEL4 - Jul 18, 08:30 UTCJul 18, 09:30 UTC1h 0m
2026-07-18 YEL4 - Jul 18, 02:50 UTCJul 18, 03:40 UTC50m
2026-07-17 YEL4 - Jul 17, 23:10 UTCJul 18, 00:55 UTC1h 45m
2026-07-17 YEL4 - Jul 17, 03:10 UTCJul 17, 05:10 UTC2h 0m
2026-07-16 YEL4 - Jul 16, 23:20 UTCJul 17, 00:30 UTC1h 10m
2026-07-13 YEL4 - Jul 13, 17:15 UTCJul 13, 19:25 UTC2h 10m
2026-07-13 YEL4 - Jul 13, 00:50 UTCJul 13, 03:05 UTC2h 15m
2026-07-12 YEL4 - Jul 12, 14:55 UTCJul 12, 16:45 UTC1h 50m
2026-07-10 YEL4 - Jul 10, 15:25 UTCJul 10, 15:45 UTC20m
2026-07-09 YEL4 - Jul 9, 01:10 UTCJul 9, 04:15 UTC3h 5m
2026-07-08 YEL4 ABQ → STP Jul 8, 17:45 UTCJul 8, 20:15 UTC2h 30m
2026-07-08 YEL4 - Jul 8, 01:05 UTCJul 8, 02:20 UTC1h 15m
2026-07-07 YEL4 - Jul 7, 22:25 UTCJul 7, 23:35 UTC1h 10m
2026-07-06 YEL4 - Jul 6, 22:45 UTCJul 7, 00:55 UTC2h 10m
2026-07-06 YEL4 ANC → PDX Jul 6, 11:50 UTCJul 6, 15:15 UTC3h 25m
2026-07-06 YEL4 BFI → ANC Jul 6, 06:45 UTCJul 6, 09:55 UTC3h 10m
2026-07-06 YEL4 - Jul 6, 04:05 UTCJul 6, 05:40 UTC1h 35m
2026-07-04 YEL4 - Jul 4, 12:10 UTCJul 4, 13:10 UTC1h 0m
2026-07-04 YEL4 - Jul 4, 07:55 UTCJul 4, 09:20 UTC1h 25m
2026-07-04 YEL4 - Jul 4, 05:05 UTCJul 4, 06:05 UTC1h 0m
2026-07-03 YEL4 STS → APA Jul 3, 11:15 UTCJul 3, 13:15 UTC2h 0m
2026-07-03 YEL4 - Jul 3, 05:15 UTCJul 3, 07:40 UTC2h 25m
2026-07-02 YEL4 - Jul 2, 10:45 UTCJul 2, 13:00 UTC2h 15m
2026-07-02 YEL4 - Jul 2, 06:51 UTCJul 2, 09:20 UTC2h 29m
2026-07-01 YEL4 - Jul 1, 22:55 UTCJul 2, 00:55 UTC2h 0m
2026-07-01 YEL4 - Jul 1, 17:05 UTCJul 1, 17:40 UTC35m
2026-06-26 YEL4 - Jun 26, 22:14 UTCJun 26, 23:00 UTC45m
2026-06-25 YEL4 - Jun 25, 22:59 UTCJun 26, 01:24 UTC2h 25m
2026-06-25 YEL4 - Jun 25, 07:45 UTCJun 25, 09:10 UTC1h 25m
2026-06-25 YEL4 - Jun 25, 05:25 UTCJun 25, 06:55 UTC1h 30m
2026-06-25 YEL4 - Jun 25, 01:59 UTCJun 25, 04:25 UTC2h 25m
2026-06-24 YEL4 - Jun 24, 14:50 UTCJun 24, 15:39 UTC50m
2026-06-24 YEL4 - Jun 24, 13:40 UTCJun 24, 14:09 UTC30m
2026-06-24 YEL4 - Jun 24, 11:20 UTCJun 24, 12:14 UTC55m
2026-06-22 YEL4 - Jun 22, 14:29 UTCJun 22, 15:29 UTC1h 0m
2026-06-22 YEL4 SLC → LGB Jun 22, 11:00 UTCJun 22, 12:34 UTC1h 35m
2026-06-22 YEL4 - Jun 22, 08:25 UTCJun 22, 09:34 UTC1h 10m
2026-06-20 YEL4 - Jun 20, 06:54 UTCJun 20, 09:29 UTC2h 35m
2026-06-19 YEL4 - Jun 19, 06:44 UTCJun 19, 09:40 UTC2h 55m
2026-06-19 YEL4 - Jun 19, 02:35 UTCJun 19, 04:00 UTC1h 25m
2026-06-18 YEL4 - Jun 18, 06:50 UTCJun 18, 07:50 UTC1h 0m
2026-06-17 YEL4 - Jun 17, 07:40 UTCJun 17, 10:50 UTC3h 10m
2026-06-17 YEL4 - Jun 17, 02:05 UTCJun 17, 04:00 UTC1h 55m
2026-06-16 YEL4 - Jun 16, 08:44 UTCJun 16, 10:49 UTC2h 5m

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 N284TX page for operator, model, and routing details .

Mode-S A2DE96 frequently asked

What is Mode-S code A2DE96?
A2DE96 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N284TX.
Where is Mode-S A2DE96 registered?
Mode-S code A2DE96 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 A2DE96 broadcasting right now?
Yes. Mode-S A2DE96 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2DE96, octal 50557226, decimal 10,673,814.
What flights does A2DE96 operate?
Mode-S A2DE96 has broadcast 1 distinct callsign, including YEL4.