sensors Mode-S transponder
A238DC
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N242QS · BOMBARDIER CL-600 Challenger · operated by NETJETS SALES INC, BANK OF AMERICA NA, BKRFLY LLC, JJ AIR LLC, HUND-MEJEAN MARTINA, MEJEAN BRUNO
- Hex
- A238DC
- Octal
- 50434334
- Decimal
- 10,631,388
- Country
- US
- Tail
- N242QS
- Type
- CL60
- Flights observed
- 62
- Distinct callsigns
- 2
- Country
- US
- Last broadcast
- 1h ago
Current position
Country allocation
The ICAO 24-bit address A238DC 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 2 distinct
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | EJA242 | - | Jul 14, 11:40 UTC | Jul 14, 12:10 UTC | 30m |
| 2026-07-14 | EJA242 | - | Jul 14, 02:20 UTC | Jul 14, 02:45 UTC | 25m |
| 2026-07-14 | EJA242 | IAD → TEB | Jul 14, 00:55 UTC | Jul 14, 02:15 UTC | 1h 20m |
| 2026-07-13 | EJA242 | - | Jul 13, 21:00 UTC | Jul 13, 21:45 UTC | 45m |
| 2026-07-13 | EJA242 | CAK → CMH | Jul 13, 17:55 UTC | Jul 13, 18:25 UTC | 30m |
| 2026-07-12 | EJA242 | DFW → CAK | Jul 12, 15:10 UTC | Jul 12, 17:20 UTC | 2h 10m |
| 2026-07-12 | EJA242 | - | Jul 12, 12:35 UTC | Jul 12, 13:25 UTC | 50m |
| 2026-07-11 | EJA242 | - | Jul 11, 20:05 UTC | Jul 11, 23:15 UTC | 3h 10m |
| 2026-07-11 | EJA242 | - | Jul 11, 18:00 UTC | Jul 11, 18:35 UTC | 35m |
| 2026-07-10 | EJA242 | - | Jul 10, 23:25 UTC | Jul 11, 00:10 UTC | 45m |
| 2026-07-10 | EJA242 | - | Jul 10, 20:50 UTC | Jul 10, 21:25 UTC | 35m |
| 2026-07-10 | EJA242 | - | Jul 10, 19:05 UTC | Jul 10, 19:50 UTC | 45m |
| 2026-07-06 | EJA242 | SBA → LAS | Jul 6, 21:45 UTC | Jul 6, 22:35 UTC | 50m |
| 2026-07-06 | EJA242 | - | Jul 6, 19:20 UTC | Jul 6, 20:15 UTC | 55m |
| 2026-07-06 | EJA242 | - | Jul 6, 15:35 UTC | Jul 6, 16:25 UTC | 50m |
| 2026-07-03 | EJA242 | - | Jul 3, 22:35 UTC | Jul 4, 00:25 UTC | 1h 50m |
| 2026-07-03 | EJA242 | - | Jul 3, 02:20 UTC | Jul 3, 07:25 UTC | 5h 5m |
| 2026-07-02 | EJA242 | SJC → EWR | Jul 2, 17:45 UTC | Jul 2, 22:40 UTC | 4h 55m |
| 2026-07-02 | EJA242 | - | Jul 2, 13:55 UTC | Jul 2, 15:45 UTC | 1h 50m |
| 2026-07-01 | EJA242 | - | Jul 1, 19:10 UTC | Jul 1, 20:55 UTC | 1h 45m |
| 2026-07-01 | EJA242 | - | Jul 1, 15:45 UTC | Jul 1, 16:15 UTC | 30m |
| 2026-06-29 | EJA242 | - | Jun 29, 23:44 UTC | Jun 29, 23:49 UTC | 5m |
| 2026-06-29 | EJA242 | - | Jun 29, 20:15 UTC | Jun 29, 23:05 UTC | 2h 50m |
| 2026-06-29 | EJA242 | - | Jun 29, 01:34 UTC | Jun 29, 04:39 UTC | 3h 5m |
| 2026-06-28 | EJA242 | - | Jun 28, 19:14 UTC | Jun 28, 20:25 UTC | 1h 10m |
| 2026-06-28 | EJA242 | - | Jun 28, 16:39 UTC | Jun 28, 17:50 UTC | 1h 10m |
| 2026-06-28 | EJA242 | - | Jun 28, 13:14 UTC | Jun 28, 14:45 UTC | 1h 30m |
| 2026-06-20 | EJA242 | - | Jun 20, 14:29 UTC | Jun 20, 19:55 UTC | 5h 25m |
| 2026-06-20 | EJA242 | - | Jun 20, 12:14 UTC | Jun 20, 12:50 UTC | 35m |
| 2026-06-16 | EJA242 | BZN → VNY | Jun 16, 20:40 UTC | Jun 16, 21:45 UTC | 1h 5m |
| 2026-06-16 | EJA242 | BZN → VNY | Jun 16, 18:45 UTC | Jun 16, 19:15 UTC | 30m |
| 2026-06-16 | EJA242 | BZN → VNY | Jun 16, 17:35 UTC | Jun 16, 18:05 UTC | 30m |
| 2026-06-16 | N242QS | - | Jun 16, 01:55 UTC | Jun 16, 02:24 UTC | 30m |
| 2026-06-15 | N242QS | - | Jun 15, 17:50 UTC | Jun 15, 20:30 UTC | 2h 40m |
| 2026-06-14 | EJA242 | BZN → VNY | Jun 14, 20:35 UTC | Jun 14, 22:35 UTC | 2h 0m |
| 2026-06-14 | EJA242 | BZN → VNY | Jun 14, 18:15 UTC | Jun 14, 19:30 UTC | 1h 15m |
| 2026-06-14 | EJA242 | BZN → VNY | Jun 14, 16:30 UTC | Jun 14, 16:50 UTC | 20m |
| 2026-05-24 | EJA242 | BZN → VNY | May 24, 14:55 UTC | May 24, 16:45 UTC | 1h 50m |
| 2026-05-18 | N242QS | - | May 18, 11:20 UTC | May 18, 17:45 UTC | 6h 25m |
| 2026-05-18 | N242QS | - | May 18, 09:00 UTC | May 18, 10:10 UTC | 1h 10m |
| 2026-05-15 | N242QS | BGR → BQH | May 15, 06:00 UTC | May 15, 11:50 UTC | 5h 50m |
| 2026-05-14 | EJA242 | BZN → VNY | May 14, 23:25 UTC | May 15, 04:50 UTC | 5h 25m |
| 2026-05-14 | EJA242 | BZN → VNY | May 14, 18:45 UTC | May 14, 22:05 UTC | 3h 20m |
| 2026-05-12 | EJA242 | BZN → VNY | May 12, 13:40 UTC | May 12, 14:15 UTC | 35m |
| 2026-04-28 | EJA242 | BZN → VNY | Apr 28, 18:25 UTC | Apr 28, 22:25 UTC | 4h 0m |
| 2026-04-28 | EJA242 | BZN → VNY | Apr 28, 17:20 UTC | Apr 28, 17:35 UTC | 15m |
| 2026-04-27 | EJA242 | BZN → VNY | Apr 27, 22:20 UTC | Apr 27, 23:05 UTC | 45m |
| 2026-04-26 | EJA242 | BZN → VNY | Apr 26, 17:05 UTC | Apr 26, 19:45 UTC | 2h 40m |
| 2026-04-24 | EJA242 | BZN → VNY | Apr 24, 20:25 UTC | Apr 24, 22:50 UTC | 2h 25m |
| 2026-04-23 | EJA242 | BZN → VNY | Apr 23, 18:30 UTC | Apr 23, 19:05 UTC | 35m |
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 N242QS page for operator, model, and routing details .