sensors Mode-S transponder
A35854
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N3142J · AIRBUS A220-300 · operated by JETBLUE AIRWAYS CORP
- Hex
- A35854
- Octal
- 50654124
- Decimal
- 10,704,980
- Country
- US
- Tail
- N3142J
- Type
- BCS3
- Flights observed
- 264
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address A35854 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| JBU2271 | JetBlue Airways | 5 | 2026-05-16 |
| JBU2230 | - | 5 | 2026-07-09 |
| JBU984 | JetBlue Airways | 4 | 2026-05-11 |
| JBU2229 | - | 4 | 2026-07-09 |
| JBU1596 | JetBlue Airways | 4 | 2026-06-08 |
| JBU1495 | JetBlue Airways | 4 | 2026-05-16 |
| JBU811 | JetBlue Airways | 3 | 2026-05-24 |
| JBU266 | JetBlue Airways | 3 | 2026-06-09 |
| JBU2626 | JetBlue Airways | 3 | 2026-05-11 |
| JBU259 | JetBlue Airways | 3 | 2026-05-15 |
| JBU2321 | - | 3 | 2026-07-02 |
| JBU2276 | JetBlue Airways | 3 | 2026-05-14 |
| JBU2275 | JetBlue Airways | 3 | 2026-05-14 |
| JBU2272 | JetBlue Airways | 3 | 2026-05-17 |
| JBU2119 | JetBlue Airways | 3 | 2026-05-07 |
| JBU1955 | JetBlue Airways | 3 | 2026-05-28 |
| JBU1906 | JetBlue Airways | 3 | 2026-05-06 |
| JBU1852 | JetBlue Airways | 3 | 2026-06-07 |
| JBU1716 | - | 3 | 2026-07-07 |
| JBU1595 | - | 3 | 2026-07-09 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-11 | JBU1351 | ACK → BOS | Jul 11, 22:49 UTC | Jul 12, 00:50 UTC | 2h 2m |
| 2026-07-11 | JBU1352 | BOS → ACK | Jul 11, 17:05 UTC | Jul 12, 00:50 UTC | 7h 46m |
| 2026-07-11 | JBU1883 | BOS → RDU | Jul 11, 11:05 UTC | Jul 12, 00:50 UTC | 13h 46m |
| 2026-07-10 | JBU1351 | ACK → BOS | Jul 10, 23:06 UTC | Jul 11, 23:00 UTC | 23h 55m |
| 2026-07-10 | JBU1352 | BOS → ACK | Jul 10, 16:21 UTC | Jul 11, 15:00 UTC | 22h 40m |
| 2026-07-10 | JBU484 | - | Jul 10, 13:35 UTC | Jul 10, 15:05 UTC | 1h 30m |
| 2026-07-09 | JBU1595 | - | Jul 9, 19:05 UTC | Jul 9, 20:50 UTC | 1h 45m |
| 2026-07-09 | JBU1595 | BOS → PUJ | Jul 9, 19:05 UTC | Jul 10, 18:40 UTC | 23h 36m |
| 2026-07-09 | JBU2230 | - | Jul 9, 14:35 UTC | Jul 9, 16:25 UTC | 1h 50m |
| 2026-07-09 | JBU2229 | - | Jul 9, 11:20 UTC | Jul 9, 13:20 UTC | 2h 0m |
| 2026-07-08 | JBU1595 | BOS → PUJ | Jul 8, 18:12 UTC | Jul 9, 17:00 UTC | 22h 49m |
| 2026-07-08 | JBU150 | SAV → BOS | Jul 8, 14:23 UTC | Jul 9, 13:00 UTC | 22h 38m |
| 2026-07-08 | JBU741 | JFK → SAV | Jul 8, 11:40 UTC | Jul 8, 13:15 UTC | 1h 35m |
| 2026-07-07 | JBU1716 | - | Jul 7, 18:40 UTC | Jul 7, 20:45 UTC | 2h 5m |
| 2026-07-07 | JBU1716 | VRB → JFK | Jul 7, 18:36 UTC | Jul 8, 17:00 UTC | 22h 25m |
| 2026-07-07 | JBU1715 | - | Jul 7, 14:35 UTC | Jul 7, 16:50 UTC | 2h 15m |
| 2026-07-07 | JBU1206 | ORD → JFK | Jul 7, 11:15 UTC | Jul 7, 12:55 UTC | 1h 40m |
| 2026-07-06 | JBU405 | JFK → ORD | Jul 6, 20:30 UTC | Jul 6, 22:25 UTC | 1h 55m |
| 2026-07-05 | JBU176 | - | Jul 5, 18:05 UTC | Jul 5, 20:50 UTC | 2h 45m |
| 2026-07-05 | JBU75 | JFK → MSY | Jul 5, 13:45 UTC | Jul 5, 16:20 UTC | 2h 35m |
| 2026-07-04 | JBU1497 | JFK → DEN | Jul 4, 16:11 UTC | Jul 5, 15:00 UTC | 22h 50m |
| 2026-07-04 | JBU98 | DEN → JFK | Jul 4, 08:37 UTC | Jul 5, 06:50 UTC | 22h 13m |
| 2026-07-03 | JBU1964 | JFK → HYA | Jul 3, 18:05 UTC | Jul 4, 17:00 UTC | 22h 56m |
| 2026-07-03 | JBU249 | BOS → SAV | Jul 3, 11:46 UTC | Jul 4, 11:00 UTC | 23h 15m |
| 2026-07-02 | JBU2321 | BOS → PBI | Jul 2, 19:52 UTC | Jul 3, 18:50 UTC | 22h 58m |
| 2026-07-02 | JBU1236 | DTW → BOS | Jul 2, 11:32 UTC | Jul 3, 11:00 UTC | 23h 29m |
| 2026-07-01 | JBU2954 | DCA → BOS | Jul 1, 23:21 UTC | Jul 2, 22:40 UTC | 23h 19m |
| 2026-07-01 | JBU2324 | MCO → DCA | Jul 1, 17:53 UTC | Jul 2, 15:40 UTC | 21h 47m |
| 2026-07-01 | JBU605 | MCO → SDQ | Jul 1, 10:15 UTC | Jul 2, 03:40 UTC | 17h 26m |
| 2026-07-01 | JBU1727 | EWR → MCO | Jul 1, 00:54 UTC | Jul 1, 19:55 UTC | 19h 2m |
| 2026-07-01 | JBU1727 | - | Jul 1, 00:55 UTC | Jul 1, 01:00 UTC | 5m |
| 2026-06-30 | JBU128 | MCO → EWR | Jun 30, 20:41 UTC | Jul 1, 19:00 UTC | 22h 20m |
| 2026-06-30 | JBU128 | MCO → EWR | Jun 30, 20:50 UTC | Jun 30, 23:30 UTC | 2h 40m |
| 2026-06-30 | JBU1923 | DCA → MCO | Jun 30, 15:15 UTC | Jun 30, 17:05 UTC | 1h 50m |
| 2026-06-29 | JBU2065 | BOS → RSW | Jun 29, 19:57 UTC | Jun 30, 17:00 UTC | 21h 3m |
| 2026-06-29 | JBU896 | - | Jun 29, 16:19 UTC | Jun 29, 16:59 UTC | 40m |
| 2026-06-29 | JBU1097 | BOS → ATL | Jun 29, 12:39 UTC | Jun 29, 14:44 UTC | 2h 5m |
| 2026-06-29 | JBU1097 | BOS → ATL | Jun 29, 12:35 UTC | Jun 30, 11:00 UTC | 22h 26m |
| 2026-06-28 | JBU1154 | PBI → JFK | Jun 28, 15:47 UTC | Jun 29, 15:00 UTC | 23h 13m |
| 2026-06-27 | JBU2473 | JFK → CHS | Jun 27, 22:02 UTC | Jun 28, 20:59 UTC | 22h 58m |
| 2026-06-27 | JBU737 | BDL → MCO | Jun 27, 11:23 UTC | Jun 28, 03:19 UTC | 15h 57m |
| 2026-06-27 | JBU338 | - | Jun 27, 01:24 UTC | Jun 27, 03:40 UTC | 2h 15m |
| 2026-06-27 | JBU338 | MCO → BDL | Jun 27, 01:22 UTC | Jun 27, 23:55 UTC | 22h 33m |
| 2026-06-26 | JBU2134 | - | Jun 26, 22:10 UTC | Jun 26, 23:09 UTC | 1h 0m |
| 2026-06-26 | JBU2134 | - | Jun 26, 20:34 UTC | Jun 26, 20:44 UTC | 10m |
| 2026-06-26 | JBU1033 | - | Jun 26, 18:44 UTC | Jun 26, 19:09 UTC | 25m |
| 2026-06-26 | JBU1033 | - | Jun 26, 16:35 UTC | Jun 26, 17:09 UTC | 35m |
| 2026-06-26 | JBU183 | BOS → RDU | Jun 26, 12:29 UTC | Jun 26, 14:44 UTC | 2h 15m |
| 2026-06-26 | JBU136 | PHX → JFK | Jun 26, 06:19 UTC | Jun 26, 10:30 UTC | 4h 10m |
| 2026-06-25 | JBU135 | - | Jun 25, 23:49 UTC | Jun 26, 04:50 UTC | 5h 0m |
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 N3142J page for operator, model, and routing details .