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
- 156
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 1h 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 |
| JBU984 | JetBlue Airways | 4 | 2026-05-11 |
| JBU1495 | JetBlue Airways | 4 | 2026-05-16 |
| JBU811 | JetBlue Airways | 3 | 2026-05-24 |
| JBU2626 | JetBlue Airways | 3 | 2026-05-11 |
| JBU259 | JetBlue Airways | 3 | 2026-05-15 |
| 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 |
| JBU1017 | JetBlue Airways | 3 | 2026-04-30 |
| JBU955 | JetBlue Airways | 2 | 2026-05-30 |
| JBU554 | JetBlue Airways | 2 | 2026-05-28 |
| JBU54 | JetBlue Airways | 2 | 2026-04-16 |
| JBU502 | JetBlue Airways | 2 | 2026-04-28 |
| JBU401 | JetBlue Airways | 2 | 2026-05-28 |
| JBU396 | JetBlue Airways | 2 | 2026-05-22 |
| JBU2725 | JetBlue Airways | 2 | 2026-04-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | JBU955 | BOS → DCA | May 30, 02:09 UTC | May 30, 11:00 UTC | 8h 52m |
| 2026-05-30 | JBU955 | BOS → DCA | May 30, 02:10 UTC | May 30, 02:50 UTC | 40m |
| 2026-05-29 | JBU1528 | POP → JFK | May 29, 22:50 UTC | May 29, 23:40 UTC | 50m |
| 2026-05-29 | JBU627 | JFK → POP | May 29, 15:15 UTC | May 29, 15:35 UTC | 20m |
| 2026-05-29 | JBU286 | LGB → LAS | May 29, 12:15 UTC | May 29, 13:25 UTC | 1h 10m |
| 2026-05-28 | JBU401 | BOS → MSY | May 28, 14:21 UTC | May 29, 13:00 UTC | 22h 39m |
| 2026-05-28 | JBU554 | DCA → BOS | May 28, 11:32 UTC | May 29, 02:20 UTC | 14h 48m |
| 2026-05-28 | JBU1955 | BOS → DCA | May 28, 01:54 UTC | May 29, 01:00 UTC | 23h 6m |
| 2026-05-27 | JBU1183 | JFK → MCO | May 27, 16:14 UTC | May 28, 15:00 UTC | 22h 46m |
| 2026-05-26 | JBU1852 | CUN → JFK | May 26, 19:45 UTC | May 26, 22:59 UTC | 3h 15m |
| 2026-05-26 | JBU1852 | CUN → JFK | May 26, 19:44 UTC | May 27, 17:50 UTC | 22h 6m |
| 2026-05-26 | JBU1851 | JFK → CUN | May 26, 14:20 UTC | May 26, 18:14 UTC | 3h 55m |
| 2026-05-25 | JBU1554 | DCA → BOS | May 25, 20:41 UTC | May 26, 18:19 UTC | 21h 39m |
| 2026-05-25 | JBU1883 | BOS → RDU | May 25, 11:17 UTC | May 26, 11:00 UTC | 23h 43m |
| 2026-05-25 | JBU1012 | ORD → BOS | May 25, 02:15 UTC | May 26, 01:00 UTC | 22h 45m |
| 2026-05-24 | JBU811 | BOS → ORD | May 24, 23:00 UTC | May 24, 23:46 UTC | 46m |
| 2026-05-24 | JBU811 | BOS → ORD | May 24, 21:40 UTC | May 24, 21:50 UTC | 10m |
| 2026-05-24 | JBU811 | BOS → ORD | May 24, 21:35 UTC | May 25, 20:59 UTC | 23h 25m |
| 2026-05-24 | JBU1290 | ILM → BOS | May 24, 18:40 UTC | May 24, 20:00 UTC | 1h 20m |
| 2026-05-24 | JBU1293 | BOS → ILM | May 24, 15:15 UTC | May 24, 16:50 UTC | 1h 35m |
| 2026-05-24 | JBU1440 | LGB → SFO | May 24, 11:10 UTC | May 24, 13:50 UTC | 2h 40m |
| 2026-05-23 | JBU1441 | SFO → LGB | May 23, 19:55 UTC | May 23, 23:10 UTC | 3h 15m |
| 2026-05-23 | JBU909 | BOS → NAS | May 23, 11:05 UTC | May 23, 18:10 UTC | 7h 5m |
| 2026-05-22 | JBU396 | PUJ → BOS | May 22, 22:05 UTC | May 23, 03:00 UTC | 4h 54m |
| 2026-05-22 | JBU396 | PUJ → BOS | May 22, 22:02 UTC | May 23, 21:00 UTC | 22h 59m |
| 2026-05-22 | JBU95 | BOS → PUJ | May 22, 14:20 UTC | May 22, 20:15 UTC | 5h 55m |
| 2026-05-22 | JBU756 | AUA → JFK | May 22, 10:20 UTC | May 22, 13:00 UTC | 2h 40m |
| 2026-05-21 | JBU554 | DCA → BOS | May 21, 12:14 UTC | May 22, 11:00 UTC | 22h 46m |
| 2026-05-21 | JBU2055 | BOS → DCA | May 21, 00:50 UTC | May 21, 02:10 UTC | 1h 20m |
| 2026-05-21 | JBU2055 | BOS → DCA | May 21, 00:49 UTC | May 21, 23:00 UTC | 22h 12m |
| 2026-05-20 | JBU450 | PHL → BOS | May 20, 16:30 UTC | May 20, 18:35 UTC | 2h 5m |
| 2026-05-20 | JBU | BOS → SAV | May 20, 13:05 UTC | May 20, 15:15 UTC | 2h 10m |
| 2026-05-19 | JBU2230 | MKE → BOS | May 19, 21:50 UTC | May 19, 23:55 UTC | 2h 5m |
| 2026-05-19 | JBU2229 | BOS → MKE | May 19, 18:45 UTC | May 19, 20:50 UTC | 2h 5m |
| 2026-05-19 | JBU312 | ORD → BOS | May 19, 15:00 UTC | May 19, 16:50 UTC | 1h 50m |
| 2026-05-19 | JBU905 | JFK → ORD | May 19, 11:10 UTC | May 19, 13:10 UTC | 2h 0m |
| 2026-05-18 | JBU203 | BOS → BDA | May 18, 13:59 UTC | May 19, 13:00 UTC | 23h 1m |
| 2026-05-18 | JBU2186 | PIT → BOS | May 18, 11:22 UTC | May 18, 23:30 UTC | 12h 8m |
| 2026-05-17 | JBU2072 | BQN → FLL | May 17, 20:25 UTC | May 17, 20:55 UTC | 30m |
| 2026-05-17 | JBU2072 | BQN → FLL | May 17, 18:21 UTC | May 18, 15:50 UTC | 21h 30m |
| 2026-05-17 | JBU2071 | FLL → BQN | May 17, 15:20 UTC | May 17, 15:50 UTC | 30m |
| 2026-05-17 | JBU2272 | AUS → FLL | May 17, 11:20 UTC | May 17, 13:31 UTC | 2h 10m |
| 2026-05-16 | JBU1495 | FLL → CUN | May 16, 15:59 UTC | May 17, 13:31 UTC | 21h 32m |
| 2026-05-16 | JBU2271 | FLL → AUS | May 16, 00:20 UTC | May 16, 03:00 UTC | 2h 40m |
| 2026-05-16 | JBU2271 | FLL → AUS | May 16, 00:17 UTC | May 16, 20:45 UTC | 20h 29m |
| 2026-05-15 | JBU259 | FLL → LGB | May 15, 19:30 UTC | May 15, 22:25 UTC | 2h 55m |
| 2026-05-14 | JBU2275 | DCA → BOS | May 14, 22:10 UTC | May 15, 00:30 UTC | 2h 20m |
| 2026-05-14 | JBU2275 | DCA → BOS | May 14, 22:08 UTC | May 15, 21:00 UTC | 22h 52m |
| 2026-05-14 | JBU2276 | FLL → PHL | May 14, 18:15 UTC | May 14, 20:40 UTC | 2h 25m |
| 2026-05-14 | JBU1822 | BOS → PBI | May 14, 12:15 UTC | May 14, 13:50 UTC | 1h 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 N3142J page for operator, model, and routing details .