sensors Mode-S transponder
A38019
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N3244J · operated by JETBLUE AIRWAYS CORP
- Hex
- A38019
- Octal
- 50700031
- Decimal
- 10,715,161
- Country
- US
- Tail
- N3244J
- Type
- BCS3
- Flights observed
- 157
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 5h ago
Last known position
Country allocation
The ICAO 24-bit address A38019 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 |
|---|---|---|---|
| JBU1813 | JetBlue Airways | 4 | 2026-04-24 |
| JBU1007 | JetBlue Airways | 4 | 2026-05-18 |
| JBU450 | JetBlue Airways | 3 | 2026-05-08 |
| JBU2468 | JetBlue Airways | 3 | 2026-05-08 |
| JBU2119 | JetBlue Airways | 3 | 2026-04-29 |
| JBU206 | JetBlue Airways | 3 | 2026-05-06 |
| JBU2020 | JetBlue Airways | 3 | 2026-04-30 |
| JBU1955 | JetBlue Airways | 3 | 2026-05-13 |
| JBU1822 | JetBlue Airways | 3 | 2026-05-15 |
| JBU1781 | - | 3 | 2026-04-17 |
| JBU1301 | JetBlue Airways | 3 | 2026-04-15 |
| JBU1286 | JetBlue Airways | 3 | 2026-05-03 |
| JBU1184 | - | 3 | 2026-04-13 |
| JBU1006 | JetBlue Airways | 3 | 2026-05-18 |
| JBU984 | JetBlue Airways | 2 | 2026-04-24 |
| JBU940 | JetBlue Airways | 2 | 2026-05-11 |
| JBU860 | JetBlue Airways | 2 | 2026-05-05 |
| JBU720 | JetBlue Airways | 2 | 2026-05-10 |
| JBU466 | JetBlue Airways | 2 | 2026-04-22 |
| JBU417 | JetBlue Airways | 2 | 2026-05-11 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | JBU2783 | BOS → RDU | May 29, 23:33 UTC | May 30, 01:05 UTC | 1h 32m |
| 2026-05-29 | JBU2768 | TPA → BQN | May 29, 02:27 UTC | May 30, 01:05 UTC | 22h 38m |
| 2026-05-28 | JBU817 | BOS → JFK | May 28, 23:13 UTC | May 29, 22:05 UTC | 22h 52m |
| 2026-05-28 | JBU641 | BOS → CLE | May 28, 17:49 UTC | May 29, 16:15 UTC | 22h 27m |
| 2026-05-27 | JBU1449 | FLL → STI | May 27, 22:02 UTC | May 28, 19:15 UTC | 21h 13m |
| 2026-05-27 | JBU1972 | FLL → LGA | May 27, 18:05 UTC | May 27, 18:15 UTC | 10m |
| 2026-05-27 | JBU1971 | LGA → FLL | May 27, 13:55 UTC | May 27, 16:45 UTC | 2h 50m |
| 2026-05-27 | JBU1971 | LGA → FLL | May 27, 13:52 UTC | May 28, 12:15 UTC | 22h 23m |
| 2026-05-26 | JBU1450 | STI → FLL | May 26, 20:24 UTC | May 27, 01:14 UTC | 4h 50m |
| 2026-05-26 | JBU69 | BOS → FLL | May 26, 15:35 UTC | May 26, 18:30 UTC | 2h 55m |
| 2026-05-25 | JBU283 | JFK → MCO | May 25, 22:19 UTC | May 26, 00:35 UTC | 2h 15m |
| 2026-05-25 | JBU283 | JFK → MCO | May 25, 22:16 UTC | May 26, 18:30 UTC | 20h 14m |
| 2026-05-20 | JBU2004 | RSW → BDL | May 20, 02:35 UTC | May 20, 03:10 UTC | 35m |
| 2026-05-19 | JBU2004 | RSW → BDL | May 19, 23:45 UTC | May 20, 00:05 UTC | 20m |
| 2026-05-19 | JBU2932 | PUJ → SJU | May 19, 21:55 UTC | May 19, 22:10 UTC | 15m |
| 2026-05-19 | JBU2931 | SJU → PUJ | May 19, 19:35 UTC | May 19, 19:50 UTC | 15m |
| 2026-05-19 | JBU1003 | BOS → JFK | May 19, 17:10 UTC | May 19, 17:30 UTC | 20m |
| 2026-05-18 | JBU1006 | PDX → JFK | May 18, 18:34 UTC | May 19, 17:30 UTC | 22h 56m |
| 2026-05-18 | JBU1007 | BOS → JFK | May 18, 14:55 UTC | May 19, 14:15 UTC | 23h 20m |
| 2026-05-18 | JBU2007 | BOS → BNA | May 18, 00:22 UTC | May 18, 23:55 UTC | 23h 33m |
| 2026-05-17 | JBU1281 | BOS → RIC | May 17, 12:32 UTC | May 18, 12:15 UTC | 23h 44m |
| 2026-05-17 | JBU1302 | PHX → BOS | May 17, 05:50 UTC | May 17, 06:15 UTC | 25m |
| 2026-05-16 | JBU1303 | BOS → PHX | May 16, 23:15 UTC | May 17, 04:40 UTC | 5h 25m |
| 2026-05-16 | JBU1303 | BOS → PHX | May 16, 23:14 UTC | May 17, 22:15 UTC | 23h 2m |
| 2026-05-16 | JBU2166 | MCO → BOS | May 16, 18:00 UTC | May 16, 20:50 UTC | 2h 50m |
| 2026-05-16 | JBU1315 | BOS → BUF | May 16, 13:41 UTC | May 16, 16:25 UTC | 2h 45m |
| 2026-05-15 | JBU2072 | BQN → FLL | May 15, 19:05 UTC | May 16, 18:15 UTC | 23h 11m |
| 2026-05-15 | JBU2071 | FLL → BQN | May 15, 15:58 UTC | May 16, 14:16 UTC | 22h 18m |
| 2026-05-15 | JBU1822 | BOS → PBI | May 15, 12:45 UTC | May 16, 12:16 UTC | 23h 31m |
| 2026-05-15 | JBU2823 | BOS → STI | May 15, 01:20 UTC | May 15, 02:55 UTC | 1h 35m |
| 2026-05-15 | JBU2823 | BOS → STI | May 15, 01:17 UTC | May 16, 00:15 UTC | 22h 58m |
| 2026-05-14 | JBU2722 | MSY → FLL | May 14, 20:05 UTC | May 14, 21:45 UTC | 1h 40m |
| 2026-05-14 | JBU1823 | JFK → LAX | May 14, 17:05 UTC | May 14, 18:50 UTC | 1h 45m |
| 2026-05-14 | JBU381 | BOS → RIC | May 14, 00:04 UTC | May 14, 21:45 UTC | 21h 42m |
| 2026-05-13 | JBU1354 | DCA → BOS | May 13, 21:05 UTC | May 14, 20:15 UTC | 23h 11m |
| 2026-05-13 | JBU1955 | BOS → DCA | May 13, 18:05 UTC | May 13, 19:30 UTC | 1h 25m |
| 2026-05-13 | JBU1955 | BOS → DCA | May 13, 18:04 UTC | May 14, 15:40 UTC | 21h 37m |
| 2026-05-13 | JBU2006 | MCO → BOS | May 13, 12:40 UTC | May 13, 14:45 UTC | 2h 5m |
| 2026-05-12 | JBU905 | JFK → ORD | May 12, 11:07 UTC | May 13, 02:15 UTC | 15h 9m |
| 2026-05-11 | JBU417 | JFK → MSP | May 11, 15:45 UTC | May 11, 16:15 UTC | 30m |
| 2026-05-11 | JBU417 | JFK → MSP | May 11, 15:41 UTC | May 12, 13:51 UTC | 22h 10m |
| 2026-05-11 | JBU940 | LGA → JAX | May 11, 13:10 UTC | May 11, 14:25 UTC | 1h 15m |
| 2026-05-11 | JBU940 | LGA → JAX | May 11, 13:06 UTC | May 12, 12:15 UTC | 23h 10m |
| 2026-05-10 | JBU318 | JFK → BOS | May 10, 13:19 UTC | May 10, 23:55 UTC | 10h 36m |
| 2026-05-10 | JBU720 | ATL → JFK | May 10, 10:24 UTC | May 10, 11:45 UTC | 1h 20m |
| 2026-05-10 | JBU720 | ATL → JFK | May 10, 10:19 UTC | May 10, 23:55 UTC | 13h 36m |
| 2026-05-10 | JBU1419 | BOS → JAX | May 10, 02:04 UTC | May 10, 03:35 UTC | 1h 30m |
| 2026-05-09 | JBU1360 | KIN → JFK | May 9, 14:40 UTC | May 9, 23:25 UTC | 8h 45m |
| 2026-05-09 | JBU217 | JFK → LGB | May 9, 11:45 UTC | May 9, 12:35 UTC | 50m |
| 2026-05-08 | JBU1484 | RDU → BOS | May 8, 23:35 UTC | May 9, 01:05 UTC | 1h 30m |
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 N3244J page for operator, model, and routing details .