sensors Mode-S transponder
A349BE
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N3104J · AIRBUS A220-300 · operated by JETBLUE AIRWAYS CORP
- Hex
- A349BE
- Octal
- 50644676
- Decimal
- 10,701,246
- Country
- US
- Tail
- N3104J
- Type
- BCS3
- Flights observed
- 132
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 10d ago
Last known position
Country allocation
The ICAO 24-bit address A349BE 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 |
|---|---|---|---|
| JBU970 | JetBlue Airways | 7 | 2026-04-18 |
| JBU1155 | JetBlue Airways | 5 | 2026-05-10 |
| JBU259 | JetBlue Airways | 4 | 2026-04-17 |
| JBU2423 | JetBlue Airways | 4 | 2026-05-10 |
| JBU1955 | JetBlue Airways | 4 | 2026-05-14 |
| JBU160 | - | 4 | 2026-04-17 |
| JBU1088 | JetBlue Airways | 4 | 2026-04-16 |
| JBU1087 | JetBlue Airways | 4 | 2026-04-16 |
| JBU502 | JetBlue Airways | 3 | 2026-04-30 |
| JBU2065 | - | 3 | 2026-04-13 |
| JBU783 | JetBlue Airways | 2 | 2026-04-17 |
| JBU68 | JetBlue Airways | 2 | 2026-04-13 |
| JBU547 | JetBlue Airways | 2 | 2026-04-26 |
| JBU311 | JetBlue Airways | 2 | 2026-05-04 |
| JBU2625 | JetBlue Airways | 2 | 2026-04-17 |
| JBU2554 | JetBlue Airways | 2 | 2026-04-29 |
| JBU2405 | JetBlue Airways | 2 | 2026-05-07 |
| JBU2185 | JetBlue Airways | 2 | 2026-05-09 |
| JBU2066 | - | 2 | 2026-04-13 |
| JBU1855 | - | 2 | 2026-04-14 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-19 | JBU8450 | CHS → BOS | May 19, 20:15 UTC | May 19, 21:10 UTC | 55m |
| 2026-05-15 | JBU1823 | JFK → LAX | May 15, 20:04 UTC | May 16, 18:35 UTC | 22h 32m |
| 2026-05-15 | JBU2169 | BOS → FLL | May 15, 12:58 UTC | May 16, 02:10 UTC | 13h 12m |
| 2026-05-14 | JBU1955 | BOS → DCA | May 14, 19:49 UTC | May 15, 15:40 UTC | 19h 51m |
| 2026-05-14 | JBU1955 | BOS → DCA | May 14, 19:50 UTC | May 14, 21:15 UTC | 1h 25m |
| 2026-05-14 | JBU1310 | JAX → BOS | May 14, 14:10 UTC | May 14, 16:20 UTC | 2h 10m |
| 2026-05-14 | JBU109 | BOS → JAX | May 14, 10:35 UTC | May 14, 13:01 UTC | 2h 25m |
| 2026-05-14 | JBU1118 | JFK → BOS | May 14, 03:30 UTC | May 14, 04:20 UTC | 50m |
| 2026-05-13 | JBU8399 | BOS → JFK | May 13, 16:00 UTC | May 13, 18:30 UTC | 2h 30m |
| 2026-05-10 | JBU1301 | BOS → MSY | May 10, 22:26 UTC | May 11, 02:00 UTC | 3h 34m |
| 2026-05-10 | JBU2423 | DCA → MCO | May 10, 13:14 UTC | May 10, 13:30 UTC | 15m |
| 2026-05-10 | JBU1155 | BOS → DCA | May 10, 10:44 UTC | May 11, 02:00 UTC | 15h 16m |
| 2026-05-10 | JBU1155 | BOS → DCA | May 10, 10:45 UTC | May 10, 12:00 UTC | 1h 15m |
| 2026-05-09 | JBU2186 | PIT → BOS | May 9, 11:18 UTC | May 10, 00:09 UTC | 12h 52m |
| 2026-05-09 | JBU2185 | BOS → PIT | May 9, 01:25 UTC | May 9, 02:50 UTC | 1h 25m |
| 2026-05-09 | JBU2185 | BOS → PIT | May 9, 01:23 UTC | May 9, 23:30 UTC | 22h 7m |
| 2026-05-08 | JBU266 | DTW → BOS | May 8, 21:20 UTC | May 9, 00:05 UTC | 2h 45m |
| 2026-05-08 | JBU265 | SMF → LGB | May 8, 17:10 UTC | May 8, 20:10 UTC | 3h 0m |
| 2026-05-08 | JBU1300 | MSY → BOS | May 8, 11:09 UTC | May 8, 13:45 UTC | 2h 35m |
| 2026-05-07 | JBU2405 | SFO → LAX | May 7, 15:10 UTC | May 7, 17:50 UTC | 2h 40m |
| 2026-05-07 | JBU2405 | SFO → LAX | May 7, 15:08 UTC | May 8, 13:30 UTC | 22h 22m |
| 2026-05-07 | JBU2406 | FLL → EWR | May 7, 11:20 UTC | May 7, 13:35 UTC | 2h 15m |
| 2026-05-07 | JBU1131 | CHS → FLL | May 7, 00:35 UTC | May 7, 01:45 UTC | 1h 10m |
| 2026-05-06 | JBU1130 | FLL → CHS | May 6, 22:00 UTC | May 6, 23:20 UTC | 1h 20m |
| 2026-05-06 | JBU579 | DCA → FLL | May 6, 15:20 UTC | May 6, 17:20 UTC | 2h 0m |
| 2026-05-05 | JBU2184 | RDU → BOS | May 5, 20:29 UTC | May 6, 17:20 UTC | 20h 52m |
| 2026-05-05 | JBU2283 | BOS → RDU | May 5, 16:42 UTC | May 6, 15:30 UTC | 22h 49m |
| 2026-05-05 | JBU1286 | PIT → BOS | May 5, 14:10 UTC | May 5, 15:20 UTC | 1h 10m |
| 2026-05-05 | JBU1286 | PIT → BOS | May 5, 14:08 UTC | May 6, 13:30 UTC | 23h 23m |
| 2026-05-05 | JBU1585 | BOS → PIT | May 5, 11:25 UTC | May 5, 12:50 UTC | 1h 25m |
| 2026-05-04 | JBU392 | TPA → BOS | May 4, 22:35 UTC | May 5, 01:15 UTC | 2h 40m |
| 2026-05-04 | JBU391 | BOS → TPA | May 4, 18:30 UTC | May 4, 21:20 UTC | 2h 51m |
| 2026-05-04 | JBU312 | ORD → BOS | May 4, 15:00 UTC | May 4, 16:55 UTC | 1h 55m |
| 2026-05-04 | JBU311 | BOS → ORD | May 4, 11:05 UTC | May 4, 13:20 UTC | 2h 15m |
| 2026-05-03 | JBU797 | BOS → ATL | May 3, 14:20 UTC | May 4, 13:20 UTC | 23h 0m |
| 2026-05-02 | JBU2072 | BQN → FLL | May 2, 18:52 UTC | May 3, 17:29 UTC | 22h 38m |
| 2026-05-02 | JBU375 | PVD → MCO | May 2, 11:15 UTC | May 3, 02:30 UTC | 15h 16m |
| 2026-05-01 | JBU2736 | LAX → SFO | May 1, 22:08 UTC | May 2, 21:05 UTC | 22h 58m |
| 2026-05-01 | JBU1037 | BOS → DTW | May 1, 19:15 UTC | May 2, 16:15 UTC | 21h 1m |
| 2026-05-01 | JBU311 | BOS → ORD | May 1, 11:03 UTC | May 2, 02:55 UTC | 15h 53m |
| 2026-04-30 | JBU502 | JAX → BOS | Apr 30, 21:05 UTC | May 1, 01:10 UTC | 4h 5m |
| 2026-04-30 | JBU502 | JAX → BOS | Apr 30, 21:02 UTC | May 1, 19:30 UTC | 22h 29m |
| 2026-04-30 | JBU303 | IAD → LGB | Apr 30, 13:55 UTC | Apr 30, 19:30 UTC | 5h 35m |
| 2026-04-29 | JBU2554 | DCA → BOS | Apr 29, 21:23 UTC | Apr 30, 19:30 UTC | 22h 7m |
| 2026-04-29 | JBU2424 | MCO → DCA | Apr 29, 17:13 UTC | Apr 30, 15:30 UTC | 22h 17m |
| 2026-04-29 | JBU2423 | DCA → MCO | Apr 29, 13:20 UTC | Apr 29, 13:30 UTC | 10m |
| 2026-04-29 | JBU1155 | BOS → DCA | Apr 29, 10:30 UTC | Apr 29, 11:45 UTC | 1h 15m |
| 2026-04-29 | JBU1155 | BOS → DCA | Apr 29, 10:28 UTC | Apr 30, 02:55 UTC | 16h 27m |
| 2026-04-28 | JBU394 | DEN → BOS | Apr 28, 21:45 UTC | Apr 29, 00:59 UTC | 3h 15m |
| 2026-04-28 | JBU393 | BOS → DEN | Apr 28, 16:00 UTC | Apr 28, 20:15 UTC | 4h 15m |
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 N3104J page for operator, model, and routing details .