sensors Mode-S transponder
A35949
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N3149J · AIRBUS A220-300 · operated by JETBLUE AIRWAYS CORP
- Hex
- A35949
- Octal
- 50654511
- Decimal
- 10,705,225
- Country
- US
- Tail
- N3149J
- Type
- BCS3
- Flights observed
- 159
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 1h ago
Current position
Country allocation
The ICAO 24-bit address A35949 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 |
|---|---|---|---|
| JBU1310 | JetBlue Airways | 5 | 2026-05-09 |
| JBU1070 | JetBlue Airways | 4 | 2026-04-17 |
| JBU654 | JetBlue Airways | 3 | 2026-04-13 |
| JBU415 | JetBlue Airways | 3 | 2026-04-28 |
| JBU321 | JetBlue Airways | 3 | 2026-05-13 |
| JBU2769 | JetBlue Airways | 3 | 2026-05-04 |
| JBU1822 | JetBlue Airways | 3 | 2026-05-16 |
| JBU1480 | - | 3 | 2026-04-13 |
| JBU1274 | JetBlue Airways | 3 | 2026-05-27 |
| JBU1268 | JetBlue Airways | 3 | 2026-05-18 |
| JBU109 | JetBlue Airways | 3 | 2026-05-09 |
| JBU993 | JetBlue Airways | 2 | 2026-05-21 |
| JBU954 | JetBlue Airways | 2 | 2026-05-07 |
| JBU66 | JetBlue Airways | 2 | 2026-05-25 |
| JBU65 | JetBlue Airways | 2 | 2026-05-25 |
| JBU551 | JetBlue Airways | 2 | 2026-05-22 |
| JBU307 | JetBlue Airways | 2 | 2026-05-29 |
| JBU2768 | JetBlue Airways | 2 | 2026-04-16 |
| JBU266 | JetBlue Airways | 2 | 2026-04-19 |
| JBU249 | JetBlue Airways | 2 | 2026-05-10 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | JBU307 | IAD → FLL | May 29, 10:05 UTC | May 30, 06:15 UTC | 20h 10m |
| 2026-05-28 | JBU1202 | JFK → BUF | May 28, 21:49 UTC | May 29, 20:15 UTC | 22h 27m |
| 2026-05-28 | JBU508 | JFK → PWM | May 28, 16:17 UTC | May 29, 14:15 UTC | 21h 58m |
| 2026-05-27 | JBU1274 | CHS → JFK | May 27, 23:40 UTC | May 28, 01:20 UTC | 1h 40m |
| 2026-05-27 | JBU1274 | CHS → JFK | May 27, 23:39 UTC | May 28, 22:15 UTC | 22h 36m |
| 2026-05-27 | JBU2473 | JFK → CHS | May 27, 20:20 UTC | May 27, 22:00 UTC | 1h 40m |
| 2026-05-27 | JBU906 | ORD → JFK | May 27, 16:35 UTC | May 27, 18:15 UTC | 1h 40m |
| 2026-05-26 | JBU341 | JFK → SAV | May 26, 20:19 UTC | May 27, 20:15 UTC | 23h 56m |
| 2026-05-26 | JBU307 | IAD → FLL | May 26, 11:23 UTC | May 27, 10:15 UTC | 22h 53m |
| 2026-05-26 | JBU308 | JFK → PWM | May 26, 02:46 UTC | May 27, 01:34 UTC | 22h 49m |
| 2026-05-25 | JBU244 | PBI → EWR | May 25, 16:11 UTC | May 26, 14:14 UTC | 22h 4m |
| 2026-05-25 | JBU66 | RSW → BOS | May 25, 07:39 UTC | May 26, 03:30 UTC | 19h 51m |
| 2026-05-25 | JBU65 | JFK → ABQ | May 25, 01:47 UTC | May 26, 00:14 UTC | 22h 28m |
| 2026-05-24 | JBU656 | MCO → SYR | May 24, 12:12 UTC | May 25, 10:15 UTC | 22h 4m |
| 2026-05-23 | JBU176 | MSY → JFK | May 23, 17:40 UTC | May 23, 20:15 UTC | 2h 36m |
| 2026-05-23 | JBU176 | MSY → JFK | May 23, 17:39 UTC | May 24, 16:15 UTC | 22h 36m |
| 2026-05-23 | JBU75 | JFK → MSY | May 23, 13:35 UTC | May 23, 16:25 UTC | 2h 50m |
| 2026-05-23 | JBU66 | RSW → BOS | May 23, 06:00 UTC | May 23, 09:40 UTC | 3h 40m |
| 2026-05-22 | JBU65 | JFK → ABQ | May 22, 23:40 UTC | May 23, 04:05 UTC | 4h 24m |
| 2026-05-22 | JBU1084 | MCO → ISP | May 22, 19:20 UTC | May 22, 21:25 UTC | 2h 5m |
| 2026-05-22 | JBU655 | SYR → MCO | May 22, 15:10 UTC | May 22, 17:45 UTC | 2h 35m |
| 2026-05-22 | JBU551 | BOS → MCO | May 22, 11:40 UTC | May 22, 13:50 UTC | 2h 10m |
| 2026-05-21 | JBU551 | BOS → MCO | May 21, 23:20 UTC | May 22, 02:00 UTC | 2h 40m |
| 2026-05-21 | JBU1554 | DCA → BOS | May 21, 20:30 UTC | May 21, 21:25 UTC | 55m |
| 2026-05-21 | JBU855 | JFK → PLS | May 21, 17:25 UTC | May 21, 18:45 UTC | 1h 20m |
| 2026-05-21 | JBU994 | DEN → BOS | May 21, 05:40 UTC | May 21, 06:15 UTC | 35m |
| 2026-05-21 | JBU993 | BOS → DEN | May 21, 00:00 UTC | May 21, 04:25 UTC | 4h 25m |
| 2026-05-20 | JBU993 | BOS → DEN | May 20, 23:59 UTC | May 21, 21:35 UTC | 21h 37m |
| 2026-05-20 | JBU1006 | PDX → JFK | May 20, 18:15 UTC | May 20, 20:20 UTC | 2h 5m |
| 2026-05-20 | JBU1007 | BOS → JFK | May 20, 14:40 UTC | May 20, 16:55 UTC | 2h 15m |
| 2026-05-20 | JBU1336 | DTW → BOS | May 20, 11:45 UTC | May 20, 13:15 UTC | 1h 30m |
| 2026-05-19 | JBU1153 | JFK → PBI | May 19, 10:47 UTC | May 20, 03:45 UTC | 16h 58m |
| 2026-05-18 | JBU1268 | LAX → BDL | May 18, 22:29 UTC | May 19, 17:10 UTC | 18h 41m |
| 2026-05-18 | JBU1269 | BOS → FLL | May 18, 17:30 UTC | May 19, 02:15 UTC | 8h 44m |
| 2026-05-17 | JBU1268 | LAX → BDL | May 17, 22:26 UTC | May 18, 18:45 UTC | 20h 19m |
| 2026-05-17 | JBU1268 | LAX → BDL | May 17, 17:30 UTC | May 18, 02:25 UTC | 8h 55m |
| 2026-05-17 | JBU1306 | IAD → JFK | May 17, 13:55 UTC | May 17, 15:31 UTC | 1h 35m |
| 2026-05-16 | JBU1612 | JFK → SDQ | May 16, 19:32 UTC | May 17, 18:10 UTC | 22h 39m |
| 2026-05-16 | JBU1611 | JFK → LAS | May 16, 15:40 UTC | May 16, 18:15 UTC | 2h 35m |
| 2026-05-16 | JBU1611 | JFK → LAS | May 16, 15:38 UTC | May 17, 14:15 UTC | 22h 38m |
| 2026-05-16 | JBU1822 | BOS → PBI | May 16, 12:11 UTC | May 16, 13:35 UTC | 1h 25m |
| 2026-05-15 | JBU379 | DCA → FLL | May 15, 11:35 UTC | May 16, 03:45 UTC | 16h 10m |
| 2026-05-14 | JBU2166 | MCO → BOS | May 14, 20:05 UTC | May 14, 20:15 UTC | 10m |
| 2026-05-14 | JBU1315 | BOS → BUF | May 14, 15:25 UTC | May 14, 18:25 UTC | 3h 0m |
| 2026-05-14 | JBU1315 | BOS → BUF | May 14, 15:25 UTC | May 15, 13:40 UTC | 22h 16m |
| 2026-05-14 | JBU2006 | MCO → BOS | May 14, 11:05 UTC | May 14, 13:20 UTC | 2h 15m |
| 2026-05-13 | JBU321 | BOS → PBI | May 13, 14:49 UTC | May 14, 14:15 UTC | 23h 27m |
| 2026-05-13 | JBU715 | BOS → BUF | May 13, 01:01 UTC | May 14, 00:15 UTC | 23h 15m |
| 2026-05-12 | JBU2754 | DCA → BOS | May 12, 22:45 UTC | May 13, 22:15 UTC | 23h 31m |
| 2026-05-12 | JBU1455 | BOS → DCA | May 12, 13:43 UTC | May 13, 12:15 UTC | 22h 33m |
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 N3149J page for operator, model, and routing details .