sensors Mode-S transponder
A3514F
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N3125J · operated by JETBLUE AIRWAYS CORP
- Hex
- A3514F
- Octal
- 50650517
- Decimal
- 10,703,183
- Country
- US
- Tail
- N3125J
- Type
- BCS3
- Flights observed
- 319
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address A3514F 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 |
|---|---|---|---|
| JBU855 | JetBlue Airways | 20 | 2026-06-07 |
| JBU546 | JetBlue Airways | 12 | 2026-05-19 |
| JBU547 | JetBlue Airways | 11 | 2026-05-14 |
| JBU1056 | JetBlue Airways | 11 | 2026-05-20 |
| JBU2523 | JetBlue Airways | 5 | 2026-05-03 |
| JBU1500 | - | 5 | 2026-07-09 |
| JBU95 | - | 4 | 2026-06-23 |
| JBU782 | - | 4 | 2026-06-29 |
| JBU311 | - | 4 | 2026-06-19 |
| JBU1109 | JetBlue Airways | 4 | 2026-06-09 |
| JBU932 | JetBlue Airways | 3 | 2026-07-07 |
| JBU927 | JetBlue Airways | 3 | 2026-04-29 |
| JBU828 | JetBlue Airways | 3 | 2026-04-29 |
| JBU781 | JetBlue Airways | 3 | 2026-06-17 |
| JBU470 | - | 3 | 2026-04-13 |
| JBU2854 | JetBlue Airways | 3 | 2026-05-02 |
| JBU2754 | - | 3 | 2026-06-13 |
| JBU266 | - | 3 | 2026-07-06 |
| JBU206 | - | 3 | 2026-06-18 |
| JBU1923 | JetBlue Airways | 3 | 2026-04-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | JBU1716 | VRB → JFK | Jul 13, 18:55 UTC | Jul 14, 03:00 UTC | 8h 6m |
| 2026-07-13 | JBU1206 | ORD → JFK | Jul 13, 11:12 UTC | Jul 14, 03:00 UTC | 15h 49m |
| 2026-07-12 | JBU125 | JFK → TPA | Jul 12, 15:54 UTC | Jul 13, 15:45 UTC | 23h 52m |
| 2026-07-12 | JBU125 | - | Jul 12, 15:55 UTC | Jul 12, 18:30 UTC | 2h 35m |
| 2026-07-11 | JBU1736 | STI → JFK | Jul 11, 15:21 UTC | Jul 12, 05:20 UTC | 14h 0m |
| 2026-07-11 | JBU1737 | JFK → STI | Jul 11, 10:26 UTC | Jul 12, 05:20 UTC | 18h 55m |
| 2026-07-11 | JBU1737 | - | Jul 11, 10:30 UTC | Jul 11, 11:20 UTC | 50m |
| 2026-07-10 | JBU226 | TPA → JFK | Jul 10, 20:25 UTC | Jul 10, 23:05 UTC | 2h 40m |
| 2026-07-10 | JBU125 | JFK → TPA | Jul 10, 16:00 UTC | Jul 10, 18:20 UTC | 2h 20m |
| 2026-07-09 | JBU1500 | - | Jul 9, 21:05 UTC | Jul 10, 00:05 UTC | 3h 0m |
| 2026-07-09 | JBU1500 | DAB → BOS | Jul 9, 21:00 UTC | Jul 10, 18:25 UTC | 21h 25m |
| 2026-07-09 | JBU1499 | - | Jul 9, 17:30 UTC | Jul 9, 20:00 UTC | 2h 30m |
| 2026-07-09 | JBU150 | - | Jul 9, 13:40 UTC | Jul 9, 15:45 UTC | 2h 5m |
| 2026-07-08 | JBU1382 | IAH → JFK | Jul 8, 18:38 UTC | Jul 9, 17:45 UTC | 23h 7m |
| 2026-07-08 | JBU955 | JFK → DCA | Jul 8, 05:05 UTC | Jul 8, 22:00 UTC | 16h 56m |
| 2026-07-08 | JBU817 | BOS → JFK | Jul 8, 02:55 UTC | Jul 8, 22:00 UTC | 19h 6m |
| 2026-07-07 | JBU932 | IAH → BOS | Jul 7, 21:25 UTC | Jul 8, 01:15 UTC | 3h 50m |
| 2026-07-07 | JBU932 | IAH → BOS | Jul 7, 21:22 UTC | Jul 8, 19:45 UTC | 22h 24m |
| 2026-07-07 | JBU2033 | - | Jul 7, 13:30 UTC | Jul 7, 17:05 UTC | 3h 35m |
| 2026-07-06 | JBU1813 | BOS → ORF | Jul 6, 19:36 UTC | Jul 7, 17:05 UTC | 21h 30m |
| 2026-07-06 | JBU266 | - | Jul 6, 15:10 UTC | Jul 6, 15:45 UTC | 35m |
| 2026-07-06 | JBU266 | RSW → BOS | Jul 6, 15:10 UTC | Jul 7, 13:45 UTC | 22h 36m |
| 2026-07-06 | JBU165 | BOS → RSW | Jul 6, 10:50 UTC | Jul 6, 13:50 UTC | 3h 0m |
| 2026-07-04 | JBU1083 | JFK → MCO | Jul 4, 04:44 UTC | Jul 4, 22:05 UTC | 17h 21m |
| 2026-07-03 | JBU341 | JFK → SAV | Jul 3, 22:39 UTC | Jul 4, 21:30 UTC | 22h 52m |
| 2026-07-03 | JBU1736 | STI → JFK | Jul 3, 16:48 UTC | Jul 4, 15:45 UTC | 22h 57m |
| 2026-07-03 | JBU359 | - | Jul 3, 04:45 UTC | Jul 3, 07:45 UTC | 3h 0m |
| 2026-07-03 | JBU359 | BUR → JFK | Jul 3, 04:42 UTC | Jul 4, 03:10 UTC | 22h 29m |
| 2026-07-02 | JBU358 | JFK → BUR | Jul 2, 22:05 UTC | Jul 3, 03:30 UTC | 5h 25m |
| 2026-07-02 | JBU80 | - | Jul 2, 15:00 UTC | Jul 2, 20:00 UTC | 5h 0m |
| 2026-07-01 | JBU81 | - | Jul 1, 22:50 UTC | Jul 2, 04:15 UTC | 5h 25m |
| 2026-07-01 | JBU2783 | BOS → RDU | Jul 1, 03:01 UTC | Jul 2, 01:45 UTC | 22h 45m |
| 2026-06-30 | JBU204 | BDA → BOS | Jun 30, 16:01 UTC | Jul 1, 13:45 UTC | 21h 44m |
| 2026-06-30 | JBU207 | PQI → BOS | Jun 30, 09:54 UTC | Jul 1, 04:30 UTC | 18h 36m |
| 2026-06-29 | JBU782 | RIC → BOS | Jun 29, 22:19 UTC | Jun 30, 21:35 UTC | 23h 17m |
| 2026-06-29 | JBU203 | BOS → BDA | Jun 29, 12:40 UTC | Jun 30, 11:15 UTC | 22h 36m |
| 2026-06-29 | JBU248 | SLC → BOS | Jun 29, 06:14 UTC | Jun 29, 10:10 UTC | 3h 55m |
| 2026-06-29 | JBU248 | SLC → BOS | Jun 29, 06:13 UTC | Jun 30, 02:00 UTC | 19h 48m |
| 2026-06-29 | JBU247 | - | Jun 29, 00:14 UTC | Jun 29, 05:04 UTC | 4h 50m |
| 2026-06-28 | JBU818 | - | Jun 28, 21:59 UTC | Jun 28, 22:34 UTC | 35m |
| 2026-06-28 | JBU176 | MSY → JFK | Jun 28, 17:04 UTC | Jun 28, 19:44 UTC | 2h 40m |
| 2026-06-28 | JBU75 | JFK → MSY | Jun 28, 13:14 UTC | Jun 28, 15:55 UTC | 2h 40m |
| 2026-06-28 | JBU1419 | - | Jun 28, 10:10 UTC | Jun 28, 11:19 UTC | 1h 10m |
| 2026-06-28 | JBU820 | SDQ → JFK | Jun 28, 02:49 UTC | Jun 28, 04:15 UTC | 1h 25m |
| 2026-06-27 | JBU1498 | - | Jun 27, 21:55 UTC | Jun 28, 01:10 UTC | 3h 15m |
| 2026-06-27 | JBU1497 | - | Jun 27, 14:45 UTC | Jun 27, 18:35 UTC | 3h 50m |
| 2026-06-27 | JBU854 | PBI → JFK | Jun 27, 10:54 UTC | Jun 27, 13:04 UTC | 2h 10m |
| 2026-06-27 | JBU1053 | - | Jun 27, 00:14 UTC | Jun 27, 02:45 UTC | 2h 30m |
| 2026-06-26 | JBU192 | - | Jun 26, 20:50 UTC | Jun 26, 21:30 UTC | 40m |
| 2026-06-26 | JBU2291 | - | Jun 26, 18:29 UTC | Jun 26, 19:04 UTC | 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 N3125J page for operator, model, and routing details .