sensors Mode-S transponder
A38AD5
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N3271J · operated by JETBLUE AIRWAYS CORP
- Hex
- A38AD5
- Octal
- 50705325
- Decimal
- 10,717,909
- Country
- US
- Tail
- N3271J
- Type
- BCS3
- Flights observed
- 326
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address A38AD5 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 |
|---|---|---|---|
| JBU1056 | JetBlue Airways | 6 | 2026-05-02 |
| JBU204 | - | 5 | 2026-06-18 |
| JBU203 | - | 5 | 2026-06-19 |
| JBU1160 | - | 5 | 2026-06-27 |
| JBU862 | JetBlue Airways | 4 | 2026-06-09 |
| JBU547 | JetBlue Airways | 4 | 2026-05-03 |
| JBU303 | JetBlue Airways | 4 | 2026-04-16 |
| JBU2769 | - | 4 | 2026-07-11 |
| JBU2468 | - | 4 | 2026-07-13 |
| JBU1785 | JetBlue Airways | 4 | 2026-06-22 |
| JBU1302 | JetBlue Airways | 4 | 2026-05-22 |
| JBU1282 | - | 4 | 2026-06-17 |
| JBU855 | JetBlue Airways | 3 | 2026-05-02 |
| JBU641 | JetBlue Airways | 3 | 2026-05-21 |
| JBU374 | - | 3 | 2026-06-23 |
| JBU2954 | - | 3 | 2026-07-08 |
| JBU248 | - | 3 | 2026-06-18 |
| JBU2467 | - | 3 | 2026-07-13 |
| JBU2230 | - | 3 | 2026-07-13 |
| JBU1786 | JetBlue Airways | 3 | 2026-06-13 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-15 | JBU810 | - | Jul 15, 01:45 UTC | Jul 15, 03:15 UTC | 1h 30m |
| 2026-07-14 | JBU509 | - | Jul 14, 21:15 UTC | Jul 14, 23:40 UTC | 2h 24m |
| 2026-07-14 | JBU392 | TPA → BOS | Jul 14, 16:25 UTC | Jul 14, 19:10 UTC | 2h 45m |
| 2026-07-14 | JBU791 | BOS → TPA | Jul 14, 12:40 UTC | Jul 14, 15:20 UTC | 2h 40m |
| 2026-07-13 | JBU2468 | - | Jul 13, 21:30 UTC | Jul 13, 23:30 UTC | 2h 0m |
| 2026-07-13 | JBU2467 | - | Jul 13, 18:20 UTC | Jul 13, 20:20 UTC | 2h 0m |
| 2026-07-13 | JBU2230 | - | Jul 13, 14:30 UTC | Jul 13, 16:25 UTC | 1h 55m |
| 2026-07-12 | JBU386 | PIT → BOS | Jul 12, 18:11 UTC | Jul 13, 17:15 UTC | 23h 5m |
| 2026-07-12 | JBU994 | DEN → BOS | Jul 12, 06:10 UTC | Jul 13, 05:15 UTC | 23h 6m |
| 2026-07-12 | JBU993 | BOS → DEN | Jul 12, 01:09 UTC | Jul 12, 23:15 UTC | 22h 7m |
| 2026-07-11 | JBU176 | MSY → JFK | Jul 11, 17:40 UTC | Jul 12, 17:10 UTC | 23h 31m |
| 2026-07-11 | JBU2769 | CLE → JFK | Jul 11, 10:39 UTC | Jul 12, 09:15 UTC | 22h 37m |
| 2026-07-10 | JBU520 | ATL → JFK | Jul 10, 23:56 UTC | Jul 11, 23:15 UTC | 23h 20m |
| 2026-07-10 | JBU311 | BOS → ORD | Jul 10, 12:30 UTC | Jul 11, 11:15 UTC | 22h 46m |
| 2026-07-10 | JBU1264 | - | Jul 10, 01:25 UTC | Jul 10, 03:00 UTC | 1h 35m |
| 2026-07-10 | JBU1264 | TVC → BOS | Jul 10, 01:18 UTC | Jul 10, 23:05 UTC | 21h 48m |
| 2026-07-09 | JBU1263 | - | Jul 9, 22:05 UTC | Jul 10, 00:00 UTC | 1h 55m |
| 2026-07-09 | JBU1232 | - | Jul 9, 17:15 UTC | Jul 9, 19:55 UTC | 2h 40m |
| 2026-07-08 | JBU2954 | DCA → BOS | Jul 8, 21:34 UTC | Jul 9, 20:10 UTC | 22h 37m |
| 2026-07-08 | JBU1952 | - | Jul 8, 01:50 UTC | Jul 8, 04:35 UTC | 2h 45m |
| 2026-07-08 | JBU1952 | MCO → BOS | Jul 8, 01:47 UTC | Jul 9, 01:15 UTC | 23h 28m |
| 2026-07-07 | JBU522 | - | Jul 7, 17:10 UTC | Jul 7, 22:05 UTC | 4h 55m |
| 2026-07-07 | JBU2266 | MCO → MCO | Jul 7, 09:40 UTC | Jul 7, 15:05 UTC | 5h 25m |
| 2026-07-05 | JBU2655 | - | Jul 5, 23:30 UTC | Jul 6, 02:10 UTC | 2h 40m |
| 2026-07-05 | JBU2655 | SYR → MCO | Jul 5, 23:27 UTC | Jul 6, 08:35 UTC | 9h 8m |
| 2026-07-05 | JBU2656 | - | Jul 5, 19:15 UTC | Jul 5, 21:35 UTC | 2h 20m |
| 2026-07-04 | JBU1043 | - | Jul 4, 19:55 UTC | Jul 4, 22:30 UTC | 2h 35m |
| 2026-07-04 | JBU1042 | SAV → JFK | Jul 4, 16:25 UTC | Jul 4, 18:55 UTC | 2h 30m |
| 2026-07-04 | JBU183 | BOS → RDU | Jul 4, 12:30 UTC | Jul 4, 15:10 UTC | 2h 40m |
| 2026-07-02 | JBU1963 | - | Jul 2, 20:55 UTC | Jul 2, 21:15 UTC | 20m |
| 2026-07-02 | JBU1963 | HYA → JFK | Jul 2, 20:50 UTC | Jul 3, 09:10 UTC | 12h 21m |
| 2026-07-02 | JBU1964 | - | Jul 2, 17:40 UTC | Jul 2, 18:15 UTC | 35m |
| 2026-07-02 | JBU1520 | ATL → JFK | Jul 2, 14:20 UTC | Jul 2, 16:10 UTC | 1h 50m |
| 2026-07-02 | JBU519 | JFK → ATL | Jul 2, 11:05 UTC | Jul 2, 12:50 UTC | 1h 45m |
| 2026-07-02 | JBU884 | - | Jul 2, 00:45 UTC | Jul 2, 02:55 UTC | 2h 10m |
| 2026-07-01 | JBU522 | MCO → MCO | Jul 1, 17:15 UTC | Jul 1, 21:50 UTC | 4h 35m |
| 2026-07-01 | JBU2266 | MCO → MCO | Jul 1, 09:35 UTC | Jul 1, 15:00 UTC | 5h 25m |
| 2026-06-30 | JBU2265 | MCO → STI | Jun 30, 09:40 UTC | Jul 1, 00:35 UTC | 14h 56m |
| 2026-06-29 | JBU1923 | DCA → MCO | Jun 29, 15:14 UTC | Jun 30, 10:30 UTC | 19h 17m |
| 2026-06-29 | JBU2468 | - | Jun 29, 00:05 UTC | Jun 29, 02:09 UTC | 2h 5m |
| 2026-06-29 | JBU2468 | CHS → BOS | Jun 29, 00:03 UTC | Jun 29, 23:14 UTC | 23h 12m |
| 2026-06-28 | JBU2467 | - | Jun 28, 19:40 UTC | Jun 28, 21:40 UTC | 2h 0m |
| 2026-06-28 | JBU250 | SAV → BOS | Jun 28, 02:45 UTC | Jun 29, 01:14 UTC | 22h 30m |
| 2026-06-27 | JBU1500 | - | Jun 27, 18:45 UTC | Jun 27, 21:04 UTC | 2h 20m |
| 2026-06-27 | JBU1500 | DAB → BOS | Jun 27, 18:41 UTC | Jun 28, 17:10 UTC | 22h 29m |
| 2026-06-27 | JBU1499 | - | Jun 27, 14:54 UTC | Jun 27, 17:25 UTC | 2h 30m |
| 2026-06-27 | JBU1160 | - | Jun 27, 12:34 UTC | Jun 27, 13:20 UTC | 45m |
| 2026-06-26 | JBU1232 | VRB → BOS | Jun 26, 17:18 UTC | Jun 27, 15:14 UTC | 21h 57m |
| 2026-06-26 | JBU2783 | BOS → RDU | Jun 26, 01:24 UTC | Jun 27, 00:29 UTC | 23h 6m |
| 2026-06-25 | JBU2954 | DCA → BOS | Jun 25, 22:20 UTC | Jun 25, 23:14 UTC | 55m |
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 N3271J page for operator, model, and routing details .