sensors Mode-S transponder
A38B61
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N3275J · operated by JETBLUE AIRWAYS CORP
- Hex
- A38B61
- Octal
- 50705541
- Decimal
- 10,718,049
- Country
- US
- Tail
- N3275J
- Type
- BCS3
- Flights observed
- 305
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address A38B61 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 |
|---|---|---|---|
| JBU2272 | JetBlue Airways | 7 | 2026-06-08 |
| JBU2271 | JetBlue Airways | 6 | 2026-06-08 |
| JBU494 | - | 5 | 2026-07-07 |
| JBU2065 | - | 5 | 2026-07-01 |
| JBU2229 | - | 4 | 2026-07-06 |
| JBU1450 | JetBlue Airways | 4 | 2026-06-06 |
| JBU845 | - | 3 | 2026-07-05 |
| JBU392 | JetBlue Airways | 3 | 2026-06-01 |
| JBU302 | JetBlue Airways | 3 | 2026-05-30 |
| JBU2917 | JetBlue Airways | 3 | 2026-05-26 |
| JBU2783 | - | 3 | 2026-06-20 |
| JBU2754 | - | 3 | 2026-06-20 |
| JBU2626 | JetBlue Airways | 3 | 2026-05-18 |
| JBU2448 | JetBlue Airways | 3 | 2026-04-27 |
| JBU2186 | - | 3 | 2026-07-01 |
| JBU2185 | - | 3 | 2026-06-30 |
| JBU2119 | JetBlue Airways | 3 | 2026-05-17 |
| JBU2072 | JetBlue Airways | 3 | 2026-04-26 |
| JBU2071 | JetBlue Airways | 3 | 2026-04-23 |
| JBU2020 | JetBlue Airways | 3 | 2026-05-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | JBU2493 | ACK → DCA | Jul 13, 15:22 UTC | Jul 14, 04:00 UTC | 12h 39m |
| 2026-07-12 | JBU2122 | ACK → HPN | Jul 12, 22:16 UTC | Jul 13, 20:15 UTC | 22h 0m |
| 2026-07-12 | JBU855 | BOS → DCA | Jul 12, 17:27 UTC | Jul 13, 16:15 UTC | 22h 49m |
| 2026-07-12 | JBU1324 | BOS → MVY | Jul 12, 13:30 UTC | Jul 12, 13:55 UTC | 25m |
| 2026-07-12 | JBU1324 | BOS → MVY | Jul 12, 13:30 UTC | Jul 12, 23:00 UTC | 9h 31m |
| 2026-07-12 | JBU2322 | - | Jul 12, 00:40 UTC | Jul 12, 03:10 UTC | 2h 30m |
| 2026-07-11 | JBU2321 | - | Jul 11, 20:40 UTC | Jul 11, 23:20 UTC | 2h 40m |
| 2026-07-11 | JBU266 | RSW → BOS | Jul 11, 16:30 UTC | Jul 11, 19:25 UTC | 2h 55m |
| 2026-07-10 | JBU1529 | JFK → RSW | Jul 10, 15:40 UTC | Jul 10, 18:10 UTC | 2h 30m |
| 2026-07-10 | JBU1529 | JFK → RSW | Jul 10, 15:38 UTC | Jul 10, 18:15 UTC | 2h 38m |
| 2026-07-10 | JBU8375 | - | Jul 10, 12:05 UTC | Jul 10, 12:45 UTC | 40m |
| 2026-07-09 | JBU1374 | BNA → ALB | Jul 9, 18:15 UTC | Jul 9, 21:15 UTC | 3h 0m |
| 2026-07-09 | JBU1337 | BOS → DTW | Jul 9, 01:00 UTC | Jul 9, 02:30 UTC | 1h 30m |
| 2026-07-09 | JBU1337 | BOS → DTW | Jul 9, 00:57 UTC | Jul 9, 21:15 UTC | 20h 18m |
| 2026-07-08 | JBU400 | MSY → BOS | Jul 8, 20:40 UTC | Jul 8, 23:20 UTC | 2h 40m |
| 2026-07-08 | JBU810 | JAX → BOS | Jul 8, 02:24 UTC | Jul 9, 02:15 UTC | 23h 51m |
| 2026-07-07 | JBU494 | DEN → BOS | Jul 7, 16:41 UTC | Jul 8, 16:15 UTC | 23h 34m |
| 2026-07-07 | JBU494 | DEN → BOS | Jul 7, 16:45 UTC | Jul 7, 20:35 UTC | 3h 50m |
| 2026-07-06 | JBU2230 | MKE → BOS | Jul 6, 14:32 UTC | Jul 6, 21:40 UTC | 7h 8m |
| 2026-07-06 | JBU2229 | - | Jul 6, 11:15 UTC | Jul 6, 13:20 UTC | 2h 5m |
| 2026-07-06 | JBU2229 | BOS → MKE | Jul 6, 11:14 UTC | Jul 6, 21:40 UTC | 10h 26m |
| 2026-07-05 | JBU374 | SYR → BOS | Jul 5, 11:11 UTC | Jul 6, 02:40 UTC | 15h 29m |
| 2026-07-05 | JBU845 | BOS → SYR | Jul 5, 02:03 UTC | Jul 6, 00:15 UTC | 22h 13m |
| 2026-07-04 | JBU793 | BOS → DEN | Jul 4, 15:55 UTC | Jul 5, 14:15 UTC | 22h 21m |
| 2026-07-04 | JBU994 | DEN → BOS | Jul 4, 05:47 UTC | Jul 5, 02:50 UTC | 21h 3m |
| 2026-07-04 | JBU993 | BOS → DEN | Jul 4, 00:19 UTC | Jul 5, 00:15 UTC | 23h 56m |
| 2026-07-03 | JBU2666 | HPN → ACK | Jul 3, 20:05 UTC | Jul 4, 18:15 UTC | 22h 11m |
| 2026-07-03 | JBU2665 | ACK → HPN | Jul 3, 18:09 UTC | Jul 4, 16:15 UTC | 22h 7m |
| 2026-07-03 | JBU484 | - | Jul 3, 13:35 UTC | Jul 3, 15:00 UTC | 1h 25m |
| 2026-07-03 | JBU484 | RDU → BOS | Jul 3, 13:30 UTC | Jul 4, 12:15 UTC | 22h 46m |
| 2026-07-03 | JBU1883 | BOS → RDU | Jul 3, 10:40 UTC | Jul 3, 12:05 UTC | 1h 25m |
| 2026-07-02 | JBU2229 | BOS → MKE | Jul 2, 11:14 UTC | Jul 3, 04:00 UTC | 16h 46m |
| 2026-07-02 | JBU2066 | RSW → BOS | Jul 2, 00:59 UTC | Jul 2, 19:15 UTC | 18h 16m |
| 2026-07-01 | JBU2065 | BOS → RSW | Jul 1, 19:56 UTC | Jul 2, 18:15 UTC | 22h 19m |
| 2026-07-01 | JBU896 | - | Jul 1, 16:05 UTC | Jul 1, 16:15 UTC | 10m |
| 2026-07-01 | JBU1097 | BOS → ATL | Jul 1, 12:39 UTC | Jul 2, 12:15 UTC | 23h 36m |
| 2026-07-01 | JBU1097 | BOS → ATL | Jul 1, 12:40 UTC | Jul 1, 14:50 UTC | 2h 10m |
| 2026-07-01 | JBU2186 | - | Jul 1, 00:35 UTC | Jul 1, 01:45 UTC | 1h 10m |
| 2026-06-30 | JBU2185 | - | Jun 30, 22:00 UTC | Jun 30, 23:15 UTC | 1h 15m |
| 2026-06-30 | JBU1254 | DCA → BOS | Jun 30, 17:45 UTC | Jun 30, 18:55 UTC | 1h 10m |
| 2026-06-30 | JBU2493 | - | Jun 30, 14:50 UTC | Jun 30, 16:00 UTC | 1h 10m |
| 2026-06-30 | JBU2121 | - | Jun 30, 13:05 UTC | Jun 30, 13:45 UTC | 40m |
| 2026-06-29 | JBU2122 | - | Jun 29, 23:14 UTC | Jun 29, 23:49 UTC | 35m |
| 2026-06-29 | JBU2494 | - | Jun 29, 21:14 UTC | Jun 29, 22:19 UTC | 1h 5m |
| 2026-06-29 | JBU2324 | - | Jun 29, 18:14 UTC | Jun 29, 20:00 UTC | 1h 45m |
| 2026-06-28 | JBU1727 | EWR → MCO | Jun 28, 23:13 UTC | Jun 29, 22:15 UTC | 23h 2m |
| 2026-06-28 | JBU1727 | EWR → MCO | Jun 28, 23:14 UTC | Jun 29, 01:34 UTC | 2h 20m |
| 2026-06-28 | JBU128 | MCO → EWR | Jun 28, 19:34 UTC | Jun 28, 21:50 UTC | 2h 15m |
| 2026-06-28 | JBU1923 | DCA → MCO | Jun 28, 15:14 UTC | Jun 28, 17:00 UTC | 1h 45m |
| 2026-06-28 | JBU2355 | BOS → DCA | Jun 28, 12:39 UTC | Jun 28, 13:59 UTC | 1h 20m |
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 N3275J page for operator, model, and routing details .