sensors Mode-S transponder
A87898
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N645JB · AIRBUS A-320 · operated by JETBLUE AIRWAYS CORP
- Hex
- A87898
- Octal
- 52074230
- Decimal
- 11,040,920
- Country
- US
- Tail
- N645JB
- Type
- A320
- Flights observed
- 159
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address A87898 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 |
|---|---|---|---|
| JBU2920 | JetBlue Airways | 4 | 2026-04-21 |
| JBU1793 | JetBlue Airways | 4 | 2026-05-29 |
| JBU814 | JetBlue Airways | 3 | 2026-05-10 |
| JBU65 | - | 3 | 2026-04-15 |
| JBU635 | - | 3 | 2026-04-13 |
| JBU365 | JetBlue Airways | 3 | 2026-04-16 |
| JBU2166 | JetBlue Airways | 3 | 2026-05-08 |
| JBU213 | JetBlue Airways | 3 | 2026-05-10 |
| JBU2097 | JetBlue Airways | 3 | 2026-04-30 |
| JBU2066 | JetBlue Airways | 3 | 2026-04-14 |
| JBU2065 | - | 3 | 2026-04-14 |
| JBU1797 | JetBlue Airways | 3 | 2026-05-22 |
| JBU1778 | JetBlue Airways | 3 | 2026-05-12 |
| JBU1743 | JetBlue Airways | 3 | 2026-05-19 |
| JBU1742 | JetBlue Airways | 3 | 2026-05-19 |
| JBU1368 | JetBlue Airways | 3 | 2026-04-18 |
| JBU959 | JetBlue Airways | 2 | 2026-05-25 |
| JBU883 | JetBlue Airways | 2 | 2026-05-23 |
| JBU526 | JetBlue Airways | 2 | 2026-05-16 |
| JBU454 | JetBlue Airways | 2 | 2026-04-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | JBU1794 | SJO → JFK | May 29, 20:50 UTC | May 30, 01:30 UTC | 4h 40m |
| 2026-05-29 | JBU1794 | SJO → JFK | May 29, 20:32 UTC | May 30, 01:40 UTC | 5h 9m |
| 2026-05-29 | JBU1793 | JFK → SJO | May 29, 13:50 UTC | May 29, 18:10 UTC | 4h 20m |
| 2026-05-28 | JBU1793 | JFK → SJO | May 28, 13:30 UTC | May 29, 00:45 UTC | 11h 15m |
| 2026-05-28 | JBU1579 | DCA → FLL | May 28, 00:36 UTC | May 29, 00:00 UTC | 23h 24m |
| 2026-05-27 | JBU1680 | FLL → DCA | May 27, 16:57 UTC | May 28, 16:00 UTC | 23h 3m |
| 2026-05-27 | JBU1318 | JFK → BOS | May 27, 02:59 UTC | May 28, 02:00 UTC | 23h 1m |
| 2026-05-26 | JBU467 | ATL → FLL | May 26, 21:08 UTC | May 27, 19:15 UTC | 22h 7m |
| 2026-05-26 | JBU1530 | RSW → JFK | May 26, 16:58 UTC | May 27, 14:00 UTC | 21h 2m |
| 2026-05-26 | JBU1529 | JFK → RSW | May 26, 12:57 UTC | May 27, 12:00 UTC | 23h 3m |
| 2026-05-25 | JBU1173 | EWR → TPA | May 25, 19:25 UTC | May 25, 21:19 UTC | 1h 55m |
| 2026-05-25 | JBU1173 | EWR → TPA | May 25, 19:24 UTC | May 26, 17:59 UTC | 22h 36m |
| 2026-05-25 | JBU602 | FLL → JFK | May 25, 15:25 UTC | May 25, 17:50 UTC | 2h 25m |
| 2026-05-25 | JBU959 | BDL → FLL | May 25, 11:10 UTC | May 25, 13:55 UTC | 2h 45m |
| 2026-05-25 | JBU460 | FLL → BDL | May 25, 01:55 UTC | May 25, 03:25 UTC | 1h 30m |
| 2026-05-24 | JBU1754 | SJU → FLL | May 24, 23:00 UTC | May 24, 23:10 UTC | 10m |
| 2026-05-24 | JBU1754 | SJU → FLL | May 24, 20:50 UTC | May 24, 21:05 UTC | 15m |
| 2026-05-24 | JBU503 | JFK → SJU | May 24, 16:25 UTC | May 24, 19:35 UTC | 3h 10m |
| 2026-05-24 | JBU538 | BQN → JFK | May 24, 10:50 UTC | May 24, 14:10 UTC | 3h 20m |
| 2026-05-24 | JBU430 | MCO → BQN | May 24, 02:25 UTC | May 24, 14:10 UTC | 11h 45m |
| 2026-05-23 | JBU883 | JFK → MCO | May 23, 10:50 UTC | May 23, 13:00 UTC | 2h 10m |
| 2026-05-23 | JBU883 | JFK → MCO | May 23, 10:49 UTC | May 24, 03:00 UTC | 16h 12m |
| 2026-05-23 | JBU1274 | CHS → JFK | May 23, 00:05 UTC | May 23, 01:35 UTC | 1h 30m |
| 2026-05-22 | JBU2473 | JFK → CHS | May 22, 21:25 UTC | May 22, 22:55 UTC | 1h 30m |
| 2026-05-22 | JBU684 | RDU → BOS | May 22, 17:35 UTC | May 22, 19:45 UTC | 2h 10m |
| 2026-05-22 | JBU2548 | FLL → MCO | May 22, 15:00 UTC | May 22, 15:35 UTC | 35m |
| 2026-05-22 | JBU1797 | ATL → FLL | May 22, 12:00 UTC | May 22, 13:25 UTC | 1h 25m |
| 2026-05-22 | JBU1798 | MCO → LGA | May 22, 00:10 UTC | May 22, 01:35 UTC | 1h 25m |
| 2026-05-21 | JBU1175 | FLL → KIN | May 21, 20:40 UTC | May 21, 22:35 UTC | 1h 55m |
| 2026-05-21 | JBU1176 | LAX → JFK | May 21, 17:20 UTC | May 21, 19:10 UTC | 1h 50m |
| 2026-05-20 | JBU2602 | JFK → BUF | May 20, 21:04 UTC | May 21, 19:10 UTC | 22h 7m |
| 2026-05-20 | JBU2631 | SJU → PUJ | May 20, 17:10 UTC | May 20, 17:20 UTC | 10m |
| 2026-05-20 | JBU2631 | SJU → PUJ | May 20, 17:06 UTC | May 21, 15:10 UTC | 22h 5m |
| 2026-05-20 | JBU2632 | PUJ → SJU | May 20, 15:15 UTC | May 20, 15:25 UTC | 10m |
| 2026-05-20 | JBU1731 | SLC → LAX | May 20, 13:15 UTC | May 20, 13:25 UTC | 10m |
| 2026-05-19 | JBU1743 | JAX → SJU | May 19, 22:40 UTC | May 20, 01:20 UTC | 2h 40m |
| 2026-05-19 | JBU1742 | SJU → JAX | May 19, 18:25 UTC | May 19, 21:20 UTC | 2h 55m |
| 2026-05-19 | JBU703 | BDL → RSW | May 19, 01:59 UTC | May 19, 23:25 UTC | 21h 26m |
| 2026-05-18 | JBU936 | SJU → STT | May 18, 17:10 UTC | May 19, 05:45 UTC | 12h 35m |
| 2026-05-18 | JBU1033 | MCO → SJU | May 18, 13:33 UTC | May 19, 05:45 UTC | 16h 12m |
| 2026-05-18 | JBU583 | JFK → MCO | May 18, 09:55 UTC | May 19, 05:45 UTC | 19h 50m |
| 2026-05-17 | JBU2662 | BGI → JFK | May 17, 20:30 UTC | May 18, 19:00 UTC | 22h 30m |
| 2026-05-17 | JBU2001 | BUF → JFK | May 17, 11:12 UTC | May 18, 10:00 UTC | 22h 49m |
| 2026-05-17 | JBU1202 | JFK → BUF | May 17, 00:07 UTC | May 17, 23:15 UTC | 23h 9m |
| 2026-05-16 | JBU1129 | PVD → JFK | May 16, 10:05 UTC | May 16, 10:31 UTC | 25m |
| 2026-05-16 | JBU1129 | PVD → JFK | May 16, 10:01 UTC | May 17, 01:10 UTC | 15h 10m |
| 2026-05-16 | JBU526 | MCO → EWR | May 16, 04:55 UTC | May 16, 05:40 UTC | 45m |
| 2026-05-16 | JBU526 | MCO → EWR | May 16, 02:10 UTC | May 16, 02:20 UTC | 10m |
| 2026-05-15 | JBU1704 | MDE → SJU | May 15, 22:45 UTC | May 15, 22:55 UTC | 10m |
| 2026-05-15 | JBU41 | FLL → MDE | May 15, 16:00 UTC | May 15, 21:50 UTC | 5h 50m |
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 N645JB page for operator, model, and routing details .