- Flights observed
- 206
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- Jul 26, 23:00 UTC
Last known position
Country allocation
The ICAO 24-bit address A398BC 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 |
|---|---|---|---|
| JBU2011 | - | 5 | 2026-06-29 |
| JBU92 | - | 4 | 2026-07-14 |
| JBU625 | - | 4 | 2026-06-26 |
| JBU509 | JetBlue Airways | 4 | 2026-06-13 |
| JBU2152 | - | 4 | 2026-07-22 |
| JBU2091 | - | 4 | 2026-07-14 |
| JBU1963 | - | 4 | 2026-07-09 |
| JBU71 | - | 3 | 2026-06-28 |
| JBU401 | - | 3 | 2026-07-10 |
| JBU1516 | - | 3 | 2026-07-01 |
| JBU130 | JetBlue Airways | 3 | 2026-06-08 |
| JBU1117 | JetBlue Airways | 3 | 2026-06-02 |
| JBU994 | JetBlue Airways | 2 | 2026-07-26 |
| JBU955 | - | 2 | 2026-06-24 |
| JBU8692 | JetBlue Airways | 2 | 2026-05-20 |
| JBU862 | JetBlue Airways | 2 | 2026-06-01 |
| JBU8374 | JetBlue Airways | 2 | 2026-07-20 |
| JBU831 | JetBlue Airways | 2 | 2026-07-18 |
| JBU592 | JetBlue Airways | 2 | 2026-07-22 |
| JBU591 | - | 2 | 2026-06-18 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | JBU994 | DEN → BOS | Jul 26, 05:47 UTC | Jul 26, 23:00 UTC | 17h 14m |
| 2026-07-26 | JBU97 | JFK → DEN | Jul 26, 00:33 UTC | Jul 26, 23:00 UTC | 22h 28m |
| 2026-07-25 | JBU317 | BOS → JFK | Jul 25, 20:56 UTC | Jul 26, 19:00 UTC | 22h 5m |
| 2026-07-25 | JBU252 | RSW → HPN | Jul 25, 17:00 UTC | Jul 25, 19:30 UTC | 2h 30m |
| 2026-07-25 | JBU2876 | MCO → PVD | Jul 25, 00:10 UTC | Jul 25, 21:40 UTC | 21h 30m |
| 2026-07-24 | JBU1281 | BOS → RIC | Jul 24, 11:08 UTC | Jul 25, 10:10 UTC | 23h 2m |
| 2026-07-23 | JBU1596 | PUJ → BOS | Jul 23, 17:40 UTC | Jul 24, 03:05 UTC | 9h 25m |
| 2026-07-22 | JBU592 | MCO → HPN | Jul 22, 21:05 UTC | Jul 22, 23:50 UTC | 2h 45m |
| 2026-07-22 | JBU2152 | - | Jul 22, 18:55 UTC | Jul 22, 19:50 UTC | 55m |
| 2026-07-22 | JBU2152 | - | Jul 22, 17:15 UTC | Jul 22, 17:25 UTC | 10m |
| 2026-07-22 | JBU751 | JFK → CUN | Jul 22, 02:20 UTC | Jul 22, 03:00 UTC | 40m |
| 2026-07-21 | JBU391 | BOS → TPA | Jul 21, 21:08 UTC | Jul 22, 21:00 UTC | 23h 52m |
| 2026-07-21 | JBU391 | BOS → TPA | Jul 21, 21:10 UTC | Jul 22, 01:00 UTC | 3h 50m |
| 2026-07-21 | JBU204 | BDA → BOS | Jul 21, 13:25 UTC | Jul 21, 18:40 UTC | 5h 15m |
| 2026-07-20 | JBU8374 | PHL → BOS | Jul 20, 17:50 UTC | Jul 20, 18:45 UTC | 55m |
| 2026-07-20 | JBU8374 | PHL → BOS | Jul 20, 17:50 UTC | Jul 21, 14:00 UTC | 20h 10m |
| 2026-07-18 | JBU831 | BOS → LGA | Jul 18, 23:07 UTC | Jul 19, 10:45 UTC | 11h 39m |
| 2026-07-18 | JBU1785 | BOS → PIT | Jul 18, 01:13 UTC | Jul 19, 00:30 UTC | 23h 18m |
| 2026-07-17 | JBU312 | ORD → BOS | Jul 17, 16:59 UTC | Jul 17, 18:50 UTC | 1h 50m |
| 2026-07-17 | JBU312 | ORD → BOS | Jul 17, 16:58 UTC | Jul 18, 14:05 UTC | 21h 8m |
| 2026-07-17 | JBU311 | BOS → ORD | Jul 17, 12:25 UTC | Jul 17, 14:39 UTC | 2h 15m |
| 2026-07-17 | JBU248 | SLC → BOS | Jul 17, 06:10 UTC | Jul 17, 10:15 UTC | 4h 5m |
| 2026-07-17 | JBU247 | OAK → LGB | Jul 17, 00:10 UTC | Jul 17, 04:49 UTC | 4h 40m |
| 2026-07-16 | JBU1806 | BNA → BOS | Jul 16, 18:15 UTC | Jul 16, 20:25 UTC | 2h 10m |
| 2026-07-16 | JBU1807 | BNH → BNA | Jul 16, 14:35 UTC | Jul 16, 16:44 UTC | 2h 10m |
| 2026-07-16 | JBU1192 | TPA → BOS | Jul 16, 10:35 UTC | Jul 16, 13:15 UTC | 2h 40m |
| 2026-07-16 | JBU2725 | JFK → TPA | Jul 16, 01:10 UTC | Jul 16, 03:30 UTC | 2h 20m |
| 2026-07-15 | JBU237 | JFK → JFK | Jul 15, 14:00 UTC | Jul 15, 22:15 UTC | 8h 15m |
| 2026-07-15 | JBU185 | JFK → RDU | Jul 15, 00:50 UTC | Jul 15, 01:55 UTC | 1h 5m |
| 2026-07-15 | JBU185 | JFK → RDU | Jul 15, 00:49 UTC | Jul 15, 23:00 UTC | 22h 11m |
| 2026-07-14 | JBU2286 | - | Jul 14, 21:55 UTC | Jul 14, 23:15 UTC | 1h 19m |
| 2026-07-14 | JBU2785 | JFK → RDU | Jul 14, 19:40 UTC | Jul 14, 20:50 UTC | 1h 10m |
| 2026-07-14 | JBU92 | MVY → JFK | Jul 14, 17:45 UTC | Jul 14, 18:25 UTC | 40m |
| 2026-07-14 | JBU2091 | - | Jul 14, 15:30 UTC | Jul 14, 16:10 UTC | 40m |
| 2026-07-14 | JBU286 | - | Jul 14, 13:05 UTC | Jul 14, 14:20 UTC | 1h 15m |
| 2026-07-13 | JBU204 | BDA → BOS | Jul 13, 15:58 UTC | Jul 14, 14:25 UTC | 22h 28m |
| 2026-07-13 | JBU203 | BOS → BDA | Jul 13, 12:42 UTC | Jul 14, 02:45 UTC | 14h 4m |
| 2026-07-13 | JBU250 | SAV → BOS | Jul 13, 01:49 UTC | Jul 14, 01:00 UTC | 23h 12m |
| 2026-07-12 | JBU349 | BOS → SAV | Jul 12, 21:51 UTC | Jul 13, 21:00 UTC | 23h 10m |
| 2026-07-12 | JBU2432 | LGA → ACK | Jul 12, 17:40 UTC | Jul 13, 13:15 UTC | 19h 36m |
| 2026-07-12 | JBU831 | ACK → LGA | Jul 12, 15:33 UTC | Jul 13, 13:15 UTC | 21h 43m |
| 2026-07-12 | JBU1786 | PIT → BOS | Jul 12, 11:03 UTC | Jul 13, 05:10 UTC | 18h 8m |
| 2026-07-11 | JBU1055 | BOS → DCA | Jul 11, 15:02 UTC | Jul 12, 12:20 UTC | 21h 19m |
| 2026-07-10 | JBU400 | MSY → BOS | Jul 10, 20:07 UTC | Jul 11, 18:25 UTC | 22h 19m |
| 2026-07-10 | JBU401 | BOS → MSY | Jul 10, 15:55 UTC | Jul 10, 18:55 UTC | 3h 0m |
| 2026-07-10 | JBU401 | BOS → MSY | Jul 10, 15:54 UTC | Jul 11, 15:00 UTC | 23h 7m |
| 2026-07-10 | JBU1286 | - | Jul 10, 13:15 UTC | Jul 10, 14:35 UTC | 1h 20m |
| 2026-07-10 | JBU1285 | - | Jul 10, 10:35 UTC | Jul 10, 11:50 UTC | 1h 15m |
| 2026-07-10 | JBU1318 | JFK → BOS | Jul 10, 06:10 UTC | Jul 10, 06:45 UTC | 35m |
| 2026-07-09 | JBU1963 | - | Jul 9, 23:05 UTC | Jul 9, 23:40 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 N3304J page for operator, model, and routing details .