sensors Mode-S transponder
A1A435
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N2047J · AIRBUS A-321neo · operated by UMB BANK NA TRUSTEE
- Hex
- A1A435
- Octal
- 50322065
- Decimal
- 10,593,333
- Country
- US
- Tail
- N2047J
- Type
- A21N
- Flights observed
- 87
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 8h ago
Last known position
Country allocation
The ICAO 24-bit address A1A435 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 |
|---|---|---|---|
| JBU882 | JetBlue Airways | 9 | 2026-04-21 |
| JBU881 | - | 6 | 2026-04-21 |
| JBU836 | JetBlue Airways | 6 | 2026-05-13 |
| JBU1794 | - | 6 | 2026-04-14 |
| JBU2709 | JetBlue Airways | 5 | 2026-05-22 |
| JBU1818 | JetBlue Airways | 5 | 2026-05-04 |
| JBU509 | JetBlue Airways | 4 | 2026-05-19 |
| JBU939 | JetBlue Airways | 3 | 2026-05-08 |
| JBU610 | JetBlue Airways | 3 | 2026-05-06 |
| JBU2210 | JetBlue Airways | 3 | 2026-05-19 |
| JBU965 | JetBlue Airways | 2 | 2026-05-14 |
| JBU662 | JetBlue Airways | 2 | 2026-05-26 |
| JBU264 | JetBlue Airways | 2 | 2026-05-19 |
| JBU1929 | JetBlue Airways | 2 | 2026-05-24 |
| JBU1817 | JetBlue Airways | 2 | 2026-05-01 |
| JBU1793 | JetBlue Airways | 2 | 2026-04-13 |
| JBU1587 | JetBlue Airways | 2 | 2026-04-17 |
| JBU1360 | JetBlue Airways | 2 | 2026-04-23 |
| JBU1188 | JetBlue Airways | 2 | 2026-04-17 |
| JBU1112 | JetBlue Airways | 2 | 2026-04-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | JBU1930 | SDQ → BOS | May 29, 12:25 UTC | May 29, 21:35 UTC | 9h 10m |
| 2026-05-27 | JBU1532 | CTG → JFK | May 27, 13:35 UTC | May 28, 00:45 UTC | 11h 10m |
| 2026-05-26 | JBU662 | BGI → JFK | May 26, 18:32 UTC | May 27, 16:10 UTC | 21h 39m |
| 2026-05-26 | JBU662 | BGI → JFK | May 26, 12:24 UTC | May 26, 23:14 UTC | 10h 50m |
| 2026-05-25 | JBU1533 | JFK → CTG | May 25, 13:55 UTC | May 26, 00:24 UTC | 10h 29m |
| 2026-05-25 | JBU71 | JFK → SLC | May 25, 02:17 UTC | May 26, 00:24 UTC | 22h 8m |
| 2026-05-24 | JBU2510 | SDQ → JFK | May 24, 20:29 UTC | May 25, 16:25 UTC | 19h 56m |
| 2026-05-24 | JBU1929 | BOS → SDQ | May 24, 14:30 UTC | May 25, 12:10 UTC | 21h 41m |
| 2026-05-24 | JBU1929 | BOS → SDQ | May 24, 14:30 UTC | May 24, 16:15 UTC | 1h 45m |
| 2026-05-23 | JBU1596 | PUJ → BOS | May 23, 17:20 UTC | May 24, 02:40 UTC | 9h 21m |
| 2026-05-22 | JBU2709 | BOS → JAX | May 22, 12:30 UTC | May 22, 21:20 UTC | 8h 50m |
| 2026-05-19 | JBU2210 | JAX → BOS | May 19, 20:05 UTC | May 19, 23:55 UTC | 3h 50m |
| 2026-05-19 | JBU509 | BOS → SEA | May 19, 14:36 UTC | May 19, 23:55 UTC | 9h 19m |
| 2026-05-19 | JBU264 | SEA → JFK | May 19, 07:00 UTC | May 19, 11:15 UTC | 4h 15m |
| 2026-05-19 | JBU264 | SEA → JFK | May 19, 06:59 UTC | May 19, 23:55 UTC | 16h 56m |
| 2026-05-18 | JBU263 | JFK → SEA | May 18, 22:10 UTC | May 19, 04:00 UTC | 5h 50m |
| 2026-05-14 | JBU965 | BOS → RSW | May 14, 17:02 UTC | May 14, 20:45 UTC | 3h 44m |
| 2026-05-14 | JBU965 | BOS → RSW | May 14, 17:05 UTC | May 15, 05:10 UTC | 12h 5m |
| 2026-05-13 | JBU966 | BOS → ATL | May 13, 14:35 UTC | May 14, 03:00 UTC | 12h 25m |
| 2026-05-13 | JBU836 | MSP → BOS | May 13, 01:17 UTC | May 13, 22:15 UTC | 20h 59m |
| 2026-05-12 | JBU836 | MSP → BOS | May 12, 20:15 UTC | May 13, 04:30 UTC | 8h 15m |
| 2026-05-08 | JBU939 | JFK → SJD | May 8, 13:25 UTC | May 9, 01:05 UTC | 11h 40m |
| 2026-05-07 | JBU939 | JFK → SJD | May 7, 13:40 UTC | May 8, 01:29 UTC | 11h 49m |
| 2026-05-06 | JBU610 | DFW → JFK | May 6, 09:53 UTC | May 6, 13:25 UTC | 3h 32m |
| 2026-05-05 | JBU1009 | BOS → JFK | May 5, 18:57 UTC | May 6, 13:25 UTC | 18h 28m |
| 2026-05-04 | JBU1818 | POS → JFK | May 4, 21:50 UTC | May 5, 02:30 UTC | 4h 40m |
| 2026-05-04 | JBU1818 | POS → JFK | May 4, 21:36 UTC | May 5, 19:55 UTC | 22h 20m |
| 2026-05-04 | JBU2709 | BOS → JAX | May 4, 03:00 UTC | May 4, 03:30 UTC | 30m |
| 2026-05-04 | JBU2709 | BOS → JAX | May 4, 02:57 UTC | May 4, 23:10 UTC | 20h 14m |
| 2026-05-03 | JBU939 | JFK → SJD | May 3, 12:25 UTC | May 4, 00:25 UTC | 12h 0m |
| 2026-05-02 | JBU2210 | JAX → BOS | May 2, 19:59 UTC | May 3, 16:40 UTC | 20h 41m |
| 2026-05-02 | JBU509 | BOS → SEA | May 2, 14:30 UTC | May 2, 23:20 UTC | 8h 50m |
| 2026-05-01 | JBU1817 | JFK → POS | May 1, 16:03 UTC | May 2, 15:15 UTC | 23h 13m |
| 2026-05-01 | JBU610 | DFW → JFK | May 1, 09:55 UTC | May 2, 02:45 UTC | 16h 51m |
| 2026-04-30 | JBU2210 | JAX → BOS | Apr 30, 19:53 UTC | May 1, 19:15 UTC | 23h 22m |
| 2026-04-30 | JBU509 | BOS → SEA | Apr 30, 14:25 UTC | Apr 30, 23:30 UTC | 9h 5m |
| 2026-04-30 | JBU2724 | MCO → DCA | Apr 30, 06:25 UTC | Apr 30, 10:55 UTC | 4h 30m |
| 2026-04-29 | JBU610 | DFW → JFK | Apr 29, 09:58 UTC | Apr 30, 09:15 UTC | 23h 17m |
| 2026-04-29 | JBU709 | JFK → SJU | Apr 29, 01:40 UTC | Apr 29, 13:25 UTC | 11h 45m |
| 2026-04-28 | JBU1483 | JFK → MCO | Apr 28, 11:20 UTC | Apr 29, 02:09 UTC | 14h 50m |
| 2026-04-28 | JBU836 | MSP → BOS | Apr 28, 01:02 UTC | Apr 28, 17:15 UTC | 16h 13m |
| 2026-04-27 | JBU836 | MSP → BOS | Apr 27, 19:30 UTC | Apr 28, 04:30 UTC | 9h 0m |
| 2026-04-26 | JBU509 | BOS → SEA | Apr 26, 14:42 UTC | Apr 27, 09:35 UTC | 18h 53m |
| 2026-04-26 | JBU836 | MSP → BOS | Apr 26, 00:46 UTC | Apr 26, 23:15 UTC | 22h 30m |
| 2026-04-25 | JBU836 | MSP → BOS | Apr 25, 20:00 UTC | Apr 26, 03:55 UTC | 7h 55m |
| 2026-04-25 | JBU1818 | POS → JFK | Apr 25, 00:15 UTC | Apr 25, 04:50 UTC | 4h 35m |
| 2026-04-25 | JBU1818 | POS → JFK | Apr 25, 00:04 UTC | Apr 25, 20:25 UTC | 20h 21m |
| 2026-04-24 | JBU1817 | JFK → POS | Apr 24, 18:00 UTC | Apr 24, 22:05 UTC | 4h 5m |
| 2026-04-23 | JBU1360 | KIN → JFK | Apr 23, 19:27 UTC | Apr 24, 18:20 UTC | 22h 53m |
| 2026-04-23 | JBU1360 | KIN → JFK | Apr 23, 14:15 UTC | Apr 23, 23:00 UTC | 8h 45m |
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 N2047J page for operator, model, and routing details .