sensors Mode-S transponder
A6C781
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N536JB · AIRBUS A-320 · operated by UMB BANK NA TRUSTEE
- Hex
- A6C781
- Octal
- 51543601
- Decimal
- 10,930,049
- Country
- US
- Tail
- N536JB
- Type
- A320
- Flights observed
- 330
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- Jul 26, 22:10 UTC
Last known position
Country allocation
The ICAO 24-bit address A6C781 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 |
|---|---|---|---|
| JBU471 | - | 5 | 2026-07-12 |
| JBU2895 | JetBlue Airways | 5 | 2026-07-23 |
| JBU2421 | JetBlue Airways | 5 | 2026-07-25 |
| JBU2072 | - | 5 | 2026-06-28 |
| JBU1742 | - | 5 | 2026-07-01 |
| JBU1698 | JetBlue Airways | 5 | 2026-06-10 |
| JBU635 | - | 4 | 2026-07-01 |
| JBU2020 | - | 4 | 2026-07-19 |
| JBU1798 | JetBlue Airways | 4 | 2026-04-17 |
| JBU1743 | - | 4 | 2026-07-01 |
| JBU1265 | JetBlue Airways | 4 | 2026-06-05 |
| JBU87 | - | 3 | 2026-07-05 |
| JBU472 | JetBlue Airways | 3 | 2026-04-21 |
| JBU2154 | JetBlue Airways | 3 | 2026-06-13 |
| JBU2119 | - | 3 | 2026-07-11 |
| JBU2097 | JetBlue Airways | 3 | 2026-06-10 |
| JBU1906 | JetBlue Airways | 3 | 2026-05-30 |
| JBU1797 | JetBlue Airways | 3 | 2026-04-17 |
| JBU1471 | - | 3 | 2026-07-11 |
| JBU1433 | JetBlue Airways | 3 | 2026-06-09 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | JBU1889 | EWR → SJU | Jul 26, 15:40 UTC | Jul 26, 22:10 UTC | 6h 31m |
| 2026-07-26 | JBU1889 | EWR → SJU | Jul 26, 15:40 UTC | Jul 26, 22:10 UTC | 6h 31m |
| 2026-07-26 | JBU2144 | LGW → JFK | Jul 26, 11:49 UTC | Jul 26, 22:10 UTC | 10h 22m |
| 2026-07-25 | JBU23 | DCA → MCO | Jul 25, 22:30 UTC | Jul 26, 22:10 UTC | 23h 41m |
| 2026-07-25 | JBU24 | LAX → JFK | Jul 25, 19:18 UTC | Jul 26, 16:30 UTC | 21h 13m |
| 2026-07-25 | JBU2421 | BOS → PBI | Jul 25, 01:10 UTC | Jul 25, 03:45 UTC | 2h 35m |
| 2026-07-25 | JBU2421 | BOS → PBI | Jul 25, 01:08 UTC | Jul 26, 00:15 UTC | 23h 7m |
| 2026-07-24 | JBU257 | BOS → BZN | Jul 24, 13:55 UTC | Jul 24, 23:35 UTC | 9h 40m |
| 2026-07-24 | JBU50 | YVR → BOS | Jul 24, 08:00 UTC | Jul 24, 12:30 UTC | 4h 30m |
| 2026-07-23 | JBU49 | BOS → YVR | Jul 23, 23:25 UTC | Jul 24, 05:35 UTC | 6h 10m |
| 2026-07-23 | JBU2895 | BOS → PUJ | Jul 23, 10:08 UTC | Jul 24, 08:15 UTC | 22h 7m |
| 2026-07-22 | JBU1237 | BOS → DTW | Jul 22, 21:34 UTC | Jul 23, 20:15 UTC | 22h 41m |
| 2026-07-22 | JBU1237 | BOS → DTW | Jul 22, 21:35 UTC | Jul 22, 23:20 UTC | 1h 45m |
| 2026-07-22 | JBU552 | MCO → BOS | Jul 22, 14:50 UTC | Jul 22, 17:20 UTC | 2h 30m |
| 2026-07-22 | JBU1537 | JFK → STI | Jul 22, 01:50 UTC | Jul 22, 04:50 UTC | 3h 0m |
| 2026-07-21 | JBU1578 | JAX → JFK | Jul 21, 23:20 UTC | Jul 22, 00:15 UTC | 55m |
| 2026-07-21 | JBU1578 | JAX → JFK | Jul 21, 17:45 UTC | Jul 21, 20:30 UTC | 2h 45m |
| 2026-07-21 | JBU351 | BOS → MCO | Jul 21, 12:15 UTC | Jul 21, 14:45 UTC | 2h 30m |
| 2026-07-21 | JBU270 | BUR → LAS | Jul 21, 03:40 UTC | Jul 21, 06:35 UTC | 2h 55m |
| 2026-07-20 | JBU482 | SFO → EWR | Jul 20, 23:05 UTC | Jul 21, 01:55 UTC | 2h 49m |
| 2026-07-19 | JBU2020 | FLL → ORH | Jul 19, 16:49 UTC | Jul 20, 04:20 UTC | 11h 32m |
| 2026-07-18 | JBU1371 | LGA → FLL | Jul 18, 21:26 UTC | Jul 19, 20:15 UTC | 22h 50m |
| 2026-07-18 | JBU2421 | - | Jul 18, 00:24 UTC | Jul 19, 00:15 UTC | 23h 52m |
| 2026-07-17 | JBU1159 | BOS → PHL | Jul 17, 11:15 UTC | Jul 18, 03:15 UTC | 16h 1m |
| 2026-07-16 | JBU640 | CLE → BOS | Jul 16, 21:46 UTC | Jul 17, 20:15 UTC | 22h 29m |
| 2026-07-16 | JBU641 | - | Jul 16, 18:55 UTC | Jul 16, 20:29 UTC | 1h 35m |
| 2026-07-16 | JBU197 | BOS → SEA | Jul 16, 00:22 UTC | Jul 16, 23:29 UTC | 23h 8m |
| 2026-07-15 | JBU1018 | JFK → BOS | Jul 15, 14:20 UTC | Jul 16, 14:15 UTC | 23h 55m |
| 2026-07-15 | JBU1018 | JFK → BOS | Jul 15, 14:25 UTC | Jul 15, 15:10 UTC | 45m |
| 2026-07-15 | JBU1284 | MCO → JFK | Jul 15, 00:00 UTC | Jul 15, 02:15 UTC | 2h 15m |
| 2026-07-14 | JBU2937 | - | Jul 14, 18:40 UTC | Jul 14, 21:15 UTC | 2h 35m |
| 2026-07-14 | JBU1142 | - | Jul 14, 14:55 UTC | Jul 14, 17:20 UTC | 2h 25m |
| 2026-07-14 | JBU1067 | - | Jul 14, 11:10 UTC | Jul 14, 13:35 UTC | 2h 25m |
| 2026-07-13 | JBU2148 | - | Jul 13, 13:30 UTC | Jul 13, 15:00 UTC | 1h 30m |
| 2026-07-13 | JBU2148 | CLT → FLL | Jul 13, 13:26 UTC | Jul 14, 12:15 UTC | 22h 50m |
| 2026-07-13 | JBU2149 | - | Jul 13, 02:10 UTC | Jul 13, 03:45 UTC | 1h 35m |
| 2026-07-12 | JBU471 | LGA → FLL | Jul 12, 20:45 UTC | Jul 12, 23:05 UTC | 2h 20m |
| 2026-07-11 | JBU2119 | ORH → FLL | Jul 11, 22:40 UTC | Jul 12, 22:15 UTC | 23h 36m |
| 2026-07-11 | JBU2020 | - | Jul 11, 18:40 UTC | Jul 11, 21:10 UTC | 2h 30m |
| 2026-07-11 | JBU2020 | FLL → ORH | Jul 11, 18:38 UTC | Jul 12, 18:15 UTC | 23h 38m |
| 2026-07-11 | JBU1471 | LGA → FLL | Jul 11, 12:20 UTC | Jul 11, 14:45 UTC | 2h 25m |
| 2026-07-10 | JBU598 | - | Jul 10, 18:40 UTC | Jul 10, 20:45 UTC | 2h 5m |
| 2026-07-10 | JBU499 | LGA → MCO | Jul 10, 14:25 UTC | Jul 10, 16:30 UTC | 2h 5m |
| 2026-07-10 | JBU1072 | - | Jul 10, 10:25 UTC | Jul 10, 12:45 UTC | 2h 20m |
| 2026-07-09 | JBU1473 | - | Jul 9, 14:40 UTC | Jul 9, 16:10 UTC | 1h 30m |
| 2026-07-09 | JBU1473 | FLL → PUJ | Jul 9, 14:39 UTC | Jul 10, 14:15 UTC | 23h 37m |
| 2026-07-08 | JBU1680 | - | Jul 8, 17:55 UTC | Jul 8, 18:15 UTC | 20m |
| 2026-07-08 | JBU1197 | - | Jul 8, 13:50 UTC | Jul 8, 16:25 UTC | 2h 35m |
| 2026-07-08 | JBU1197 | PVD → FLL | Jul 8, 13:45 UTC | Jul 9, 01:55 UTC | 12h 11m |
| 2026-07-08 | JBU1075 | MCO → PVD | Jul 8, 01:55 UTC | Jul 8, 04:15 UTC | 2h 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 N536JB page for operator, model, and routing details .