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
- 162
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 2h ago
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 | JetBlue Airways | 4 | 2026-04-21 |
| JBU1798 | JetBlue Airways | 4 | 2026-04-17 |
| JBU1698 | JetBlue Airways | 4 | 2026-04-23 |
| JBU472 | JetBlue Airways | 3 | 2026-04-21 |
| JBU2895 | JetBlue Airways | 3 | 2026-05-21 |
| JBU1797 | JetBlue Airways | 3 | 2026-04-17 |
| JBU1742 | JetBlue Airways | 3 | 2026-05-27 |
| JBU993 | JetBlue Airways | 2 | 2026-04-30 |
| JBU87 | JetBlue Airways | 2 | 2026-05-25 |
| JBU791 | JetBlue Airways | 2 | 2026-05-01 |
| JBU635 | JetBlue Airways | 2 | 2026-05-27 |
| JBU544 | JetBlue Airways | 2 | 2026-05-20 |
| JBU525 | JetBlue Airways | 2 | 2026-05-08 |
| JBU506 | JetBlue Airways | 2 | 2026-05-14 |
| JBU454 | JetBlue Airways | 2 | 2026-04-27 |
| JBU38 | JetBlue Airways | 2 | 2026-04-16 |
| JBU2722 | JetBlue Airways | 2 | 2026-05-23 |
| JBU271 | JetBlue Airways | 2 | 2026-04-17 |
| JBU2266 | JetBlue Airways | 2 | 2026-04-25 |
| JBU2202 | JetBlue Airways | 2 | 2026-04-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | JBU2072 | BQN → FLL | May 29, 17:45 UTC | May 29, 22:55 UTC | 5h 10m |
| 2026-05-29 | JBU1471 | BOS → CUN | May 29, 12:25 UTC | May 29, 15:00 UTC | 2h 35m |
| 2026-05-28 | JBU1823 | JFK → LAX | May 28, 17:32 UTC | May 29, 15:00 UTC | 21h 28m |
| 2026-05-28 | JBU1131 | CHS → FLL | May 28, 15:01 UTC | May 29, 14:15 UTC | 23h 14m |
| 2026-05-28 | JBU2154 | DCA → BOS | May 28, 01:05 UTC | May 29, 00:15 UTC | 23h 10m |
| 2026-05-27 | JBU1743 | JAX → SJU | May 27, 21:30 UTC | May 27, 22:15 UTC | 45m |
| 2026-05-27 | JBU1742 | SJU → JAX | May 27, 19:10 UTC | May 27, 20:20 UTC | 1h 10m |
| 2026-05-27 | JBU1742 | SJU → JAX | May 27, 17:35 UTC | May 27, 17:50 UTC | 15m |
| 2026-05-27 | JBU1742 | SJU → JAX | May 27, 17:30 UTC | May 28, 16:15 UTC | 22h 45m |
| 2026-05-27 | JBU635 | BOS → SFO | May 27, 14:55 UTC | May 27, 15:15 UTC | 20m |
| 2026-05-27 | JBU635 | BOS → SFO | May 27, 11:30 UTC | May 27, 12:40 UTC | 1h 10m |
| 2026-05-26 | JBU2050 | PSP → JFK | May 26, 19:40 UTC | May 26, 21:59 UTC | 2h 20m |
| 2026-05-26 | JBU2049 | BUF → RSW | May 26, 15:39 UTC | May 26, 18:14 UTC | 2h 35m |
| 2026-05-25 | JBU87 | ALB → FLL | May 25, 14:10 UTC | May 25, 16:50 UTC | 2h 40m |
| 2026-05-25 | JBU87 | ALB → FLL | May 25, 14:10 UTC | May 26, 01:24 UTC | 11h 15m |
| 2026-05-25 | JBU1906 | TPA → FLL | May 25, 12:05 UTC | May 25, 12:40 UTC | 35m |
| 2026-05-24 | JBU1175 | FLL → KIN | May 24, 20:35 UTC | May 24, 21:50 UTC | 1h 15m |
| 2026-05-24 | JBU1176 | LAX → JFK | May 24, 17:20 UTC | May 24, 19:10 UTC | 1h 50m |
| 2026-05-24 | JBU1131 | CHS → FLL | May 24, 14:50 UTC | May 24, 16:05 UTC | 1h 15m |
| 2026-05-24 | JBU1130 | FLL → CHS | May 24, 12:10 UTC | May 24, 13:20 UTC | 1h 10m |
| 2026-05-23 | JBU865 | BOS → RSW | May 23, 22:15 UTC | May 24, 00:55 UTC | 2h 40m |
| 2026-05-23 | JBU2722 | MSY → FLL | May 23, 04:20 UTC | May 24, 00:55 UTC | 20h 36m |
| 2026-05-23 | JBU2722 | MSY → FLL | May 23, 04:20 UTC | May 23, 05:45 UTC | 1h 25m |
| 2026-05-23 | JBU2823 | BOS → STI | May 23, 01:30 UTC | May 23, 03:10 UTC | 1h 40m |
| 2026-05-22 | JBU1947 | MCO → FLL | May 22, 23:05 UTC | May 22, 23:50 UTC | 45m |
| 2026-05-22 | JBU987 | ORH → MCO | May 22, 18:30 UTC | May 22, 21:20 UTC | 2h 50m |
| 2026-05-22 | JBU588 | LAX → BOS | May 22, 14:45 UTC | May 22, 17:05 UTC | 2h 20m |
| 2026-05-22 | JBU351 | BOS → MCO | May 22, 10:25 UTC | May 22, 13:00 UTC | 2h 35m |
| 2026-05-21 | JBU2895 | BOS → PUJ | May 21, 10:55 UTC | May 21, 14:00 UTC | 3h 5m |
| 2026-05-21 | JBU2895 | BOS → PUJ | May 21, 10:52 UTC | May 22, 10:15 UTC | 23h 24m |
| 2026-05-20 | JBU1245 | BOS → CLT | May 20, 15:00 UTC | May 21, 14:00 UTC | 23h 1m |
| 2026-05-20 | JBU544 | PBI → ISP | May 20, 11:32 UTC | May 21, 01:15 UTC | 13h 44m |
| 2026-05-20 | JBU1053 | JFK → PBI | May 20, 00:41 UTC | May 21, 00:15 UTC | 23h 35m |
| 2026-05-20 | JBU1053 | JFK → PBI | May 20, 00:45 UTC | May 20, 02:55 UTC | 2h 10m |
| 2026-05-19 | JBU1604 | SJU → JFK | May 19, 02:40 UTC | May 19, 06:10 UTC | 3h 30m |
| 2026-05-19 | JBU1604 | SJU → JFK | May 19, 02:39 UTC | May 20, 02:15 UTC | 23h 36m |
| 2026-05-19 | JBU1903 | JFK → SJU | May 19, 01:00 UTC | May 19, 01:25 UTC | 25m |
| 2026-05-18 | JBU1903 | JFK → SJU | May 18, 21:35 UTC | May 18, 22:50 UTC | 1h 15m |
| 2026-05-18 | JBU1716 | BUF → BOS | May 18, 17:20 UTC | May 18, 19:30 UTC | 2h 9m |
| 2026-05-18 | JBU1715 | JFK → LAX | May 18, 14:00 UTC | May 18, 15:50 UTC | 1h 50m |
| 2026-05-18 | JBU1715 | JFK → LAX | May 18, 13:40 UTC | May 18, 13:55 UTC | 15m |
| 2026-05-18 | JBU1678 | JAX → JFK | May 18, 10:10 UTC | May 18, 12:05 UTC | 1h 55m |
| 2026-05-17 | JBU1285 | ROC → JFK | May 17, 10:33 UTC | May 18, 10:15 UTC | 23h 43m |
| 2026-05-16 | JBU1642 | BZE → JFK | May 16, 18:34 UTC | May 17, 16:10 UTC | 21h 37m |
| 2026-05-16 | JBU1641 | JFK → BZE | May 16, 13:21 UTC | May 16, 16:15 UTC | 2h 55m |
| 2026-05-16 | JBU1641 | JFK → BZE | May 16, 13:16 UTC | May 17, 11:25 UTC | 22h 10m |
| 2026-05-16 | JBU1794 | SJO → JFK | May 16, 06:41 UTC | May 16, 11:11 UTC | 4h 30m |
| 2026-05-15 | JBU54 | PBI → JFK | May 15, 10:02 UTC | May 16, 07:20 UTC | 21h 19m |
| 2026-05-14 | JBU543 | EWR → PBI | May 14, 21:16 UTC | May 15, 12:25 UTC | 15h 10m |
| 2026-05-14 | JBU506 | FLL → EWR | May 14, 16:15 UTC | May 14, 18:35 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 .