sensors Mode-S transponder
A4B6B6
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N4022J · AIRBUS A-321neo · operated by JETBLUE AIRWAYS CORP
- Hex
- A4B6B6
- Octal
- 51133266
- Decimal
- 10,794,678
- Country
- US
- Tail
- N4022J
- Type
- A21N
- Flights observed
- 113
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address A4B6B6 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 |
|---|---|---|---|
| JBU31 | JetBlue Airways | 8 | 2026-05-28 |
| JBU20 | JetBlue Airways | 8 | 2026-05-21 |
| JBU323 | JetBlue Airways | 7 | 2026-04-16 |
| JBU1107 | JetBlue Airways | 7 | 2026-05-29 |
| JBU7 | JetBlue Airways | 6 | 2026-05-21 |
| JBU32 | JetBlue Airways | 5 | 2026-05-28 |
| JBU2260 | JetBlue Airways | 5 | 2026-05-27 |
| JBU2220 | JetBlue Airways | 5 | 2026-05-23 |
| JBU2124 | JetBlue Airways | 5 | 2026-04-17 |
| JBU1620 | JetBlue Airways | 5 | 2026-05-18 |
| JBU524 | JetBlue Airways | 4 | 2026-04-15 |
| JBU2261 | JetBlue Airways | 4 | 2026-04-27 |
| JBU1515 | JetBlue Airways | 4 | 2026-04-17 |
| JBU1216 | JetBlue Airways | 4 | 2026-04-18 |
| JBU2223 | JetBlue Airways | 3 | 2026-04-14 |
| JBU1621 | JetBlue Airways | 3 | 2026-05-19 |
| JBU1408 | JetBlue Airways | 3 | 2026-05-01 |
| JBU834 | JetBlue Airways | 2 | 2026-05-26 |
| JBU724 | JetBlue Airways | 2 | 2026-04-12 |
| JBU523 | JetBlue Airways | 2 | 2026-05-04 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | JBU1107 | JFK → LHR | May 29, 13:20 UTC | May 29, 19:55 UTC | 6h 35m |
| 2026-05-29 | JBU1107 | JFK → LHR | May 29, 13:18 UTC | May 29, 19:55 UTC | 6h 38m |
| 2026-05-29 | JBU1024 | FLL → JFK | May 29, 05:45 UTC | May 29, 10:40 UTC | 4h 55m |
| 2026-05-28 | JBU32 | AMS → BOS | May 28, 09:56 UTC | May 29, 09:30 UTC | 23h 34m |
| 2026-05-28 | JBU31 | BOS → AMS | May 28, 00:50 UTC | May 28, 23:30 UTC | 22h 40m |
| 2026-05-27 | JBU2260 | MAD → BOS | May 27, 13:25 UTC | May 28, 11:30 UTC | 22h 5m |
| 2026-05-27 | JBU2260 | MAD → BOS | May 27, 13:25 UTC | May 28, 11:30 UTC | 22h 5m |
| 2026-05-26 | JBU834 | SFO → BOS | May 26, 20:34 UTC | May 27, 01:29 UTC | 4h 55m |
| 2026-05-26 | JBU834 | SFO → BOS | May 26, 20:30 UTC | May 27, 19:30 UTC | 23h 0m |
| 2026-05-26 | JBU1333 | BOS → SFO | May 26, 12:35 UTC | May 26, 18:40 UTC | 6h 5m |
| 2026-05-25 | JBU734 | SFO → BOS | May 25, 20:34 UTC | May 26, 01:34 UTC | 5h 0m |
| 2026-05-25 | JBU1833 | BOS → SFO | May 25, 12:35 UTC | May 25, 18:30 UTC | 5h 55m |
| 2026-05-24 | JBU223 | JFK → LAX | May 24, 11:15 UTC | May 24, 16:50 UTC | 5h 35m |
| 2026-05-24 | JBU223 | JFK → LAX | May 24, 11:11 UTC | May 25, 05:55 UTC | 18h 44m |
| 2026-05-23 | JBU2220 | LHR → JFK | May 23, 07:50 UTC | May 23, 15:15 UTC | 7h 25m |
| 2026-05-22 | JBU1107 | JFK → LHR | May 22, 13:05 UTC | May 22, 19:15 UTC | 6h 10m |
| 2026-05-22 | JBU1107 | JFK → LHR | May 22, 13:02 UTC | May 23, 09:10 UTC | 20h 8m |
| 2026-05-21 | JBU20 | LHR → JFK | May 21, 11:15 UTC | May 21, 18:45 UTC | 7h 30m |
| 2026-05-21 | JBU7 | JFK → LHR | May 21, 02:15 UTC | May 21, 08:50 UTC | 6h 35m |
| 2026-05-19 | JBU8419 | BOS → JFK | May 19, 19:05 UTC | May 19, 19:45 UTC | 40m |
| 2026-05-19 | JBU1621 | LHR → BOS | May 19, 08:00 UTC | May 19, 14:55 UTC | 6h 55m |
| 2026-05-18 | JBU1620 | BOS → LHR | May 18, 23:55 UTC | May 19, 06:10 UTC | 6h 15m |
| 2026-05-18 | JBU32 | AMS → BOS | May 18, 09:40 UTC | May 18, 11:30 UTC | 1h 50m |
| 2026-05-18 | JBU32 | AMS → BOS | May 18, 09:36 UTC | May 19, 09:15 UTC | 23h 39m |
| 2026-05-18 | JBU31 | BOS → AMS | May 18, 00:30 UTC | May 18, 07:00 UTC | 6h 30m |
| 2026-05-17 | JBU32 | AMS → BOS | May 17, 09:25 UTC | May 18, 07:10 UTC | 21h 46m |
| 2026-05-17 | JBU31 | BOS → AMS | May 17, 00:26 UTC | May 17, 17:05 UTC | 16h 40m |
| 2026-05-17 | JBU31 | BOS → AMS | May 17, 00:30 UTC | May 17, 06:50 UTC | 6h 20m |
| 2026-05-16 | JBU1621 | LHR → BOS | May 16, 07:45 UTC | May 16, 14:46 UTC | 7h 0m |
| 2026-05-15 | JBU1620 | BOS → LHR | May 15, 23:00 UTC | May 16, 05:30 UTC | 6h 30m |
| 2026-05-14 | JBU31 | BOS → AMS | May 14, 01:08 UTC | May 14, 18:00 UTC | 16h 53m |
| 2026-05-13 | JBU1621 | LHR → BOS | May 13, 07:58 UTC | May 14, 07:30 UTC | 23h 33m |
| 2026-05-12 | JBU1620 | BOS → LHR | May 12, 23:00 UTC | May 13, 15:10 UTC | 16h 11m |
| 2026-05-12 | JBU332 | LGA → BOS | May 12, 08:15 UTC | May 12, 09:30 UTC | 1h 15m |
| 2026-05-12 | JBU332 | LGA → BOS | May 12, 08:16 UTC | May 13, 05:30 UTC | 21h 15m |
| 2026-05-11 | JBU331 | BDL → MCO | May 11, 22:00 UTC | May 12, 05:00 UTC | 7h 0m |
| 2026-05-10 | JBU1634 | JFK → BTV | May 10, 22:49 UTC | May 11, 03:50 UTC | 5h 0m |
| 2026-05-10 | JBU115 | JFK → MSY | May 10, 14:59 UTC | May 10, 20:45 UTC | 5h 45m |
| 2026-05-09 | JBU7 | JFK → LHR | May 9, 01:33 UTC | May 9, 18:40 UTC | 17h 7m |
| 2026-05-08 | JBU20 | LHR → JFK | May 8, 11:14 UTC | May 8, 12:30 UTC | 1h 15m |
| 2026-05-08 | JBU20 | LHR → JFK | May 8, 11:10 UTC | May 9, 08:35 UTC | 21h 25m |
| 2026-05-08 | JBU7 | JFK → LHR | May 8, 01:35 UTC | May 8, 08:14 UTC | 6h 40m |
| 2026-05-07 | JBU20 | LHR → JFK | May 7, 11:20 UTC | May 7, 12:35 UTC | 1h 15m |
| 2026-05-07 | JBU20 | LHR → JFK | May 7, 11:17 UTC | May 8, 08:14 UTC | 20h 58m |
| 2026-05-07 | JBU20 | LHR → JFK | May 7, 11:17 UTC | May 8, 08:14 UTC | 20h 58m |
| 2026-05-07 | JBU7 | JFK → LHR | May 7, 01:45 UTC | May 7, 08:25 UTC | 6h 40m |
| 2026-05-06 | JBU2220 | LHR → JFK | May 6, 07:30 UTC | May 6, 14:55 UTC | 7h 25m |
| 2026-05-06 | JBU2220 | LHR → JFK | May 6, 07:27 UTC | May 7, 03:10 UTC | 19h 43m |
| 2026-05-05 | JBU1107 | JFK → LHR | May 5, 13:10 UTC | May 5, 19:30 UTC | 6h 20m |
| 2026-05-05 | JBU1107 | JFK → LHR | May 5, 13:06 UTC | May 6, 08:45 UTC | 19h 40m |
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 N4022J page for operator, model, and routing details .