sensors Mode-S transponder
A1A0A1
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N2038J · AIRBUS A-321neo · operated by JETBLUE AIRWAYS CORP
- Hex
- A1A0A1
- Octal
- 50320241
- Decimal
- 10,592,417
- Country
- US
- Tail
- N2038J
- Type
- A21N
- Flights observed
- 64
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 29d ago
Last known position
Country allocation
The ICAO 24-bit address A1A0A1 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 |
|---|---|---|---|
| JBU1328 | JetBlue Airways | 7 | 2026-04-24 |
| JBU596 | JetBlue Airways | 6 | 2026-04-25 |
| JBU528 | JetBlue Airways | 4 | 2026-04-17 |
| JBU1817 | JetBlue Airways | 3 | 2026-04-23 |
| JBU1383 | JetBlue Airways | 3 | 2026-04-24 |
| JBU1329 | JetBlue Airways | 3 | 2026-04-25 |
| JBU965 | JetBlue Airways | 2 | 2026-04-19 |
| JBU939 | JetBlue Airways | 2 | 2026-04-20 |
| JBU8529 | JetBlue Airways | 2 | 2026-04-27 |
| JBU8521 | JetBlue Airways | 2 | 2026-04-28 |
| JBU597 | JetBlue Airways | 2 | 2026-04-16 |
| JBU509 | JetBlue Airways | 2 | 2026-04-22 |
| JBU505 | JetBlue Airways | 2 | 2026-04-17 |
| JBU1587 | JetBlue Airways | 2 | 2026-04-14 |
| JBU1584 | JetBlue Airways | 2 | 2026-04-21 |
| JBU1256 | JetBlue Airways | 2 | 2026-04-17 |
| JBU1255 | - | 2 | 2026-04-16 |
| JBU1188 | JetBlue Airways | 2 | 2026-04-14 |
| JBU937 | - | 1 | 2026-04-13 |
| JBU851 | JetBlue Airways | 1 | 2026-04-29 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-04-30 | JBU1986 | PIT → BOS | Apr 30, 19:30 UTC | Apr 30, 21:45 UTC | 2h 15m |
| 2026-04-30 | JBU114 | MBJ → MCO | Apr 30, 14:35 UTC | Apr 30, 16:20 UTC | 1h 45m |
| 2026-04-29 | JBU451 | BOS → MCO | Apr 29, 21:22 UTC | Apr 30, 20:15 UTC | 22h 53m |
| 2026-04-29 | JBU851 | JFK → CUN | Apr 29, 11:45 UTC | Apr 30, 00:15 UTC | 12h 30m |
| 2026-04-28 | JBU551 | BOS → MCO | Apr 28, 17:11 UTC | Apr 29, 16:15 UTC | 23h 5m |
| 2026-04-28 | JBU8521 | BOS → JFK | Apr 28, 08:00 UTC | Apr 28, 10:30 UTC | 2h 30m |
| 2026-04-28 | JBU8521 | BOS → JFK | Apr 28, 07:55 UTC | Apr 29, 00:40 UTC | 16h 45m |
| 2026-04-27 | JBU772 | CUN → BOS | Apr 27, 21:45 UTC | Apr 28, 01:30 UTC | 3h 45m |
| 2026-04-27 | JBU8529 | BOS → BDL | Apr 27, 03:40 UTC | Apr 27, 04:15 UTC | 35m |
| 2026-04-27 | JBU8529 | BOS → BDL | Apr 27, 03:37 UTC | Apr 28, 01:40 UTC | 22h 3m |
| 2026-04-26 | JBU537 | JFK → STI | Apr 26, 15:10 UTC | Apr 26, 23:05 UTC | 7h 55m |
| 2026-04-25 | JBU1329 | GUA → JFK | Apr 25, 20:20 UTC | Apr 26, 00:55 UTC | 4h 35m |
| 2026-04-25 | JBU1329 | GUA → JFK | Apr 25, 20:17 UTC | Apr 26, 15:40 UTC | 19h 23m |
| 2026-04-25 | JBU596 | PUJ → BOS | Apr 25, 01:09 UTC | Apr 26, 00:15 UTC | 23h 6m |
| 2026-04-24 | JBU1383 | PWM → LGA | Apr 24, 18:30 UTC | Apr 25, 18:15 UTC | 23h 46m |
| 2026-04-24 | JBU1328 | JFK → GUA | Apr 24, 16:05 UTC | Apr 24, 16:10 UTC | 5m |
| 2026-04-24 | JBU1328 | JFK → GUA | Apr 24, 11:55 UTC | Apr 24, 15:30 UTC | 3h 35m |
| 2026-04-24 | JBU1328 | JFK → GUA | Apr 24, 11:54 UTC | Apr 25, 10:15 UTC | 22h 21m |
| 2026-04-23 | JBU1818 | POS → JFK | Apr 23, 22:05 UTC | Apr 23, 22:15 UTC | 10m |
| 2026-04-23 | JBU1817 | JFK → POS | Apr 23, 18:50 UTC | Apr 23, 20:00 UTC | 1h 10m |
| 2026-04-23 | JBU1817 | JFK → POS | Apr 23, 15:55 UTC | Apr 23, 16:15 UTC | 20m |
| 2026-04-23 | JBU1817 | JFK → POS | Apr 23, 15:51 UTC | Apr 24, 14:15 UTC | 22h 24m |
| 2026-04-23 | JBU610 | DFW → JFK | Apr 23, 01:45 UTC | Apr 23, 13:20 UTC | 11h 35m |
| 2026-04-22 | JBU509 | BOS → SEA | Apr 22, 14:22 UTC | Apr 23, 13:20 UTC | 22h 59m |
| 2026-04-22 | JBU509 | BOS → SEA | Apr 22, 14:25 UTC | Apr 22, 15:00 UTC | 35m |
| 2026-04-21 | JBU1584 | MCO → JFK | Apr 21, 15:20 UTC | Apr 21, 17:35 UTC | 2h 15m |
| 2026-04-21 | JBU1584 | MCO → JFK | Apr 21, 15:15 UTC | Apr 22, 14:15 UTC | 23h 1m |
| 2026-04-21 | JBU1483 | JFK → MCO | Apr 21, 11:10 UTC | Apr 21, 13:20 UTC | 2h 10m |
| 2026-04-20 | JBU939 | JFK → SJD | Apr 20, 12:25 UTC | Apr 20, 16:55 UTC | 4h 31m |
| 2026-04-20 | JBU939 | JFK → SJD | Apr 20, 12:25 UTC | Apr 21, 12:15 UTC | 23h 51m |
| 2026-04-19 | JBU965 | BOS → RSW | Apr 19, 13:45 UTC | Apr 19, 18:20 UTC | 4h 35m |
| 2026-04-19 | JBU965 | BOS → RSW | Apr 19, 13:45 UTC | Apr 20, 01:55 UTC | 12h 10m |
| 2026-04-18 | JBU1329 | GUA → JFK | Apr 18, 20:09 UTC | Apr 19, 18:15 UTC | 22h 6m |
| 2026-04-18 | JBU1380 | FLL → GUA | Apr 18, 15:57 UTC | Apr 19, 14:15 UTC | 22h 18m |
| 2026-04-18 | JBU596 | PUJ → BOS | Apr 18, 03:25 UTC | Apr 18, 04:10 UTC | 45m |
| 2026-04-18 | JBU596 | PUJ → BOS | Apr 18, 01:25 UTC | Apr 18, 03:20 UTC | 1h 55m |
| 2026-04-18 | JBU596 | PUJ → BOS | Apr 18, 01:23 UTC | Apr 19, 00:15 UTC | 22h 53m |
| 2026-04-17 | JBU1256 | GYE → FLL | Apr 17, 21:25 UTC | Apr 17, 21:50 UTC | 25m |
| 2026-04-17 | JBU1256 | GYE → FLL | Apr 17, 19:40 UTC | Apr 17, 20:00 UTC | 20m |
| 2026-04-17 | JBU505 | EWR → FLL | Apr 17, 11:20 UTC | Apr 17, 12:05 UTC | 45m |
| 2026-04-17 | JBU505 | EWR → FLL | Apr 17, 09:35 UTC | Apr 17, 11:15 UTC | 1h 40m |
| 2026-04-17 | JBU528 | MCO → EWR | Apr 17, 01:20 UTC | Apr 17, 03:15 UTC | 1h 55m |
| 2026-04-16 | JBU528 | MCO → EWR | Apr 16, 23:20 UTC | Apr 17, 01:15 UTC | 1h 55m |
| 2026-04-16 | JBU1255 | - | Apr 16, 15:30 UTC | Apr 16, 17:10 UTC | 1h 40m |
| 2026-04-16 | JBU597 | BOS → ATL | Apr 16, 11:09 UTC | Apr 16, 12:49 UTC | 1h 40m |
| 2026-04-16 | JBU597 | BOS → ATL | Apr 16, 10:12 UTC | Apr 16, 11:04 UTC | 53m |
| 2026-04-16 | JBU596 | PUJ → BOS | Apr 16, 03:09 UTC | Apr 16, 03:49 UTC | 40m |
| 2026-04-16 | JBU596 | PUJ → BOS | Apr 16, 01:15 UTC | Apr 16, 03:04 UTC | 1h 50m |
| 2026-04-15 | JBU1383 | PWM → LGA | Apr 15, 19:05 UTC | Apr 15, 20:35 UTC | 1h 30m |
| 2026-04-15 | JBU1383 | PWM → LGA | Apr 15, 18:20 UTC | Apr 15, 19:00 UTC | 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 N2038J page for operator, model, and routing details .