sensors Mode-S transponder
AD4F72
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N957JB · AIRBUS A-321 · operated by JET BLUE AIRWAYS CORP
- Hex
- AD4F72
- Octal
- 53247562
- Decimal
- 11,358,066
- Country
- US
- Tail
- N957JB
- Type
- A321
- Flights observed
- 281
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- Jul 26, 20:40 UTC
Last known position
Country allocation
The ICAO 24-bit address AD4F72 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 |
|---|---|---|---|
| JBU58 | JetBlue Airways | 6 | 2026-06-16 |
| JBU162 | - | 6 | 2026-07-15 |
| JBU887 | - | 5 | 2026-07-15 |
| JBU882 | JetBlue Airways | 5 | 2026-06-05 |
| JBU2709 | JetBlue Airways | 5 | 2026-07-22 |
| JBU169 | JetBlue Airways | 5 | 2026-06-20 |
| JBU161 | JetBlue Airways | 5 | 2026-07-23 |
| JBU1603 | JetBlue Airways | 5 | 2026-07-24 |
| JBU1483 | JetBlue Airways | 5 | 2026-05-07 |
| JBU1347 | JetBlue Airways | 5 | 2026-07-25 |
| JBU651 | JetBlue Airways | 4 | 2026-05-02 |
| JBU57 | JetBlue Airways | 4 | 2026-06-16 |
| JBU521 | JetBlue Airways | 4 | 2026-04-14 |
| JBU2052 | - | 4 | 2026-04-16 |
| JBU151 | JetBlue Airways | 4 | 2026-05-27 |
| JBU837 | JetBlue Airways | 3 | 2026-05-20 |
| JBU740 | - | 3 | 2026-07-16 |
| JBU561 | JetBlue Airways | 3 | 2026-05-04 |
| JBU552 | JetBlue Airways | 3 | 2026-04-29 |
| JBU303 | - | 3 | 2026-06-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | JBU1759 | JFK → KIN | Jul 25, 23:25 UTC | Jul 26, 20:40 UTC | 21h 16m |
| 2026-07-25 | JBU1347 | DCA → SJU | Jul 25, 15:25 UTC | Jul 25, 15:50 UTC | 25m |
| 2026-07-25 | JBU1347 | DCA → SJU | Jul 25, 12:20 UTC | Jul 25, 13:20 UTC | 1h 0m |
| 2026-07-25 | JBU1347 | DCA → SJU | Jul 25, 12:15 UTC | Jul 26, 08:30 UTC | 20h 16m |
| 2026-07-24 | JBU1603 | JFK → SJU | Jul 24, 16:00 UTC | Jul 24, 16:20 UTC | 20m |
| 2026-07-24 | JBU1603 | JFK → SJU | Jul 24, 13:00 UTC | Jul 24, 13:45 UTC | 45m |
| 2026-07-24 | JBU1603 | JFK → SJU | Jul 24, 12:55 UTC | Jul 25, 12:30 UTC | 23h 35m |
| 2026-07-23 | JBU1852 | CUN → JFK | Jul 23, 21:05 UTC | Jul 24, 00:20 UTC | 3h 15m |
| 2026-07-23 | JBU161 | JFK → SMF | Jul 23, 00:41 UTC | Jul 24, 00:30 UTC | 23h 49m |
| 2026-07-22 | JBU2709 | BOS → JAX | Jul 22, 12:19 UTC | Jul 23, 10:30 UTC | 22h 11m |
| 2026-07-22 | JBU2709 | BOS → JAX | Jul 22, 12:20 UTC | Jul 22, 16:00 UTC | 3h 40m |
| 2026-07-21 | JBU2137 | JFK → STI | Jul 21, 09:30 UTC | Jul 21, 10:10 UTC | 40m |
| 2026-07-21 | JBU2137 | JFK → STI | Jul 21, 09:26 UTC | Jul 21, 18:00 UTC | 8h 34m |
| 2026-07-20 | JBU1059 | JFK → KIN | Jul 20, 06:15 UTC | Jul 20, 23:45 UTC | 17h 30m |
| 2026-07-19 | JBU852B | CUN → JFK | Jul 19, 20:50 UTC | Jul 20, 00:10 UTC | 3h 20m |
| 2026-07-19 | JBU1851 | JFK → CUN | Jul 19, 15:40 UTC | Jul 19, 19:05 UTC | 3h 25m |
| 2026-07-19 | JBU8392 | TPA → BOS | Jul 19, 10:40 UTC | Jul 19, 12:55 UTC | 2h 15m |
| 2026-07-18 | JBU1473 | FLL → PUJ | Jul 18, 15:08 UTC | Jul 19, 12:55 UTC | 21h 48m |
| 2026-07-18 | JBU1902 | FLL → JFK | Jul 18, 02:55 UTC | Jul 18, 21:10 UTC | 18h 16m |
| 2026-07-17 | JBU710 | SDQ → JFK | Jul 17, 16:13 UTC | Jul 18, 12:50 UTC | 20h 38m |
| 2026-07-17 | JBU2709 | - | Jul 17, 11:00 UTC | Jul 17, 11:39 UTC | 40m |
| 2026-07-17 | JBU2709 | JFK → SDQ | Jul 17, 10:58 UTC | Jul 18, 10:30 UTC | 23h 33m |
| 2026-07-16 | JBU740 | JFK → JFK | Jul 16, 15:00 UTC | Jul 16, 23:59 UTC | 9h 0m |
| 2026-07-16 | JBU536 | - | Jul 16, 12:25 UTC | Jul 16, 13:05 UTC | 40m |
| 2026-07-15 | JBU887 | - | Jul 15, 14:55 UTC | Jul 15, 17:55 UTC | 3h 0m |
| 2026-07-15 | JBU887 | JFK → SXM | Jul 15, 14:50 UTC | Jul 16, 13:10 UTC | 22h 20m |
| 2026-07-15 | JBU162 | - | Jul 15, 06:20 UTC | Jul 15, 11:15 UTC | 4h 55m |
| 2026-07-14 | JBU161 | JFK → SMF | Jul 14, 23:05 UTC | Jul 15, 04:10 UTC | 5h 5m |
| 2026-07-14 | JBU2032 | JFK → JFK | Jul 14, 15:00 UTC | Jul 14, 20:20 UTC | 5h 20m |
| 2026-07-13 | JBU255 | JFK → JFK | Jul 13, 13:20 UTC | Jul 14, 01:40 UTC | 12h 20m |
| 2026-07-12 | JBU1457 | JFK → AUA | Jul 12, 17:18 UTC | Jul 13, 14:05 UTC | 20h 48m |
| 2026-07-12 | JBU1323 | BOS → STI | Jul 12, 02:01 UTC | Jul 12, 23:05 UTC | 21h 5m |
| 2026-07-11 | JBU1844 | BGI → BOS | Jul 11, 17:30 UTC | Jul 12, 15:20 UTC | 21h 51m |
| 2026-07-11 | JBU25 | BOS → BGI | Jul 11, 11:28 UTC | Jul 12, 02:35 UTC | 15h 8m |
| 2026-07-10 | JBU2924 | STI → BOS | Jul 10, 23:01 UTC | Jul 11, 22:30 UTC | 23h 30m |
| 2026-07-10 | JBU2924 | JFK → BOS | Jul 10, 18:10 UTC | Jul 11, 02:15 UTC | 8h 5m |
| 2026-07-10 | JBU904 | - | Jul 10, 14:30 UTC | Jul 10, 15:20 UTC | 50m |
| 2026-07-10 | JBU904 | - | Jul 10, 12:05 UTC | Jul 10, 12:15 UTC | 10m |
| 2026-07-10 | JBU2903 | - | Jul 10, 02:50 UTC | Jul 10, 03:10 UTC | 20m |
| 2026-07-09 | JBU2903 | - | Jul 9, 23:45 UTC | Jul 10, 00:35 UTC | 50m |
| 2026-07-09 | JBU2709 | JFK → JFK | Jul 9, 11:00 UTC | Jul 9, 19:35 UTC | 8h 35m |
| 2026-07-07 | JBU2023 | BOS → STI | Jul 7, 17:33 UTC | Jul 8, 12:10 UTC | 18h 38m |
| 2026-07-07 | JBU2023 | - | Jul 7, 17:35 UTC | Jul 7, 18:05 UTC | 30m |
| 2026-07-07 | JBU2829 | BOS → BOS | Jul 7, 01:30 UTC | Jul 7, 13:20 UTC | 11h 50m |
| 2026-07-06 | JBU574 | - | Jul 6, 18:25 UTC | Jul 6, 18:40 UTC | 15m |
| 2026-07-06 | JBU574 | AUA → BOS | Jul 6, 18:24 UTC | Jul 7, 16:30 UTC | 22h 7m |
| 2026-07-06 | JBU2173 | BOS → AUA | Jul 6, 12:20 UTC | Jul 6, 16:40 UTC | 4h 20m |
| 2026-07-05 | JBU396 | PDX → BOS | Jul 5, 21:35 UTC | Jul 6, 02:20 UTC | 4h 45m |
| 2026-07-05 | JBU395 | - | Jul 5, 14:10 UTC | Jul 5, 19:50 UTC | 5h 40m |
| 2026-07-04 | JBU397 | BOS → SEA | Jul 4, 14:03 UTC | Jul 5, 02:20 UTC | 12h 17m |
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 N957JB page for operator, model, and routing details .