sensors Mode-S transponder
AD3CDF
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N952JB · AIRBUS A-321 · operated by JET BLUE AIRWAYS CORP
- Hex
- AD3CDF
- Octal
- 53236337
- Decimal
- 11,353,311
- Country
- US
- Tail
- N952JB
- Type
- A321
- Flights observed
- 291
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- Jul 26, 20:25 UTC
Current position
Country allocation
The ICAO 24-bit address AD3CDF 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 |
|---|---|---|---|
| JBU1348 | JetBlue Airways | 13 | 2026-07-21 |
| JBU503 | JetBlue Airways | 9 | 2026-07-22 |
| JBU1347 | - | 9 | 2026-07-21 |
| JBU1161 | JetBlue Airways | 7 | 2026-05-14 |
| JBU1004 | - | 7 | 2026-07-07 |
| JBU1 | JetBlue Airways | 7 | 2026-07-08 |
| JBU862 | JetBlue Airways | 6 | 2026-05-15 |
| JBU165 | JetBlue Airways | 6 | 2026-05-13 |
| JBU1603 | - | 6 | 2026-07-17 |
| JBU92 | JetBlue Airways | 5 | 2026-04-17 |
| JBU373 | JetBlue Airways | 5 | 2026-06-29 |
| JBU2173 | - | 5 | 2026-07-01 |
| JBU1604 | - | 5 | 2026-07-21 |
| JBU821 | JetBlue Airways | 4 | 2026-04-21 |
| JBU771 | JetBlue Airways | 4 | 2026-06-05 |
| JBU757 | JetBlue Airways | 4 | 2026-06-23 |
| JBU474 | - | 4 | 2026-06-29 |
| JBU398 | JetBlue Airways | 4 | 2026-07-24 |
| JBU391 | JetBlue Airways | 4 | 2026-04-17 |
| JBU303 | JetBlue Airways | 4 | 2026-07-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | JBU169 | BDL → FLL | Jul 26, 11:50 UTC | Jul 26, 20:25 UTC | 8h 35m |
| 2026-07-25 | JBU2023 | STI → BOS | Jul 25, 19:23 UTC | Jul 26, 12:40 UTC | 17h 18m |
| 2026-07-25 | JBU1323 | BOS → PBI | Jul 25, 02:25 UTC | Jul 25, 03:20 UTC | 55m |
| 2026-07-25 | JBU1323 | BOS → PBI | Jul 25, 02:25 UTC | Jul 25, 20:25 UTC | 18h 0m |
| 2026-07-24 | JBU398 | SEA → BOS | Jul 24, 19:35 UTC | Jul 25, 00:15 UTC | 4h 40m |
| 2026-07-24 | JBU397 | BOS → ATL | Jul 24, 11:30 UTC | Jul 24, 17:15 UTC | 5h 45m |
| 2026-07-23 | JBU724 | STI → BOS | Jul 23, 09:49 UTC | Jul 24, 02:20 UTC | 16h 31m |
| 2026-07-22 | JBU503 | JFK → SJU | Jul 22, 18:35 UTC | Jul 22, 18:55 UTC | 20m |
| 2026-07-22 | JBU503 | JFK → SJU | Jul 22, 15:01 UTC | Jul 23, 13:40 UTC | 22h 39m |
| 2026-07-22 | JBU503 | JFK → SJU | Jul 22, 15:05 UTC | Jul 22, 16:25 UTC | 1h 20m |
| 2026-07-22 | JBU303 | IAD → LGB | Jul 22, 03:12 UTC | Jul 22, 04:05 UTC | 53m |
| 2026-07-22 | JBU2904 | SJU → JFK | Jul 22, 03:15 UTC | Jul 22, 13:00 UTC | 9h 45m |
| 2026-07-21 | JBU1604 | - | Jul 21, 21:40 UTC | Jul 21, 22:30 UTC | 50m |
| 2026-07-21 | JBU1604 | - | Jul 21, 19:00 UTC | Jul 21, 19:20 UTC | 20m |
| 2026-07-21 | JBU1347 | - | Jul 21, 17:05 UTC | Jul 21, 17:25 UTC | 20m |
| 2026-07-21 | JBU1347 | - | Jul 21, 14:00 UTC | Jul 21, 14:50 UTC | 50m |
| 2026-07-21 | JBU1348 | SJU → DCA | Jul 21, 04:20 UTC | Jul 21, 06:10 UTC | 1h 50m |
| 2026-07-20 | JBU2137 | JFK → STI | Jul 20, 09:14 UTC | Jul 21, 06:25 UTC | 21h 11m |
| 2026-07-19 | JBU852 | CUN → JFK | Jul 19, 16:48 UTC | Jul 20, 10:20 UTC | 17h 33m |
| 2026-07-19 | JBU1104 | SJU → JFK | Jul 19, 01:41 UTC | Jul 19, 21:20 UTC | 19h 40m |
| 2026-07-18 | JBU1347 | DCA → SJU | Jul 18, 13:22 UTC | Jul 19, 11:45 UTC | 22h 24m |
| 2026-07-17 | JBU1348 | SJU → DCA | Jul 17, 21:49 UTC | Jul 18, 16:45 UTC | 18h 57m |
| 2026-07-17 | JBU1603 | - | Jul 17, 15:49 UTC | Jul 17, 16:15 UTC | 25m |
| 2026-07-17 | JBU1603 | JFK → SJU | Jul 17, 12:57 UTC | Jul 18, 01:25 UTC | 12h 28m |
| 2026-07-17 | JBU1603 | - | Jul 17, 13:00 UTC | Jul 17, 13:35 UTC | 35m |
| 2026-07-17 | JBU264 | SEA → JFK | Jul 17, 06:15 UTC | Jul 17, 10:50 UTC | 4h 35m |
| 2026-07-16 | JBU869 | JFK → DEN | Jul 16, 10:29 UTC | Jul 17, 09:45 UTC | 23h 16m |
| 2026-07-16 | JBU860 | KIN → JFK | Jul 16, 01:44 UTC | Jul 16, 23:44 UTC | 22h 1m |
| 2026-07-15 | JBU859 | JFK → JFK | Jul 15, 20:40 UTC | Jul 16, 05:00 UTC | 8h 20m |
| 2026-07-15 | JBU1436 | JFK → JFK | Jul 15, 09:15 UTC | Jul 15, 17:25 UTC | 8h 10m |
| 2026-07-14 | JBU1692 | - | Jul 14, 20:10 UTC | Jul 15, 00:45 UTC | 4h 34m |
| 2026-07-14 | JBU1691 | - | Jul 14, 13:30 UTC | Jul 14, 16:00 UTC | 2h 30m |
| 2026-07-14 | JBU162 | - | Jul 14, 06:05 UTC | Jul 14, 11:20 UTC | 5h 15m |
| 2026-07-13 | JBU2958 | AUA → JFK | Jul 13, 15:46 UTC | Jul 14, 13:45 UTC | 22h 0m |
| 2026-07-13 | JBU1936 | STI → JFK | Jul 13, 03:11 UTC | Jul 14, 01:45 UTC | 22h 35m |
| 2026-07-12 | JBU380 | MBJ → JFK | Jul 12, 15:52 UTC | Jul 13, 14:15 UTC | 22h 24m |
| 2026-07-12 | JBU1179 | - | Jul 12, 10:55 UTC | Jul 12, 13:25 UTC | 2h 30m |
| 2026-07-12 | JBU1179 | JFK → MBJ | Jul 12, 10:53 UTC | Jul 13, 09:45 UTC | 22h 53m |
| 2026-07-11 | JBU105 | EWR → FLL | Jul 11, 12:16 UTC | Jul 12, 11:45 UTC | 23h 30m |
| 2026-07-11 | JBU8301 | JFK → EWR | Jul 11, 09:10 UTC | Jul 11, 09:40 UTC | 30m |
| 2026-07-11 | JBU8301 | JFK → EWR | Jul 11, 09:10 UTC | Jul 12, 06:10 UTC | 21h 1m |
| 2026-07-10 | JBU602 | - | Jul 10, 16:40 UTC | Jul 10, 18:55 UTC | 2h 15m |
| 2026-07-09 | JBU1692 | LIR → JFK | Jul 9, 20:15 UTC | Jul 10, 18:55 UTC | 22h 40m |
| 2026-07-09 | JBU264 | SEA → JFK | Jul 9, 05:59 UTC | Jul 10, 01:55 UTC | 19h 56m |
| 2026-07-08 | JBU1 | JFK → FLL | Jul 8, 11:10 UTC | Jul 8, 13:30 UTC | 2h 20m |
| 2026-07-08 | JBU1 | JFK → FLL | Jul 8, 11:07 UTC | Jul 9, 09:45 UTC | 22h 38m |
| 2026-07-07 | JBU1004 | - | Jul 7, 02:30 UTC | Jul 7, 03:50 UTC | 1h 20m |
| 2026-07-07 | JBU1004 | - | Jul 7, 00:10 UTC | Jul 7, 00:20 UTC | 10m |
| 2026-07-06 | JBU1603 | - | Jul 6, 16:55 UTC | Jul 6, 20:25 UTC | 3h 30m |
| 2026-07-06 | JBU8428 | BOS → SYR | Jul 6, 14:00 UTC | Jul 6, 14:45 UTC | 45m |
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 N952JB page for operator, model, and routing details .