sensors Mode-S transponder
A9C5C5
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N729JB · AIRBUS A-320 · operated by JETBLUE AIRWAYS CORP
- Hex
- A9C5C5
- Octal
- 52342705
- Decimal
- 11,126,213
- Country
- US
- Tail
- N729JB
- Type
- A320
- Flights observed
- 157
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address A9C5C5 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 |
|---|---|---|---|
| JBU656 | JetBlue Airways | 5 | 2026-05-01 |
| JBU655 | JetBlue Airways | 5 | 2026-05-02 |
| JBU2013 | JetBlue Airways | 5 | 2026-04-27 |
| JBU861 | JetBlue Airways | 4 | 2026-04-23 |
| JBU768 | JetBlue Airways | 4 | 2026-05-02 |
| JBU767 | JetBlue Airways | 3 | 2026-05-02 |
| JBU465 | JetBlue Airways | 3 | 2026-05-07 |
| JBU2404 | JetBlue Airways | 3 | 2026-04-26 |
| JBU1678 | JetBlue Airways | 3 | 2026-05-17 |
| JBU1476 | JetBlue Airways | 3 | 2026-05-12 |
| JBU1344 | JetBlue Airways | 3 | 2026-04-18 |
| JBU1229 | JetBlue Airways | 3 | 2026-05-28 |
| JBU1082 | JetBlue Airways | 3 | 2026-04-16 |
| JBU8450 | JetBlue Airways | 2 | 2026-04-21 |
| JBU722 | JetBlue Airways | 2 | 2026-05-08 |
| JBU547 | JetBlue Airways | 2 | 2026-05-22 |
| JBU395 | JetBlue Airways | 2 | 2026-05-20 |
| JBU374 | JetBlue Airways | 2 | 2026-04-23 |
| JBU2637 | JetBlue Airways | 2 | 2026-04-19 |
| JBU2602 | JetBlue Airways | 2 | 2026-05-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | JBU613 | HPN → FLL | May 29, 23:35 UTC | May 30, 02:00 UTC | 2h 25m |
| 2026-05-29 | JBU1168 | PBI → HPN | May 29, 19:15 UTC | May 29, 22:05 UTC | 2h 50m |
| 2026-05-29 | JBU2143 | JFK → LGW | May 29, 15:10 UTC | May 29, 17:30 UTC | 2h 20m |
| 2026-05-28 | JBU873 | BOS → AUA | May 28, 22:24 UTC | May 29, 21:15 UTC | 22h 52m |
| 2026-05-28 | JBU1230 | CUN → EWR | May 28, 16:47 UTC | May 29, 15:15 UTC | 22h 28m |
| 2026-05-28 | JBU1229 | EWR → CUN | May 28, 11:25 UTC | May 29, 11:15 UTC | 23h 50m |
| 2026-05-28 | JBU1229 | EWR → CUN | May 28, 11:30 UTC | May 28, 15:00 UTC | 3h 30m |
| 2026-05-28 | JBU2128 | MCO → EWR | May 28, 02:15 UTC | May 28, 04:20 UTC | 2h 5m |
| 2026-05-27 | JBU2077 | LGA → FLL | May 27, 17:25 UTC | May 27, 23:30 UTC | 6h 5m |
| 2026-05-27 | JBU1205 | JFK → ORD | May 27, 02:09 UTC | May 27, 14:55 UTC | 12h 45m |
| 2026-05-26 | JBU2078 | PUJ → MCO | May 26, 17:25 UTC | May 26, 23:35 UTC | 6h 10m |
| 2026-05-26 | JBU2548 | FLL → MCO | May 26, 14:55 UTC | May 26, 15:29 UTC | 35m |
| 2026-05-26 | JBU1601 | JFK → FLL | May 26, 10:34 UTC | May 26, 13:04 UTC | 2h 30m |
| 2026-05-25 | JBU164 | SRQ → JFK | May 25, 16:00 UTC | May 25, 18:30 UTC | 2h 30m |
| 2026-05-25 | JBU164 | SRQ → JFK | May 25, 16:00 UTC | May 26, 15:14 UTC | 23h 15m |
| 2026-05-25 | JBU163 | JFK → SRQ | May 25, 12:05 UTC | May 25, 14:30 UTC | 2h 25m |
| 2026-05-24 | JBU255 | JFK → PLS | May 24, 13:55 UTC | May 24, 14:30 UTC | 35m |
| 2026-05-24 | JBU255 | JFK → PLS | May 24, 13:55 UTC | May 25, 13:15 UTC | 23h 20m |
| 2026-05-24 | JBU676 | BDL → JFK | May 24, 11:20 UTC | May 24, 11:50 UTC | 30m |
| 2026-05-23 | JBU2890 | SJU → EWR | May 23, 12:35 UTC | May 24, 02:35 UTC | 14h 1m |
| 2026-05-22 | JBU547 | EWR → PBI | May 22, 18:45 UTC | May 22, 21:05 UTC | 2h 20m |
| 2026-05-22 | JBU547 | EWR → PBI | May 22, 18:43 UTC | May 23, 16:10 UTC | 21h 27m |
| 2026-05-22 | JBU546 | MCO → ISP | May 22, 15:05 UTC | May 22, 17:25 UTC | 2h 20m |
| 2026-05-22 | JBU1076 | MCO → PVD | May 22, 11:15 UTC | May 22, 13:40 UTC | 2h 25m |
| 2026-05-21 | JBU1144 | MCO → EWR | May 21, 15:18 UTC | May 22, 13:15 UTC | 21h 58m |
| 2026-05-21 | JBU819 | JFK → SDQ | May 21, 01:59 UTC | May 22, 01:15 UTC | 23h 17m |
| 2026-05-20 | JBU284 | LGB → LAS | May 20, 15:50 UTC | May 21, 15:15 UTC | 23h 26m |
| 2026-05-20 | JBU395 | HPN → MCO | May 20, 11:42 UTC | May 21, 11:15 UTC | 23h 34m |
| 2026-05-19 | JBU2602 | JFK → BUF | May 19, 20:57 UTC | May 20, 18:00 UTC | 21h 4m |
| 2026-05-19 | JBU1471 | BOS → CUN | May 19, 11:54 UTC | May 20, 00:30 UTC | 12h 36m |
| 2026-05-18 | JBU678 | JAX → JFK | May 18, 15:47 UTC | May 19, 14:25 UTC | 22h 38m |
| 2026-05-17 | JBU1052 | MCO → BOS | May 17, 20:58 UTC | May 18, 19:15 UTC | 22h 17m |
| 2026-05-17 | JBU1678 | JAX → JFK | May 17, 11:04 UTC | May 18, 03:40 UTC | 16h 37m |
| 2026-05-16 | JBU121 | JFK → NAS | May 16, 14:01 UTC | May 17, 13:01 UTC | 23h 0m |
| 2026-05-16 | JBU1678 | JAX → JFK | May 16, 10:31 UTC | May 16, 12:31 UTC | 2h 0m |
| 2026-05-16 | JBU1678 | JAX → JFK | May 16, 10:30 UTC | May 17, 00:40 UTC | 14h 11m |
| 2026-05-15 | JBU2377 | JFK → JAX | May 15, 23:00 UTC | May 16, 00:55 UTC | 1h 55m |
| 2026-05-15 | JBU2102 | FLL → JFK | May 15, 18:15 UTC | May 15, 20:40 UTC | 2h 25m |
| 2026-05-15 | JBU1739 | SYR → FLL | May 15, 14:00 UTC | May 15, 16:30 UTC | 2h 29m |
| 2026-05-14 | JBU560 | PHL → BOS | May 14, 21:15 UTC | May 15, 19:15 UTC | 22h 0m |
| 2026-05-14 | JBU87 | ALB → FLL | May 14, 13:32 UTC | May 15, 13:00 UTC | 23h 29m |
| 2026-05-14 | JBU1146 | FLL → RIC | May 14, 00:22 UTC | May 14, 23:15 UTC | 22h 54m |
| 2026-05-13 | JBU2760 | SXM → FLL | May 13, 19:19 UTC | May 14, 19:15 UTC | 23h 57m |
| 2026-05-13 | JBU2761 | BOS → SJU | May 13, 15:38 UTC | May 14, 15:15 UTC | 23h 38m |
| 2026-05-13 | JBU959 | BDL → FLL | May 13, 11:06 UTC | May 14, 02:15 UTC | 15h 10m |
| 2026-05-13 | JBU534 | SFO → BOS | May 13, 00:20 UTC | May 13, 22:30 UTC | 22h 11m |
| 2026-05-12 | JBU1752 | MCO → BOS | May 12, 20:16 UTC | May 13, 17:50 UTC | 21h 35m |
| 2026-05-12 | JBU2475 | BDL → SJU | May 12, 14:35 UTC | May 12, 15:10 UTC | 35m |
| 2026-05-12 | JBU2475 | BDL → SJU | May 12, 14:32 UTC | May 13, 13:15 UTC | 22h 44m |
| 2026-05-12 | JBU1476 | SJU → BDL | May 12, 12:35 UTC | May 12, 13:15 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 N729JB page for operator, model, and routing details .