sensors Mode-S transponder

A39243

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3291J · AIRBUS A220-300 · operated by JETBLUE AIRWAYS

Hex
A39243
Octal
50711103
Decimal
10,719,811
Country
US
Tail
N3291J
Type
BCS3
No current signal · last broadcast 14h ago
Flights observed
153
Distinct callsigns
20
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S A39243.

Country allocation

The ICAO 24-bit address A39243 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
JBU206 JetBlue Airways 4 2026-05-16
JBU68 JetBlue Airways 3 2026-05-22
JBU369 JetBlue Airways 3 2026-04-14
JBU366 - 3 2026-04-14
JBU1923 JetBlue Airways 3 2026-04-29
JBU1499 JetBlue Airways 3 2026-05-20
JBU896 JetBlue Airways 2 2026-04-16
JBU892 JetBlue Airways 2 2026-05-28
JBU797 JetBlue Airways 2 2026-04-16
JBU720 JetBlue Airways 2 2026-05-19
JBU547 JetBlue Airways 2 2026-04-24
JBU450 JetBlue Airways 2 2026-04-17
JBU376 JetBlue Airways 2 2026-05-11
JBU2786 JetBlue Airways 2 2026-05-24
JBU2602 - 2 2026-04-13
JBU2601 - 2 2026-04-13
JBU249 JetBlue Airways 2 2026-04-17
JBU2368 JetBlue Airways 2 2026-04-15
JBU2186 JetBlue Airways 2 2026-04-26
JBU2119 JetBlue Airways 2 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 JBU516 RSW → BOS May 28, 22:39 UTCMay 29, 19:45 UTC21h 7m
2026-05-28 JBU892 TPA → BOS May 28, 14:40 UTCMay 28, 17:15 UTC2h 35m
2026-05-28 JBU892 TPA → BOS May 28, 14:38 UTCMay 29, 00:00 UTC9h 22m
2026-05-28 JBU891 BOS → TPA May 28, 10:40 UTCMay 28, 13:30 UTC2h 50m
2026-05-27 JBU396 PUJ → BOS May 27, 21:40 UTCMay 28, 02:45 UTC5h 5m
2026-05-27 JBU95 BOS → PUJ May 27, 14:20 UTCMay 27, 19:55 UTC5h 35m
2026-05-27 JBU716 BUF → BOS May 27, 11:50 UTCMay 27, 12:50 UTC1h 0m
2026-05-26 JBU1515 JFK → SFO May 26, 09:57 UTCMay 27, 00:44 UTC14h 48m
2026-05-26 JBU1516 JFK → SYR May 26, 03:20 UTCMay 27, 00:44 UTC21h 25m
2026-05-25 JBU2032 BDA → JFK May 25, 18:50 UTCMay 26, 17:39 UTC22h 50m
2026-05-25 JBU130 RSW → JFK May 25, 11:01 UTCMay 26, 10:44 UTC23h 44m
2026-05-24 JBU2786 RDU → JFK May 24, 17:45 UTCMay 24, 18:45 UTC1h 0m
2026-05-24 JBU2786 RDU → JFK May 24, 17:40 UTCMay 25, 16:45 UTC23h 5m
2026-05-24 JBU2285 JFK → RDU May 24, 14:55 UTCMay 24, 16:10 UTC1h 15m
2026-05-24 JBU1678 JAX → JFK May 24, 11:20 UTCMay 24, 13:10 UTC1h 50m
2026-05-24 JBU1677 JFK → JAX May 24, 01:20 UTCMay 24, 03:20 UTC2h 0m
2026-05-23 JBU765 JFK → GCM May 23, 14:20 UTCMay 23, 22:50 UTC8h 30m
2026-05-23 JBU2768 TPA → BQN May 23, 04:21 UTCMay 24, 02:45 UTC22h 25m
2026-05-22 JBU68 CHS → BOS May 22, 16:30 UTCMay 22, 18:15 UTC1h 45m
2026-05-22 JBU68 CHS → BOS May 22, 16:27 UTCMay 23, 14:45 UTC22h 18m
2026-05-22 JBU267 BOS → CHS May 22, 12:55 UTCMay 22, 15:00 UTC2h 5m
2026-05-21 JBU68 CHS → BOS May 21, 16:08 UTCMay 22, 14:45 UTC22h 38m
2026-05-20 JBU1499 BOS → DAB May 20, 17:15 UTCMay 20, 19:40 UTC2h 25m
2026-05-20 JBU1499 BOS → DAB May 20, 17:12 UTCMay 21, 16:45 UTC23h 34m
2026-05-20 JBU918 JFK → BOS May 20, 01:20 UTCMay 20, 02:05 UTC45m
2026-05-19 JBU156 PLS → JFK May 19, 20:15 UTCMay 19, 21:35 UTC1h 20m
2026-05-19 JBU255 JFK → PLS May 19, 13:55 UTCMay 19, 15:45 UTC1h 50m
2026-05-19 JBU720 ATL → JFK May 19, 10:20 UTCMay 19, 11:40 UTC1h 20m
2026-05-18 JBU1906 TPA → FLL May 18, 11:03 UTCMay 19, 10:45 UTC23h 42m
2026-05-18 JBU1905 FLL → TPA May 18, 01:18 UTCMay 19, 00:45 UTC23h 27m
2026-05-17 JBU1158 LIR → FLL May 17, 19:03 UTCMay 18, 18:45 UTC23h 42m
2026-05-17 JBU1157 FLL → LIR May 17, 15:24 UTCMay 18, 14:45 UTC23h 22m
2026-05-17 JBU1822 BOS → PBI May 17, 12:20 UTCMay 17, 13:45 UTC1h 25m
2026-05-17 JBU1822 BOS → PBI May 17, 12:20 UTCMay 18, 02:05 UTC13h 46m
2026-05-16 JBU207 BOS → BNA May 16, 09:55 UTCMay 16, 22:20 UTC12h 25m
2026-05-16 JBU206 BNA → BOS May 16, 02:15 UTCMay 16, 03:10 UTC55m
2026-05-16 JBU206 BNA → BOS May 16, 02:14 UTCMay 16, 22:20 UTC20h 6m
2026-05-15 JBU1782 VPS → BOS May 15, 22:20 UTCMay 16, 00:55 UTC2h 35m
2026-05-15 JBU1781 BOS → MCO May 15, 16:50 UTCMay 15, 19:20 UTC2h 30m
2026-05-15 JBU318 JFK → BOS May 15, 14:45 UTCMay 15, 15:20 UTC34m
2026-05-15 JBU720 ATL → JFK May 15, 10:30 UTCMay 15, 11:50 UTC1h 20m
2026-05-15 JBU2737 JFK → LAX May 15, 02:10 UTCMay 15, 03:40 UTC1h 30m
2026-05-14 JBU1500 DAB → BOS May 14, 22:25 UTCMay 15, 00:45 UTC2h 20m
2026-05-14 JBU1499 BOS → DAB May 14, 18:15 UTCMay 14, 20:50 UTC2h 35m
2026-05-13 JBU374 BNA → JFK May 13, 12:05 UTCMay 14, 10:20 UTC22h 16m
2026-05-12 JBU1500 DAB → BOS May 12, 21:51 UTCMay 13, 20:45 UTC22h 55m
2026-05-12 JBU1286 PIT → BOS May 12, 14:06 UTCMay 13, 12:45 UTC22h 40m
2026-05-11 JBU1880 FLL → DCA May 11, 20:34 UTCMay 12, 18:45 UTC22h 12m
2026-05-11 JBU1593 FLL → NAS May 11, 15:26 UTCMay 12, 14:45 UTC23h 20m
2026-05-11 JBU376 SJU → BDL May 11, 00:28 UTCMay 11, 22:35 UTC22h 7m

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 N3291J page for operator, model, and routing details .

Mode-S A39243 frequently asked

What is Mode-S code A39243?
A39243 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3291J.
Where is Mode-S A39243 registered?
Mode-S code A39243 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A39243 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A39243, octal 50711103, decimal 10,719,811.
What flights does A39243 operate?
Mode-S A39243 has broadcast 20 distinct callsigns, including JBU206, JBU68, JBU369, JBU366, JBU1923.