Apparatus

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sensors Mode-S transponder

AD4BCB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N956JT · AIRBUS A-321 · operated by JETBLUE AIRWAYS CORP

Hex
AD4BCB
Octal
53245713
Decimal
11,357,131
Country
US
Tail
N956JT
Type
A321
No current signal · last broadcast 6h ago
Flights observed
238
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S AD4BCB.

Country allocation

The ICAO 24-bit address AD4BCB 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
JBU2173 JetBlue Airways 7 2026-06-07
JBU651 JetBlue Airways 6 2026-05-14
JBU574 JetBlue Airways 5 2026-06-07
JBU1457 - 5 2026-07-09
JBU1348 JetBlue Airways 5 2026-05-28
JBU1347 - 5 2026-07-12
JBU1073 JetBlue Airways 5 2026-06-06
JBU91 JetBlue Airways 4 2026-04-22
JBU592 JetBlue Airways 4 2026-04-22
JBU2829 JetBlue Airways 4 2026-06-04
JBU22 JetBlue Airways 4 2026-06-08
JBU1652 JetBlue Airways 4 2026-04-24
JBU1604 - 4 2026-07-12
JBU1603 - 4 2026-07-11
JBU862 JetBlue Airways 3 2026-04-25
JBU774 JetBlue Airways 3 2026-06-06
JBU772 JetBlue Airways 3 2026-06-02
JBU771 JetBlue Airways 3 2026-06-04
JBU702 JetBlue Airways 3 2026-06-11
JBU58 JetBlue Airways 3 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 JBU1668 JFK → JFK Jul 13, 15:55 UTCJul 14, 00:20 UTC8h 25m
2026-07-13 JBU162 - Jul 13, 07:45 UTCJul 13, 12:55 UTC5h 10m
2026-07-12 JBU1604 SJU → JFK Jul 12, 18:23 UTCJul 13, 16:40 UTC22h 18m
2026-07-12 JBU1347 DCA → SJU Jul 12, 12:39 UTCJul 13, 10:45 UTC22h 7m
2026-07-11 JBU1603 JFK → SJU Jul 11, 21:20 UTCJul 12, 18:45 UTC21h 26m
2026-07-11 JBU1603 JFK → SJU Jul 11, 21:20 UTCJul 12, 18:45 UTC21h 26m
2026-07-11 JBU1603 - Jul 11, 21:20 UTCJul 11, 22:40 UTC1h 20m
2026-07-11 JBU454 ONT → JFK Jul 11, 07:30 UTCJul 11, 12:05 UTC4h 35m
2026-07-11 JBU355 JFK → ONT Jul 11, 00:35 UTCJul 11, 05:55 UTC5h 20m
2026-07-10 JBU152 CUN → JFK Jul 10, 19:00 UTCJul 10, 22:15 UTC3h 16m
2026-07-09 JBU158 AUA → JFK Jul 9, 23:02 UTCJul 10, 22:20 UTC23h 19m
2026-07-09 JBU1457 JFK → AUA Jul 9, 17:11 UTCJul 10, 16:30 UTC23h 20m
2026-07-09 JBU1457 - Jul 9, 17:15 UTCJul 9, 20:35 UTC3h 20m
2026-07-08 JBU637 - Jul 8, 23:55 UTCJul 9, 12:55 UTC13h 0m
2026-07-08 JBU169 JFK → PUJ Jul 8, 11:56 UTCJul 9, 01:50 UTC13h 55m
2026-07-07 JBU1604 - Jul 7, 20:05 UTCJul 7, 20:45 UTC40m
2026-07-07 JBU1604 - Jul 7, 17:25 UTCJul 7, 17:40 UTC15m
2026-07-07 JBU1604 SJU → JFK Jul 7, 17:21 UTCJul 8, 13:15 UTC19h 54m
2026-07-05 JBU1603 JFK → SJU Jul 5, 13:25 UTCJul 5, 16:45 UTC3h 20m
2026-07-04 JBU536 STI → JFK Jul 4, 09:39 UTCJul 5, 02:20 UTC16h 41m
2026-07-04 JBU937 JFK → STI Jul 4, 02:31 UTCJul 4, 18:10 UTC15h 40m
2026-07-04 JBU937 - Jul 4, 02:35 UTCJul 4, 03:15 UTC40m
2026-07-03 JBU8368 - Jul 3, 22:20 UTCJul 3, 23:00 UTC40m
2026-07-03 JBU8368 - Jul 3, 18:50 UTCJul 3, 22:15 UTC3h 25m
2026-06-18 JBU757 JFK → AUA Jun 18, 15:20 UTCJun 18, 16:15 UTC55m
2026-06-18 JBU757 JFK → AUA Jun 18, 12:15 UTCJun 18, 12:50 UTC35m
2026-06-17 JBU662 BGI → JFK Jun 17, 18:22 UTCJun 18, 16:15 UTC21h 54m
2026-06-17 JBU361 JFK → BGI Jun 17, 12:20 UTCJun 17, 15:40 UTC3h 20m
2026-06-17 JBU361 JFK → BGI Jun 17, 12:19 UTCJun 17, 23:00 UTC10h 42m
2026-06-16 JBU361 JFK → BGI Jun 16, 12:20 UTCJun 16, 22:50 UTC10h 31m
2026-06-15 JBU1457 - Jun 15, 20:00 UTCJun 15, 20:10 UTC10m
2026-06-15 JBU1457 - Jun 15, 15:50 UTCJun 15, 19:30 UTC3h 40m
2026-06-15 JBU1457 JFK → AUA Jun 15, 15:50 UTCJun 16, 12:50 UTC21h 0m
2026-06-14 JBU1858 AUA → JFK Jun 14, 17:56 UTCJun 15, 16:45 UTC22h 49m
2026-06-14 JBU98 DEN → JFK Jun 14, 06:30 UTCJun 14, 06:45 UTC15m
2026-06-14 JBU97 JFK → DEN Jun 14, 01:10 UTCJun 14, 05:05 UTC3h 56m
2026-06-14 JBU97 JFK → DEN Jun 14, 01:05 UTCJun 15, 00:45 UTC23h 40m
2026-06-13 JBU710 JAX → BOS Jun 13, 11:50 UTCJun 13, 20:00 UTC8h 10m
2026-06-13 JBU58 MCO → JFK Jun 13, 00:05 UTCJun 13, 01:05 UTC1h 0m
2026-06-12 JBU58 MCO → JFK Jun 12, 20:40 UTCJun 12, 20:55 UTC15m
2026-06-12 JBU58 MCO → JFK Jun 12, 20:38 UTCJun 13, 12:15 UTC15h 37m
2026-06-11 JBU57 JFK → AUA Jun 11, 14:45 UTCJun 11, 18:50 UTC4h 5m
2026-06-11 JBU702 SJU → TPA Jun 11, 01:05 UTCJun 11, 02:05 UTC1h 0m
2026-06-10 JBU702 SJU → TPA Jun 10, 23:20 UTCJun 10, 23:35 UTC15m
2026-06-10 JBU702 SJU → TPA Jun 10, 23:17 UTCJun 11, 18:50 UTC19h 33m
2026-06-10 JBU803 JFK → SJU Jun 10, 20:50 UTCJun 10, 21:10 UTC20m
2026-06-10 JBU303 IAD → LGB Jun 10, 01:48 UTCJun 10, 23:35 UTC21h 47m
2026-06-09 JBU504 SFO → BOS Jun 9, 09:39 UTCJun 10, 05:00 UTC19h 21m
2026-06-08 JBU22 MBJ → MCO Jun 8, 16:55 UTCJun 8, 19:40 UTC2h 45m
2026-06-08 JBU22 MBJ → MCO Jun 8, 16:50 UTCJun 9, 16:45 UTC23h 55m

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 N956JT page for operator, model, and routing details .

Mode-S AD4BCB frequently asked

What is Mode-S code AD4BCB?
AD4BCB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N956JT.
Where is Mode-S AD4BCB registered?
Mode-S code AD4BCB 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 AD4BCB broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD4BCB, octal 53245713, decimal 11,357,131.
What flights does AD4BCB operate?
Mode-S AD4BCB has broadcast 20 distinct callsigns, including JBU2173, JBU651, JBU574, JBU1457, JBU1348.