Apparatus

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sensors Mode-S transponder

A4C96C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4073J · AIRBUS A-321neo · operated by JETBLUE AIRWAYS CORP

Hex
A4C96C
Octal
51144554
Decimal
10,799,468
Country
US
Tail
N4073J
Type
A21N
No current signal · last broadcast 1h ago
Flights observed
216
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A4C96C.

Country allocation

The ICAO 24-bit address A4C96C 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
JBU2261 - 17 2026-07-07
JBU20 JetBlue Airways 16 2026-06-22
JBU7 - 14 2026-07-10
JBU33 - 14 2026-07-09
JBU2220 - 13 2026-07-12
JBU34 - 12 2026-07-13
JBU1620 - 12 2026-07-08
JBU1407 - 12 2026-07-13
JBU1107 - 12 2026-07-11
JBU345 - 11 2026-06-17
JBU2260 - 11 2026-07-07
JBU346 - 10 2026-06-17
JBU1408 JetBlue Airways 10 2026-06-20
JBU31 - 9 2026-06-19
JBU1621 - 7 2026-07-08
JBU332 - 6 2026-07-06
JBU331 JetBlue Airways 6 2026-07-05
JBU32 JetBlue Airways 5 2026-05-07
JBU524 JetBlue Airways 4 2026-05-02
JBU523 JetBlue Airways 3 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 JBU34 - Jul 13, 11:15 UTCJul 13, 18:20 UTC7h 5m
2026-07-13 JBU34 CDG → BOS Jul 13, 11:13 UTCJul 14, 04:05 UTC16h 53m
2026-07-13 JBU1407 JFK → CDG Jul 13, 01:10 UTCJul 13, 08:10 UTC7h 0m
2026-07-12 JBU2220 LHR → JFK Jul 12, 07:26 UTCJul 13, 07:01 UTC23h 35m
2026-07-12 JBU2220 LHR → JFK Jul 12, 07:31 UTCJul 12, 14:35 UTC7h 5m
2026-07-11 JBU1107 JFK → LHR Jul 11, 13:34 UTCJul 12, 13:01 UTC23h 27m
2026-07-11 JBU1107 - Jul 11, 13:35 UTCJul 11, 15:00 UTC1h 25m
2026-07-10 JBU7 - Jul 10, 01:45 UTCJul 10, 03:00 UTC1h 15m
2026-07-10 JBU7 JFK → LHR Jul 10, 01:45 UTCJul 10, 19:15 UTC17h 30m
2026-07-09 JBU33 BOS → CDG Jul 9, 02:06 UTCJul 9, 19:00 UTC16h 55m
2026-07-08 JBU1621 LHR → BOS Jul 8, 08:18 UTCJul 9, 03:35 UTC19h 18m
2026-07-08 JBU1620 BOS → LHR Jul 8, 00:11 UTCJul 8, 15:15 UTC15h 4m
2026-07-07 JBU2260 - Jul 7, 12:45 UTCJul 7, 13:00 UTC15m
2026-07-07 JBU2260 MAD → BOS Jul 7, 12:45 UTCJul 8, 09:35 UTC20h 51m
2026-07-07 JBU2261 - Jul 7, 02:45 UTCJul 7, 09:20 UTC6h 35m
2026-07-06 JBU332 MXP → BOS Jul 6, 08:23 UTCJul 7, 03:50 UTC19h 27m
2026-07-05 JBU331 BDL → MCO Jul 5, 22:40 UTCJul 6, 16:45 UTC18h 5m
2026-07-05 JBU73 JFK → EDI Jul 5, 03:09 UTCJul 6, 00:05 UTC20h 57m
2026-07-04 JBU8533 BOS → JFK Jul 4, 22:40 UTCJul 4, 23:15 UTC35m
2026-07-04 JBU8533 BOS → JFK Jul 4, 22:36 UTCJul 5, 18:50 UTC20h 15m
2026-07-03 JBU1621 - Jul 3, 07:55 UTCJul 3, 09:20 UTC1h 25m
2026-07-03 JBU1621 LHR → BOS Jul 3, 07:53 UTCJul 4, 06:35 UTC22h 43m
2026-07-02 JBU1620 - Jul 2, 23:05 UTCJul 3, 05:10 UTC6h 5m
2026-07-02 JBU332 MXP → BOS Jul 2, 10:20 UTCJul 2, 18:30 UTC8h 10m
2026-07-01 JBU331 BDL → MCO Jul 1, 23:35 UTCJul 2, 06:41 UTC7h 6m
2026-07-01 JBU1621 - Jul 1, 07:55 UTCJul 1, 15:05 UTC7h 10m
2026-06-30 JBU1620 BOS → LHR Jun 30, 23:10 UTCJul 1, 05:20 UTC6h 10m
2026-06-30 JBU34 - Jun 30, 09:40 UTCJun 30, 17:25 UTC7h 45m
2026-06-30 JBU1407 JFK → CDG Jun 30, 00:45 UTCJun 30, 07:10 UTC6h 26m
2026-06-29 JBU2220 LHR → JFK Jun 29, 07:30 UTCJun 29, 14:50 UTC7h 20m
2026-06-28 JBU1107 JFK → LHR Jun 28, 13:04 UTCJun 28, 19:20 UTC6h 15m
2026-06-27 JBU7 JFK → LHR Jun 27, 01:15 UTCJun 27, 07:34 UTC6h 20m
2026-06-27 JBU7 JFK → LHR Jun 27, 01:10 UTCJun 27, 18:29 UTC17h 20m
2026-06-26 JBU33 BOS → CDG Jun 26, 01:38 UTCJun 27, 01:00 UTC23h 22m
2026-06-26 JBU33 - Jun 26, 01:39 UTCJun 26, 03:00 UTC1h 20m
2026-06-25 JBU1079 BOS → EDI Jun 25, 02:49 UTCJun 25, 08:30 UTC5h 40m
2026-06-25 JBU1079 BOS → EDI Jun 25, 02:46 UTCJun 26, 00:59 UTC22h 14m
2026-06-24 JBU2261 - Jun 24, 03:10 UTCJun 24, 09:29 UTC6h 20m
2026-06-24 JBU2261 BOS → MAD Jun 24, 03:05 UTCJun 25, 02:59 UTC23h 55m
2026-06-24 JBU2261 BOS → BOS Jun 24, 02:34 UTCJun 24, 02:49 UTC15m
2026-06-23 JBU1407 JFK → CDG Jun 23, 00:00 UTCJun 23, 17:34 UTC17h 35m
2026-06-22 JBU20 LHR → JFK Jun 22, 11:30 UTCJun 22, 12:34 UTC1h 5m
2026-06-22 JBU20 LHR → JFK Jun 22, 11:25 UTCJun 23, 10:59 UTC23h 35m
2026-06-22 JBU20 LHR → JFK Jun 22, 11:25 UTCJun 23, 10:59 UTC23h 35m
2026-06-22 JBU7 - Jun 22, 01:44 UTCJun 22, 08:15 UTC6h 30m
2026-06-21 JBU7 JFK → LHR Jun 21, 01:45 UTCJun 21, 16:59 UTC15h 15m
2026-06-20 JBU1408 MIA → EWR Jun 20, 10:37 UTCJun 21, 08:15 UTC21h 38m
2026-06-20 JBU33 BOS → CDG Jun 20, 01:50 UTCJun 20, 18:29 UTC16h 40m
2026-06-20 JBU33 BOS → CDG Jun 20, 01:55 UTCJun 20, 08:14 UTC6h 20m
2026-06-19 JBU31 - Jun 19, 00:34 UTCJun 19, 07:04 UTC6h 30m

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 N4073J page for operator, model, and routing details .

Mode-S A4C96C frequently asked

What is Mode-S code A4C96C?
A4C96C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4073J.
Where is Mode-S A4C96C registered?
Mode-S code A4C96C 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 A4C96C broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4C96C, octal 51144554, decimal 10,799,468.
What flights does A4C96C operate?
Mode-S A4C96C has broadcast 20 distinct callsigns, including JBU2261, JBU20, JBU7, JBU33, JBU2220.