Apparatus

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sensors Mode-S transponder

A4B6B6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4022J · AIRBUS A-321neo · operated by JETBLUE AIRWAYS CORP

Hex
A4B6B6
Octal
51133266
Decimal
10,794,678
Country
US
Tail
N4022J
Type
A21N
No current signal · last broadcast 14h ago
Flights observed
213
Distinct callsigns
20
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S A4B6B6.

Country allocation

The ICAO 24-bit address A4B6B6 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
JBU1107 JetBlue Airways 14 2026-07-07
JBU2261 - 12 2026-07-10
JBU20 - 12 2026-07-13
JBU1408 - 12 2026-07-12
JBU7 - 11 2026-07-13
JBU332 - 11 2026-07-01
JBU331 JetBlue Airways 11 2026-06-30
JBU32 - 11 2026-06-22
JBU31 - 11 2026-06-22
JBU2260 - 11 2026-06-19
JBU2220 - 11 2026-07-08
JBU33 - 9 2026-07-12
JBU1620 - 8 2026-07-10
JBU1407 - 8 2026-07-09
JBU323 JetBlue Airways 7 2026-04-16
JBU34 - 5 2026-07-09
JBU2124 JetBlue Airways 5 2026-04-17
JBU524 JetBlue Airways 4 2026-04-15
JBU1515 JetBlue Airways 4 2026-04-17
JBU1216 JetBlue Airways 4 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 JBU20 - Jul 13, 11:35 UTCJul 13, 18:35 UTC7h 0m
2026-07-13 JBU7 JFK → LHR Jul 13, 01:15 UTCJul 13, 08:01 UTC6h 45m
2026-07-12 JBU1408 CDG → JFK Jul 12, 10:53 UTCJul 13, 08:01 UTC21h 8m
2026-07-12 JBU33 BOS → CDG Jul 12, 01:35 UTCJul 13, 01:30 UTC23h 56m
2026-07-12 JBU33 - Jul 12, 01:35 UTCJul 12, 02:55 UTC1h 20m
2026-07-10 JBU1620 BOS → LHR Jul 10, 23:13 UTCJul 11, 15:00 UTC15h 48m
2026-07-10 JBU1620 - Jul 10, 23:15 UTCJul 11, 05:31 UTC6h 15m
2026-07-10 JBU2261 BOS → MAD Jul 10, 02:54 UTCJul 11, 00:20 UTC21h 27m
2026-07-10 JBU2261 BOS → MAD Jul 10, 02:55 UTCJul 10, 09:55 UTC7h 0m
2026-07-09 JBU34 - Jul 9, 09:25 UTCJul 9, 10:55 UTC1h 30m
2026-07-09 JBU34 CDG → BOS Jul 9, 09:20 UTCJul 10, 04:20 UTC19h 0m
2026-07-09 JBU1407 - Jul 9, 00:20 UTCJul 9, 07:25 UTC7h 5m
2026-07-08 JBU2220 - Jul 8, 07:25 UTCJul 8, 14:35 UTC7h 10m
2026-07-07 JBU1107 JFK → LHR Jul 7, 13:07 UTCJul 8, 08:45 UTC19h 39m
2026-07-07 JBU1107 JFK → LHR Jul 7, 13:10 UTCJul 7, 19:35 UTC6h 25m
2026-07-06 JBU20 LHR → JFK Jul 6, 11:40 UTCJul 6, 19:15 UTC7h 35m
2026-07-06 JBU7 JFK → LHR Jul 6, 02:15 UTCJul 6, 08:35 UTC6h 20m
2026-07-05 JBU2220 LHR → JFK Jul 5, 07:35 UTCJul 5, 15:10 UTC7h 35m
2026-07-04 JBU1107 JFK → LHR Jul 4, 13:42 UTCJul 5, 09:00 UTC19h 19m
2026-07-04 JBU1107 JFK → LHR Jul 4, 13:45 UTCJul 4, 19:30 UTC5h 45m
2026-07-03 JBU20 LHR → JFK Jul 3, 11:21 UTCJul 3, 19:05 UTC7h 45m
2026-07-03 JBU7 JFK → LHR Jul 3, 01:41 UTCJul 3, 19:05 UTC17h 25m
2026-07-02 JBU1408 MIA → EWR Jul 2, 11:07 UTCJul 3, 08:25 UTC21h 19m
2026-07-02 JBU1408 MIA → EWR Jul 2, 11:07 UTCJul 3, 08:25 UTC21h 19m
2026-07-02 JBU33 BOS → CDG Jul 2, 02:34 UTCJul 3, 01:30 UTC22h 56m
2026-07-02 JBU33 - Jul 2, 02:35 UTCJul 2, 08:50 UTC6h 15m
2026-07-01 JBU332 MXP → BOS Jul 1, 09:10 UTCJul 1, 17:45 UTC8h 35m
2026-06-30 JBU331 BDL → MCO Jun 30, 22:51 UTCJul 1, 18:05 UTC19h 15m
2026-06-30 JBU332 - Jun 30, 08:25 UTCJun 30, 09:30 UTC1h 5m
2026-06-30 JBU332 MXP → BOS Jun 30, 08:25 UTCJul 1, 06:10 UTC21h 45m
2026-06-30 JBU332 MXP → BOS Jun 30, 08:25 UTCJul 1, 06:10 UTC21h 45m
2026-06-29 JBU331 BDL → MCO Jun 29, 22:55 UTCJun 30, 05:40 UTC6h 46m
2026-06-28 JBU34 CDG → BOS Jun 28, 09:36 UTCJun 28, 17:25 UTC7h 49m
2026-06-28 JBU1407 JFK → CDG Jun 28, 00:09 UTCJun 28, 05:29 UTC5h 20m
2026-06-28 JBU1407 JFK → CDG Jun 28, 00:05 UTCJun 28, 17:25 UTC17h 20m
2026-06-27 JBU2220 LHR → JFK Jun 27, 07:39 UTCJun 27, 14:54 UTC7h 15m
2026-06-26 JBU1107 JFK → LHR Jun 26, 13:04 UTCJun 26, 14:44 UTC1h 40m
2026-06-26 JBU1107 JFK → LHR Jun 26, 13:04 UTCJun 27, 08:55 UTC19h 51m
2026-06-25 JBU20 LHR → JFK Jun 25, 11:09 UTCJun 25, 18:50 UTC7h 41m
2026-06-25 JBU7 JFK → LHR Jun 25, 02:02 UTCJun 25, 18:50 UTC16h 48m
2026-06-24 JBU1408 MIA → EWR Jun 24, 11:24 UTCJun 24, 19:29 UTC8h 5m
2026-06-24 JBU1408 MIA → EWR Jun 24, 11:21 UTCJun 25, 08:30 UTC21h 9m
2026-06-24 JBU33 BOS → CDG Jun 24, 02:24 UTCJun 24, 08:45 UTC6h 20m
2026-06-22 JBU1620 BOS → LHR Jun 22, 22:58 UTCJun 23, 15:24 UTC16h 27m
2026-06-22 JBU32 AMS → BOS Jun 22, 09:44 UTCJun 23, 09:14 UTC23h 31m
2026-06-22 JBU31 BOS → AMS Jun 22, 01:15 UTCJun 22, 23:29 UTC22h 15m
2026-06-22 JBU31 - Jun 22, 01:15 UTCJun 22, 02:40 UTC1h 25m
2026-06-20 JBU331 BDL → MCO Jun 20, 22:37 UTCJun 21, 16:19 UTC17h 43m
2026-06-20 JBU331 BDL → MCO Jun 20, 22:39 UTCJun 20, 23:29 UTC50m
2026-06-20 JBU32 AMS → BOS Jun 20, 09:44 UTCJun 20, 17:10 UTC7h 25m

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 N4022J page for operator, model, and routing details .

Mode-S A4B6B6 frequently asked

What is Mode-S code A4B6B6?
A4B6B6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4022J.
Where is Mode-S A4B6B6 registered?
Mode-S code A4B6B6 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 A4B6B6 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 A4B6B6, octal 51133266, decimal 10,794,678.
What flights does A4B6B6 operate?
Mode-S A4B6B6 has broadcast 20 distinct callsigns, including JBU1107, JBU2261, JBU20, JBU1408, JBU7.