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 6h ago
Flights observed
113
Distinct callsigns
20
Country
US
Last broadcast
6h 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JBU1107 JFK → LHR May 29, 13:20 UTCMay 29, 19:55 UTC6h 35m
2026-05-29 JBU1107 JFK → LHR May 29, 13:18 UTCMay 29, 19:55 UTC6h 38m
2026-05-29 JBU1024 FLL → JFK May 29, 05:45 UTCMay 29, 10:40 UTC4h 55m
2026-05-28 JBU32 AMS → BOS May 28, 09:56 UTCMay 29, 09:30 UTC23h 34m
2026-05-28 JBU31 BOS → AMS May 28, 00:50 UTCMay 28, 23:30 UTC22h 40m
2026-05-27 JBU2260 MAD → BOS May 27, 13:25 UTCMay 28, 11:30 UTC22h 5m
2026-05-27 JBU2260 MAD → BOS May 27, 13:25 UTCMay 28, 11:30 UTC22h 5m
2026-05-26 JBU834 SFO → BOS May 26, 20:34 UTCMay 27, 01:29 UTC4h 55m
2026-05-26 JBU834 SFO → BOS May 26, 20:30 UTCMay 27, 19:30 UTC23h 0m
2026-05-26 JBU1333 BOS → SFO May 26, 12:35 UTCMay 26, 18:40 UTC6h 5m
2026-05-25 JBU734 SFO → BOS May 25, 20:34 UTCMay 26, 01:34 UTC5h 0m
2026-05-25 JBU1833 BOS → SFO May 25, 12:35 UTCMay 25, 18:30 UTC5h 55m
2026-05-24 JBU223 JFK → LAX May 24, 11:15 UTCMay 24, 16:50 UTC5h 35m
2026-05-24 JBU223 JFK → LAX May 24, 11:11 UTCMay 25, 05:55 UTC18h 44m
2026-05-23 JBU2220 LHR → JFK May 23, 07:50 UTCMay 23, 15:15 UTC7h 25m
2026-05-22 JBU1107 JFK → LHR May 22, 13:05 UTCMay 22, 19:15 UTC6h 10m
2026-05-22 JBU1107 JFK → LHR May 22, 13:02 UTCMay 23, 09:10 UTC20h 8m
2026-05-21 JBU20 LHR → JFK May 21, 11:15 UTCMay 21, 18:45 UTC7h 30m
2026-05-21 JBU7 JFK → LHR May 21, 02:15 UTCMay 21, 08:50 UTC6h 35m
2026-05-19 JBU8419 BOS → JFK May 19, 19:05 UTCMay 19, 19:45 UTC40m
2026-05-19 JBU1621 LHR → BOS May 19, 08:00 UTCMay 19, 14:55 UTC6h 55m
2026-05-18 JBU1620 BOS → LHR May 18, 23:55 UTCMay 19, 06:10 UTC6h 15m
2026-05-18 JBU32 AMS → BOS May 18, 09:40 UTCMay 18, 11:30 UTC1h 50m
2026-05-18 JBU32 AMS → BOS May 18, 09:36 UTCMay 19, 09:15 UTC23h 39m
2026-05-18 JBU31 BOS → AMS May 18, 00:30 UTCMay 18, 07:00 UTC6h 30m
2026-05-17 JBU32 AMS → BOS May 17, 09:25 UTCMay 18, 07:10 UTC21h 46m
2026-05-17 JBU31 BOS → AMS May 17, 00:26 UTCMay 17, 17:05 UTC16h 40m
2026-05-17 JBU31 BOS → AMS May 17, 00:30 UTCMay 17, 06:50 UTC6h 20m
2026-05-16 JBU1621 LHR → BOS May 16, 07:45 UTCMay 16, 14:46 UTC7h 0m
2026-05-15 JBU1620 BOS → LHR May 15, 23:00 UTCMay 16, 05:30 UTC6h 30m
2026-05-14 JBU31 BOS → AMS May 14, 01:08 UTCMay 14, 18:00 UTC16h 53m
2026-05-13 JBU1621 LHR → BOS May 13, 07:58 UTCMay 14, 07:30 UTC23h 33m
2026-05-12 JBU1620 BOS → LHR May 12, 23:00 UTCMay 13, 15:10 UTC16h 11m
2026-05-12 JBU332 LGA → BOS May 12, 08:15 UTCMay 12, 09:30 UTC1h 15m
2026-05-12 JBU332 LGA → BOS May 12, 08:16 UTCMay 13, 05:30 UTC21h 15m
2026-05-11 JBU331 BDL → MCO May 11, 22:00 UTCMay 12, 05:00 UTC7h 0m
2026-05-10 JBU1634 JFK → BTV May 10, 22:49 UTCMay 11, 03:50 UTC5h 0m
2026-05-10 JBU115 JFK → MSY May 10, 14:59 UTCMay 10, 20:45 UTC5h 45m
2026-05-09 JBU7 JFK → LHR May 9, 01:33 UTCMay 9, 18:40 UTC17h 7m
2026-05-08 JBU20 LHR → JFK May 8, 11:14 UTCMay 8, 12:30 UTC1h 15m
2026-05-08 JBU20 LHR → JFK May 8, 11:10 UTCMay 9, 08:35 UTC21h 25m
2026-05-08 JBU7 JFK → LHR May 8, 01:35 UTCMay 8, 08:14 UTC6h 40m
2026-05-07 JBU20 LHR → JFK May 7, 11:20 UTCMay 7, 12:35 UTC1h 15m
2026-05-07 JBU20 LHR → JFK May 7, 11:17 UTCMay 8, 08:14 UTC20h 58m
2026-05-07 JBU20 LHR → JFK May 7, 11:17 UTCMay 8, 08:14 UTC20h 58m
2026-05-07 JBU7 JFK → LHR May 7, 01:45 UTCMay 7, 08:25 UTC6h 40m
2026-05-06 JBU2220 LHR → JFK May 6, 07:30 UTCMay 6, 14:55 UTC7h 25m
2026-05-06 JBU2220 LHR → JFK May 6, 07:27 UTCMay 7, 03:10 UTC19h 43m
2026-05-05 JBU1107 JFK → LHR May 5, 13:10 UTCMay 5, 19:30 UTC6h 20m
2026-05-05 JBU1107 JFK → LHR May 5, 13:06 UTCMay 6, 08:45 UTC19h 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 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 6h 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 JBU31, JBU20, JBU323, JBU1107, JBU7.