Apparatus

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sensors Mode-S transponder

A1B2A8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2084J · AIRBUS A-321neo · operated by UMB BANK NA TRUSTEE

Hex
A1B2A8
Octal
50331250
Decimal
10,597,032
Country
US
Tail
N2084J
Type
A21N
No current signal · last broadcast Jul 26, 20:05 UTC
Flights observed
157
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:05 UTC

Last known position

Most recent position reported by Mode-S A1B2A8.

Country allocation

The ICAO 24-bit address A1B2A8 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
JBU1769 JetBlue Airways 6 2026-07-25
JBU505 JetBlue Airways 5 2026-07-19
JBU466 - 5 2026-07-12
JBU387 JetBlue Airways 4 2026-04-17
JBU1966 - 4 2026-07-11
JBU1533 - 4 2026-07-23
JBU1532 JetBlue Airways 4 2026-07-23
JBU1360 JetBlue Airways 4 2026-04-15
JBU1359 - 4 2026-04-15
JBU1328 JetBlue Airways 4 2026-04-20
JBU1188 - 4 2026-06-30
JBU8627 JetBlue Airways 3 2026-05-01
JBU787 - 3 2026-07-10
JBU561 JetBlue Airways 3 2026-04-22
JBU528 - 3 2026-07-15
JBU465 - 3 2026-07-12
JBU1965 - 3 2026-06-29
JBU1669 - 3 2026-07-05
JBU1584 JetBlue Airways 3 2026-05-01
JBU1483 JetBlue Airways 3 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU1104 RSW → BDL Jul 26, 04:10 UTCJul 26, 05:55 UTC1h 45m
2026-07-26 JBU1104 RSW → BDL Jul 26, 02:10 UTCJul 26, 02:25 UTC15m
2026-07-26 JBU1104 RSW → BDL Jul 26, 02:09 UTCJul 26, 20:05 UTC17h 57m
2026-07-26 JBU903 JFK → SJU Jul 26, 00:15 UTCJul 26, 00:35 UTC20m
2026-07-25 JBU903 JFK → SJU Jul 25, 21:20 UTCJul 25, 22:00 UTC40m
2026-07-25 JBU1769 JFK → GYE Jul 25, 03:35 UTCJul 25, 18:35 UTC15h 0m
2026-07-24 JBU662 BGI → JFK Jul 24, 19:05 UTCJul 24, 23:40 UTC4h 35m
2026-07-24 JBU361 JFK → BGI Jul 24, 12:55 UTCJul 24, 17:15 UTC4h 20m
2026-07-23 JBU1532 CTG → JFK Jul 23, 22:50 UTCJul 24, 01:20 UTC2h 30m
2026-07-23 JBU1532 CTG → JFK Jul 23, 21:05 UTCJul 23, 21:25 UTC20m
2026-07-23 JBU1532 CTG → JFK Jul 23, 21:02 UTCJul 24, 20:00 UTC22h 58m
2026-07-23 JBU1533 JFK → CTG Jul 23, 15:00 UTCJul 23, 19:45 UTC4h 45m
2026-07-22 JBU1682 UVF → JFK Jul 22, 18:15 UTCJul 22, 22:45 UTC4h 30m
2026-07-21 JBU1681 - Jul 21, 12:10 UTCJul 21, 15:15 UTC3h 5m
2026-07-20 JBU579 DCA → FLL Jul 20, 12:25 UTCJul 20, 14:25 UTC2h 0m
2026-07-20 JBU579 DCA → FLL Jul 20, 12:23 UTCJul 21, 12:00 UTC23h 37m
2026-07-20 JBU2080 - Jul 20, 01:40 UTCJul 20, 03:35 UTC1h 55m
2026-07-19 JBU505 EWR → FLL Jul 19, 10:50 UTCJul 19, 23:20 UTC12h 30m
2026-07-18 JBU1770 GYE → JFK Jul 18, 12:15 UTCJul 19, 12:00 UTC23h 46m
2026-07-18 JBU1769 JFK → GYE Jul 18, 03:45 UTCJul 18, 18:20 UTC14h 35m
2026-07-17 JBU1533 - Jul 17, 13:35 UTCJul 17, 16:04 UTC2h 30m
2026-07-17 JBU1533 JFK → CTG Jul 17, 13:35 UTCJul 18, 07:30 UTC17h 56m
2026-07-16 JBU1682 UVF → JFK Jul 16, 17:54 UTCJul 17, 16:00 UTC22h 6m
2026-07-15 JBU528 GYE → JFK Jul 15, 21:53 UTCJul 16, 18:05 UTC20h 12m
2026-07-15 JBU528 - Jul 15, 16:20 UTCJul 16, 04:00 UTC11h 40m
2026-07-14 JBU1611 - Jul 14, 16:15 UTCJul 14, 18:40 UTC2h 25m
2026-07-14 JBU1611 FLL → AUA Jul 14, 16:13 UTCJul 14, 22:50 UTC6h 37m
2026-07-14 JBU1505 EWR → FLL Jul 14, 10:15 UTCJul 14, 12:45 UTC2h 30m
2026-07-14 JBU706 - Jul 14, 02:25 UTCJul 14, 04:55 UTC2h 30m
2026-07-13 JBU505 JFK → FLL Jul 13, 10:50 UTCJul 13, 22:30 UTC11h 40m
2026-07-12 JBU466 GEO → JFK Jul 12, 22:23 UTCJul 13, 22:00 UTC23h 38m
2026-07-12 JBU465 - Jul 12, 15:45 UTCJul 13, 03:45 UTC12h 0m
2026-07-11 JBU1532 CTG → JFK Jul 11, 19:59 UTCJul 12, 16:20 UTC20h 22m
2026-07-11 JBU1966 GEO → JFK Jul 11, 05:50 UTCJul 12, 00:30 UTC18h 41m
2026-07-10 JBU1966 JFK → JFK Jul 10, 23:25 UTCJul 11, 11:10 UTC11h 45m
2026-07-10 JBU787 - Jul 10, 13:15 UTCJul 10, 13:30 UTC15m
2026-07-10 JBU787 JFK → SXM Jul 10, 10:27 UTCJul 11, 08:10 UTC21h 44m
2026-07-10 JBU787 - Jul 10, 10:30 UTCJul 10, 11:05 UTC35m
2026-07-09 JBU517 BOS → JFK Jul 9, 13:28 UTCJul 10, 11:05 UTC21h 37m
2026-07-09 JBU517 BOS → JFK Jul 9, 13:30 UTCJul 9, 14:55 UTC1h 25m
2026-07-09 JBU518 - Jul 9, 10:25 UTCJul 9, 11:50 UTC1h 25m
2026-07-08 JBU505 JFK → FLL Jul 8, 10:00 UTCJul 8, 21:45 UTC11h 45m
2026-07-07 JBU1858 AUA → JFK Jul 7, 17:39 UTCJul 8, 13:40 UTC20h 2m
2026-07-07 JBU1759 JFK → KIN Jul 7, 01:12 UTCJul 7, 22:10 UTC20h 59m
2026-07-07 JBU1759 - Jul 7, 01:15 UTCJul 7, 03:45 UTC2h 30m
2026-07-05 JBU1669 - Jul 5, 17:05 UTCJul 5, 17:50 UTC45m
2026-07-05 JBU1669 JFK → PUJ Jul 5, 17:00 UTCJul 6, 16:00 UTC23h 0m
2026-07-04 JBU610 JFK → JFK Jul 4, 21:50 UTCJul 5, 13:30 UTC15h 40m
2026-07-04 JBU1769 JFK → JFK Jul 4, 03:45 UTCJul 4, 18:35 UTC14h 50m
2026-07-03 JBU57 - Jul 3, 14:35 UTCJul 3, 17:50 UTC3h 15m

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 N2084J page for operator, model, and routing details .

Mode-S A1B2A8 frequently asked

What is Mode-S code A1B2A8?
A1B2A8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2084J.
Where is Mode-S A1B2A8 registered?
Mode-S code A1B2A8 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 A1B2A8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1B2A8, octal 50331250, decimal 10,597,032.
What flights does A1B2A8 operate?
Mode-S A1B2A8 has broadcast 20 distinct callsigns, including JBU1769, JBU505, JBU466, JBU387, JBU1966.