sensors Mode-S transponder

A1A435

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2047J · AIRBUS A-321neo · operated by UMB BANK NA TRUSTEE

Hex
A1A435
Octal
50322065
Decimal
10,593,333
Country
US
Tail
N2047J
Type
A21N
No current signal · last broadcast 8h ago
Flights observed
87
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A1A435.

Country allocation

The ICAO 24-bit address A1A435 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
JBU882 JetBlue Airways 9 2026-04-21
JBU881 - 6 2026-04-21
JBU836 JetBlue Airways 6 2026-05-13
JBU1794 - 6 2026-04-14
JBU2709 JetBlue Airways 5 2026-05-22
JBU1818 JetBlue Airways 5 2026-05-04
JBU509 JetBlue Airways 4 2026-05-19
JBU939 JetBlue Airways 3 2026-05-08
JBU610 JetBlue Airways 3 2026-05-06
JBU2210 JetBlue Airways 3 2026-05-19
JBU965 JetBlue Airways 2 2026-05-14
JBU662 JetBlue Airways 2 2026-05-26
JBU264 JetBlue Airways 2 2026-05-19
JBU1929 JetBlue Airways 2 2026-05-24
JBU1817 JetBlue Airways 2 2026-05-01
JBU1793 JetBlue Airways 2 2026-04-13
JBU1587 JetBlue Airways 2 2026-04-17
JBU1360 JetBlue Airways 2 2026-04-23
JBU1188 JetBlue Airways 2 2026-04-17
JBU1112 JetBlue Airways 2 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JBU1930 SDQ → BOS May 29, 12:25 UTCMay 29, 21:35 UTC9h 10m
2026-05-27 JBU1532 CTG → JFK May 27, 13:35 UTCMay 28, 00:45 UTC11h 10m
2026-05-26 JBU662 BGI → JFK May 26, 18:32 UTCMay 27, 16:10 UTC21h 39m
2026-05-26 JBU662 BGI → JFK May 26, 12:24 UTCMay 26, 23:14 UTC10h 50m
2026-05-25 JBU1533 JFK → CTG May 25, 13:55 UTCMay 26, 00:24 UTC10h 29m
2026-05-25 JBU71 JFK → SLC May 25, 02:17 UTCMay 26, 00:24 UTC22h 8m
2026-05-24 JBU2510 SDQ → JFK May 24, 20:29 UTCMay 25, 16:25 UTC19h 56m
2026-05-24 JBU1929 BOS → SDQ May 24, 14:30 UTCMay 25, 12:10 UTC21h 41m
2026-05-24 JBU1929 BOS → SDQ May 24, 14:30 UTCMay 24, 16:15 UTC1h 45m
2026-05-23 JBU1596 PUJ → BOS May 23, 17:20 UTCMay 24, 02:40 UTC9h 21m
2026-05-22 JBU2709 BOS → JAX May 22, 12:30 UTCMay 22, 21:20 UTC8h 50m
2026-05-19 JBU2210 JAX → BOS May 19, 20:05 UTCMay 19, 23:55 UTC3h 50m
2026-05-19 JBU509 BOS → SEA May 19, 14:36 UTCMay 19, 23:55 UTC9h 19m
2026-05-19 JBU264 SEA → JFK May 19, 07:00 UTCMay 19, 11:15 UTC4h 15m
2026-05-19 JBU264 SEA → JFK May 19, 06:59 UTCMay 19, 23:55 UTC16h 56m
2026-05-18 JBU263 JFK → SEA May 18, 22:10 UTCMay 19, 04:00 UTC5h 50m
2026-05-14 JBU965 BOS → RSW May 14, 17:02 UTCMay 14, 20:45 UTC3h 44m
2026-05-14 JBU965 BOS → RSW May 14, 17:05 UTCMay 15, 05:10 UTC12h 5m
2026-05-13 JBU966 BOS → ATL May 13, 14:35 UTCMay 14, 03:00 UTC12h 25m
2026-05-13 JBU836 MSP → BOS May 13, 01:17 UTCMay 13, 22:15 UTC20h 59m
2026-05-12 JBU836 MSP → BOS May 12, 20:15 UTCMay 13, 04:30 UTC8h 15m
2026-05-08 JBU939 JFK → SJD May 8, 13:25 UTCMay 9, 01:05 UTC11h 40m
2026-05-07 JBU939 JFK → SJD May 7, 13:40 UTCMay 8, 01:29 UTC11h 49m
2026-05-06 JBU610 DFW → JFK May 6, 09:53 UTCMay 6, 13:25 UTC3h 32m
2026-05-05 JBU1009 BOS → JFK May 5, 18:57 UTCMay 6, 13:25 UTC18h 28m
2026-05-04 JBU1818 POS → JFK May 4, 21:50 UTCMay 5, 02:30 UTC4h 40m
2026-05-04 JBU1818 POS → JFK May 4, 21:36 UTCMay 5, 19:55 UTC22h 20m
2026-05-04 JBU2709 BOS → JAX May 4, 03:00 UTCMay 4, 03:30 UTC30m
2026-05-04 JBU2709 BOS → JAX May 4, 02:57 UTCMay 4, 23:10 UTC20h 14m
2026-05-03 JBU939 JFK → SJD May 3, 12:25 UTCMay 4, 00:25 UTC12h 0m
2026-05-02 JBU2210 JAX → BOS May 2, 19:59 UTCMay 3, 16:40 UTC20h 41m
2026-05-02 JBU509 BOS → SEA May 2, 14:30 UTCMay 2, 23:20 UTC8h 50m
2026-05-01 JBU1817 JFK → POS May 1, 16:03 UTCMay 2, 15:15 UTC23h 13m
2026-05-01 JBU610 DFW → JFK May 1, 09:55 UTCMay 2, 02:45 UTC16h 51m
2026-04-30 JBU2210 JAX → BOS Apr 30, 19:53 UTCMay 1, 19:15 UTC23h 22m
2026-04-30 JBU509 BOS → SEA Apr 30, 14:25 UTCApr 30, 23:30 UTC9h 5m
2026-04-30 JBU2724 MCO → DCA Apr 30, 06:25 UTCApr 30, 10:55 UTC4h 30m
2026-04-29 JBU610 DFW → JFK Apr 29, 09:58 UTCApr 30, 09:15 UTC23h 17m
2026-04-29 JBU709 JFK → SJU Apr 29, 01:40 UTCApr 29, 13:25 UTC11h 45m
2026-04-28 JBU1483 JFK → MCO Apr 28, 11:20 UTCApr 29, 02:09 UTC14h 50m
2026-04-28 JBU836 MSP → BOS Apr 28, 01:02 UTCApr 28, 17:15 UTC16h 13m
2026-04-27 JBU836 MSP → BOS Apr 27, 19:30 UTCApr 28, 04:30 UTC9h 0m
2026-04-26 JBU509 BOS → SEA Apr 26, 14:42 UTCApr 27, 09:35 UTC18h 53m
2026-04-26 JBU836 MSP → BOS Apr 26, 00:46 UTCApr 26, 23:15 UTC22h 30m
2026-04-25 JBU836 MSP → BOS Apr 25, 20:00 UTCApr 26, 03:55 UTC7h 55m
2026-04-25 JBU1818 POS → JFK Apr 25, 00:15 UTCApr 25, 04:50 UTC4h 35m
2026-04-25 JBU1818 POS → JFK Apr 25, 00:04 UTCApr 25, 20:25 UTC20h 21m
2026-04-24 JBU1817 JFK → POS Apr 24, 18:00 UTCApr 24, 22:05 UTC4h 5m
2026-04-23 JBU1360 KIN → JFK Apr 23, 19:27 UTCApr 24, 18:20 UTC22h 53m
2026-04-23 JBU1360 KIN → JFK Apr 23, 14:15 UTCApr 23, 23:00 UTC8h 45m

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 N2047J page for operator, model, and routing details .

Mode-S A1A435 frequently asked

What is Mode-S code A1A435?
A1A435 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2047J.
Where is Mode-S A1A435 registered?
Mode-S code A1A435 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 A1A435 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1A435, octal 50322065, decimal 10,593,333.
What flights does A1A435 operate?
Mode-S A1A435 has broadcast 20 distinct callsigns, including JBU882, JBU881, JBU836, JBU1794, JBU2709.