Apparatus

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sensors Mode-S transponder

A398BC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3304J · operated by JETBLUE AIRWAYS

Hex
A398BC
Octal
50714274
Decimal
10,721,468
Country
US
Tail
N3304J
No current signal · last broadcast 3h ago
Flights observed
171
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A398BC.

Country allocation

The ICAO 24-bit address A398BC 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
JBU2011 - 5 2026-06-29
JBU625 - 4 2026-06-26
JBU509 JetBlue Airways 4 2026-06-13
JBU1963 - 4 2026-07-09
JBU92 - 3 2026-07-08
JBU71 - 3 2026-06-28
JBU401 - 3 2026-07-10
JBU2091 - 3 2026-07-08
JBU1516 - 3 2026-07-01
JBU130 JetBlue Airways 3 2026-06-08
JBU1117 JetBlue Airways 3 2026-06-02
JBU955 - 2 2026-06-24
JBU8692 JetBlue Airways 2 2026-05-20
JBU862 JetBlue Airways 2 2026-06-01
JBU591 - 2 2026-06-18
JBU59 - 2 2026-06-30
JBU554 JetBlue Airways 2 2026-06-09
JBU519 - 2 2026-07-07
JBU494 JetBlue Airways 2 2026-06-13
JBU374 - 2 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 JBU204 BDA → BOS Jul 13, 15:58 UTCJul 14, 02:45 UTC10h 48m
2026-07-13 JBU203 BOS → BDA Jul 13, 12:42 UTCJul 14, 02:45 UTC14h 4m
2026-07-13 JBU250 SAV → BOS Jul 13, 01:49 UTCJul 14, 01:00 UTC23h 12m
2026-07-12 JBU349 BOS → SAV Jul 12, 21:51 UTCJul 13, 21:00 UTC23h 10m
2026-07-12 JBU2432 LGA → ACK Jul 12, 17:40 UTCJul 13, 13:15 UTC19h 36m
2026-07-12 JBU831 ACK → LGA Jul 12, 15:33 UTCJul 13, 13:15 UTC21h 43m
2026-07-12 JBU1786 PIT → BOS Jul 12, 11:03 UTCJul 13, 05:10 UTC18h 8m
2026-07-11 JBU1055 BOS → DCA Jul 11, 15:02 UTCJul 12, 12:20 UTC21h 19m
2026-07-10 JBU400 MSY → BOS Jul 10, 20:07 UTCJul 11, 18:25 UTC22h 19m
2026-07-10 JBU401 BOS → MSY Jul 10, 15:55 UTCJul 10, 18:55 UTC3h 0m
2026-07-10 JBU401 BOS → MSY Jul 10, 15:54 UTCJul 11, 15:00 UTC23h 7m
2026-07-10 JBU1286 - Jul 10, 13:15 UTCJul 10, 14:35 UTC1h 20m
2026-07-10 JBU1285 - Jul 10, 10:35 UTCJul 10, 11:50 UTC1h 15m
2026-07-10 JBU1318 JFK → BOS Jul 10, 06:10 UTCJul 10, 06:45 UTC35m
2026-07-09 JBU1963 - Jul 9, 23:05 UTCJul 9, 23:40 UTC35m
2026-07-09 JBU210 SDQ → JFK Jul 9, 01:30 UTCJul 10, 00:55 UTC23h 26m
2026-07-08 JBU92 ACK → JFK Jul 8, 16:50 UTCJul 9, 15:00 UTC22h 10m
2026-07-08 JBU2091 - Jul 8, 14:05 UTCJul 8, 14:40 UTC35m
2026-07-08 JBU2091 JFK → ACK Jul 8, 14:01 UTCJul 9, 13:00 UTC23h 0m
2026-07-08 JBU2769 - Jul 8, 10:30 UTCJul 8, 11:40 UTC1h 10m
2026-07-07 JBU1520 ATL → JFK Jul 7, 14:30 UTCJul 8, 11:45 UTC21h 16m
2026-07-07 JBU519 JFK → ATL Jul 7, 11:05 UTCJul 7, 12:55 UTC1h 50m
2026-07-07 JBU519 JFK → ATL Jul 7, 11:05 UTCJul 8, 11:00 UTC23h 56m
2026-07-05 JBU1206 ORD → JFK Jul 5, 17:45 UTCJul 5, 19:30 UTC1h 45m
2026-07-04 JBU1963 HYA → JFK Jul 4, 20:23 UTCJul 5, 19:00 UTC22h 38m
2026-07-04 JBU372 SLC → JFK Jul 4, 04:46 UTCJul 4, 21:05 UTC16h 19m
2026-07-03 JBU508 JFK → PWM Jul 3, 17:29 UTCJul 4, 17:00 UTC23h 32m
2026-07-03 JBU1520 ATL → JFK Jul 3, 14:05 UTCJul 3, 16:00 UTC1h 55m
2026-07-02 JBU859 JFK → KIN Jul 2, 19:19 UTCJul 3, 18:15 UTC22h 57m
2026-07-02 JBU92 ACK → JFK Jul 2, 16:16 UTCJul 3, 15:00 UTC22h 44m
2026-07-02 JBU286 RDU → JFK Jul 2, 10:59 UTCJul 3, 04:10 UTC17h 11m
2026-07-02 JBU2754 DCA → BOS Jul 2, 00:05 UTCJul 2, 21:45 UTC21h 41m
2026-07-01 JBU1414 DCA → MVY Jul 1, 17:10 UTCJul 2, 17:00 UTC23h 50m
2026-07-01 JBU374 SYR → BOS Jul 1, 11:01 UTCJul 2, 04:20 UTC17h 20m
2026-07-01 JBU1516 JFK → SYR Jul 1, 02:52 UTCJul 2, 01:00 UTC22h 9m
2026-06-30 JBU341 JFK → SAV Jun 30, 20:10 UTCJul 1, 18:20 UTC22h 11m
2026-06-30 JBU59 - Jun 30, 09:20 UTCJun 30, 12:00 UTC2h 40m
2026-06-30 JBU59 JFK → KIN Jun 30, 09:19 UTCJul 1, 03:35 UTC18h 16m
2026-06-29 JBU2011 JFK → VPS Jun 29, 11:47 UTCJun 30, 11:00 UTC23h 14m
2026-06-29 JBU2011 - Jun 29, 11:50 UTCJun 29, 13:59 UTC2h 10m
2026-06-29 JBU372 SLC → JFK Jun 29, 04:45 UTCJun 29, 08:35 UTC3h 50m
2026-06-28 JBU71 - Jun 28, 22:39 UTCJun 29, 03:14 UTC4h 35m
2026-06-28 JBU1963 - Jun 28, 19:49 UTCJun 28, 20:29 UTC40m
2026-06-28 JBU1174 - Jun 28, 00:35 UTCJun 28, 02:34 UTC2h 0m
2026-06-28 JBU1174 BNA → JFK Jun 28, 00:32 UTCJun 28, 22:59 UTC22h 28m
2026-06-27 JBU1173 JFK → BNA Jun 27, 20:59 UTCJun 27, 22:49 UTC1h 50m
2026-06-27 JBU1060 JFK → JFK Jun 27, 09:55 UTCJun 27, 18:24 UTC8h 30m
2026-06-26 JBU26 TPA → JFK Jun 26, 23:00 UTCJun 27, 01:44 UTC2h 45m
2026-06-26 JBU625 - Jun 26, 19:14 UTCJun 26, 21:39 UTC2h 25m
2026-06-25 JBU71 JFK → SLC Jun 25, 23:20 UTCJun 26, 23:00 UTC23h 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 N3304J page for operator, model, and routing details .

Mode-S A398BC frequently asked

What is Mode-S code A398BC?
A398BC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3304J.
Where is Mode-S A398BC registered?
Mode-S code A398BC 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 A398BC broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A398BC, octal 50714274, decimal 10,721,468.
What flights does A398BC operate?
Mode-S A398BC has broadcast 20 distinct callsigns, including JBU2011, JBU625, JBU509, JBU1963, JBU92.