Apparatus

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sensors Mode-S transponder

A3401A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3085J · AIRBUS A220-300 · operated by JETBLUE AIRWAYS CORP

Hex
A3401A
Octal
50640032
Decimal
10,698,778
Country
US
Tail
N3085J
Type
BCS3
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
309
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A3401A.

Country allocation

The ICAO 24-bit address A3401A 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
JBU560 - 8 2026-07-14
JBU97 JetBlue Airways 5 2026-06-11
JBU2601 - 5 2026-06-26
JBU209 JetBlue Airways 5 2026-05-09
JBU203 JetBlue Airways 4 2026-07-24
JBU1496 JetBlue Airways 4 2026-05-17
JBU1495 JetBlue Airways 4 2026-05-17
JBU1173 JetBlue Airways 4 2026-05-30
JBU1007 JetBlue Airways 4 2026-04-17
JBU1006 JetBlue Airways 4 2026-04-17
JBU502 JetBlue Airways 3 2026-05-10
JBU2725 - 3 2026-06-29
JBU2494 - 3 2026-06-22
JBU249 - 3 2026-07-15
JBU2459 - 3 2026-07-13
JBU226 - 3 2026-06-28
JBU2255 - 3 2026-06-21
JBU1955 JetBlue Airways 3 2026-04-28
JBU125 - 3 2026-06-29
JBU1117 JetBlue Airways 3 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU1781 BOS → MCO Jul 26, 17:45 UTCJul 26, 20:15 UTC2h 30m
2026-07-26 JBU1781 BOS → MCO Jul 26, 17:43 UTCJul 26, 22:30 UTC4h 48m
2026-07-26 JBU1786 PIT → BOS Jul 26, 12:00 UTCJul 26, 13:20 UTC1h 20m
2026-07-25 JBU92 SLC → JFK Jul 25, 16:44 UTCJul 26, 16:30 UTC23h 47m
2026-07-25 JBU2091 JFK → ACK Jul 25, 14:08 UTCJul 26, 12:30 UTC22h 23m
2026-07-25 JBU2783 BOS → RDU Jul 25, 01:55 UTCJul 26, 00:30 UTC22h 35m
2026-07-24 JBU782 MBJ → JFK Jul 24, 23:19 UTCJul 25, 22:30 UTC23h 11m
2026-07-24 JBU203 BOS → BDA Jul 24, 12:49 UTCJul 25, 12:00 UTC23h 11m
2026-07-24 JBU203 BOS → BDA Jul 24, 12:50 UTCJul 24, 13:30 UTC40m
2026-07-23 JBU1096 ATL → BOS Jul 23, 23:20 UTCJul 24, 01:35 UTC2h 15m
2026-07-23 JBU419 JFK → ATL Jul 23, 20:00 UTCJul 23, 21:50 UTC1h 50m
2026-07-22 JBU1498 DEN → JFK Jul 22, 20:30 UTCJul 22, 23:50 UTC3h 20m
2026-07-22 JBU1498 DEN → JFK Jul 22, 20:28 UTCJul 23, 16:30 UTC20h 2m
2026-07-22 JBU1497 JFK → DEN Jul 22, 15:15 UTCJul 22, 19:20 UTC4h 5m
2026-07-21 JBU210 SDQ → JFK Jul 21, 18:30 UTCJul 21, 19:20 UTC50m
2026-07-20 JBU609 BOS → JAX Jul 20, 21:17 UTCJul 21, 18:30 UTC21h 13m
2026-07-20 JBU609 BOS → JAX Jul 20, 21:20 UTCJul 20, 21:55 UTC35m
2026-07-20 JBU1154 PBI → JFK Jul 20, 15:20 UTCJul 20, 17:40 UTC2h 20m
2026-07-20 JBU953 - Jul 20, 10:45 UTCJul 20, 13:10 UTC2h 25m
2026-07-20 JBU1154 PBI → JFK Jul 20, 03:15 UTCJul 20, 05:30 UTC2h 15m
2026-07-19 JBU545 ISP → PBI Jul 19, 23:25 UTCJul 20, 01:50 UTC2h 25m
2026-07-18 JBU544 PBI → ISP Jul 18, 17:35 UTCJul 18, 20:05 UTC2h 30m
2026-07-18 JBU953 - Jul 18, 11:25 UTCJul 18, 13:40 UTC2h 15m
2026-07-17 JBU1382 - Jul 17, 17:35 UTCJul 17, 20:50 UTC3h 15m
2026-07-17 JBU1382 IAH → JFK Jul 17, 17:31 UTCJul 18, 13:40 UTC20h 10m
2026-07-17 JBU1381 - Jul 17, 12:45 UTCJul 17, 15:49 UTC3h 5m
2026-07-17 JBU372 FLL → LGA Jul 17, 04:54 UTCJul 17, 08:54 UTC4h 0m
2026-07-16 JBU71 JFK → SLC Jul 16, 22:40 UTCJul 17, 02:59 UTC4h 20m
2026-07-16 JBU1716 - Jul 16, 18:44 UTCJul 16, 20:55 UTC2h 10m
2026-07-16 JBU1715 - Jul 16, 15:10 UTCJul 16, 17:20 UTC2h 10m
2026-07-15 JBU249 BOS → SAV Jul 15, 11:49 UTCJul 15, 21:40 UTC9h 51m
2026-07-14 JBU2251 BOS → MCO Jul 14, 18:04 UTCJul 15, 16:30 UTC22h 26m
2026-07-14 JBU806 BNA → BOS Jul 14, 14:08 UTCJul 15, 12:30 UTC22h 22m
2026-07-14 JBU560 PSQ → BOS Jul 14, 01:00 UTCJul 14, 01:55 UTC55m
2026-07-14 JBU560 PHL → BOS Jul 14, 00:59 UTCJul 15, 00:30 UTC23h 31m
2026-07-14 JBU560 PHL → PHL Jul 14, 00:30 UTCJul 14, 00:35 UTC5m
2026-07-14 JBU560 PHL → PHL Jul 14, 00:10 UTCJul 14, 00:25 UTC15m
2026-07-13 JBU560 PHL → PHL Jul 13, 23:50 UTCJul 14, 00:00 UTC10m
2026-07-13 JBU2459 BOS → PHL Jul 13, 22:40 UTCJul 13, 23:45 UTC1h 5m
2026-07-06 JBU165 BOS → RSW Jul 6, 10:49 UTCJul 7, 08:05 UTC21h 17m
2026-07-02 JBU419 JFK → ATL Jul 2, 20:18 UTCJul 3, 13:20 UTC17h 2m
2026-07-02 JBU1868 DAB → JFK Jul 2, 14:15 UTCJul 3, 11:35 UTC21h 20m
2026-07-02 JBU359 BUR → JFK Jul 2, 04:31 UTCJul 3, 00:30 UTC19h 59m
2026-07-01 JBU80 RNO → JFK Jul 1, 14:45 UTCJul 2, 14:30 UTC23h 45m
2026-06-30 JBU81 JFK → RNO Jun 30, 22:52 UTCJul 1, 22:30 UTC23h 39m
2026-06-30 JBU2901 JFK → FLL Jun 30, 20:10 UTCJul 1, 18:30 UTC22h 21m
2026-06-30 JBU626 TPA → JFK Jun 30, 13:24 UTCJul 1, 04:05 UTC14h 42m
2026-06-29 JBU125 - Jun 29, 17:05 UTCJun 29, 18:30 UTC1h 25m
2026-06-29 JBU125 JFK → TPA Jun 29, 17:04 UTCJun 30, 14:30 UTC21h 27m
2026-06-29 JBU626 TPA → JFK Jun 29, 13:19 UTCJun 29, 15:39 UTC2h 20m

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 N3085J page for operator, model, and routing details .

Mode-S A3401A frequently asked

What is Mode-S code A3401A?
A3401A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3085J.
Where is Mode-S A3401A registered?
Mode-S code A3401A 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 A3401A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3401A, octal 50640032, decimal 10,698,778.
What flights does A3401A operate?
Mode-S A3401A has broadcast 20 distinct callsigns, including JBU560, JBU97, JBU2601, JBU209, JBU203.