Apparatus

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sensors Mode-S transponder

A37FD3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3242J · operated by JETBLUE AIRWAYS CORP

Hex
A37FD3
Octal
50677723
Decimal
10,715,091
Country
US
Tail
N3242J
Type
BCS3
Broadcasting now · callsign JBU359 · 37,000 ft
Flights observed
346
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Current position

A37FD3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A37FD3 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
JBU68 - 4 2026-06-20
JBU401 - 4 2026-06-13
JBU400 JetBlue Airways 4 2026-05-04
JBU312 JetBlue Airways 4 2026-06-29
JBU2473 JetBlue Airways 4 2026-05-09
JBU204 - 4 2026-04-16
JBU1814 - 4 2026-07-22
JBU1813 - 4 2026-07-22
JBU1782 - 4 2026-06-28
JBU95 JetBlue Airways 3 2026-06-02
JBU870 JetBlue Airways 3 2026-04-13
JBU811 - 3 2026-07-21
JBU810 - 3 2026-07-02
JBU72 JetBlue Airways 3 2026-04-17
JBU71 JetBlue Airways 3 2026-04-17
JBU641 JetBlue Airways 3 2026-06-03
JBU618 JetBlue Airways 3 2026-06-10
JBU519 - 3 2026-04-17
JBU396 JetBlue Airways 3 2026-06-02
JBU391 JetBlue Airways 3 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU1351 ACK → BOS Jul 26, 22:10 UTCJul 26, 22:35 UTC25m
2026-07-26 JBU2666 HPN → ACK Jul 26, 20:05 UTCJul 26, 20:45 UTC40m
2026-07-26 JBU2665 ACK → HPN Jul 26, 18:15 UTCJul 26, 18:50 UTC35m
2026-07-26 JBU1352 MCO → BOS Jul 26, 16:30 UTCJul 26, 17:00 UTC30m
2026-07-26 JBU484 - Jul 26, 13:40 UTCJul 26, 15:10 UTC1h 30m
2026-07-26 JBU1883 BOS → RDU Jul 26, 10:45 UTCJul 26, 12:20 UTC1h 35m
2026-07-25 JBU791 BOS → TPA Jul 25, 11:34 UTCJul 26, 10:45 UTC23h 12m
2026-07-25 JBU994 DEN → BOS Jul 25, 06:25 UTCJul 25, 06:45 UTC20m
2026-07-25 JBU994 DEN → BOS Jul 25, 06:23 UTCJul 26, 04:45 UTC22h 22m
2026-07-25 JBU97 JFK → DEN Jul 25, 01:08 UTCJul 26, 00:45 UTC23h 37m
2026-07-25 JBU97 JFK → DEN Jul 25, 01:10 UTCJul 25, 04:50 UTC3h 40m
2026-07-24 JBU237 BDL → MCO Jul 24, 14:30 UTCJul 24, 22:50 UTC8h 20m
2026-07-23 JBU677 JFK → JAX Jul 23, 18:45 UTCJul 24, 15:50 UTC21h 5m
2026-07-23 JBU2783 BOS → RDU Jul 23, 02:30 UTCJul 24, 00:05 UTC21h 35m
2026-07-22 JBU1814 - Jul 22, 22:25 UTCJul 22, 22:45 UTC20m
2026-07-22 JBU1814 ORF → BOS Jul 22, 22:24 UTCJul 23, 20:45 UTC22h 21m
2026-07-22 JBU1813 BOS → ORF Jul 22, 19:40 UTCJul 22, 21:05 UTC1h 25m
2026-07-22 JBU1813 BOS → ORF Jul 22, 19:40 UTCJul 23, 18:45 UTC23h 5m
2026-07-22 JBU8360 RIC → BOS Jul 22, 15:55 UTCJul 22, 17:35 UTC1h 40m
2026-07-21 JBU811 BOS → ORD Jul 21, 00:08 UTCJul 21, 05:45 UTC5h 37m
2026-07-21 JBU811 - Jul 21, 00:10 UTCJul 21, 00:45 UTC35m
2026-07-20 JBU2184 - Jul 20, 21:05 UTCJul 20, 22:45 UTC1h 40m
2026-07-20 JBU2184 RDU → BOS Jul 20, 21:05 UTCJul 21, 05:45 UTC8h 40m
2026-07-20 JBU2283 - Jul 20, 17:25 UTCJul 20, 18:35 UTC1h 10m
2026-07-20 JBU2283 - Jul 20, 17:05 UTCJul 20, 17:20 UTC15m
2026-07-20 JBU554 DCA → BOS Jul 20, 14:35 UTCJul 20, 15:45 UTC1h 10m
2026-07-20 JBU2255 BOS → DCA Jul 20, 12:00 UTCJul 20, 13:15 UTC1h 15m
2026-07-19 JBU2229 BOS → MKE Jul 19, 11:25 UTCJul 19, 13:35 UTC2h 10m
2026-07-19 JBU2229 BOS → MKE Jul 19, 11:22 UTCJul 20, 04:50 UTC17h 29m
2026-07-18 JBU2033 - Jul 18, 13:35 UTCJul 18, 17:05 UTC3h 30m
2026-07-18 JBU2033 BOS → IAH Jul 18, 13:35 UTCJul 19, 12:45 UTC23h 11m
2026-07-17 JBU1500 DAB → BOS Jul 17, 18:22 UTCJul 18, 12:45 UTC18h 24m
2026-07-17 JBU1192 TPA → BOS Jul 17, 10:35 UTCJul 17, 13:15 UTC2h 40m
2026-07-17 JBU1192 TPA → BOS Jul 17, 10:33 UTCJul 18, 08:30 UTC21h 58m
2026-07-16 JBU2601 HPN → SJU Jul 16, 12:02 UTCJul 17, 10:44 UTC22h 43m
2026-07-15 JBU2602 SJU → HPN Jul 15, 21:55 UTCJul 16, 19:50 UTC21h 55m
2026-07-15 JBU1048 - Jul 15, 14:25 UTCJul 15, 15:15 UTC50m
2026-07-15 JBU1048 - Jul 15, 11:50 UTCJul 15, 12:00 UTC10m
2026-07-15 JBU1048 SJU → PHL Jul 15, 11:46 UTCJul 16, 01:50 UTC14h 4m
2026-07-14 JBU1439 BOS → AUS Jul 14, 10:19 UTCJul 15, 04:05 UTC17h 46m
2026-07-14 JBU1439 BOS → AUS Jul 14, 10:20 UTCJul 14, 13:50 UTC3h 30m
2026-07-13 JBU896 - Jul 13, 16:20 UTCJul 13, 16:45 UTC25m
2026-07-13 JBU1097 - Jul 13, 12:55 UTCJul 13, 15:10 UTC2h 15m
2026-07-13 JBU1097 BOS → ATL Jul 13, 12:52 UTCJul 14, 12:45 UTC23h 54m
2026-07-13 JBU207 - Jul 13, 10:10 UTCJul 13, 11:00 UTC50m
2026-07-12 JBU2116 BUF → BOS Jul 12, 14:59 UTCJul 13, 14:45 UTC23h 47m
2026-07-12 JBU506 BNA → BOS Jul 12, 02:03 UTCJul 13, 00:45 UTC22h 43m
2026-07-11 JBU507 BOS → BNA Jul 11, 22:04 UTCJul 12, 18:45 UTC20h 42m
2026-07-11 JBU507 - Jul 11, 22:05 UTCJul 12, 00:40 UTC2h 35m
2026-07-11 JBU494 DEN → BOS Jul 11, 17:00 UTCJul 11, 20:20 UTC3h 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 N3242J page for operator, model, and routing details .

Mode-S A37FD3 frequently asked

What is Mode-S code A37FD3?
A37FD3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3242J.
Where is Mode-S A37FD3 registered?
Mode-S code A37FD3 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 A37FD3 broadcasting right now?
Yes. Mode-S A37FD3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A37FD3, octal 50677723, decimal 10,715,091.
What flights does A37FD3 operate?
Mode-S A37FD3 has broadcast 20 distinct callsigns, including JBU68, JBU401, JBU400, JBU312, JBU2473.