Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A39925

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3307J · operated by JETBLUE AIRWAYS

Hex
A39925
Octal
50714445
Decimal
10,721,573
Country
US
Tail
N3307J
Transponder active on ground
Flights observed
148
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A39925.

Country allocation

The ICAO 24-bit address A39925 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
JBU391 - 4 2026-07-12
JBU1290 JetBlue Airways 4 2026-07-22
JBU92 JetBlue Airways 3 2026-07-26
JBU677 - 3 2026-07-05
JBU2754 JetBlue Airways 3 2026-07-23
JBU203 - 3 2026-07-10
JBU1055 JetBlue Airways 3 2026-07-23
JBU953 - 2 2026-07-05
JBU8692 JetBlue Airways 2 2026-05-29
JBU8516 - 2 2026-06-19
JBU837 - 2 2026-07-01
JBU8366 JetBlue Airways 2 2026-06-14
JBU818 JetBlue Airways 2 2026-07-24
JBU806 - 2 2026-07-09
JBU66 JetBlue Airways 2 2026-06-10
JBU639 - 2 2026-06-27
JBU638 - 2 2026-06-28
JBU605 - 2 2026-06-24
JBU560 JetBlue Airways 2 2026-07-02
JBU53 - 2 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU92 SLC → JFK Jul 26, 16:13 UTCJul 26, 21:15 UTC5h 3m
2026-07-26 JBU185 ROC → JFK Jul 26, 01:05 UTCJul 26, 21:15 UTC20h 11m
2026-07-25 JBU717 BOS → JFK Jul 25, 16:55 UTCJul 26, 14:40 UTC21h 46m
2026-07-25 JBU1324 BOS → MVY Jul 25, 13:39 UTCJul 26, 12:10 UTC22h 32m
2026-07-24 JBU818 JFK → BOS Jul 24, 20:25 UTCJul 24, 21:00 UTC35m
2026-07-24 JBU818 JFK → BOS Jul 24, 20:20 UTCJul 25, 17:40 UTC21h 20m
2026-07-24 JBU1530 RSW → JFK Jul 24, 16:25 UTCJul 24, 18:55 UTC2h 30m
2026-07-24 JBU1529 JFK → RSW Jul 24, 12:45 UTCJul 24, 15:20 UTC2h 35m
2026-07-24 JBU1515 JFK → SFO Jul 24, 10:10 UTCJul 24, 10:55 UTC45m
2026-07-24 JBU845 BOS → SYR Jul 24, 01:55 UTCJul 24, 02:30 UTC35m
2026-07-23 JBU2754 DCA → BOS Jul 23, 22:30 UTCJul 23, 23:30 UTC1h 0m
2026-07-23 JBU1413 MVY → DCA Jul 23, 19:15 UTCJul 23, 20:30 UTC1h 15m
2026-07-23 JBU1414 DCA → MVY Jul 23, 17:00 UTCJul 23, 17:55 UTC55m
2026-07-23 JBU1055 BOS → DCA Jul 23, 14:45 UTCJul 23, 15:55 UTC1h 10m
2026-07-23 JBU248 LGB → OAK Jul 23, 09:05 UTCJul 23, 13:05 UTC4h 0m
2026-07-23 JBU247 OAK → LGB Jul 23, 03:05 UTCJul 23, 08:00 UTC4h 55m
2026-07-22 JBU1290 ILM → BOS Jul 22, 23:05 UTCJul 23, 00:35 UTC1h 30m
2026-07-22 JBU1293 BOS → ILM Jul 22, 18:25 UTCJul 22, 20:00 UTC1h 35m
2026-07-22 JBU1484 RDU → BOS Jul 22, 15:40 UTCJul 22, 17:00 UTC1h 20m
2026-07-22 JBU2785 JFK → RDU Jul 22, 02:30 UTCJul 22, 03:45 UTC1h 15m
2026-07-21 JBU994 DEN → BOS Jul 21, 06:38 UTCJul 22, 03:45 UTC21h 7m
2026-07-20 JBU1351 ACK → BOS Jul 20, 23:18 UTCJul 21, 21:15 UTC21h 57m
2026-07-20 JBU2666 HPN → ACK Jul 20, 21:05 UTCJul 20, 21:40 UTC35m
2026-07-20 JBU2666 HPN → ACK Jul 20, 21:01 UTCJul 21, 18:15 UTC21h 14m
2026-07-20 JBU2665 - Jul 20, 19:25 UTCJul 20, 20:05 UTC40m
2026-07-20 JBU1352 - Jul 20, 17:30 UTCJul 20, 17:50 UTC20m
2026-07-20 JBU484 - Jul 20, 13:35 UTCJul 20, 15:05 UTC1h 30m
2026-07-20 JBU1883 BOS → RDU Jul 20, 10:45 UTCJul 20, 12:15 UTC1h 30m
2026-07-20 JBU2322 PBI → BOS Jul 20, 00:15 UTCJul 20, 02:50 UTC2h 35m
2026-07-19 JBU2321 BOS → PBI Jul 19, 20:15 UTCJul 19, 23:05 UTC2h 50m
2026-07-19 JBU896 ATL → BOS Jul 19, 16:15 UTCJul 19, 18:25 UTC2h 10m
2026-07-18 JBU2902 JFK → BUF Jul 18, 20:45 UTCJul 18, 22:00 UTC1h 15m
2026-07-18 JBU2902 JFK → BUF Jul 18, 20:45 UTCJul 19, 18:30 UTC21h 46m
2026-07-18 JBU1520 - Jul 18, 14:30 UTCJul 18, 16:20 UTC1h 50m
2026-07-17 JBU1054 - Jul 17, 18:21 UTCJul 18, 16:25 UTC22h 5m
2026-07-17 JBU2754 - Jul 17, 00:50 UTCJul 17, 01:55 UTC1h 5m
2026-07-17 JBU2754 DCA → BOS Jul 17, 00:45 UTCJul 17, 23:14 UTC22h 30m
2026-07-16 JBU1413 - Jul 16, 19:35 UTCJul 16, 20:55 UTC1h 20m
2026-07-16 JBU1414 DCA → MVY Jul 16, 17:05 UTCJul 16, 18:05 UTC1h 0m
2026-07-16 JBU1055 - Jul 16, 14:35 UTCJul 16, 15:45 UTC1h 10m
2026-07-15 JBU400 MSY → BOS Jul 15, 19:46 UTCJul 16, 17:14 UTC21h 29m
2026-07-15 JBU401 BOS → MSY Jul 15, 15:21 UTCJul 16, 15:14 UTC23h 54m
2026-07-15 JBU1192 TPA → BOS Jul 15, 10:32 UTCJul 16, 02:45 UTC16h 13m
2026-07-15 JBU591 BOS → TPA Jul 15, 01:14 UTCJul 15, 23:10 UTC21h 56m
2026-07-14 JBU2152 SJU → TPA Jul 14, 17:11 UTCJul 15, 15:15 UTC22h 4m
2026-07-14 JBU2601 HPN → SJU Jul 14, 12:03 UTCJul 15, 11:15 UTC23h 12m
2026-07-13 JBU2602 SJU → HPN Jul 13, 21:47 UTCJul 14, 21:15 UTC23h 29m
2026-07-13 JBU1048 SJU → PHL Jul 13, 12:09 UTCJul 14, 01:20 UTC13h 12m
2026-07-12 JBU391 BOS → TPA Jul 12, 20:35 UTCJul 13, 17:40 UTC21h 6m
2026-07-12 JBU1238 - Jul 12, 15:15 UTCJul 12, 19:01 UTC3h 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 N3307J page for operator, model, and routing details .

Mode-S A39925 frequently asked

What is Mode-S code A39925?
A39925 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3307J.
Where is Mode-S A39925 registered?
Mode-S code A39925 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 A39925 broadcasting right now?
Mode-S A39925 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A39925, octal 50714445, decimal 10,721,573.
What flights does A39925 operate?
Mode-S A39925 has broadcast 20 distinct callsigns, including JBU391, JBU1290, JBU92, JBU677, JBU2754.