sensors Mode-S transponder

A37F8D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3240J · operated by JETBLUE AIRWAYS CORP

Hex
A37F8D
Octal
50677615
Decimal
10,715,021
Country
US
Tail
N3240J
Type
BCS3
No current signal · last broadcast 6h ago
Flights observed
141
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A37F8D.

Country allocation

The ICAO 24-bit address A37F8D 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JBU471 BOS → SJC May 29, 20:45 UTCMay 29, 23:10 UTC2h 25m
2026-05-29 JBU272 FLL → LGA May 29, 16:30 UTCMay 29, 19:00 UTC2h 30m
2026-05-29 JBU1071 BOS → JFK May 29, 10:50 UTCMay 29, 13:10 UTC2h 20m
2026-05-28 JBU1062 SJU → BOS May 28, 12:15 UTCMay 28, 14:30 UTC2h 15m
2026-05-28 JBU1062 SJU → BOS May 28, 12:11 UTCMay 29, 11:15 UTC23h 4m
2026-05-27 JBU2421 BOS → PBI May 27, 00:39 UTCMay 27, 03:24 UTC2h 45m
2026-05-26 JBU400 MSY → BOS May 26, 18:55 UTCMay 26, 21:44 UTC2h 50m
2026-05-26 JBU401 BOS → MSY May 26, 14:14 UTCMay 26, 17:35 UTC3h 20m
2026-05-26 JBU540 JAX → LGA May 26, 11:39 UTCMay 26, 12:50 UTC1h 10m
2026-05-25 JBU743 JFK → ANU May 25, 14:25 UTCMay 25, 17:45 UTC3h 20m
2026-05-25 JBU2584 MCO → JFK May 25, 10:34 UTCMay 26, 03:45 UTC17h 11m
2026-05-25 JBU551 BOS → MCO May 25, 10:35 UTCMay 25, 12:55 UTC2h 20m
2026-05-25 JBU551 BOS → MCO May 25, 01:55 UTCMay 25, 04:30 UTC2h 35m
2026-05-24 JBU352 BOS → ACK May 24, 11:50 UTCMay 24, 14:15 UTC2h 25m
2026-05-23 JBU1515 JFK → SFO May 23, 09:59 UTCMay 24, 05:35 UTC19h 37m
2026-05-22 JBU1202 JFK → BUF May 22, 21:54 UTCMay 23, 13:05 UTC15h 11m
2026-05-22 JBU407 PWM → JFK May 22, 19:14 UTCMay 23, 13:05 UTC17h 51m
2026-05-22 JBU508 JFK → PWM May 22, 16:30 UTCMay 22, 17:15 UTC45m
2026-05-22 JBU508 JFK → PWM May 22, 16:30 UTCMay 23, 13:05 UTC20h 35m
2026-05-22 JBU1901 - May 22, 14:00 UTCMay 22, 14:55 UTC55m
2026-05-22 JBU1602 JFK → BUF May 22, 12:05 UTCMay 22, 13:00 UTC55m
2026-05-21 JBU244 PBI → EWR May 21, 16:20 UTCMay 21, 18:10 UTC1h 50m
2026-05-21 JBU244 PBI → EWR May 21, 16:16 UTCMay 22, 14:55 UTC22h 40m
2026-05-21 JBU243 JFK → BNA May 21, 13:01 UTCMay 21, 14:55 UTC1h 55m
2026-05-21 JBU254 DCA → BOS May 21, 10:20 UTCMay 21, 11:00 UTC40m
2026-05-20 JBU2355 BOS → DCA May 20, 23:40 UTCMay 21, 00:55 UTC1h 15m
2026-05-20 JBU400 MSY → BOS May 20, 15:50 UTCMay 20, 18:45 UTC2h 55m
2026-05-20 JBU401 BOS → MSY May 20, 11:10 UTCMay 20, 14:20 UTC3h 10m
2026-05-19 JBU2901 JFK → FLL May 19, 15:05 UTCMay 19, 15:15 UTC10m
2026-05-19 JBU1602 JFK → BUF May 19, 12:20 UTCMay 19, 13:20 UTC1h 0m
2026-05-19 JBU1602 JFK → BUF May 19, 12:19 UTCMay 20, 11:15 UTC22h 57m
2026-05-19 JBU372 FLL → LGA May 19, 06:55 UTCMay 19, 10:50 UTC3h 55m
2026-05-18 JBU255 JFK → PLS May 18, 13:30 UTCMay 19, 13:15 UTC23h 45m
2026-05-18 JBU117 BOS → ATL May 18, 10:27 UTCMay 19, 09:15 UTC22h 48m
2026-05-17 JBU449 BOS → FLL May 17, 20:21 UTCMay 18, 18:45 UTC22h 24m
2026-05-17 JBU173 FLL → PUJ May 17, 10:38 UTCMay 18, 03:35 UTC16h 58m
2026-05-16 JBU1360 KIN → JFK May 16, 21:09 UTCMay 17, 18:15 UTC21h 7m
2026-05-16 JBU1359 JFK → KIN May 16, 14:40 UTCMay 17, 12:30 UTC21h 51m
2026-05-16 JBU217 JFK → LGB May 16, 11:46 UTCMay 17, 11:15 UTC23h 30m
2026-05-16 JBU1484 RDU → BOS May 16, 11:46 UTCMay 16, 12:31 UTC45m
2026-05-15 JBU1484 RDU → BOS May 15, 23:50 UTCMay 16, 01:25 UTC1h 35m
2026-05-15 JBU2783 BOS → RDU May 15, 21:05 UTCMay 15, 22:30 UTC1h 25m
2026-05-15 JBU450 PHL → BOS May 15, 17:20 UTCMay 15, 19:30 UTC2h 10m
2026-05-15 JBU249 SAV → BOS May 15, 13:15 UTCMay 15, 15:15 UTC1h 59m
2026-05-15 JBU2468 CHS → BOS May 15, 10:05 UTCMay 15, 12:00 UTC1h 55m
2026-05-14 JBU1293 BOS → ILM May 14, 15:36 UTCMay 15, 15:15 UTC23h 39m
2026-05-14 JBU318 JFK → BOS May 14, 13:10 UTCMay 15, 11:15 UTC22h 6m
2026-05-14 JBU720 ATL → JFK May 14, 10:17 UTCMay 15, 01:15 UTC14h 59m
2026-05-14 JBU1419 BOS → JAX May 14, 02:44 UTCMay 15, 01:15 UTC22h 32m
2026-05-13 JBU1360 KIN → JFK May 13, 19:58 UTCMay 14, 19:15 UTC23h 18m

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 N3240J page for operator, model, and routing details .

Mode-S A37F8D frequently asked

What is Mode-S code A37F8D?
A37F8D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3240J.
Where is Mode-S A37F8D registered?
Mode-S code A37F8D 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 A37F8D broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A37F8D, octal 50677615, decimal 10,715,021.
What flights does A37F8D operate?
Mode-S A37F8D has broadcast 20 distinct callsigns, including JBU654, JBU1484, JBU720, JBU450, JBU401.