sensors Mode-S transponder

A38EF5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3284J · AIRBUS A220-300 · operated by JETBLUE AIRWAYS

Hex
A38EF5
Octal
50707365
Decimal
10,718,965
Country
US
Tail
N3284J
Type
BCS3
No current signal · last broadcast 41m ago
Flights observed
177
Distinct callsigns
20
Country
US
Last broadcast
41m ago

Last known position

Most recent position reported by Mode-S A38EF5.

Country allocation

The ICAO 24-bit address A38EF5 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
JBU127 JetBlue Airways 4 2026-05-09
JBU927 JetBlue Airways 3 2026-05-09
JBU879 - 3 2026-04-13
JBU828 JetBlue Airways 3 2026-05-09
JBU783 JetBlue Airways 3 2026-05-04
JBU484 JetBlue Airways 3 2026-05-05
JBU286 - 3 2026-04-13
JBU2754 JetBlue Airways 3 2026-05-29
JBU2626 JetBlue Airways 3 2026-05-01
JBU2625 JetBlue Airways 3 2026-05-03
JBU2028 JetBlue Airways 3 2026-05-09
JBU1910 JetBlue Airways 3 2026-04-16
JBU75 JetBlue Airways 2 2026-05-17
JBU519 JetBlue Airways 2 2026-05-18
JBU393 JetBlue Airways 2 2026-05-20
JBU312 JetBlue Airways 2 2026-05-26
JBU2932 JetBlue Airways 2 2026-04-21
JBU2931 JetBlue Airways 2 2026-04-21
JBU2737 JetBlue Airways 2 2026-05-13
JBU2584 JetBlue Airways 2 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JBU2754 DCA → BOS May 29, 23:40 UTCMay 30, 02:55 UTC3h 16m
2026-05-29 JBU1355 BOS → DCA May 29, 21:31 UTCMay 30, 02:55 UTC5h 25m
2026-05-29 JBU1806 BNA → BOS May 29, 18:15 UTCMay 29, 20:20 UTC2h 5m
2026-05-29 JBU1806 BNA → BOS May 29, 18:12 UTCMay 30, 02:55 UTC8h 44m
2026-05-29 JBU1807 BOS → BNA May 29, 14:00 UTCMay 29, 16:20 UTC2h 20m
2026-05-28 JBU2468 CHS → BOS May 28, 23:20 UTCMay 29, 01:05 UTC1h 45m
2026-05-28 JBU2467 BOS → CHS May 28, 19:45 UTCMay 28, 21:45 UTC2h 0m
2026-05-28 JBU204 BDA → BOS May 28, 17:20 UTCMay 28, 18:10 UTC50m
2026-05-28 JBU204 BDA → BOS May 28, 16:05 UTCMay 28, 16:10 UTC5m
2026-05-28 JBU203 BOS → BDA May 28, 14:10 UTCMay 28, 14:20 UTC10m
2026-05-28 JBU203 BOS → BDA May 28, 12:40 UTCMay 28, 13:10 UTC30m
2026-05-27 JBU1302 PHX → BOS May 27, 05:45 UTCMay 27, 10:10 UTC4h 26m
2026-05-27 JBU1302 PHX → BOS May 27, 05:43 UTCMay 28, 05:15 UTC23h 32m
2026-05-26 JBU1303 BOS → PHX May 26, 23:25 UTCMay 27, 04:24 UTC5h 0m
2026-05-26 JBU1786 PIT → BOS May 26, 20:09 UTCMay 26, 21:20 UTC1h 10m
2026-05-26 JBU1785 BOS → PIT May 26, 17:44 UTCMay 26, 19:05 UTC1h 20m
2026-05-26 JBU312 ORD → BOS May 26, 14:20 UTCMay 26, 16:05 UTC1h 45m
2026-05-26 JBU311 BOS → ORD May 26, 10:39 UTCMay 26, 12:54 UTC2h 15m
2026-05-25 JBU1018 JFK → BOS May 25, 13:45 UTCMay 26, 12:54 UTC23h 10m
2026-05-25 JBU1186 JFK → ROC May 25, 02:39 UTCMay 26, 01:14 UTC22h 36m
2026-05-24 JBU2584 MCO → JFK May 24, 10:24 UTCMay 25, 09:15 UTC22h 52m
2026-05-24 JBU2584 MCO → JFK May 24, 10:25 UTCMay 24, 12:30 UTC2h 5m
2026-05-23 JBU1440 LGB → SFO May 23, 11:09 UTCMay 24, 01:40 UTC14h 32m
2026-05-23 JBU1441 SFO → LGB May 23, 00:03 UTCMay 23, 23:15 UTC23h 13m
2026-05-23 JBU1441 SFO → LGB May 23, 00:05 UTCMay 23, 02:55 UTC2h 49m
2026-05-22 JBU400 MSY → BOS May 22, 18:55 UTCMay 22, 22:00 UTC3h 5m
2026-05-22 JBU401 BOS → MSY May 22, 14:30 UTCMay 22, 17:45 UTC3h 15m
2026-05-21 JBU1254 DCA → BOS May 21, 18:05 UTCMay 22, 17:15 UTC23h 10m
2026-05-21 JBU1055 BOS → DCA May 21, 15:29 UTCMay 22, 15:15 UTC23h 46m
2026-05-21 JBU2007 BOS → BNA May 21, 04:33 UTCMay 22, 03:15 UTC22h 43m
2026-05-20 JBU394 DEN → BOS May 20, 23:40 UTCMay 21, 23:15 UTC23h 36m
2026-05-20 JBU393 BOS → DEN May 20, 15:10 UTCMay 20, 19:25 UTC4h 15m
2026-05-20 JBU393 BOS → DEN May 20, 15:10 UTCMay 21, 13:15 UTC22h 6m
2026-05-20 JBU810 NAS → BOS May 20, 11:20 UTCMay 20, 13:50 UTC2h 30m
2026-05-19 JBU809 JFK → DFW May 19, 23:30 UTCMay 20, 01:50 UTC2h 20m
2026-05-19 JBU2554 DCA → BOS May 19, 20:00 UTCMay 19, 21:05 UTC1h 5m
2026-05-19 JBU2424 MCO → DCA May 19, 16:35 UTCMay 19, 18:25 UTC1h 50m
2026-05-18 JBU896 ATL → BOS May 18, 15:35 UTCMay 19, 02:15 UTC10h 40m
2026-05-18 JBU519 JFK → ATL May 18, 11:50 UTCMay 18, 13:40 UTC1h 50m
2026-05-18 JBU519 JFK → ATL May 18, 11:50 UTCMay 19, 02:15 UTC14h 25m
2026-05-18 JBU359 JFK → BUR May 18, 04:45 UTCMay 18, 09:35 UTC4h 50m
2026-05-17 JBU176 MSY → JFK May 17, 17:01 UTCMay 17, 17:15 UTC15m
2026-05-17 JBU75 JFK → MSY May 17, 12:55 UTCMay 17, 15:35 UTC2h 40m
2026-05-17 JBU75 JFK → MSY May 17, 12:53 UTCMay 18, 09:35 UTC20h 43m
2026-05-17 JBU1888 DCA → JFK May 17, 10:05 UTCMay 17, 10:50 UTC45m
2026-05-16 JBU2355 BOS → DCA May 16, 23:30 UTCMay 17, 00:40 UTC1h 10m
2026-05-16 JBU1006 PDX → JFK May 16, 18:05 UTCMay 16, 20:15 UTC2h 10m
2026-05-16 JBU1007 BOS → JFK May 16, 14:25 UTCMay 16, 16:40 UTC2h 15m
2026-05-15 JBU2324 MCO → DCA May 15, 20:15 UTCMay 16, 19:15 UTC23h 1m
2026-05-15 JBU2324 MCO → DCA May 15, 20:20 UTCMay 15, 22:05 UTC1h 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 N3284J page for operator, model, and routing details .

Mode-S A38EF5 frequently asked

What is Mode-S code A38EF5?
A38EF5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3284J.
Where is Mode-S A38EF5 registered?
Mode-S code A38EF5 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 A38EF5 broadcasting right now?
No active broadcast right now. Last signal was 41m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A38EF5, octal 50707365, decimal 10,718,965.
What flights does A38EF5 operate?
Mode-S A38EF5 has broadcast 20 distinct callsigns, including JBU127, JBU927, JBU879, JBU828, JBU783.