Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A8021B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N615JB · AIRBUS A-320 · operated by JETBLUE AIRWAYS

Hex
A8021B
Octal
52001033
Decimal
11,010,587
Country
US
Tail
N615JB
Type
A320
Broadcasting now · callsign JBU2275 · 650 ft
Flights observed
147
Distinct callsigns
20
Country
US
Last broadcast
57m ago

Current position

A8021B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A8021B 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
JBU869 JetBlue Airways 3 2026-05-19
JBU41 JetBlue Airways 3 2026-05-12
JBU1604 JetBlue Airways 3 2026-04-18
JBU1233 JetBlue Airways 3 2026-05-10
JBU968 JetBlue Airways 2 2026-04-29
JBU929 - 2 2026-04-13
JBU928 - 2 2026-04-13
JBU845 JetBlue Airways 2 2026-04-16
JBU743 JetBlue Airways 2 2026-05-07
JBU688 JetBlue Airways 2 2026-04-14
JBU613 JetBlue Airways 2 2026-05-04
JBU553 JetBlue Airways 2 2026-05-26
JBU536 JetBlue Airways 2 2026-05-17
JBU525 JetBlue Airways 2 2026-04-25
JBU522 JetBlue Airways 2 2026-05-20
JBU454 JetBlue Airways 2 2026-04-16
JBU390 JetBlue Airways 2 2026-05-13
JBU366 JetBlue Airways 2 2026-04-15
JBU251 JetBlue Airways 2 2026-04-23
JBU2486 JetBlue Airways 2 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JBU2275 DCA → BOS May 29, 22:40 UTCMay 30, 00:45 UTC2h 5m
2026-05-29 JBU2276 FLL → PHL May 29, 19:05 UTCMay 29, 21:20 UTC2h 15m
2026-05-29 JBU1948 FLL → MCO May 29, 00:24 UTCMay 29, 22:45 UTC22h 22m
2026-05-28 JBU827 JFK → SDQ May 28, 18:40 UTCMay 29, 16:45 UTC22h 6m
2026-05-28 JBU2096 CUN → FLL May 28, 15:14 UTCMay 29, 14:00 UTC22h 46m
2026-05-28 JBU1284 MCO → JFK May 28, 01:56 UTCMay 29, 00:45 UTC22h 49m
2026-05-27 JBU2890 SJU → EWR May 27, 12:36 UTCMay 28, 10:45 UTC22h 9m
2026-05-26 JBU1607 SJU → STI May 26, 20:03 UTCMay 27, 16:25 UTC20h 22m
2026-05-26 JBU1731 SLC → LAX May 26, 15:45 UTCMay 26, 15:54 UTC10m
2026-05-26 JBU1731 SLC → LAX May 26, 15:42 UTCMay 27, 12:50 UTC21h 9m
2026-05-26 JBU553 FLL → SJU May 26, 04:35 UTCMay 26, 04:54 UTC20m
2026-05-26 JBU553 FLL → SJU May 26, 02:39 UTCMay 26, 03:05 UTC25m
2026-05-25 JBU369 BOS → FLL May 25, 22:40 UTCMay 26, 01:30 UTC2h 50m
2026-05-25 JBU470 FLL → BOS May 25, 01:55 UTCMay 25, 03:05 UTC1h 10m
2026-05-24 JBU2128 MCO → EWR May 24, 02:53 UTCMay 25, 02:45 UTC23h 52m
2026-05-23 JBU1368 PBI → HPN May 23, 10:07 UTCMay 24, 05:15 UTC19h 9m
2026-05-22 JBU1142 PBI → BDL May 22, 19:17 UTCMay 23, 18:45 UTC23h 29m
2026-05-22 JBU1953 JFK → PBI May 22, 15:51 UTCMay 23, 14:45 UTC22h 54m
2026-05-21 JBU237 BDL → MCO May 21, 19:36 UTCMay 22, 18:05 UTC22h 29m
2026-05-21 JBU237 BDL → MCO May 21, 19:40 UTCMay 21, 20:10 UTC30m
2026-05-21 JBU1226 TPA → JFK May 21, 14:55 UTCMay 21, 17:15 UTC2h 20m
2026-05-20 JBU1694 MCO → HPN May 20, 20:21 UTCMay 21, 16:45 UTC20h 25m
2026-05-20 JBU522 PBI → BOS May 20, 16:32 UTCMay 21, 14:45 UTC22h 14m
2026-05-20 JBU522 PBI → BOS May 20, 13:40 UTCMay 20, 18:15 UTC4h 35m
2026-05-19 JBU869 JFK → DEN May 19, 12:10 UTCMay 19, 12:45 UTC35m
2026-05-19 JBU869 JFK → DEN May 19, 12:08 UTCMay 20, 03:45 UTC15h 37m
2026-05-18 JBU2838 BQN → JFK May 18, 09:06 UTCMay 18, 23:45 UTC14h 39m
2026-05-17 JBU536 LAX → SFO May 17, 20:04 UTCMay 18, 16:00 UTC19h 57m
2026-05-17 JBU536 LAX → SFO May 17, 14:55 UTCMay 17, 23:45 UTC8h 50m
2026-05-16 JBU1188 SXM → JFK May 16, 18:44 UTCMay 17, 15:40 UTC20h 57m
2026-05-16 JBU1188 SXM → JFK May 16, 13:21 UTCMay 16, 22:30 UTC9h 10m
2026-05-15 JBU1760 KIN → JFK May 15, 18:15 UTCMay 16, 02:30 UTC8h 15m
2026-05-14 JBU193 JFK → MCO May 14, 23:44 UTCMay 15, 20:35 UTC20h 51m
2026-05-14 JBU1230 CUN → EWR May 14, 16:56 UTCMay 15, 15:50 UTC22h 54m
2026-05-13 JBU390 SJU → EWR May 13, 21:05 UTCMay 14, 00:45 UTC3h 40m
2026-05-13 JBU390 SJU → EWR May 13, 21:01 UTCMay 14, 20:35 UTC23h 35m
2026-05-13 JBU1047 BOS → JFK May 13, 19:05 UTCMay 13, 19:25 UTC20m
2026-05-13 JBU1047 BOS → JFK May 13, 16:10 UTCMay 13, 16:40 UTC30m
2026-05-12 JBU41 FLL → MDE May 12, 19:10 UTCMay 12, 19:40 UTC30m
2026-05-12 JBU41 FLL → MDE May 12, 19:05 UTCMay 13, 16:40 UTC21h 36m
2026-05-12 JBU1327 FLL → MBJ May 12, 11:05 UTCMay 12, 15:01 UTC3h 55m
2026-05-11 JBU246 FLL → RIC May 11, 19:50 UTCMay 11, 21:40 UTC1h 50m
2026-05-11 JBU1101 JFK → FLL May 11, 15:15 UTCMay 11, 18:05 UTC2h 51m
2026-05-11 JBU1084 MCO → ISP May 11, 11:20 UTCMay 11, 13:20 UTC2h 0m
2026-05-11 JBU334 SFO → BOS May 11, 04:00 UTCMay 11, 04:50 UTC50m
2026-05-10 JBU1233 MCO → SJU May 10, 11:15 UTCMay 10, 11:35 UTC20m
2026-05-10 JBU1233 MCO → SJU May 10, 09:10 UTCMay 10, 09:50 UTC40m
2026-05-10 JBU1233 MCO → SJU May 10, 09:10 UTCMay 11, 04:55 UTC19h 45m
2026-05-08 JBU1778 LAS → BOS May 8, 17:05 UTCMay 8, 23:10 UTC6h 5m
2026-05-08 JBU337 JFK → STI May 8, 00:52 UTCMay 8, 23:25 UTC22h 33m

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 N615JB page for operator, model, and routing details .

Mode-S A8021B frequently asked

What is Mode-S code A8021B?
A8021B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N615JB.
Where is Mode-S A8021B registered?
Mode-S code A8021B 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 A8021B broadcasting right now?
Yes. Mode-S A8021B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8021B, octal 52001033, decimal 11,010,587.
What flights does A8021B operate?
Mode-S A8021B has broadcast 20 distinct callsigns, including JBU869, JBU41, JBU1604, JBU1233, JBU968.