Apparatus

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sensors Mode-S transponder

A81ABE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N621JB · AIRBUS A-320 · operated by JETBLUE AIRWAYS

Hex
A81ABE
Octal
52015276
Decimal
11,016,894
Country
US
Tail
N621JB
Type
A320
No current signal · last broadcast 1h ago
Flights observed
166
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A81ABE.

Country allocation

The ICAO 24-bit address A81ABE 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
JBU503 JetBlue Airways 4 2026-05-03
JBU697 JetBlue Airways 3 2026-05-17
JBU696 JetBlue Airways 3 2026-05-17
JBU499 JetBlue Airways 3 2026-05-01
JBU461 JetBlue Airways 3 2026-05-05
JBU2054 JetBlue Airways 3 2026-05-22
JBU1751 JetBlue Airways 3 2026-05-14
JBU1134 JetBlue Airways 3 2026-05-09
JBU1128 JetBlue Airways 3 2026-05-01
JBU997 JetBlue Airways 2 2026-04-16
JBU972 JetBlue Airways 2 2026-04-16
JBU968 JetBlue Airways 2 2026-04-17
JBU932 JetBlue Airways 2 2026-05-17
JBU929 JetBlue Airways 2 2026-05-08
JBU928 JetBlue Airways 2 2026-05-08
JBU854 JetBlue Airways 2 2026-05-07
JBU754 JetBlue Airways 2 2026-05-04
JBU553 JetBlue Airways 2 2026-05-19
JBU538 JetBlue Airways 2 2026-05-26
JBU53 - 2 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JBU1739 SYR → FLL May 29, 13:56 UTCMay 29, 23:20 UTC9h 25m
2026-05-29 JBU1979 DCA → FLL May 29, 00:25 UTCMay 29, 02:50 UTC2h 25m
2026-05-29 JBU1979 DCA → FLL May 29, 00:25 UTCMay 29, 23:20 UTC22h 56m
2026-05-28 JBU1880 FLL → DCA May 28, 20:25 UTCMay 28, 22:30 UTC2h 5m
2026-05-28 JBU513 ISP → FLL May 28, 16:30 UTCMay 28, 19:00 UTC2h 30m
2026-05-27 JBU2488 SDQ → FLL May 27, 22:52 UTCMay 28, 21:30 UTC22h 38m
2026-05-27 JBU2488 SDQ → FLL May 27, 21:10 UTCMay 28, 00:55 UTC3h 45m
2026-05-27 JBU2549 FLL → SDQ May 27, 19:50 UTCMay 27, 20:10 UTC20m
2026-05-27 JBU2097 JFK → PVR May 27, 16:35 UTCMay 27, 18:05 UTC1h 30m
2026-05-27 JBU1698 FLL → ATL May 27, 13:45 UTCMay 27, 15:10 UTC1h 25m
2026-05-27 JBU1145 RIC → FLL May 27, 10:45 UTCMay 27, 12:45 UTC2h 0m
2026-05-26 JBU538 BQN → JFK May 26, 10:31 UTCMay 27, 02:24 UTC15h 54m
2026-05-26 JBU538 BQN → JFK May 26, 03:55 UTCMay 26, 14:05 UTC10h 10m
2026-05-26 JBU1274 CHS → JFK May 26, 00:39 UTCMay 26, 02:15 UTC1h 35m
2026-05-25 JBU2473 JFK → CHS May 25, 20:04 UTCMay 25, 21:45 UTC1h 40m
2026-05-25 JBU120 MCO → ALB May 25, 01:19 UTCMay 25, 21:45 UTC20h 26m
2026-05-24 JBU119 ALB → MCO May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 JBU119 ALB → MCO May 24, 21:43 UTCMay 25, 21:30 UTC23h 47m
2026-05-24 JBU684 RDU → BOS May 24, 17:20 UTCMay 24, 19:40 UTC2h 20m
2026-05-24 JBU229 BQN → MCO May 24, 09:45 UTCMay 24, 15:35 UTC5h 50m
2026-05-23 JBU2656 MCO → SYR May 23, 20:01 UTCMay 24, 19:30 UTC23h 29m
2026-05-23 JBU2656 MCO → SYR May 23, 20:05 UTCMay 23, 22:25 UTC2h 20m
2026-05-23 JBU240 SRQ → BOS May 23, 17:30 UTCMay 23, 18:20 UTC50m
2026-05-23 JBU1493 EWR → STI May 23, 15:40 UTCMay 23, 16:00 UTC20m
2026-05-23 JBU2282 DFW → FLL May 23, 11:35 UTCMay 23, 14:00 UTC2h 25m
2026-05-23 JBU2279 FLL → DFW May 23, 01:15 UTCMay 23, 04:00 UTC2h 44m
2026-05-22 JBU2694 JFK → BOS May 22, 22:35 UTCMay 22, 23:10 UTC35m
2026-05-22 JBU1693 FLL → NAS May 22, 20:20 UTCMay 22, 20:40 UTC20m
2026-05-22 JBU2054 SJU → FLL May 22, 18:05 UTCMay 22, 18:35 UTC30m
2026-05-22 JBU2054 SJU → FLL May 22, 16:05 UTCMay 22, 16:20 UTC15m
2026-05-22 JBU1903 JFK → SJU May 22, 13:55 UTCMay 22, 14:15 UTC20m
2026-05-22 JBU1903 JFK → SJU May 22, 11:35 UTCMay 22, 11:55 UTC20m
2026-05-22 JBU404 SJU → JFK May 22, 01:10 UTCMay 22, 02:10 UTC1h 0m
2026-05-21 JBU404 SJU → JFK May 21, 23:00 UTCMay 21, 23:10 UTC10m
2026-05-21 JBU1453 FLL → SJU May 21, 21:15 UTCMay 21, 21:25 UTC10m
2026-05-21 JBU1453 FLL → SJU May 21, 19:20 UTCMay 21, 19:50 UTC30m
2026-05-21 JBU579 DCA → FLL May 21, 15:35 UTCMay 21, 17:45 UTC2h 10m
2026-05-21 JBU1480 FLL → DCA May 21, 11:40 UTCMay 21, 13:40 UTC2h 0m
2026-05-20 JBU1371 LGA → FLL May 20, 18:19 UTCMay 21, 17:30 UTC23h 12m
2026-05-20 JBU1145 RIC → FLL May 20, 10:09 UTCMay 20, 20:45 UTC10h 37m
2026-05-19 JBU1703 SJU → MDE May 19, 14:45 UTCMay 19, 15:00 UTC15m
2026-05-19 JBU1703 SJU → MDE May 19, 14:41 UTCMay 20, 12:00 UTC21h 20m
2026-05-19 JBU553 FLL → SJU May 19, 12:45 UTCMay 19, 13:00 UTC15m
2026-05-19 JBU553 FLL → SJU May 19, 10:55 UTCMay 19, 11:20 UTC25m
2026-05-19 JBU571 LGA → FLL May 19, 01:25 UTCMay 19, 03:40 UTC2h 15m
2026-05-18 JBU472 SJC → BOS May 18, 21:20 UTCMay 18, 23:45 UTC2h 25m
2026-05-17 JBU697 BOS → ATL May 17, 23:56 UTCMay 18, 23:30 UTC23h 34m
2026-05-17 JBU932 IAH → BOS May 17, 18:20 UTCMay 17, 21:35 UTC3h 15m
2026-05-17 JBU932 IAH → BOS May 17, 18:17 UTCMay 18, 16:50 UTC22h 34m
2026-05-17 JBU2033 BOS → IAH May 17, 13:31 UTCMay 17, 17:01 UTC3h 30m

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 N621JB page for operator, model, and routing details .

Mode-S A81ABE frequently asked

What is Mode-S code A81ABE?
A81ABE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N621JB.
Where is Mode-S A81ABE registered?
Mode-S code A81ABE 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 A81ABE broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A81ABE, octal 52015276, decimal 11,016,894.
What flights does A81ABE operate?
Mode-S A81ABE has broadcast 20 distinct callsigns, including JBU503, JBU697, JBU696, JBU499, JBU461.