sensors Mode-S transponder

A874E1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N644JB · AIRBUS A-320 · operated by JETBLUE AIRWAYS CORP

Hex
A874E1
Octal
52072341
Decimal
11,039,969
Country
US
Tail
N644JB
Type
A320
Broadcasting now · callsign JBU2050 · 37,025 ft
Flights observed
95
Distinct callsigns
20
Country
US
Last broadcast
37m ago

Current position

A874E1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A874E1 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
JBU1833 JetBlue Airways 4 2026-04-18
JBU1457 JetBlue Airways 4 2026-05-08
JBU87 JetBlue Airways 3 2026-06-01
JBU499 JetBlue Airways 3 2026-05-25
JBU9 JetBlue Airways 2 2026-05-09
JBU88 JetBlue Airways 2 2026-06-01
JBU768 JetBlue Airways 2 2026-05-07
JBU688 JetBlue Airways 2 2026-04-17
JBU687 JetBlue Airways 2 2026-04-16
JBU488 - 2 2026-04-16
JBU2795 JetBlue Airways 2 2026-05-24
JBU2049 JetBlue Airways 2 2026-06-02
JBU1976 JetBlue Airways 2 2026-04-16
JBU1925 - 2 2026-04-17
JBU1868 JetBlue Airways 2 2026-05-10
JBU1799 JetBlue Airways 2 2026-04-19
JBU1797 JetBlue Airways 2 2026-05-27
JBU1719 JetBlue Airways 2 2026-05-23
JBU1718 JetBlue Airways 2 2026-05-23
JBU158 JetBlue Airways 2 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 JBU2049 BUF → RSW Jun 2, 15:35 UTCJun 2, 17:55 UTC2h 20m
2026-06-02 JBU2049 BUF → RSW Jun 2, 15:33 UTCJun 2, 20:15 UTC4h 42m
2026-06-01 JBU88 FLL → ALB Jun 1, 17:55 UTCJun 1, 18:15 UTC20m
2026-06-01 JBU87 ALB → FLL Jun 1, 14:10 UTCJun 1, 16:50 UTC2h 40m
2026-06-01 JBU87 ALB → FLL Jun 1, 14:08 UTCJun 2, 01:15 UTC11h 8m
2026-06-01 JBU2465 BUF → FLL Jun 1, 10:05 UTCJun 1, 12:30 UTC2h 25m
2026-05-31 JBU2466 FLL → BUF May 31, 22:20 UTCJun 1, 00:55 UTC2h 35m
2026-05-31 JBU88 FLL → ALB May 31, 18:15 UTCMay 31, 20:50 UTC2h 35m
2026-05-31 JBU87 ALB → FLL May 31, 14:15 UTCMay 31, 17:05 UTC2h 50m
2026-05-31 JBU1906 TPA → FLL May 31, 12:05 UTCMay 31, 12:50 UTC45m
2026-05-30 JBU1380 FLL → GUA May 30, 15:11 UTCMay 31, 14:15 UTC23h 5m
2026-05-29 JBU2940 SJU → STX May 29, 19:39 UTCMay 30, 18:15 UTC22h 37m
2026-05-29 JBU1553 FLL → SJU May 29, 15:25 UTCMay 30, 13:00 UTC21h 35m
2026-05-29 JBU959 BDL → FLL May 29, 11:09 UTCMay 30, 10:15 UTC23h 6m
2026-05-28 JBU304 SJU → JFK May 28, 22:28 UTCMay 29, 22:15 UTC23h 47m
2026-05-28 JBU2631 SJU → PUJ May 28, 19:04 UTCMay 29, 17:35 UTC22h 32m
2026-05-28 JBU1553 FLL → SJU May 28, 15:39 UTCMay 29, 13:50 UTC22h 11m
2026-05-28 JBU375 PVD → MCO May 28, 11:27 UTCMay 29, 04:05 UTC16h 38m
2026-05-27 JBU2760 SXM → FLL May 27, 19:20 UTCMay 28, 16:10 UTC20h 50m
2026-05-27 JBU1797 ATL → FLL May 27, 11:57 UTCMay 28, 03:15 UTC15h 18m
2026-05-27 JBU1797 ATL → FLL May 27, 12:00 UTCMay 27, 13:25 UTC1h 25m
2026-05-26 JBU1375 FLL → KIN May 26, 13:10 UTCMay 26, 13:40 UTC30m
2026-05-26 JBU1375 FLL → KIN May 26, 13:08 UTCMay 27, 12:15 UTC23h 8m
2026-05-25 JBU1171 LGA → FLL May 25, 22:40 UTCMay 26, 01:10 UTC2h 30m
2026-05-25 JBU598 MCO → LGA May 25, 19:10 UTCMay 25, 21:35 UTC2h 25m
2026-05-25 JBU499 LGA → MCO May 25, 14:25 UTCMay 25, 16:35 UTC2h 10m
2026-05-25 JBU172 FLL → LGA May 25, 10:40 UTCMay 25, 13:05 UTC2h 25m
2026-05-24 JBU2795 FLL → CUN May 24, 15:15 UTCMay 24, 16:45 UTC1h 30m
2026-05-24 JBU2795 FLL → CUN May 24, 15:14 UTCMay 25, 14:15 UTC23h 2m
2026-05-24 JBU27 BOS → BWI May 24, 10:10 UTCMay 24, 12:50 UTC2h 40m
2026-05-23 JBU526 MCO → EWR May 23, 23:05 UTCMay 24, 02:35 UTC3h 30m
2026-05-23 JBU1719 JFK → ATL May 23, 20:40 UTCMay 23, 21:05 UTC25m
2026-05-23 JBU1719 JFK → ATL May 23, 17:55 UTCMay 23, 18:30 UTC36m
2026-05-23 JBU1718 JFK → BOS May 23, 15:40 UTCMay 23, 16:15 UTC35m
2026-05-23 JBU1718 JFK → BOS May 23, 13:05 UTCMay 23, 13:15 UTC10m
2026-05-23 JBU1233 MCO → SJU May 23, 11:30 UTCMay 23, 11:50 UTC20m
2026-05-23 JBU1233 MCO → SJU May 23, 09:25 UTCMay 23, 10:00 UTC35m
2026-05-22 JBU251 BOS → MCO May 22, 02:02 UTCMay 22, 09:05 UTC7h 4m
2026-05-21 JBU1366 CUN → TPA May 21, 18:22 UTCMay 22, 09:05 UTC14h 44m
2026-05-20 JBU1640 SVD → JFK May 20, 22:40 UTCMay 21, 22:15 UTC23h 36m
2026-05-20 JBU1639 JFK → SVD May 20, 17:05 UTCMay 21, 00:00 UTC6h 55m
2026-05-17 JBU8584 MLB → BOS May 17, 17:20 UTCMay 17, 19:45 UTC2h 25m
2026-05-10 JBU8615 JFK → MCN May 10, 21:51 UTCMay 11, 00:34 UTC2h 44m
2026-05-10 JBU1868 PBI → HPN May 10, 15:24 UTCMay 10, 17:20 UTC1h 55m
2026-05-10 JBU1868 PBI → HPN May 10, 15:22 UTCMay 11, 00:34 UTC9h 13m
2026-05-10 JBU1867 HPN → PBI May 10, 11:50 UTCMay 10, 14:04 UTC2h 15m
2026-05-09 JBU9 JFK → FLL May 9, 18:00 UTCMay 9, 18:35 UTC35m
2026-05-09 JBU9 JFK → FLL May 9, 17:58 UTCMay 10, 16:14 UTC22h 17m
2026-05-08 JBU158 AUA → JFK May 8, 21:37 UTCMay 9, 18:35 UTC20h 58m
2026-05-08 JBU1457 JFK → AUA May 8, 15:45 UTCMay 8, 19:35 UTC3h 50m

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 N644JB page for operator, model, and routing details .

Mode-S A874E1 frequently asked

What is Mode-S code A874E1?
A874E1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N644JB.
Where is Mode-S A874E1 registered?
Mode-S code A874E1 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 A874E1 broadcasting right now?
Yes. Mode-S A874E1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A874E1, octal 52072341, decimal 11,039,969.
What flights does A874E1 operate?
Mode-S A874E1 has broadcast 20 distinct callsigns, including JBU1833, JBU1457, JBU87, JBU499, JBU9.