Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A79821

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N589JB · AIRBUS A-320 · operated by JETBLUE AIRWAYS CORP

Hex
A79821
Octal
51714041
Decimal
10,983,457
Country
US
Tail
N589JB
Type
A320
Broadcasting now · callsign JBU1739 · 38,000 ft
Flights observed
323
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Current position

A79821 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A79821 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
JBU350 JetBlue Airways 5 2026-06-02
JBU275 - 5 2026-07-20
JBU2089 JetBlue Airways 4 2026-06-22
JBU1903 - 4 2026-06-17
JBU1751 - 4 2026-07-09
JBU974 JetBlue Airways 3 2026-06-26
JBU936 JetBlue Airways 3 2026-07-20
JBU525 - 3 2026-04-13
JBU391 JetBlue Airways 3 2026-05-15
JBU2266 JetBlue Airways 3 2026-05-21
JBU2204 JetBlue Airways 3 2026-04-15
JBU2153 JetBlue Airways 3 2026-05-18
JBU1687 JetBlue Airways 3 2026-04-27
JBU1529 JetBlue Airways 3 2026-04-15
JBU1447 JetBlue Airways 3 2026-06-16
JBU1103 - 3 2026-04-15
JBU1072 - 3 2026-07-18
JBU1015 JetBlue Airways 3 2026-05-20
JBU969 JetBlue Airways 2 2026-06-07
JBU882 - 2 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU1680 FLL → DCA Jul 26, 16:56 UTCJul 26, 22:15 UTC5h 20m
2026-07-26 JBU2380 EWR → BOS Jul 26, 13:15 UTCJul 26, 14:15 UTC1h 0m
2026-07-26 JBU2380 EWR → BOS Jul 26, 13:10 UTCJul 26, 22:15 UTC9h 6m
2026-07-26 JBU2779 FLL → IAH Jul 26, 02:50 UTCJul 26, 04:50 UTC2h 0m
2026-07-25 JBU1383 PWM → LGA Jul 25, 18:15 UTCJul 25, 20:40 UTC2h 25m
2026-07-25 JBU455 BOS → DCA Jul 25, 00:51 UTCJul 25, 20:40 UTC19h 49m
2026-07-24 JBU1931 JFK → BDA Jul 24, 15:11 UTCJul 25, 12:30 UTC21h 19m
2026-07-23 JBU1039 JFK → BQN Jul 23, 19:27 UTCJul 24, 15:45 UTC20h 18m
2026-07-23 JBU485 ROC → JFK Jul 23, 16:35 UTCJul 23, 17:30 UTC55m
2026-07-23 JBU485 ROC → JFK Jul 23, 16:31 UTCJul 24, 15:45 UTC23h 14m
2026-07-23 JBU186 SAN → JFK Jul 23, 14:45 UTCJul 23, 15:35 UTC50m
2026-07-23 JBU66 RSW → BOS Jul 23, 09:05 UTCJul 23, 12:50 UTC3h 45m
2026-07-23 JBU65 JFK → ABQ Jul 23, 03:35 UTCJul 23, 07:40 UTC4h 5m
2026-07-23 JBU317 BOS → JFK Jul 23, 00:45 UTCJul 23, 01:25 UTC40m
2026-07-22 JBU8389 ALB → FLL Jul 22, 22:05 UTCJul 22, 22:35 UTC30m
2026-07-20 JBU936 SJU → STT Jul 20, 19:20 UTCJul 21, 05:05 UTC9h 45m
2026-07-20 JBU2537 SJU → SDQ Jul 20, 14:01 UTCJul 21, 05:05 UTC15h 4m
2026-07-20 JBU275 - Jul 20, 04:25 UTCJul 20, 04:45 UTC20m
2026-07-20 JBU275 - Jul 20, 01:00 UTCJul 20, 02:50 UTC1h 50m
2026-07-20 JBU275 BDL → SJU Jul 20, 00:57 UTCJul 21, 00:15 UTC23h 18m
2026-07-19 JBU438 MCO → BDL Jul 19, 21:00 UTCJul 19, 23:20 UTC2h 20m
2026-07-19 JBU1531 - Jul 19, 15:05 UTCJul 19, 17:35 UTC2h 30m
2026-07-18 JBU499 LGA → MCO Jul 18, 21:21 UTCJul 19, 20:15 UTC22h 55m
2026-07-18 JBU1072 FLL → LGA Jul 18, 10:20 UTCJul 19, 00:10 UTC13h 51m
2026-07-17 JBU8457 JAX → FLL Jul 17, 15:15 UTCJul 18, 14:15 UTC23h 1m
2026-07-16 JBU1742 - Jul 16, 21:30 UTCJul 16, 22:45 UTC1h 15m
2026-07-16 JBU1742 SJU → JAX Jul 16, 19:41 UTCJul 17, 16:10 UTC20h 29m
2026-07-16 JBU1089 EWR → SJU Jul 16, 10:09 UTCJul 16, 10:55 UTC46m
2026-07-16 JBU1089 - Jul 16, 10:10 UTCJul 16, 10:55 UTC45m
2026-07-16 JBU106 PPM → EWR Jul 16, 02:10 UTCJul 16, 04:45 UTC2h 35m
2026-07-15 JBU685 - Jul 15, 19:45 UTCJul 15, 22:05 UTC2h 20m
2026-07-14 JBU2008 FLL → PIT Jul 14, 22:53 UTCJul 15, 22:05 UTC23h 12m
2026-07-14 JBU2780 IAH → FLL Jul 14, 18:49 UTCJul 15, 18:15 UTC23h 26m
2026-07-14 JBU2179 - Jul 14, 15:00 UTCJul 14, 17:25 UTC2h 25m
2026-07-14 JBU2179 FLL → IAH Jul 14, 14:57 UTCJul 15, 12:20 UTC21h 23m
2026-07-14 JBU2117 - Jul 14, 11:40 UTCJul 14, 12:35 UTC55m
2026-07-13 JBU1383 GUA → FLL Jul 13, 18:09 UTCJul 14, 16:15 UTC22h 7m
2026-07-13 JBU1380 FLL → GUA Jul 13, 14:39 UTCJul 14, 12:35 UTC21h 57m
2026-07-13 JBU1071 LGA → FLL Jul 13, 10:12 UTCJul 13, 23:40 UTC13h 29m
2026-07-13 JBU572 FLL → LGA Jul 13, 00:52 UTCJul 13, 23:40 UTC22h 49m
2026-07-12 JBU38 SJO → FLL Jul 12, 20:25 UTCJul 13, 20:15 UTC23h 51m
2026-07-12 JBU2482 - Jul 12, 12:55 UTCJul 12, 14:50 UTC1h 55m
2026-07-12 JBU2482 BNA → FLL Jul 12, 12:54 UTCJul 13, 12:15 UTC23h 22m
2026-07-12 JBU2581 PPM → BNA Jul 12, 00:55 UTCJul 12, 02:45 UTC1h 50m
2026-07-11 JBU1972 - Jul 11, 20:40 UTCJul 11, 23:25 UTC2h 45m
2026-07-11 JBU1971 - Jul 11, 16:40 UTCJul 11, 19:20 UTC2h 40m
2026-07-11 JBU2282 - Jul 11, 12:05 UTCJul 11, 14:30 UTC2h 25m
2026-07-11 JBU2279 - Jul 11, 01:20 UTCJul 11, 03:40 UTC2h 20m
2026-07-10 JBU864 ORD → FLL Jul 10, 20:45 UTCJul 10, 23:20 UTC2h 35m
2026-07-10 JBU663 - Jul 10, 16:30 UTCJul 10, 19:30 UTC3h 0m

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 N589JB page for operator, model, and routing details .

Mode-S A79821 frequently asked

What is Mode-S code A79821?
A79821 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N589JB.
Where is Mode-S A79821 registered?
Mode-S code A79821 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 A79821 broadcasting right now?
Yes. Mode-S A79821 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A79821, octal 51714041, decimal 10,983,457.
What flights does A79821 operate?
Mode-S A79821 has broadcast 20 distinct callsigns, including JBU350, JBU275, JBU2089, JBU1903, JBU1751.