Apparatus

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sensors Mode-S transponder

ADD734

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N991JT · AIRBUS A-321 · operated by JETBLUE AIRWAYS CORP

Hex
ADD734
Octal
53353464
Decimal
11,392,820
Country
US
Tail
N991JT
Type
A321
Transponder active on ground
Flights observed
232
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S ADD734.

Country allocation

The ICAO 24-bit address ADD734 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
JBU920 JetBlue Airways 7 2026-05-11
JBU687 - 7 2026-07-19
JBU434 JetBlue Airways 6 2026-07-25
JBU733 - 5 2026-04-13
JBU619 JetBlue Airways 5 2026-06-03
JBU415 - 5 2026-07-16
JBU378 - 5 2026-07-20
JBU377 JetBlue Airways 5 2026-06-19
JBU778 - 4 2026-07-10
JBU620 JetBlue Airways 4 2026-06-03
JBU487 JetBlue Airways 4 2026-07-25
JBU289 JetBlue Airways 4 2026-05-11
JBU277 JetBlue Airways 4 2026-07-21
JBU2348 - 4 2026-07-09
JBU2120 JetBlue Airways 4 2026-06-02
JBU2073 - 4 2026-07-02
JBU1878 - 4 2026-07-18
JBU1874 - 4 2026-07-01
JBU1511 - 4 2026-07-14
JBU1177 JetBlue Airways 4 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU1574 LAX → EWR Jul 26, 04:05 UTCJul 26, 08:50 UTC4h 46m
2026-07-26 JBU1574 LAX → EWR Jul 26, 04:00 UTCJul 26, 23:00 UTC19h 1m
2026-07-25 JBU487 BOS → LAX Jul 25, 20:10 UTCJul 26, 01:35 UTC5h 25m
2026-07-25 JBU434 SFO → BOS Jul 25, 13:25 UTCJul 25, 19:00 UTC5h 35m
2026-07-25 JBU434 SFO → BOS Jul 25, 13:25 UTCJul 25, 18:25 UTC5h 0m
2026-07-25 JBU413 JFK → MCO Jul 25, 03:20 UTCJul 25, 09:15 UTC5h 55m
2026-07-24 JBU1634 JFK → BTV Jul 24, 21:00 UTCJul 25, 01:55 UTC4h 55m
2026-07-24 JBU15 JFK → SFO Jul 24, 13:40 UTCJul 24, 19:20 UTC5h 40m
2026-07-24 JBU1190 SAN → JFK Jul 24, 03:45 UTCJul 24, 08:45 UTC5h 0m
2026-07-23 JBU1189 JFK → SAN Jul 23, 21:15 UTCJul 24, 02:25 UTC5h 10m
2026-07-23 JBU116 JFK → SYR Jul 23, 13:15 UTCJul 23, 18:10 UTC4h 55m
2026-07-22 JBU348 LAS → JFK Jul 22, 18:45 UTCJul 22, 23:15 UTC4h 30m
2026-07-22 JBU348 LAS → JFK Jul 22, 18:40 UTCJul 23, 17:00 UTC22h 20m
2026-07-22 JBU1707 FLL → LAS Jul 22, 12:35 UTCJul 22, 17:05 UTC4h 30m
2026-07-21 JBU657 FLL → PHX Jul 21, 20:30 UTCJul 22, 00:55 UTC4h 25m
2026-07-21 JBU278 SFO → FLL Jul 21, 08:40 UTCJul 21, 09:00 UTC20m
2026-07-21 JBU277 FLL → SFO Jul 21, 01:55 UTCJul 21, 06:50 UTC4h 55m
2026-07-21 JBU277 FLL → SFO Jul 21, 01:52 UTCJul 22, 01:00 UTC23h 8m
2026-07-20 JBU378 SFO → FLL Jul 20, 19:00 UTCJul 21, 00:20 UTC5h 19m
2026-07-20 JBU413 BOS → SFO Jul 20, 03:15 UTCJul 20, 08:45 UTC5h 30m
2026-07-19 JBU1388 - Jul 19, 18:55 UTCJul 20, 00:05 UTC5h 10m
2026-07-19 JBU687 BOS → LAX Jul 19, 11:55 UTCJul 19, 17:10 UTC5h 15m
2026-07-18 JBU1878 - Jul 18, 17:25 UTCJul 18, 17:40 UTC15m
2026-07-18 JBU1878 SXM → BOS Jul 18, 17:00 UTCJul 19, 15:00 UTC22h 1m
2026-07-18 JBU1878 SXM → BOS Jul 18, 17:00 UTCJul 19, 15:00 UTC22h 1m
2026-07-18 JBU1877 BOS → SXM Jul 18, 11:45 UTCJul 18, 15:00 UTC3h 15m
2026-07-17 JBU15 JFK → SFO Jul 17, 12:20 UTCJul 18, 11:00 UTC22h 41m
2026-07-16 JBU415 JFK → SFO Jul 16, 20:29 UTCJul 17, 01:49 UTC5h 20m
2026-07-16 JBU415 JFK → SFO Jul 16, 20:26 UTCJul 17, 17:50 UTC21h 24m
2026-07-16 JBU515 JFK → SFO Jul 16, 01:49 UTCJul 17, 01:00 UTC23h 11m
2026-07-16 JBU515 JFK → SFO Jul 16, 01:50 UTCJul 16, 07:20 UTC5h 30m
2026-07-15 JBU348 - Jul 15, 18:50 UTCJul 15, 23:55 UTC5h 5m
2026-07-15 JBU1707 - Jul 15, 12:40 UTCJul 15, 16:55 UTC4h 15m
2026-07-15 JBU608 LAS → FLL Jul 15, 05:40 UTCJul 15, 10:10 UTC4h 30m
2026-07-14 JBU658 LAS → FLL Jul 14, 14:09 UTCJul 15, 13:00 UTC22h 51m
2026-07-14 JBU1511 JFK → LAS Jul 14, 02:15 UTCJul 14, 06:45 UTC4h 30m
2026-07-14 JBU1511 JFK → LAS Jul 14, 02:14 UTCJul 15, 01:00 UTC22h 46m
2026-07-13 JBU190 - Jul 13, 19:05 UTCJul 14, 00:20 UTC5h 15m
2026-07-13 JBU189 JFK → SAN Jul 13, 12:00 UTCJul 13, 16:45 UTC4h 45m
2026-07-12 JBU948 LAS → JFK Jul 12, 07:10 UTCJul 12, 11:45 UTC4h 35m
2026-07-12 JBU777 BOS → LAS Jul 12, 00:40 UTCJul 12, 05:35 UTC4h 55m
2026-07-11 JBU1200 MCO → FLL Jul 11, 06:35 UTCJul 12, 05:01 UTC22h 26m
2026-07-10 JBU1487 BOS → LAX Jul 10, 15:13 UTCJul 11, 15:00 UTC23h 48m
2026-07-10 JBU1487 BOS → LAX Jul 10, 15:15 UTCJul 10, 20:50 UTC5h 35m
2026-07-10 JBU778 - Jul 10, 04:55 UTCJul 10, 09:40 UTC4h 45m
2026-07-09 JBU1211 JFK → LAS Jul 9, 22:20 UTCJul 10, 03:30 UTC5h 10m
2026-07-09 JBU2348 LAS → JFK Jul 9, 14:35 UTCJul 9, 19:05 UTC4h 30m
2026-07-09 JBU1511 - Jul 9, 02:40 UTCJul 9, 07:25 UTC4h 45m
2026-07-08 JBU16 - Jul 8, 16:50 UTCJul 8, 21:50 UTC5h 0m
2026-07-07 JBU415 JFK → SFO Jul 7, 21:51 UTCJul 8, 21:00 UTC23h 10m

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 N991JT page for operator, model, and routing details .

Mode-S ADD734 frequently asked

What is Mode-S code ADD734?
ADD734 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N991JT.
Where is Mode-S ADD734 registered?
Mode-S code ADD734 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 ADD734 broadcasting right now?
Mode-S ADD734 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADD734, octal 53353464, decimal 11,392,820.
What flights does ADD734 operate?
Mode-S ADD734 has broadcast 20 distinct callsigns, including JBU920, JBU687, JBU434, JBU733, JBU619.