Apparatus

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sensors Mode-S transponder

AC7B1B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N903JB · AIRBUS A-321 · operated by JETBLUE AIRWAYS CORP

Hex
AC7B1B
Octal
53075433
Decimal
11,303,707
Country
US
Tail
N903JB
Type
A321
No current signal · last broadcast Jul 26, 21:05 UTC
Flights observed
273
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:05 UTC

Last known position

Most recent position reported by Mode-S AC7B1B.

Country allocation

The ICAO 24-bit address AC7B1B 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
JBU2903 - 9 2026-07-17
JBU1348 - 7 2026-07-05
JBU2924 - 6 2026-07-12
JBU762 JetBlue Airways 5 2026-06-02
JBU2269 JetBlue Airways 5 2026-05-20
JBU2173 - 5 2026-07-13
JBU1347 - 5 2026-07-06
JBU904 - 4 2026-07-17
JBU862 JetBlue Airways 4 2026-04-30
JBU761 JetBlue Airways 4 2026-06-06
JBU602 - 4 2026-06-25
JBU466 JetBlue Airways 4 2026-05-20
JBU398 - 4 2026-07-03
JBU2904 - 4 2026-07-05
JBU1 JetBlue Airways 4 2026-05-16
JBU9999 - 3 2026-07-13
JBU898 JetBlue Airways 3 2026-04-18
JBU771 JetBlue Airways 3 2026-05-27
JBU765 - 3 2026-04-13
JBU662 JetBlue Airways 3 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU255 JFK → PLS Jul 26, 13:25 UTCJul 26, 21:05 UTC7h 40m
2026-07-25 JBU1669 BOS → FLL Jul 25, 16:04 UTCJul 26, 14:10 UTC22h 7m
2026-07-25 JBU536 LAX → SFO Jul 25, 10:40 UTCJul 26, 01:05 UTC14h 25m
2026-07-25 JBU1837 JFK → STI Jul 25, 01:09 UTCJul 26, 00:45 UTC23h 36m
2026-07-24 JBU152 RSW → JFK Jul 24, 18:47 UTCJul 25, 16:45 UTC21h 58m
2026-07-24 JBU151 JFK → TPA Jul 24, 13:48 UTCJul 25, 12:45 UTC22h 57m
2026-07-24 JBU1059 JFK → KIN Jul 24, 01:49 UTCJul 25, 00:45 UTC22h 56m
2026-07-24 JBU1059 JFK → KIN Jul 24, 01:50 UTCJul 24, 04:00 UTC2h 10m
2026-07-23 JBU255 JFK → PLS Jul 23, 14:10 UTCJul 23, 22:00 UTC7h 50m
2026-07-22 JBU662 BGI → JFK Jul 22, 19:35 UTCJul 22, 23:20 UTC3h 45m
2026-07-22 JBU662 BGI → JFK Jul 22, 18:40 UTCJul 22, 18:50 UTC10m
2026-07-22 JBU662 BGI → JFK Jul 22, 18:32 UTCJul 23, 16:20 UTC21h 48m
2026-07-20 JBU1501 JFK → FLL Jul 20, 23:46 UTCJul 21, 16:50 UTC17h 4m
2026-07-20 JBU1501 JFK → FLL Jul 20, 23:50 UTCJul 21, 02:45 UTC2h 55m
2026-07-20 JBU158 AUA → JFK Jul 20, 00:56 UTCJul 21, 00:45 UTC23h 49m
2026-07-19 JBU1457 - Jul 19, 19:20 UTCJul 19, 20:20 UTC1h 0m
2026-07-19 JBU1457 JFK → AUA Jul 19, 19:19 UTCJul 20, 12:10 UTC16h 52m
2026-07-18 JBU1058 AUA → JFK Jul 18, 17:19 UTCJul 19, 15:15 UTC21h 57m
2026-07-17 JBU18 POS → JFK Jul 17, 23:51 UTCJul 18, 22:10 UTC22h 20m
2026-07-17 JBU904 SJU → JFK Jul 17, 12:04 UTCJul 18, 04:30 UTC16h 27m
2026-07-17 JBU2903 - Jul 17, 01:59 UTCJul 17, 02:20 UTC20m
2026-07-16 JBU2903 - Jul 16, 23:10 UTCJul 16, 23:49 UTC40m
2026-07-16 JBU2903 JFK → SJU Jul 16, 23:09 UTCJul 17, 22:00 UTC22h 51m
2026-07-16 JBU1604 DCA → JFK Jul 16, 12:34 UTCJul 16, 20:49 UTC8h 15m
2026-07-15 JBU1603 JFK → SJU Jul 15, 12:39 UTCJul 16, 01:00 UTC12h 21m
2026-07-14 JBU922 NAS → JFK Jul 14, 21:24 UTCJul 15, 15:55 UTC18h 31m
2026-07-14 JBU2110 SDQ → JFK Jul 14, 11:42 UTCJul 15, 00:15 UTC12h 33m
2026-07-14 JBU2829 BOS → SDQ Jul 14, 00:36 UTCJul 14, 22:45 UTC22h 9m
2026-07-14 JBU2829 - Jul 14, 00:35 UTCJul 14, 01:10 UTC35m
2026-07-13 JBU574 - Jul 13, 20:25 UTCJul 13, 21:30 UTC1h 5m
2026-07-13 JBU574 - Jul 13, 17:15 UTCJul 13, 17:30 UTC15m
2026-07-13 JBU2173 - Jul 13, 15:15 UTCJul 13, 15:35 UTC20m
2026-07-13 JBU2173 - Jul 13, 12:10 UTCJul 13, 14:40 UTC2h 30m
2026-07-13 JBU2173 - Jul 13, 11:20 UTCJul 13, 12:05 UTC45m
2026-07-13 JBU9999 BOS → BOS Jul 13, 07:10 UTCJul 13, 07:25 UTC15m
2026-07-13 JBU9999 BOS → BOS Jul 13, 06:05 UTCJul 13, 06:10 UTC5m
2026-07-13 JBU9999 BOS → BOS Jul 13, 05:40 UTCJul 13, 05:45 UTC5m
2026-07-12 JBU2924 - Jul 12, 18:10 UTCJul 13, 02:15 UTC8h 5m
2026-07-12 JBU904 - Jul 12, 14:50 UTCJul 12, 15:50 UTC1h 0m
2026-07-12 JBU904 - Jul 12, 12:30 UTCJul 12, 12:40 UTC10m
2026-07-12 JBU2903 JFK → SJU Jul 12, 00:40 UTCJul 12, 03:55 UTC3h 15m
2026-07-11 JBU779 JFK → JFK Jul 11, 12:15 UTCJul 11, 20:35 UTC8h 20m
2026-07-10 JBU627 JFK → JFK Jul 10, 16:25 UTCJul 11, 00:20 UTC7h 56m
2026-07-10 JBU454 - Jul 10, 07:25 UTCJul 10, 12:10 UTC4h 45m
2026-07-09 JBU355 JFK → ONT Jul 9, 23:55 UTCJul 10, 05:40 UTC5h 45m
2026-07-09 JBU1858 - Jul 9, 18:30 UTCJul 9, 21:50 UTC3h 20m
2026-07-09 JBU1858 - Jul 9, 17:40 UTCJul 9, 17:55 UTC15m
2026-07-09 JBU757 - Jul 9, 15:25 UTCJul 9, 15:45 UTC20m
2026-07-08 JBU859 JFK → KIN Jul 8, 20:36 UTCJul 9, 18:30 UTC21h 54m
2026-07-08 JBU859 - Jul 8, 20:40 UTCJul 8, 23:00 UTC2h 20m

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 N903JB page for operator, model, and routing details .

Mode-S AC7B1B frequently asked

What is Mode-S code AC7B1B?
AC7B1B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N903JB.
Where is Mode-S AC7B1B registered?
Mode-S code AC7B1B 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 AC7B1B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC7B1B, octal 53075433, decimal 11,303,707.
What flights does AC7B1B operate?
Mode-S AC7B1B has broadcast 20 distinct callsigns, including JBU2903, JBU1348, JBU2924, JBU762, JBU2269.