Apparatus

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sensors Mode-S transponder

A87C4F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N646JB · AIRBUS A-320 · operated by JETBLUE AIRWAYS CORP

Hex
A87C4F
Octal
52076117
Decimal
11,041,871
Country
US
Tail
N646JB
Type
A320
No current signal · last broadcast Jul 26, 20:30 UTC
Flights observed
304
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:30 UTC

Last known position

Most recent position reported by Mode-S A87C4F.

Country allocation

The ICAO 24-bit address A87C4F 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
JBU133 JetBlue Airways 5 2026-07-25
JBU88 - 4 2026-04-15
JBU87 JetBlue Airways 4 2026-04-15
JBU2153 JetBlue Airways 4 2026-06-14
JBU1471 JetBlue Airways 4 2026-06-05
JBU934 JetBlue Airways 3 2026-06-03
JBU869 JetBlue Airways 3 2026-05-06
JBU572 JetBlue Airways 3 2026-04-17
JBU503 JetBlue Airways 3 2026-04-30
JBU2895 JetBlue Airways 3 2026-07-26
JBU272 JetBlue Airways 3 2026-07-20
JBU2374 JetBlue Airways 3 2026-06-07
JBU2054 JetBlue Airways 3 2026-05-10
JBU1903 - 3 2026-06-16
JBU1743 - 3 2026-07-10
JBU1696 - 3 2026-07-01
JBU1230 JetBlue Airways 3 2026-05-16
JBU1197 - 3 2026-07-03
JBU1196 - 3 2026-07-02
JBU861 JetBlue Airways 2 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU2895 BOS → PUJ Jul 26, 10:20 UTCJul 26, 20:30 UTC10h 11m
2026-07-26 JBU2895 BOS → PUJ Jul 26, 10:20 UTCJul 26, 13:05 UTC2h 45m
2026-07-26 JBU462 SJU → BOS Jul 26, 00:45 UTCJul 26, 04:20 UTC3h 35m
2026-07-25 JBU2941 STX → SJU Jul 25, 22:45 UTCJul 25, 23:00 UTC15m
2026-07-25 JBU2031 BOS → LGA Jul 25, 20:25 UTCJul 25, 20:40 UTC15m
2026-07-25 JBU133 BOS → SFO Jul 25, 18:10 UTCJul 25, 18:30 UTC20m
2026-07-25 JBU133 BOS → SFO Jul 25, 15:55 UTCJul 25, 16:30 UTC35m
2026-07-25 JBU2695 HPN → MCO Jul 25, 11:40 UTCJul 25, 13:50 UTC2h 10m
2026-07-25 JBU368 PUJ → JFK Jul 25, 00:05 UTCJul 25, 02:40 UTC2h 35m
2026-07-24 JBU2087 LGA → BNA Jul 24, 19:35 UTCJul 24, 22:25 UTC2h 50m
2026-07-24 JBU388 LAX → BOS Jul 24, 15:35 UTCJul 24, 18:10 UTC2h 35m
2026-07-24 JBU1461 LGA → PBI Jul 24, 11:45 UTCJul 24, 14:10 UTC2h 25m
2026-07-23 JBU1172 SLC → JFK Jul 23, 22:55 UTCJul 24, 01:15 UTC2h 20m
2026-07-23 JBU2582 BNA → FLL Jul 23, 19:45 UTCJul 23, 21:35 UTC1h 50m
2026-07-23 JBU681 BOS → JFK Jul 23, 16:35 UTCJul 23, 18:25 UTC1h 50m
2026-07-23 JBU1145 RIC → FLL Jul 23, 13:00 UTCJul 23, 15:00 UTC2h 0m
2026-07-22 JBU725 JFK → SAT Jul 22, 15:05 UTCJul 22, 15:45 UTC40m
2026-07-22 JBU725 JFK → SAT Jul 22, 14:59 UTCJul 23, 13:45 UTC22h 46m
2026-07-22 JBU726 BWI → BOS Jul 22, 11:35 UTCJul 22, 13:10 UTC1h 35m
2026-07-21 JBU1612 JFK → SDQ Jul 21, 18:50 UTCJul 21, 21:30 UTC2h 40m
2026-07-21 JBU1611 JFK → LAS Jul 21, 14:50 UTCJul 21, 17:20 UTC2h 30m
2026-07-21 JBU1505 EWR → FLL Jul 21, 10:45 UTCJul 21, 13:05 UTC2h 20m
2026-07-21 JBU706 FLL → EWR Jul 21, 02:35 UTCJul 21, 05:05 UTC2h 30m
2026-07-20 JBU471 LGA → FLL Jul 20, 22:35 UTCJul 21, 01:05 UTC2h 29m
2026-07-20 JBU272 FLL → LGA Jul 20, 17:20 UTCJul 20, 20:00 UTC2h 40m
2026-07-20 JBU8417 BOS → JFK Jul 20, 08:55 UTCJul 20, 11:15 UTC2h 20m
2026-07-20 JBU1714 MCO → JFK Jul 20, 02:10 UTCJul 20, 02:30 UTC20m
2026-07-19 JBU1245 BOS → CLT Jul 19, 16:45 UTCJul 19, 18:35 UTC1h 50m
2026-07-19 JBU8346 FLL → RIC Jul 19, 13:50 UTCJul 19, 15:40 UTC1h 50m
2026-07-18 JBU2072 BQN → FLL Jul 18, 18:40 UTCJul 19, 17:45 UTC23h 6m
2026-07-18 JBU1989 FLL → SDQ Jul 18, 02:09 UTCJul 18, 03:40 UTC1h 31m
2026-07-18 JBU1989 FLL → SDQ Jul 18, 02:07 UTCJul 18, 20:55 UTC18h 49m
2026-07-16 JBU593 EWR → STI Jul 16, 16:12 UTCJul 16, 23:25 UTC7h 13m
2026-07-16 JBU2421 - Jul 16, 01:07 UTCJul 16, 23:25 UTC22h 18m
2026-07-16 JBU2421 - Jul 16, 01:10 UTCJul 16, 03:50 UTC2h 40m
2026-07-15 JBU1336 - Jul 15, 20:15 UTCJul 15, 21:40 UTC1h 25m
2026-07-15 JBU837 BOS → DTW Jul 15, 16:05 UTCJul 15, 17:40 UTC1h 35m
2026-07-15 JBU1160 PHL → BOS Jul 15, 13:40 UTCJul 15, 14:30 UTC50m
2026-07-15 JBU1159 BNH → PHL Jul 15, 11:05 UTCJul 15, 12:05 UTC1h 0m
2026-07-14 JBU2371 FLL → AUS Jul 14, 13:53 UTCJul 15, 11:45 UTC21h 52m
2026-07-14 JBU513 ISP → FLL Jul 14, 10:06 UTCJul 15, 04:00 UTC17h 54m
2026-07-14 JBU846 MCO → ISP Jul 14, 01:41 UTCJul 14, 23:45 UTC22h 4m
2026-07-14 JBU846 MCO → ISP Jul 14, 01:45 UTCJul 14, 03:50 UTC2h 5m
2026-07-13 JBU1043 - Jul 13, 23:10 UTCJul 13, 23:40 UTC30m
2026-07-13 JBU1043 - Jul 13, 18:45 UTCJul 13, 22:25 UTC3h 40m
2026-07-13 JBU1042 MCO → ROC Jul 13, 15:05 UTCJul 13, 17:25 UTC2h 20m
2026-07-13 JBU283 JFK → MCO Jul 13, 00:45 UTCJul 13, 02:55 UTC2h 10m
2026-07-12 JBU1084 MCO → JFK Jul 12, 20:35 UTCJul 12, 22:55 UTC2h 20m
2026-07-11 JBU1976 KIN → FLL Jul 11, 23:58 UTCJul 12, 22:55 UTC22h 58m
2026-07-11 JBU1976 - Jul 11, 20:50 UTCJul 12, 01:30 UTC4h 40m

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 N646JB page for operator, model, and routing details .

Mode-S A87C4F frequently asked

What is Mode-S code A87C4F?
A87C4F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N646JB.
Where is Mode-S A87C4F registered?
Mode-S code A87C4F 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 A87C4F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A87C4F, octal 52076117, decimal 11,041,871.
What flights does A87C4F operate?
Mode-S A87C4F has broadcast 20 distinct callsigns, including JBU133, JBU88, JBU87, JBU2153, JBU1471.