Apparatus

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sensors Mode-S transponder

A9C5C5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N729JB · AIRBUS A-320 · operated by JETBLUE AIRWAYS CORP

Hex
A9C5C5
Octal
52342705
Decimal
11,126,213
Country
US
Tail
N729JB
Type
A320
No current signal · last broadcast 5h ago
Flights observed
312
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A9C5C5.

Country allocation

The ICAO 24-bit address A9C5C5 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
JBU768 - 6 2026-06-22
JBU656 JetBlue Airways 5 2026-05-01
JBU655 JetBlue Airways 5 2026-05-02
JBU2013 JetBlue Airways 5 2026-04-27
JBU861 JetBlue Airways 4 2026-04-23
JBU773 - 4 2026-06-28
JBU767 - 4 2026-06-22
JBU1434 JetBlue Airways 4 2026-06-18
JBU1433 JetBlue Airways 4 2026-06-18
JBU1229 JetBlue Airways 4 2026-06-24
JBU814 - 3 2026-06-27
JBU813 - 3 2026-07-03
JBU613 JetBlue Airways 3 2026-06-05
JBU465 JetBlue Airways 3 2026-05-07
JBU399 - 3 2026-07-10
JBU2404 JetBlue Airways 3 2026-04-26
JBU1678 JetBlue Airways 3 2026-05-17
JBU1476 JetBlue Airways 3 2026-05-12
JBU1344 JetBlue Airways 3 2026-04-18
JBU1251 JetBlue Airways 3 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JBU1775 FLL → KIN Jul 14, 03:05 UTCJul 14, 03:40 UTC36m
2026-07-13 JBU1976 KIN → FLL Jul 13, 23:42 UTCJul 14, 03:40 UTC3h 59m
2026-07-13 JBU1676 KIN → FLL Jul 13, 17:13 UTCJul 14, 03:40 UTC10h 28m
2026-07-13 JBU1676 - Jul 13, 14:25 UTCJul 13, 18:50 UTC4h 25m
2026-07-13 JBU1906 TPA → FLL Jul 13, 11:50 UTCJul 13, 12:25 UTC35m
2026-07-13 JBU1905 - Jul 13, 00:30 UTCJul 13, 01:15 UTC45m
2026-07-12 JBU864 - Jul 12, 20:40 UTCJul 12, 23:15 UTC2h 35m
2026-07-12 JBU1962 - Jul 12, 00:46 UTCJul 12, 23:15 UTC22h 30m
2026-07-11 JBU1053 - Jul 11, 21:01 UTCJul 12, 18:15 UTC21h 15m
2026-07-11 JBU460 FLL → BDL Jul 11, 03:54 UTCJul 12, 03:15 UTC23h 22m
2026-07-10 JBU399 LGA → MCO Jul 10, 20:12 UTCJul 11, 17:45 UTC21h 34m
2026-07-10 JBU399 LGA → MCO Jul 10, 20:15 UTCJul 10, 22:45 UTC2h 30m
2026-07-09 JBU1376 KIN → FLL Jul 9, 19:59 UTCJul 10, 19:15 UTC23h 16m
2026-07-09 JBU1376 - Jul 9, 17:15 UTCJul 9, 21:35 UTC4h 20m
2026-07-08 JBU357 FLL → ALB Jul 8, 21:50 UTCJul 9, 21:15 UTC23h 25m
2026-07-08 JBU2427 FLL → MBJ Jul 8, 16:17 UTCJul 9, 14:10 UTC21h 53m
2026-07-08 JBU1594 NAS → FLL Jul 8, 13:11 UTCJul 9, 11:15 UTC22h 5m
2026-07-07 JBU1975 - Jul 7, 21:25 UTCJul 8, 01:15 UTC3h 50m
2026-07-07 JBU1975 FLL → KIN Jul 7, 21:22 UTCJul 8, 20:30 UTC23h 9m
2026-07-07 JBU269 BOS → FLL Jul 7, 16:45 UTCJul 7, 19:30 UTC2h 45m
2026-07-06 JBU2087 PVD → PBI Jul 6, 22:25 UTCJul 7, 19:30 UTC21h 6m
2026-07-06 JBU388 LAX → BOS Jul 6, 18:33 UTCJul 7, 17:15 UTC22h 43m
2026-07-05 JBU2424 MCO → DCA Jul 5, 22:57 UTCJul 6, 21:10 UTC22h 13m
2026-07-05 JBU2424 MCO → DCA Jul 5, 23:00 UTCJul 6, 01:00 UTC2h 0m
2026-07-05 JBU1827 EWR → MCO Jul 5, 18:05 UTCJul 5, 20:10 UTC2h 5m
2026-07-05 JBU2028 MCO → EWR Jul 5, 14:05 UTCJul 5, 16:15 UTC2h 10m
2026-07-04 JBU1743 JAX → SJU Jul 4, 20:12 UTCJul 5, 19:15 UTC23h 3m
2026-07-04 JBU1089 EWR → SJU Jul 4, 11:20 UTCJul 5, 02:40 UTC15h 20m
2026-07-04 JBU706 FLL → EWR Jul 4, 02:14 UTCJul 5, 00:40 UTC22h 26m
2026-07-03 JBU1784 CTG → FLL Jul 3, 21:54 UTCJul 4, 19:05 UTC21h 11m
2026-07-03 JBU1783 - Jul 3, 18:25 UTCJul 4, 00:20 UTC5h 55m
2026-07-03 JBU813 - Jul 3, 16:30 UTCJul 3, 16:45 UTC15m
2026-07-03 JBU813 - Jul 3, 12:35 UTCJul 3, 15:10 UTC2h 35m
2026-07-03 JBU368 - Jul 3, 00:05 UTCJul 3, 02:30 UTC2h 25m
2026-07-02 JBU1761 - Jul 2, 20:30 UTCJul 2, 22:50 UTC2h 20m
2026-07-02 JBU698 MCO → LGA Jul 2, 16:20 UTCJul 2, 18:25 UTC2h 5m
2026-07-01 JBU1130 FLL → CHS Jul 1, 19:50 UTCJul 2, 18:30 UTC22h 40m
2026-07-01 JBU1494 NAS → FLL Jul 1, 17:48 UTCJul 2, 17:15 UTC23h 27m
2026-07-01 JBU1393 - Jul 1, 15:35 UTCJul 1, 15:55 UTC20m
2026-06-30 JBU87 FLL → ALB Jun 30, 19:37 UTCJul 1, 18:35 UTC22h 59m
2026-06-30 JBU2895 BOS → PUJ Jun 30, 10:24 UTCJul 1, 02:10 UTC15h 46m
2026-06-29 JBU1193 BOS → MBJ Jun 29, 15:43 UTCJun 30, 11:00 UTC19h 18m
2026-06-29 JBU1160 PHL → BOS Jun 29, 12:42 UTCJun 30, 11:00 UTC22h 19m
2026-06-29 JBU1159 BOS → PHL Jun 29, 10:24 UTCJun 29, 11:29 UTC1h 5m
2026-06-28 JBU773 BOS → AUA Jun 28, 15:52 UTCJun 29, 13:44 UTC21h 53m
2026-06-27 JBU1567 HPN → PBI Jun 27, 22:44 UTCJun 28, 20:04 UTC21h 21m
2026-06-27 JBU1168 PBI → HPN Jun 27, 18:54 UTCJun 28, 16:35 UTC21h 41m
2026-06-27 JBU814 - Jun 27, 11:25 UTCJun 27, 13:40 UTC2h 15m
2026-06-27 JBU814 - Jun 27, 11:04 UTCJun 27, 11:20 UTC15m
2026-06-27 JBU814 FLL → HPN Jun 27, 11:03 UTCJun 28, 01:25 UTC14h 22m

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 N729JB page for operator, model, and routing details .

Mode-S A9C5C5 frequently asked

What is Mode-S code A9C5C5?
A9C5C5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N729JB.
Where is Mode-S A9C5C5 registered?
Mode-S code A9C5C5 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 A9C5C5 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9C5C5, octal 52342705, decimal 11,126,213.
What flights does A9C5C5 operate?
Mode-S A9C5C5 has broadcast 20 distinct callsigns, including JBU768, JBU656, JBU655, JBU2013, JBU861.