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 3h ago
Flights observed
157
Distinct callsigns
20
Country
US
Last broadcast
3h 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JBU613 HPN → FLL May 29, 23:35 UTCMay 30, 02:00 UTC2h 25m
2026-05-29 JBU1168 PBI → HPN May 29, 19:15 UTCMay 29, 22:05 UTC2h 50m
2026-05-29 JBU2143 JFK → LGW May 29, 15:10 UTCMay 29, 17:30 UTC2h 20m
2026-05-28 JBU873 BOS → AUA May 28, 22:24 UTCMay 29, 21:15 UTC22h 52m
2026-05-28 JBU1230 CUN → EWR May 28, 16:47 UTCMay 29, 15:15 UTC22h 28m
2026-05-28 JBU1229 EWR → CUN May 28, 11:25 UTCMay 29, 11:15 UTC23h 50m
2026-05-28 JBU1229 EWR → CUN May 28, 11:30 UTCMay 28, 15:00 UTC3h 30m
2026-05-28 JBU2128 MCO → EWR May 28, 02:15 UTCMay 28, 04:20 UTC2h 5m
2026-05-27 JBU2077 LGA → FLL May 27, 17:25 UTCMay 27, 23:30 UTC6h 5m
2026-05-27 JBU1205 JFK → ORD May 27, 02:09 UTCMay 27, 14:55 UTC12h 45m
2026-05-26 JBU2078 PUJ → MCO May 26, 17:25 UTCMay 26, 23:35 UTC6h 10m
2026-05-26 JBU2548 FLL → MCO May 26, 14:55 UTCMay 26, 15:29 UTC35m
2026-05-26 JBU1601 JFK → FLL May 26, 10:34 UTCMay 26, 13:04 UTC2h 30m
2026-05-25 JBU164 SRQ → JFK May 25, 16:00 UTCMay 25, 18:30 UTC2h 30m
2026-05-25 JBU164 SRQ → JFK May 25, 16:00 UTCMay 26, 15:14 UTC23h 15m
2026-05-25 JBU163 JFK → SRQ May 25, 12:05 UTCMay 25, 14:30 UTC2h 25m
2026-05-24 JBU255 JFK → PLS May 24, 13:55 UTCMay 24, 14:30 UTC35m
2026-05-24 JBU255 JFK → PLS May 24, 13:55 UTCMay 25, 13:15 UTC23h 20m
2026-05-24 JBU676 BDL → JFK May 24, 11:20 UTCMay 24, 11:50 UTC30m
2026-05-23 JBU2890 SJU → EWR May 23, 12:35 UTCMay 24, 02:35 UTC14h 1m
2026-05-22 JBU547 EWR → PBI May 22, 18:45 UTCMay 22, 21:05 UTC2h 20m
2026-05-22 JBU547 EWR → PBI May 22, 18:43 UTCMay 23, 16:10 UTC21h 27m
2026-05-22 JBU546 MCO → ISP May 22, 15:05 UTCMay 22, 17:25 UTC2h 20m
2026-05-22 JBU1076 MCO → PVD May 22, 11:15 UTCMay 22, 13:40 UTC2h 25m
2026-05-21 JBU1144 MCO → EWR May 21, 15:18 UTCMay 22, 13:15 UTC21h 58m
2026-05-21 JBU819 JFK → SDQ May 21, 01:59 UTCMay 22, 01:15 UTC23h 17m
2026-05-20 JBU284 LGB → LAS May 20, 15:50 UTCMay 21, 15:15 UTC23h 26m
2026-05-20 JBU395 HPN → MCO May 20, 11:42 UTCMay 21, 11:15 UTC23h 34m
2026-05-19 JBU2602 JFK → BUF May 19, 20:57 UTCMay 20, 18:00 UTC21h 4m
2026-05-19 JBU1471 BOS → CUN May 19, 11:54 UTCMay 20, 00:30 UTC12h 36m
2026-05-18 JBU678 JAX → JFK May 18, 15:47 UTCMay 19, 14:25 UTC22h 38m
2026-05-17 JBU1052 MCO → BOS May 17, 20:58 UTCMay 18, 19:15 UTC22h 17m
2026-05-17 JBU1678 JAX → JFK May 17, 11:04 UTCMay 18, 03:40 UTC16h 37m
2026-05-16 JBU121 JFK → NAS May 16, 14:01 UTCMay 17, 13:01 UTC23h 0m
2026-05-16 JBU1678 JAX → JFK May 16, 10:31 UTCMay 16, 12:31 UTC2h 0m
2026-05-16 JBU1678 JAX → JFK May 16, 10:30 UTCMay 17, 00:40 UTC14h 11m
2026-05-15 JBU2377 JFK → JAX May 15, 23:00 UTCMay 16, 00:55 UTC1h 55m
2026-05-15 JBU2102 FLL → JFK May 15, 18:15 UTCMay 15, 20:40 UTC2h 25m
2026-05-15 JBU1739 SYR → FLL May 15, 14:00 UTCMay 15, 16:30 UTC2h 29m
2026-05-14 JBU560 PHL → BOS May 14, 21:15 UTCMay 15, 19:15 UTC22h 0m
2026-05-14 JBU87 ALB → FLL May 14, 13:32 UTCMay 15, 13:00 UTC23h 29m
2026-05-14 JBU1146 FLL → RIC May 14, 00:22 UTCMay 14, 23:15 UTC22h 54m
2026-05-13 JBU2760 SXM → FLL May 13, 19:19 UTCMay 14, 19:15 UTC23h 57m
2026-05-13 JBU2761 BOS → SJU May 13, 15:38 UTCMay 14, 15:15 UTC23h 38m
2026-05-13 JBU959 BDL → FLL May 13, 11:06 UTCMay 14, 02:15 UTC15h 10m
2026-05-13 JBU534 SFO → BOS May 13, 00:20 UTCMay 13, 22:30 UTC22h 11m
2026-05-12 JBU1752 MCO → BOS May 12, 20:16 UTCMay 13, 17:50 UTC21h 35m
2026-05-12 JBU2475 BDL → SJU May 12, 14:35 UTCMay 12, 15:10 UTC35m
2026-05-12 JBU2475 BDL → SJU May 12, 14:32 UTCMay 13, 13:15 UTC22h 44m
2026-05-12 JBU1476 SJU → BDL May 12, 12:35 UTCMay 12, 13:15 UTC40m

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 3h 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 JBU656, JBU655, JBU2013, JBU861, JBU768.