Apparatus

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sensors Mode-S transponder

A38B61

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3275J · operated by JETBLUE AIRWAYS CORP

Hex
A38B61
Octal
50705541
Decimal
10,718,049
Country
US
Tail
N3275J
Type
BCS3
No current signal · last broadcast Jul 26, 22:05 UTC
Flights observed
343
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:05 UTC

Last known position

Most recent position reported by Mode-S A38B61.

Country allocation

The ICAO 24-bit address A38B61 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
JBU2272 JetBlue Airways 7 2026-06-08
JBU2271 JetBlue Airways 6 2026-06-08
JBU494 - 5 2026-07-07
JBU2229 JetBlue Airways 5 2026-07-20
JBU2185 - 5 2026-07-15
JBU2065 - 5 2026-07-01
JBU1450 JetBlue Airways 4 2026-06-06
JBU1337 JetBlue Airways 4 2026-07-24
JBU845 - 3 2026-07-05
JBU392 JetBlue Airways 3 2026-06-01
JBU302 JetBlue Airways 3 2026-05-30
JBU2917 JetBlue Airways 3 2026-05-26
JBU2783 - 3 2026-06-20
JBU2754 - 3 2026-06-20
JBU2626 JetBlue Airways 3 2026-05-18
JBU2448 JetBlue Airways 3 2026-04-27
JBU2186 - 3 2026-07-01
JBU2119 JetBlue Airways 3 2026-05-17
JBU2072 JetBlue Airways 3 2026-04-26
JBU2071 JetBlue Airways 3 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU2024 MCO → DCA Jul 26, 13:00 UTCJul 26, 14:15 UTC1h 15m
2026-07-26 JBU2024 MCO → DCA Jul 26, 13:00 UTCJul 26, 22:05 UTC9h 6m
2026-07-26 JBU2876 MCO → PVD Jul 26, 00:05 UTCJul 26, 02:30 UTC2h 25m
2026-07-25 JBU2875 PVD → MCO Jul 25, 20:45 UTCJul 25, 23:00 UTC2h 15m
2026-07-25 JBU560 PHL → BOS Jul 25, 01:19 UTCJul 26, 00:15 UTC22h 56m
2026-07-24 JBU1807 BOS → BNA Jul 24, 15:12 UTCJul 25, 14:15 UTC23h 3m
2026-07-24 JBU1337 BOS → DTW Jul 24, 01:06 UTCJul 24, 23:45 UTC22h 39m
2026-07-23 JBU831 BOS → LGA Jul 23, 16:24 UTCJul 24, 16:15 UTC23h 51m
2026-07-23 JBU2352 MCO → BOS Jul 23, 14:44 UTCJul 24, 13:50 UTC23h 6m
2026-07-22 JBU2467 BOS → CHS Jul 22, 18:29 UTCJul 23, 17:35 UTC23h 6m
2026-07-22 JBU1310 - Jul 22, 15:05 UTCJul 22, 17:10 UTC2h 5m
2026-07-22 JBU1310 JAX → BOS Jul 22, 15:00 UTCJul 23, 14:05 UTC23h 5m
2026-07-22 JBU109 BOS → JAX Jul 22, 11:30 UTCJul 22, 13:50 UTC2h 20m
2026-07-21 JBU2601 BUF → JFK Jul 21, 12:13 UTCJul 22, 04:55 UTC16h 42m
2026-07-20 JBU2494 DCA → ACK Jul 20, 22:02 UTCJul 21, 16:05 UTC18h 3m
2026-07-20 JBU855 JFK → PLS Jul 20, 19:20 UTCJul 21, 16:05 UTC20h 45m
2026-07-20 JBU2229 BOS → MKE Jul 20, 11:27 UTCJul 21, 01:00 UTC13h 33m
2026-07-20 JBU1500 BOS → MKE Jul 20, 11:30 UTCJul 20, 13:35 UTC2h 5m
2026-07-19 JBU1500 - Jul 19, 20:55 UTCJul 19, 23:45 UTC2h 50m
2026-07-19 JBU1499 - Jul 19, 17:25 UTCJul 19, 20:00 UTC2h 35m
2026-07-18 JBU2285 JFK → RDU Jul 18, 23:20 UTCJul 19, 01:15 UTC1h 55m
2026-07-18 JBU2285 JFK → RDU Jul 18, 23:19 UTCJul 19, 22:15 UTC22h 57m
2026-07-18 JBU2012 - Jul 18, 15:15 UTCJul 18, 17:35 UTC2h 20m
2026-07-18 JBU2011 - Jul 18, 11:40 UTCJul 18, 14:00 UTC2h 20m
2026-07-18 JBU98 - Jul 18, 06:00 UTCJul 18, 09:15 UTC3h 15m
2026-07-17 JBU249 SAV → BOS Jul 17, 11:41 UTCJul 18, 10:15 UTC22h 35m
2026-07-17 JBU249 SAV → BOS Jul 17, 11:45 UTCJul 17, 13:45 UTC2h 0m
2026-07-16 JBU638 MIA → BOS Jul 16, 23:55 UTCJul 17, 03:39 UTC3h 45m
2026-07-16 JBU639 BOS → AUS Jul 16, 18:34 UTCJul 16, 22:19 UTC3h 45m
2026-07-16 JBU1310 - Jul 16, 14:50 UTCJul 16, 17:14 UTC2h 25m
2026-07-15 JBU2185 - Jul 15, 22:20 UTCJul 15, 23:40 UTC1h 20m
2026-07-15 JBU2185 BOS → PIT Jul 15, 22:18 UTCJul 16, 20:15 UTC21h 57m
2026-07-15 JBU1806 - Jul 15, 18:20 UTCJul 15, 20:35 UTC2h 15m
2026-07-15 JBU1807 - Jul 15, 14:45 UTCJul 15, 16:50 UTC2h 5m
2026-07-14 JBU2665 ACK → HPN Jul 14, 18:41 UTCJul 15, 16:55 UTC22h 14m
2026-07-14 JBU1352 - Jul 14, 17:30 UTCJul 14, 17:50 UTC20m
2026-07-14 JBU1352 BOS → ACK Jul 14, 17:29 UTCJul 15, 16:15 UTC22h 46m
2026-07-14 JBU1452 MCO → BOS Jul 14, 10:55 UTCJul 14, 13:35 UTC2h 40m
2026-07-13 JBU2493 ACK → DCA Jul 13, 15:22 UTCJul 14, 14:15 UTC22h 54m
2026-07-12 JBU2122 ACK → HPN Jul 12, 22:16 UTCJul 13, 20:15 UTC22h 0m
2026-07-12 JBU855 BOS → DCA Jul 12, 17:27 UTCJul 13, 16:15 UTC22h 49m
2026-07-12 JBU1324 BOS → MVY Jul 12, 13:30 UTCJul 12, 13:55 UTC25m
2026-07-12 JBU1324 BOS → MVY Jul 12, 13:30 UTCJul 12, 23:00 UTC9h 31m
2026-07-12 JBU2322 - Jul 12, 00:40 UTCJul 12, 03:10 UTC2h 30m
2026-07-11 JBU2321 - Jul 11, 20:40 UTCJul 11, 23:20 UTC2h 40m
2026-07-11 JBU266 RSW → BOS Jul 11, 16:30 UTCJul 11, 19:25 UTC2h 55m
2026-07-10 JBU1529 JFK → RSW Jul 10, 15:40 UTCJul 10, 18:10 UTC2h 30m
2026-07-10 JBU1529 JFK → RSW Jul 10, 15:38 UTCJul 10, 18:15 UTC2h 38m
2026-07-10 JBU8375 - Jul 10, 12:05 UTCJul 10, 12:45 UTC40m
2026-07-09 JBU1374 BNA → ALB Jul 9, 18:15 UTCJul 9, 21:15 UTC3h 0m

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 N3275J page for operator, model, and routing details .

Mode-S A38B61 frequently asked

What is Mode-S code A38B61?
A38B61 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3275J.
Where is Mode-S A38B61 registered?
Mode-S code A38B61 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 A38B61 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A38B61, octal 50705541, decimal 10,718,049.
What flights does A38B61 operate?
Mode-S A38B61 has broadcast 20 distinct callsigns, including JBU2272, JBU2271, JBU494, JBU2229, JBU2185.