Apparatus

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sensors Mode-S transponder

ADF128

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N998JE · AIRBUS A-321 · operated by JETBLUE AIRWAYS CORP

Hex
ADF128
Octal
53370450
Decimal
11,399,464
Country
US
Tail
N998JE
Type
A321
Broadcasting now · callsign JBU454 · 33,025 ft
Flights observed
270
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Current position

ADF128 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ADF128 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
JBU574 JetBlue Airways 11 2026-07-26
JBU474 JetBlue Airways 8 2026-07-24
JBU454 - 6 2026-06-20
JBU2173 JetBlue Airways 6 2026-07-26
JBU922 - 5 2026-07-13
JBU9 - 5 2026-07-12
JBU373 - 5 2026-07-24
JBU151 - 5 2026-07-11
JBU1348 - 5 2026-07-16
JBU1347 - 5 2026-07-17
JBU774 JetBlue Airways 4 2026-04-17
JBU651 JetBlue Airways 4 2026-05-13
JBU57 - 4 2026-07-18
JBU2829 JetBlue Airways 4 2026-07-23
JBU803 - 3 2026-06-25
JBU771 JetBlue Airways 3 2026-05-07
JBU73 JetBlue Airways 3 2026-04-17
JBU710 - 3 2026-07-15
JBU355 - 3 2026-06-20
JBU322 JetBlue Airways 3 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JBU574 GND → BOS Jul 26, 17:10 UTCJul 26, 21:45 UTC4h 35m
2026-07-26 JBU2173 BOS → AUA Jul 26, 15:20 UTCJul 26, 15:35 UTC15m
2026-07-26 JBU2173 BOS → AUA Jul 26, 11:15 UTCJul 26, 14:40 UTC3h 25m
2026-07-25 JBU398 SEA → BOS Jul 25, 21:50 UTCJul 26, 02:20 UTC4h 30m
2026-07-25 JBU397 BOS → ATL Jul 25, 13:30 UTCJul 25, 19:15 UTC5h 45m
2026-07-24 JBU474 LAX → BOS Jul 24, 21:35 UTCJul 25, 01:10 UTC3h 35m
2026-07-24 JBU474 LAX → BOS Jul 24, 20:45 UTCJul 24, 21:00 UTC15m
2026-07-24 JBU474 LAX → BOS Jul 24, 20:40 UTCJul 25, 20:00 UTC23h 20m
2026-07-24 JBU373 - Jul 24, 14:50 UTCJul 24, 19:20 UTC4h 30m
2026-07-24 JBU474 LAX → BOS Jul 24, 02:20 UTCJul 24, 03:25 UTC1h 5m
2026-07-23 JBU2829 JFK → RSW Jul 23, 04:20 UTCJul 24, 03:30 UTC23h 10m
2026-07-22 JBU574 - Jul 22, 18:25 UTCJul 22, 22:05 UTC3h 40m
2026-07-22 JBU574 - Jul 22, 17:25 UTCJul 22, 17:45 UTC20m
2026-07-22 JBU574 AUA → BOS Jul 22, 17:24 UTCJul 23, 15:05 UTC21h 41m
2026-07-22 JBU2173 BOS → AUA Jul 22, 11:25 UTCJul 22, 16:00 UTC4h 35m
2026-07-21 JBU396 PUJ → BOS Jul 21, 23:50 UTCJul 22, 04:25 UTC4h 35m
2026-07-21 JBU395 HPN → MCO Jul 21, 16:35 UTCJul 21, 22:30 UTC5h 55m
2026-07-20 JBU1830 SDQ → BOS Jul 20, 09:18 UTCJul 21, 04:05 UTC18h 47m
2026-07-20 JBU1830 BOS → BOS Jul 20, 02:20 UTCJul 20, 13:10 UTC10h 50m
2026-07-19 JBU574 - Jul 19, 22:10 UTCJul 19, 23:20 UTC1h 10m
2026-07-19 JBU574 - Jul 19, 19:05 UTCJul 19, 19:15 UTC10m
2026-07-18 JBU57 - Jul 18, 17:35 UTCJul 18, 17:50 UTC15m
2026-07-18 JBU57 - Jul 18, 13:40 UTCJul 18, 16:50 UTC3h 10m
2026-07-18 JBU162 SMF → JFK Jul 18, 06:20 UTCJul 18, 11:20 UTC5h 0m
2026-07-17 JBU1347 DCA → SJU Jul 17, 12:49 UTCJul 18, 11:30 UTC22h 42m
2026-07-16 JBU1348 SJU → DCA Jul 16, 21:48 UTCJul 17, 17:44 UTC19h 57m
2026-07-16 JBU1348 JFK → DCA Jul 16, 14:20 UTCJul 17, 01:20 UTC11h 0m
2026-07-16 JBU264 SEA → JFK Jul 16, 06:05 UTCJul 16, 10:45 UTC4h 40m
2026-07-15 JBU263 JFK → SEA Jul 15, 22:40 UTCJul 16, 04:10 UTC5h 30m
2026-07-15 JBU710 JFK → JFK Jul 15, 10:55 UTCJul 15, 19:50 UTC8h 55m
2026-07-14 JBU859 - Jul 14, 20:15 UTCJul 15, 04:50 UTC8h 34m
2026-07-14 JBU1436 JFK → JFK Jul 14, 09:15 UTCJul 14, 17:45 UTC8h 30m
2026-07-13 JBU922 - Jul 13, 21:50 UTCJul 13, 23:45 UTC1h 55m
2026-07-13 JBU922 NAS → JFK Jul 13, 21:23 UTCJul 14, 20:00 UTC22h 38m
2026-07-13 JBU921 - Jul 13, 17:15 UTCJul 13, 19:20 UTC2h 5m
2026-07-12 JBU9 JFK → JFK Jul 12, 22:05 UTCJul 13, 14:55 UTC16h 50m
2026-07-12 JBU407 - Jul 12, 18:35 UTCJul 12, 19:20 UTC45m
2026-07-12 JBU508 - Jul 12, 15:50 UTCJul 12, 16:40 UTC50m
2026-07-11 JBU151 JFK → CUN Jul 11, 13:25 UTCJul 12, 02:25 UTC13h 1m
2026-07-11 JBU151 JFK → CUN Jul 11, 13:25 UTCJul 11, 16:50 UTC3h 25m
2026-07-09 JBU9 JFK → SDQ Jul 9, 22:31 UTCJul 10, 14:50 UTC16h 20m
2026-07-09 JBU602 FLL → JFK Jul 9, 17:43 UTCJul 10, 14:50 UTC21h 8m
2026-07-09 JBU1601 JFK → FLL Jul 9, 11:20 UTCJul 9, 13:50 UTC2h 30m
2026-07-09 JBU1601 JFK → FLL Jul 9, 11:18 UTCJul 9, 23:10 UTC11h 52m
2026-07-08 JBU2023 - Jul 8, 17:45 UTCJul 9, 02:35 UTC8h 50m
2026-07-08 JBU2829 BOS → SDQ Jul 8, 03:31 UTCJul 9, 02:00 UTC22h 30m
2026-07-08 JBU2829 - Jul 8, 03:35 UTCJul 8, 04:05 UTC30m
2026-07-07 JBU574 - Jul 7, 21:45 UTCJul 7, 22:40 UTC55m
2026-07-07 JBU574 - Jul 7, 18:30 UTCJul 7, 18:45 UTC15m
2026-07-07 JBU2173 BOS → AUA Jul 7, 12:20 UTCJul 7, 16:55 UTC4h 35m

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 N998JE page for operator, model, and routing details .

Mode-S ADF128 frequently asked

What is Mode-S code ADF128?
ADF128 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N998JE.
Where is Mode-S ADF128 registered?
Mode-S code ADF128 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 ADF128 broadcasting right now?
Yes. Mode-S ADF128 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADF128, octal 53370450, decimal 11,399,464.
What flights does ADF128 operate?
Mode-S ADF128 has broadcast 20 distinct callsigns, including JBU574, JBU474, JBU454, JBU2173, JBU922.