Apparatus

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sensors Mode-S transponder

AB742E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N837US · MCDONNELL-DOUGLAS MD-88 · operated by USA JET AIRLINES INC

Hex
AB742E
Octal
52672056
Decimal
11,236,398
Country
US
Tail
N837US
Type
MD88
No current signal · last broadcast 1d ago
Flights observed
92
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AB742E.

Country allocation

The ICAO 24-bit address AB742E 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
JUS227 - 8 2026-06-23
JUS501 USA Jet Airlines 6 2026-07-02
JUS210 USA Jet Airlines 6 2026-06-01
JUS750 - 5 2026-06-28
JUS627 USA Jet Airlines 5 2026-05-22
JUS258 USA Jet Airlines 5 2026-06-09
JUS356 USA Jet Airlines 4 2026-06-24
JUS301 USA Jet Airlines 4 2026-07-01
JUS743 - 3 2026-06-28
JUS705 USA Jet Airlines 3 2026-07-19
JUS658 - 3 2026-06-20
JUS532 USA Jet Airlines 3 2026-06-11
JUS472 - 3 2026-06-25
JUS465 USA Jet Airlines 3 2026-05-14
JUS434 USA Jet Airlines 3 2026-04-30
JUS325 - 3 2026-07-15
JUS767 - 2 2026-06-27
JUS712 USA Jet Airlines 2 2026-06-21
JUS634 USA Jet Airlines 2 2026-05-02
JUS610 - 2 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 JUS705 LRD → YIP Jul 19, 12:40 UTCJul 19, 13:35 UTC55m
2026-07-19 JUS705 LRD → YIP Jul 19, 07:50 UTCJul 19, 11:05 UTC3h 15m
2026-07-18 JUS705 LRD → YIP Jul 18, 22:05 UTCJul 19, 04:45 UTC6h 40m
2026-07-15 JUS325 - Jul 15, 02:15 UTCJul 15, 04:20 UTC2h 5m
2026-07-14 JUS325 - Jul 14, 22:55 UTCJul 14, 23:20 UTC25m
2026-07-02 JUS501 PSM → LRD Jul 2, 21:40 UTCJul 2, 22:30 UTC50m
2026-07-02 JUS501 PSM → LRD Jul 2, 18:55 UTCJul 2, 20:50 UTC1h 55m
2026-07-02 JUS501 PSM → LRD Jul 2, 15:45 UTCJul 2, 16:30 UTC45m
2026-07-01 JUS301 GDL → YIP Jul 1, 01:15 UTCJul 1, 02:15 UTC1h 0m
2026-06-30 JUS318 - Jun 30, 23:00 UTCJul 1, 00:00 UTC1h 0m
2026-06-30 JUS301 GDL → YIP Jun 30, 16:50 UTCJun 30, 22:20 UTC5h 30m
2026-06-28 JUS750 - Jun 28, 14:59 UTCJun 28, 15:55 UTC55m
2026-06-28 JUS750 LRD → AFW Jun 28, 11:45 UTCJun 28, 12:44 UTC1h 0m
2026-06-28 JUS743 LRD → LRD Jun 28, 05:24 UTCJun 28, 10:19 UTC4h 55m
2026-06-27 JUS767 - Jun 27, 06:50 UTCJun 27, 09:19 UTC2h 30m
2026-06-27 JUS767 - Jun 27, 03:40 UTCJun 27, 04:24 UTC45m
2026-06-25 JUS472 - Jun 25, 16:59 UTCJun 25, 19:05 UTC2h 5m
2026-06-25 JUS472 LRD → AFW Jun 25, 14:09 UTCJun 25, 15:15 UTC1h 5m
2026-06-25 JUS472 LRD → LRD Jun 25, 08:04 UTCJun 25, 13:09 UTC5h 5m
2026-06-24 JUS356 MCI → YIP Jun 24, 05:09 UTCJun 24, 07:44 UTC2h 35m
2026-06-24 JUS356 MCI → YIP Jun 24, 03:00 UTCJun 24, 04:00 UTC1h 0m
2026-06-23 JUS227 - Jun 23, 13:09 UTCJun 23, 13:29 UTC20m
2026-06-23 JUS227 - Jun 23, 08:00 UTCJun 23, 10:24 UTC2h 25m
2026-06-23 JUS227 LRD → LRD Jun 23, 00:30 UTCJun 23, 06:59 UTC6h 30m
2026-06-22 JUS118 LRD → YIP Jun 22, 06:10 UTCJun 22, 08:35 UTC2h 25m
2026-06-22 JUS118 LRD → YIP Jun 22, 01:55 UTCJun 22, 04:19 UTC2h 25m
2026-06-21 JUS712 QRO → YQG Jun 21, 03:00 UTCJun 21, 05:59 UTC3h 0m
2026-06-21 JUS712 QRO → YQG Jun 21, 00:10 UTCJun 21, 01:14 UTC1h 5m
2026-06-20 JUS658 - Jun 20, 07:09 UTCJun 20, 07:44 UTC35m
2026-06-20 JUS658 - Jun 20, 03:09 UTCJun 20, 05:39 UTC2h 30m
2026-06-19 JUS658 - Jun 19, 23:54 UTCJun 20, 00:59 UTC1h 5m
2026-06-19 JUS641 YIP → EVV Jun 19, 19:49 UTCJun 19, 20:19 UTC30m
2026-06-17 JUS427 LRD → LRD Jun 17, 14:45 UTCJun 17, 18:50 UTC4h 5m
2026-06-17 JUS427 - Jun 17, 08:25 UTCJun 17, 11:25 UTC3h 0m
2026-06-16 JUS301 GDL → YIP Jun 16, 07:45 UTCJun 16, 08:55 UTC1h 10m
2026-06-16 JUS301 GDL → YIP Jun 16, 04:00 UTCJun 16, 05:59 UTC2h 0m
2026-06-14 JUS743 - Jun 14, 22:20 UTCJun 14, 23:20 UTC1h 0m
2026-06-14 JUS743 - Jun 14, 19:40 UTCJun 14, 20:40 UTC1h 0m
2026-06-13 JUS750 STL → LRD Jun 13, 08:00 UTCJun 13, 10:10 UTC2h 10m
2026-06-13 JUS750 - Jun 13, 06:05 UTCJun 13, 06:55 UTC50m
2026-06-13 JUS750 - Jun 13, 03:25 UTCJun 13, 03:40 UTC15m
2026-06-12 JUS610 LRD → YIP Jun 12, 17:45 UTCJun 12, 20:45 UTC3h 0m
2026-06-12 JUS610 - Jun 12, 12:20 UTCJun 12, 15:35 UTC3h 15m
2026-06-11 JUS532 SLW → LRD Jun 11, 12:05 UTCJun 11, 13:25 UTC1h 20m
2026-06-11 JUS532 SLW → LRD Jun 11, 08:30 UTCJun 11, 11:00 UTC2h 30m
2026-06-11 JUS532 SLW → LRD Jun 11, 02:30 UTCJun 11, 03:30 UTC1h 0m
2026-06-09 JUS258 YIP → LRD Jun 9, 09:30 UTCJun 9, 10:40 UTC1h 10m
2026-06-09 JUS258 YIP → LRD Jun 9, 05:50 UTCJun 9, 07:40 UTC1h 50m
2026-06-09 JUS258 YIP → LRD Jun 9, 00:25 UTCJun 9, 03:35 UTC3h 10m
2026-06-05 JUS570 YIP → LRD Jun 5, 03:20 UTCJun 5, 06:05 UTC2h 45m

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 N837US page for operator, model, and routing details .

Mode-S AB742E frequently asked

What is Mode-S code AB742E?
AB742E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N837US.
Where is Mode-S AB742E registered?
Mode-S code AB742E 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 AB742E broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB742E, octal 52672056, decimal 11,236,398.
What flights does AB742E operate?
Mode-S AB742E has broadcast 20 distinct callsigns, including JUS227, JUS501, JUS210, JUS750, JUS627.