Apparatus

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sensors Mode-S transponder

AB5748

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N83PB · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC DBA, CAPE AIR

Hex
AB5748
Octal
52653510
Decimal
11,229,000
Country
US
Tail
N83PB
Type
C402
No current signal · last broadcast 1d ago
Flights observed
92
Distinct callsigns
16
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AB5748.

Country allocation

The ICAO 24-bit address AB5748 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 16 distinct

Callsign Airline Flights Last seen
KAP98 Cape Air 16 2026-05-07
KAP87 Cape Air 12 2026-04-25
KAP627 Cape Air 10 2026-04-30
KAP47 Cape Air 10 2026-05-24
KAP161 Cape Air 8 2026-05-24
KAP131 Cape Air 7 2026-05-06
KAP278 Cape Air 6 2026-05-23
KAP189 Cape Air 5 2026-05-16
KAP876 Cape Air 4 2026-05-05
KAP635 Cape Air 3 2026-05-24
KAP157 - 3 2026-04-22
KAP91 Cape Air 2 2026-04-22
KAP211 Cape Air 2 2026-05-25
KAP2 Cape Air 2 2026-05-25
KAP30 Cape Air 1 2026-05-14
KAP1903 Cape Air 1 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 KAP1903 SJU → STT May 28, 15:35 UTCMay 28, 15:55 UTC20m
2026-05-25 KAP2 MVY → BOS May 25, 21:49 UTCMay 25, 22:00 UTC10m
2026-05-25 KAP2 MVY → BOS May 25, 18:55 UTCMay 25, 19:10 UTC15m
2026-05-25 KAP211 BOS → ISP May 25, 14:05 UTCMay 25, 14:15 UTC10m
2026-05-25 KAP211 BOS → ISP May 25, 12:50 UTCMay 25, 13:05 UTC15m
2026-05-24 KAP47 STT → SJU May 24, 20:25 UTCMay 24, 20:35 UTC10m
2026-05-24 KAP161 VQS → SJU May 24, 17:30 UTCMay 24, 17:50 UTC20m
2026-05-24 KAP161 VQS → SJU May 24, 16:45 UTCMay 24, 16:55 UTC10m
2026-05-24 KAP161 VQS → SJU May 24, 15:45 UTCMay 24, 16:00 UTC15m
2026-05-24 KAP161 VQS → SJU May 24, 14:45 UTCMay 24, 14:55 UTC10m
2026-05-24 KAP635 STT → SJU May 24, 13:05 UTCMay 24, 13:20 UTC15m
2026-05-23 KAP278 VQS → SJU May 23, 20:45 UTCMay 23, 21:00 UTC15m
2026-05-16 KAP189 SJU → STT May 16, 18:05 UTCMay 16, 18:15 UTC10m
2026-05-16 KAP189 SJU → STT May 16, 16:00 UTCMay 16, 16:15 UTC15m
2026-05-15 KAP189 SJU → STT May 15, 13:00 UTCMay 15, 13:20 UTC20m
2026-05-14 KAP30 STT → SJU May 14, 15:45 UTCMay 14, 15:55 UTC10m
2026-05-13 KAP161 VQS → SJU May 13, 15:05 UTCMay 13, 15:25 UTC20m
2026-05-12 KAP47 STT → SJU May 12, 23:35 UTCMay 12, 23:45 UTC10m
2026-05-12 KAP47 STT → SJU May 12, 22:15 UTCMay 12, 22:25 UTC10m
2026-05-12 KAP47 STT → SJU May 12, 20:25 UTCMay 12, 20:40 UTC15m
2026-05-07 KAP98 STX → SJU May 7, 18:30 UTCMay 7, 18:45 UTC15m
2026-05-07 KAP98 STX → SJU May 7, 15:45 UTCMay 7, 16:00 UTC15m
2026-05-07 KAP98 STX → SJU May 7, 14:40 UTCMay 7, 15:05 UTC25m
2026-05-07 KAP98 STX → SJU May 7, 13:25 UTCMay 7, 13:45 UTC20m
2026-05-06 KAP131 STX → SJU May 6, 20:55 UTCMay 6, 21:10 UTC15m
2026-05-06 KAP131 STX → SJU May 6, 20:00 UTCMay 6, 20:15 UTC15m
2026-05-06 KAP131 STX → SJU May 6, 18:05 UTCMay 6, 18:20 UTC15m
2026-05-06 KAP131 STX → SJU May 6, 16:40 UTCMay 6, 17:05 UTC25m
2026-05-06 KAP131 STX → SJU May 6, 14:50 UTCMay 6, 15:05 UTC15m
2026-05-06 KAP131 STX → SJU May 6, 13:10 UTCMay 6, 13:25 UTC15m
2026-05-05 KAP876 SJU → STX May 5, 21:25 UTCMay 5, 21:35 UTC10m
2026-05-05 KAP876 SJU → STX May 5, 20:25 UTCMay 5, 20:35 UTC10m
2026-05-05 KAP876 SJU → STX May 5, 16:10 UTCMay 5, 16:20 UTC10m
2026-05-05 KAP876 SJU → STX May 5, 13:30 UTCMay 5, 13:45 UTC15m
2026-05-03 KAP278 VQS → SJU May 3, 18:14 UTCMay 3, 18:34 UTC20m
2026-05-03 KAP278 VQS → SJU May 3, 16:30 UTCMay 3, 17:20 UTC50m
2026-05-03 KAP278 VQS → SJU May 3, 15:35 UTCMay 3, 15:55 UTC20m
2026-05-02 KAP98 STX → SJU May 2, 21:35 UTCMay 2, 21:50 UTC15m
2026-05-02 KAP98 STX → SJU May 2, 20:00 UTCMay 2, 20:10 UTC10m
2026-05-02 KAP98 STX → SJU May 2, 18:35 UTCMay 2, 18:45 UTC10m
2026-05-02 KAP98 STX → SJU May 2, 16:05 UTCMay 2, 16:35 UTC30m
2026-05-02 KAP98 STX → SJU May 2, 14:40 UTCMay 2, 14:50 UTC10m
2026-05-02 KAP98 STX → SJU May 2, 13:05 UTCMay 2, 13:20 UTC15m
2026-05-01 KAP98 STX → SJU May 1, 21:30 UTCMay 1, 21:55 UTC25m
2026-05-01 KAP98 STX → SJU May 1, 19:35 UTCMay 1, 19:50 UTC15m
2026-05-01 KAP98 STX → SJU May 1, 18:20 UTCMay 1, 18:35 UTC15m
2026-05-01 KAP98 STX → SJU May 1, 16:15 UTCMay 1, 16:30 UTC15m
2026-05-01 KAP98 STX → SJU May 1, 14:55 UTCMay 1, 15:10 UTC15m
2026-05-01 KAP98 STX → SJU May 1, 13:10 UTCMay 1, 13:20 UTC10m
2026-04-30 KAP627 SLK → BOS Apr 30, 21:25 UTCApr 30, 21:35 UTC10m

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 N83PB page for operator, model, and routing details .

Mode-S AB5748 frequently asked

What is Mode-S code AB5748?
AB5748 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N83PB.
Where is Mode-S AB5748 registered?
Mode-S code AB5748 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 AB5748 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 AB5748, octal 52653510, decimal 11,229,000.
What flights does AB5748 operate?
Mode-S AB5748 has broadcast 16 distinct callsigns, including KAP98, KAP87, KAP627, KAP47, KAP161.