Apparatus

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sensors Mode-S transponder

AC7A84

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N903CA · CESSNA 402 Businessliner · operated by HYANNIS AIR SERVICE INC DBA, CAPE AIR

Hex
AC7A84
Octal
53075204
Decimal
11,303,556
Country
US
Tail
N903CA
Type
C402
No current signal · last broadcast Jul 26, 20:45 UTC
Flights observed
375
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:45 UTC

Last known position

Most recent position reported by Mode-S AC7A84.

Country allocation

The ICAO 24-bit address AC7A84 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
KAP747 Cape Air 185 2026-07-26
KAP325 Cape Air 21 2026-06-01
KAP314 Cape Air 18 2026-06-02
KAP115 - 14 2026-06-28
KAP925 Cape Air 10 2026-07-26
KAP350 Cape Air 10 2026-06-20
KAP1271 - 7 2026-07-15
KAP627 Cape Air 6 2026-06-22
KAP501 Cape Air 6 2026-06-06
KAP1830 - 6 2026-06-28
KAP876 - 5 2026-07-13
KAP5573 - 5 2026-06-24
KAP10 Cape Air 5 2026-04-23
KAP616 Cape Air 4 2026-05-14
KAP548 Cape Air 4 2026-05-22
KAP42 Cape Air 4 2026-05-05
KAP186 - 4 2026-06-26
KAP635 - 3 2026-07-02
KAP5061 - 3 2026-07-13
KAP328 Cape Air 3 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAP747 ORD → MBL Jul 26, 20:20 UTCJul 26, 20:45 UTC25m
2026-07-26 KAP1876 LEB → BOS Jul 26, 18:45 UTCJul 26, 19:30 UTC45m
2026-07-26 KAP925 ACK → BOS Jul 26, 16:30 UTCJul 26, 17:05 UTC35m
2026-07-26 KAP747 ORD → MBL Jul 26, 15:15 UTCJul 26, 15:40 UTC25m
2026-07-26 KAP747 ORD → MBL Jul 26, 12:10 UTCJul 26, 12:25 UTC15m
2026-07-26 KAP747 ORD → MBL Jul 26, 11:10 UTCJul 26, 12:05 UTC55m
2026-07-25 KAP747 ORD → MBL Jul 25, 20:45 UTCJul 25, 21:45 UTC1h 0m
2026-07-25 KAP747 ORD → MBL Jul 25, 18:55 UTCJul 25, 19:25 UTC30m
2026-07-25 KAP747 ORD → MBL Jul 25, 17:00 UTCJul 25, 17:25 UTC25m
2026-07-25 KAP747 ORD → MBL Jul 25, 15:45 UTCJul 25, 16:15 UTC30m
2026-07-25 KAP747 ORD → MBL Jul 25, 13:50 UTCJul 25, 14:15 UTC25m
2026-07-25 KAP747 ORD → MBL Jul 25, 12:20 UTCJul 25, 12:50 UTC30m
2026-07-25 KAP747 ORD → MBL Jul 25, 11:25 UTCJul 25, 11:40 UTC15m
2026-07-24 KAP747 ORD → MBL Jul 24, 21:55 UTCJul 24, 22:05 UTC10m
2026-07-24 KAP747 ORD → MBL Jul 24, 20:35 UTCJul 24, 21:05 UTC30m
2026-07-24 KAP747 ORD → MBL Jul 24, 19:10 UTCJul 24, 19:40 UTC30m
2026-07-24 KAP747 ORD → MBL Jul 24, 16:40 UTCJul 24, 17:10 UTC30m
2026-07-24 KAP747 ORD → MBL Jul 24, 15:30 UTCJul 24, 16:00 UTC30m
2026-07-24 KAP747 ORD → MBL Jul 24, 13:35 UTCJul 24, 14:05 UTC30m
2026-07-24 KAP747 ORD → MBL Jul 24, 12:20 UTCJul 24, 12:45 UTC25m
2026-07-24 KAP747 ORD → MBL Jul 24, 11:25 UTCJul 24, 11:35 UTC10m
2026-07-23 KAP109 BOS → ACK Jul 23, 21:05 UTCJul 23, 22:10 UTC1h 5m
2026-07-23 KAP747 ORD → MBL Jul 23, 19:15 UTCJul 23, 20:10 UTC55m
2026-07-23 KAP747 ORD → MBL Jul 23, 18:10 UTCJul 23, 18:30 UTC20m
2026-07-22 KAP7021 - Jul 22, 17:10 UTCJul 22, 17:50 UTC40m
2026-07-20 KAP516 BOS → AUG Jul 20, 18:05 UTCJul 20, 19:00 UTC55m
2026-07-19 KAP747 - Jul 19, 16:35 UTCJul 19, 17:15 UTC40m
2026-07-19 KAP747 - Jul 19, 15:15 UTCJul 19, 15:35 UTC20m
2026-07-19 KAP747 - Jul 19, 12:15 UTCJul 19, 12:35 UTC20m
2026-07-19 KAP747 - Jul 19, 11:25 UTCJul 19, 12:10 UTC45m
2026-07-18 KAP747 - Jul 18, 22:50 UTCJul 18, 23:55 UTC1h 5m
2026-07-18 KAP747 - Jul 18, 21:10 UTCJul 18, 21:45 UTC35m
2026-07-18 KAP747 - Jul 18, 17:00 UTCJul 18, 17:30 UTC30m
2026-07-18 KAP747 - Jul 18, 15:20 UTCJul 18, 15:50 UTC30m
2026-07-18 KAP747 - Jul 18, 13:30 UTCJul 18, 14:00 UTC30m
2026-07-18 KAP747 - Jul 18, 12:25 UTCJul 18, 12:55 UTC30m
2026-07-18 KAP747 - Jul 18, 11:35 UTCJul 18, 11:45 UTC10m
2026-07-17 KAP747 - Jul 17, 20:40 UTCJul 17, 22:05 UTC1h 25m
2026-07-17 KAP747 - Jul 17, 17:55 UTCJul 17, 19:25 UTC1h 30m
2026-07-17 KAP747 - Jul 17, 13:35 UTCJul 17, 14:00 UTC25m
2026-07-17 KAP747 - Jul 17, 12:19 UTCJul 17, 12:50 UTC30m
2026-07-17 KAP747 - Jul 17, 11:25 UTCJul 17, 11:35 UTC10m
2026-07-16 KAP747 BOS → HYA Jul 16, 18:05 UTCJul 16, 18:29 UTC25m
2026-07-16 KAP747 - Jul 16, 16:35 UTCJul 16, 17:05 UTC30m
2026-07-16 KAP747 BOS → MVY Jul 16, 15:35 UTCJul 16, 15:55 UTC20m
2026-07-16 KAP747 - Jul 16, 14:05 UTCJul 16, 14:29 UTC25m
2026-07-16 KAP747 BOS → MVY Jul 16, 12:14 UTCJul 16, 12:40 UTC25m
2026-07-16 KAP747 - Jul 16, 11:10 UTCJul 16, 11:34 UTC25m
2026-07-15 KAP747 - Jul 15, 20:45 UTCJul 15, 21:10 UTC25m
2026-07-15 KAP747 - Jul 15, 19:15 UTCJul 15, 19:45 UTC30m

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 N903CA page for operator, model, and routing details .

Mode-S AC7A84 frequently asked

What is Mode-S code AC7A84?
AC7A84 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N903CA.
Where is Mode-S AC7A84 registered?
Mode-S code AC7A84 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 AC7A84 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC7A84, octal 53075204, decimal 11,303,556.
What flights does AC7A84 operate?
Mode-S AC7A84 has broadcast 20 distinct callsigns, including KAP747, KAP325, KAP314, KAP115, KAP925.