Apparatus

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sensors Mode-S transponder

A98B6B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N714FE · operated by FEDERAL EXPRESS CORP

Hex
A98B6B
Octal
52305553
Decimal
11,111,275
Country
US
Tail
N714FE
No current signal · last broadcast 8h ago
Flights observed
9
Distinct callsigns
2
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A98B6B.

Country allocation

The ICAO 24-bit address A98B6B 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 2 distinct

Callsign Airline Flights Last seen
MTN7503 - 5 2026-06-12
MTN8503 - 4 2026-06-12

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-06-12 MTN7503 - Jun 12, 23:15 UTCJun 12, 23:40 UTC25m
2026-06-12 MTN8503 - Jun 12, 13:25 UTCJun 12, 13:45 UTC20m
2026-06-11 MTN7503 - Jun 11, 23:10 UTCJun 11, 23:40 UTC30m
2026-06-11 MTN8503 - Jun 11, 12:30 UTCJun 11, 12:50 UTC20m
2026-06-10 MTN7503 - Jun 10, 23:05 UTCJun 10, 23:35 UTC30m
2026-06-10 MTN8503 - Jun 10, 12:25 UTCJun 10, 12:50 UTC25m
2026-06-09 MTN7503 - Jun 9, 23:05 UTCJun 9, 23:30 UTC25m
2026-06-09 MTN8503 - Jun 9, 12:30 UTCJun 9, 12:50 UTC20m
2026-06-08 MTN7503 - Jun 8, 23:15 UTCJun 8, 23:40 UTC25m

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 N714FE page for operator, model, and routing details .

Mode-S A98B6B frequently asked

What is Mode-S code A98B6B?
A98B6B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N714FE.
Where is Mode-S A98B6B registered?
Mode-S code A98B6B 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 A98B6B broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A98B6B, octal 52305553, decimal 11,111,275.
What flights does A98B6B operate?
Mode-S A98B6B has broadcast 2 distinct callsigns, including MTN7503, MTN8503.