Apparatus

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sensors Mode-S transponder

A70BFF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N553QS · CESSNA 680 Citation Latitude · operated by AIVIA LLC, ALBATON AIR LLC, STEWART-PRITCHETT ANDREA, CONCRETE PUMP PARTNERS LLC, DOUBLE P AVIATION LLC, TANZBERGER ERIC DAVID

Hex
A70BFF
Octal
51605777
Decimal
10,947,583
Country
US
Tail
N553QS
Type
C68A
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
224
Distinct callsigns
3
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S A70BFF.

Country allocation

The ICAO 24-bit address A70BFF 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 3 distinct

Callsign Airline Flights Last seen
EJA553 NetJets 203 2026-07-26
N553QS - 19 2026-07-22
EJA7425 NetJets 2 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EJA553 PWK → SFO Jul 26, 19:20 UTCJul 26, 21:10 UTC1h 50m
2026-07-26 EJA553 PWK → SFO Jul 26, 15:55 UTCJul 26, 18:35 UTC2h 40m
2026-07-25 EJA553 PWK → SFO Jul 25, 23:55 UTCJul 26, 00:20 UTC25m
2026-07-25 EJA553 PWK → SFO Jul 25, 20:20 UTCJul 25, 22:55 UTC2h 35m
2026-07-25 EJA553 PWK → SFO Jul 25, 18:05 UTCJul 25, 18:40 UTC35m
2026-07-24 EJA553 PWK → SFO Jul 24, 23:10 UTCJul 25, 00:05 UTC55m
2026-07-24 EJA553 PWK → SFO Jul 24, 20:25 UTCJul 24, 21:00 UTC35m
2026-07-24 EJA553 PWK → SFO Jul 24, 17:50 UTCJul 24, 19:35 UTC1h 45m
2026-07-24 EJA553 PWK → SFO Jul 24, 15:30 UTCJul 24, 16:05 UTC35m
2026-07-24 EJA553 PWK → SFO Jul 24, 12:55 UTCJul 24, 14:05 UTC1h 10m
2026-07-24 EJA553 PWK → SFO Jul 24, 03:25 UTCJul 24, 04:20 UTC55m
2026-07-23 EJA553 PWK → SFO Jul 23, 22:20 UTCJul 24, 02:15 UTC3h 55m
2026-07-23 EJA553 PWK → SFO Jul 23, 20:20 UTCJul 23, 20:40 UTC20m
2026-07-23 EJA553 PWK → SFO Jul 23, 17:45 UTCJul 23, 18:55 UTC1h 10m
2026-07-23 EJA553 PWK → SFO Jul 23, 16:10 UTCJul 23, 16:50 UTC40m
2026-07-23 EJA553 PWK → SFO Jul 23, 13:45 UTCJul 23, 14:35 UTC50m
2026-07-23 EJA553 PWK → SFO Jul 23, 05:25 UTCJul 23, 05:55 UTC30m
2026-07-23 EJA553 PWK → SFO Jul 23, 01:20 UTCJul 23, 04:35 UTC3h 15m
2026-07-22 EJA553 PWK → SFO Jul 22, 21:10 UTCJul 22, 21:35 UTC25m
2026-07-22 N553QS - Jul 22, 15:10 UTCJul 22, 20:20 UTC5h 10m
2026-07-22 N553QS - Jul 22, 13:40 UTCJul 22, 13:50 UTC10m
2026-07-22 N553QS - Jul 22, 11:30 UTCJul 22, 11:50 UTC20m
2026-07-21 EJA553 PWK → SFO Jul 21, 14:05 UTCJul 21, 17:00 UTC2h 55m
2026-07-21 EJA553 PWK → SFO Jul 21, 11:55 UTCJul 21, 12:35 UTC40m
2026-07-20 EJA553 PWK → SFO Jul 20, 19:10 UTCJul 20, 21:45 UTC2h 35m
2026-07-20 EJA553 PWK → SFO Jul 20, 15:10 UTCJul 20, 17:55 UTC2h 45m
2026-07-19 EJA553 PWK → SFO Jul 19, 23:05 UTCJul 20, 01:15 UTC2h 10m
2026-07-19 EJA553 PWK → SFO Jul 19, 20:30 UTCJul 19, 21:15 UTC45m
2026-07-19 EJA553 PWK → SFO Jul 19, 18:00 UTCJul 19, 19:05 UTC1h 5m
2026-07-19 EJA553 PWK → SFO Jul 19, 15:25 UTCJul 19, 17:10 UTC1h 45m
2026-07-09 EJA553 - Jul 9, 20:50 UTCJul 9, 22:55 UTC2h 5m
2026-07-09 EJA553 - Jul 9, 14:25 UTCJul 9, 16:50 UTC2h 25m
2026-07-07 EJA553 - Jul 7, 18:55 UTCJul 7, 22:20 UTC3h 25m
2026-07-06 EJA553 - Jul 6, 21:35 UTCJul 7, 02:40 UTC5h 5m
2026-07-06 N553QS - Jul 6, 17:00 UTCJul 6, 17:45 UTC45m
2026-07-06 N553QS - Jul 6, 14:40 UTCJul 6, 15:00 UTC20m
2026-07-05 EJA553 - Jul 5, 22:20 UTCJul 6, 01:00 UTC2h 40m
2026-07-05 EJA553 - Jul 5, 19:35 UTCJul 5, 20:05 UTC30m
2026-07-05 EJA553 - Jul 5, 16:30 UTCJul 5, 18:40 UTC2h 10m
2026-07-05 EJA553 - Jul 5, 14:25 UTCJul 5, 15:15 UTC50m
2026-07-04 EJA553 - Jul 4, 18:00 UTCJul 4, 18:20 UTC20m
2026-07-02 EJA553 BUF → HPN Jul 2, 17:15 UTCJul 2, 18:05 UTC50m
2026-07-02 EJA553 - Jul 2, 00:15 UTCJul 2, 00:50 UTC35m
2026-07-01 EJA553 - Jul 1, 20:50 UTCJul 1, 22:35 UTC1h 45m
2026-07-01 EJA553 - Jul 1, 18:05 UTCJul 1, 18:50 UTC45m
2026-07-01 EJA553 - Jul 1, 13:05 UTCJul 1, 15:25 UTC2h 20m
2026-06-30 EJA553 - Jun 30, 20:50 UTCJun 30, 21:55 UTC1h 5m
2026-06-30 EJA553 - Jun 30, 18:40 UTCJun 30, 19:35 UTC55m
2026-06-30 EJA553 VNY → SCF Jun 30, 16:15 UTCJun 30, 17:15 UTC1h 0m
2026-06-30 EJA553 SBA → VNY Jun 30, 14:35 UTCJun 30, 15:05 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 N553QS page for operator, model, and routing details .

Mode-S A70BFF frequently asked

What is Mode-S code A70BFF?
A70BFF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N553QS.
Where is Mode-S A70BFF registered?
Mode-S code A70BFF 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 A70BFF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A70BFF, octal 51605777, decimal 10,947,583.
What flights does A70BFF operate?
Mode-S A70BFF has broadcast 3 distinct callsigns, including EJA553, N553QS, EJA7425.