Apparatus

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sensors Mode-S transponder

AC981A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N910QS · CESSNA 680 Citation Latitude · operated by BEARS AIR LLC, COLMENA SKY LLC, SIMPSON GARY, GB LONGITUDE LLC, MATHRUBOOTHAM GIRISH, LANK HARLEY

Hex
AC981A
Octal
53114032
Decimal
11,311,130
Country
US
Tail
N910QS
Type
C68A
Broadcasting now · callsign EJA910 · 13,400 ft
Flights observed
103
Distinct callsigns
2
Country
US
Last broadcast
22m ago

Current position

AC981A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC981A 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
EJA910 NetJets 95 2026-06-02
N910QS - 8 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 EJA910 OKC → PHX Jun 2, 17:35 UTCJun 2, 20:30 UTC2h 55m
2026-06-01 EJA910 OKC → PHX Jun 1, 18:15 UTCJun 1, 23:30 UTC5h 15m
2026-06-01 EJA910 OKC → PHX Jun 1, 02:10 UTCJun 1, 02:50 UTC40m
2026-05-31 EJA910 OKC → PHX May 31, 22:45 UTCMay 31, 23:55 UTC1h 10m
2026-05-31 EJA910 OKC → PHX May 31, 21:15 UTCMay 31, 22:00 UTC45m
2026-05-31 N910QS - May 31, 19:05 UTCMay 31, 19:45 UTC40m
2026-05-31 N910QS - May 31, 15:00 UTCMay 31, 15:10 UTC10m
2026-05-31 N910QS - May 31, 13:20 UTCMay 31, 13:55 UTC35m
2026-05-29 EJA910 OKC → PHX May 29, 19:50 UTCMay 29, 20:20 UTC30m
2026-05-29 EJA910 OKC → PHX May 29, 18:00 UTCMay 29, 18:55 UTC55m
2026-05-29 EJA910 OKC → PHX May 29, 11:55 UTCMay 29, 14:55 UTC3h 0m
2026-05-28 EJA910 OKC → PHX May 28, 20:30 UTCMay 28, 23:30 UTC3h 0m
2026-05-28 EJA910 OKC → PHX May 28, 19:10 UTCMay 28, 19:55 UTC45m
2026-05-28 EJA910 OKC → PHX May 28, 17:20 UTCMay 28, 18:05 UTC45m
2026-05-28 EJA910 OKC → PHX May 28, 15:00 UTCMay 28, 16:00 UTC1h 0m
2026-05-20 EJA910 OKC → PHX May 20, 21:45 UTCMay 21, 00:15 UTC2h 30m
2026-05-20 EJA910 OKC → PHX May 20, 18:20 UTCMay 20, 20:15 UTC1h 55m
2026-05-20 EJA910 OKC → PHX May 20, 15:00 UTCMay 20, 17:00 UTC2h 0m
2026-05-20 EJA910 OKC → PHX May 20, 12:45 UTCMay 20, 13:35 UTC50m
2026-05-20 EJA910 OKC → PHX May 20, 02:10 UTCMay 20, 05:10 UTC3h 1m
2026-05-20 EJA910 OKC → PHX May 20, 00:40 UTCMay 20, 00:50 UTC10m
2026-05-19 EJA910 OKC → PHX May 19, 00:15 UTCMay 19, 02:20 UTC2h 5m
2026-05-18 EJA910 OKC → PHX May 18, 20:45 UTCMay 18, 23:20 UTC2h 35m
2026-05-18 EJA910 OKC → PHX May 18, 18:50 UTCMay 18, 20:00 UTC1h 10m
2026-05-17 N910QS AUS → APA May 17, 16:20 UTCMay 18, 00:55 UTC8h 35m
2026-05-16 EJA910 OKC → PHX May 16, 23:35 UTCMay 17, 00:45 UTC1h 10m
2026-05-16 EJA910 OKC → PHX May 16, 19:55 UTCMay 16, 20:40 UTC45m
2026-05-16 EJA910 OKC → PHX May 16, 17:05 UTCMay 16, 18:05 UTC1h 0m
2026-05-15 EJA910 OKC → PHX May 15, 19:00 UTCMay 15, 20:05 UTC1h 5m
2026-05-15 EJA910 OKC → PHX May 15, 17:50 UTCMay 15, 18:10 UTC20m
2026-05-15 EJA910 OKC → PHX May 15, 14:15 UTCMay 15, 16:45 UTC2h 29m
2026-05-14 EJA910 OKC → PHX May 14, 21:50 UTCMay 14, 22:35 UTC45m
2026-05-14 EJA910 OKC → PHX May 14, 20:15 UTCMay 14, 21:10 UTC55m
2026-05-14 EJA910 OKC → PHX May 14, 15:10 UTCMay 14, 17:40 UTC2h 30m
2026-05-14 EJA910 OKC → PHX May 14, 13:30 UTCMay 14, 13:55 UTC25m
2026-05-13 N910QS - May 13, 20:40 UTCMay 13, 21:30 UTC50m
2026-05-13 N910QS - May 13, 15:15 UTCMay 13, 16:50 UTC1h 35m
2026-05-12 EJA910 OKC → PHX May 12, 21:50 UTCMay 12, 23:25 UTC1h 35m
2026-05-12 EJA910 OKC → PHX May 12, 19:40 UTCMay 12, 21:05 UTC1h 25m
2026-05-12 EJA910 OKC → PHX May 12, 16:40 UTCMay 12, 18:50 UTC2h 10m
2026-05-12 EJA910 OKC → PHX May 12, 14:25 UTCMay 12, 15:25 UTC1h 0m
2026-05-11 EJA910 OKC → PHX May 11, 21:50 UTCMay 11, 22:35 UTC44m
2026-05-11 EJA910 OKC → PHX May 11, 17:45 UTCMay 11, 20:00 UTC2h 15m
2026-05-11 EJA910 OKC → PHX May 11, 00:00 UTCMay 11, 01:50 UTC1h 50m
2026-05-10 EJA910 OKC → PHX May 10, 21:25 UTCMay 10, 21:40 UTC15m
2026-05-10 EJA910 OKC → PHX May 10, 16:25 UTCMay 10, 19:00 UTC2h 35m
2026-05-09 EJA910 OKC → PHX May 9, 15:30 UTCMay 9, 17:15 UTC1h 45m
2026-05-09 EJA910 OKC → PHX May 9, 00:45 UTCMay 9, 01:15 UTC30m
2026-05-08 EJA910 OKC → PHX May 8, 20:35 UTCMay 8, 22:55 UTC2h 20m
2026-05-08 EJA910 OKC → PHX May 8, 18:25 UTCMay 8, 19:10 UTC45m

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 N910QS page for operator, model, and routing details .

Mode-S AC981A frequently asked

What is Mode-S code AC981A?
AC981A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N910QS.
Where is Mode-S AC981A registered?
Mode-S code AC981A 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 AC981A broadcasting right now?
Yes. Mode-S AC981A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC981A, octal 53114032, decimal 11,311,130.
What flights does AC981A operate?
Mode-S AC981A has broadcast 2 distinct callsigns, including EJA910, N910QS.