sensors Mode-S transponder

A70B2F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N553GJ · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A70B2F
Octal
51605457
Decimal
10,947,375
Country
US
Tail
N553GJ
Type
CRJ7
No current signal · last broadcast 1d ago
Flights observed
13
Distinct callsigns
7
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A70B2F.

Country allocation

The ICAO 24-bit address A70B2F 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 7 distinct

Callsign Airline Flights Last seen
GJS4181 GoJet Airlines 4 2026-04-13
GJS4584 - 2 2026-04-13
GJS4483 - 2 2026-04-13
GJS4168 GoJet Airlines 2 2026-04-13
GJS4511 - 1 2026-04-13
GJS4435 GoJet Airlines 1 2026-04-12
GJS4405 - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-13 GJS4511 - Apr 13, 23:10 UTCApr 13, 23:40 UTC30m
2026-04-13 GJS4584 - Apr 13, 20:40 UTCApr 13, 21:40 UTC1h 0m
2026-04-13 GJS4584 - Apr 13, 20:50 UTCApr 13, 22:04 UTC1h 14m
2026-04-13 GJS4483 - Apr 13, 18:50 UTCApr 13, 19:20 UTC30m
2026-04-13 GJS4483 FSD → MSN Apr 13, 16:42 UTCApr 13, 17:51 UTC1h 9m
2026-04-13 GJS4405 - Apr 13, 14:16 UTCApr 13, 15:38 UTC1h 22m
2026-04-13 GJS4181 EWR → DCA Apr 13, 12:20 UTCApr 13, 12:55 UTC35m
2026-04-13 GJS4181 EWR → DCA Apr 13, 11:55 UTCApr 13, 12:55 UTC1h 0m
2026-04-13 GJS4181 EWR → DCA Apr 13, 10:45 UTCApr 13, 12:41 UTC1h 56m
2026-04-13 GJS4181 EWR → DCA Apr 13, 11:15 UTCApr 13, 12:52 UTC1h 37m
2026-04-13 GJS4168 DCA → EWR Apr 13, 00:20 UTCApr 13, 01:10 UTC50m
2026-04-12 GJS4168 DCA → EWR Apr 12, 23:55 UTCApr 13, 01:10 UTC1h 15m
2026-04-12 GJS4435 EWR → DCA Apr 12, 19:10 UTCApr 12, 19:45 UTC35m

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 N553GJ page for operator, model, and routing details .

Mode-S A70B2F frequently asked

What is Mode-S code A70B2F?
A70B2F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N553GJ.
Where is Mode-S A70B2F registered?
Mode-S code A70B2F 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 A70B2F 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 A70B2F, octal 51605457, decimal 10,947,375.
What flights does A70B2F operate?
Mode-S A70B2F has broadcast 7 distinct callsigns, including GJS4181, GJS4584, GJS4483, GJS4168, GJS4511.