Apparatus

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sensors Mode-S transponder

A70778

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N552GJ · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A70778
Octal
51603570
Decimal
10,946,424
Country
US
Tail
N552GJ
Type
CRJ7
No current signal · last broadcast 5h ago
Flights observed
630
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A70778.

Country allocation

The ICAO 24-bit address A70778 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
GJS4382 - 11 2026-07-06
GJS4381 - 11 2026-07-06
GJS4447 - 10 2026-07-12
GJS4603 - 8 2026-07-06
GJS4514 GoJet Airlines 8 2026-05-24
GJS4475 - 8 2026-06-30
GJS4456 GoJet Airlines 8 2026-05-01
GJS4417 - 8 2026-06-30
GJS4571 - 7 2026-07-05
GJS4563 - 7 2026-07-12
GJS4429 - 7 2026-07-05
GJS4596 GoJet Airlines 6 2026-05-20
GJS4493 GoJet Airlines 6 2026-06-13
GJS4489 GoJet Airlines 6 2026-06-02
GJS4421 - 6 2026-07-11
GJS4416 GoJet Airlines 6 2026-05-14
GJS4409 - 6 2026-07-13
GJS4175 - 6 2026-07-10
GJS4168 - 6 2026-07-11
GJS4605 GoJet Airlines 5 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 GJS4553 - Jul 13, 23:55 UTCJul 14, 01:20 UTC1h 25m
2026-07-13 GJS4409 - Jul 13, 20:50 UTCJul 13, 21:30 UTC40m
2026-07-13 GJS4409 GRB → ORD Jul 13, 20:55 UTCJul 13, 21:13 UTC18m
2026-07-13 GJS4554 - Jul 13, 19:05 UTCJul 13, 19:40 UTC35m
2026-07-13 GJS4193 - Jul 13, 15:45 UTCJul 13, 16:30 UTC45m
2026-07-13 GJS4537 ORD → GRB Jul 13, 14:11 UTCJul 13, 14:33 UTC22m
2026-07-13 GJS4537 - Jul 13, 13:45 UTCJul 13, 13:55 UTC10m
2026-07-13 GJS4522 - Jul 13, 10:50 UTCJul 13, 12:00 UTC1h 10m
2026-07-13 GJS4522 SCE → ORD Jul 13, 11:03 UTCJul 13, 11:53 UTC50m
2026-07-13 GJS4548 - Jul 13, 00:01 UTCJul 13, 01:05 UTC1h 5m
2026-07-12 GJS4582 - Jul 12, 22:00 UTCJul 12, 23:10 UTC1h 10m
2026-07-12 GJS4558 ORD → LEX Jul 12, 19:55 UTCJul 12, 20:45 UTC50m
2026-07-12 GJS4170 DCA → EWR Jul 12, 17:15 UTCJul 12, 17:55 UTC40m
2026-07-12 GJS4170 DCA → EWR Jul 12, 17:24 UTCJul 12, 17:43 UTC19m
2026-07-12 GJS4460 - Jul 12, 15:55 UTCJul 12, 16:20 UTC25m
2026-07-12 GJS4460 ORD → ATW Jul 12, 15:58 UTCJul 12, 16:30 UTC32m
2026-07-12 GJS4449 - Jul 12, 12:25 UTCJul 12, 14:05 UTC1h 40m
2026-07-12 GJS4447 - Jul 12, 03:05 UTCJul 12, 04:35 UTC1h 30m
2026-07-12 GJS4447 ORD → BHM Jul 12, 03:03 UTCJul 12, 04:35 UTC1h 32m
2026-07-12 GJS4563 - Jul 12, 00:10 UTCJul 12, 01:15 UTC1h 5m
2026-07-11 GJS4519 - Jul 11, 21:35 UTCJul 11, 22:25 UTC50m
2026-07-11 GJS4168 - Jul 11, 18:30 UTCJul 11, 20:10 UTC1h 40m
2026-07-11 GJS4380 ORD → BHM Jul 11, 16:08 UTCJul 11, 17:28 UTC1h 20m
2026-07-11 GJS4380 - Jul 11, 16:10 UTCJul 11, 17:25 UTC1h 15m
2026-07-11 GJS4421 - Jul 11, 13:15 UTCJul 11, 14:25 UTC1h 10m
2026-07-11 GJS4421 SGF → ORD Jul 11, 13:09 UTCJul 11, 14:20 UTC1h 11m
2026-07-11 GJS4451 - Jul 11, 02:50 UTCJul 11, 04:10 UTC1h 20m
2026-07-10 GJS4175 ABE → ORD Jul 10, 21:50 UTCJul 10, 23:55 UTC2h 5m
2026-07-10 GJS4461 ORD → ABE Jul 10, 19:26 UTCJul 10, 20:57 UTC1h 31m
2026-07-10 GJS4461 ORD → ABE Jul 10, 19:20 UTCJul 10, 20:50 UTC1h 30m
2026-07-10 GJS4525 - Jul 10, 16:30 UTCJul 10, 17:55 UTC1h 25m
2026-07-10 GJS4529 - Jul 10, 14:15 UTCJul 10, 15:30 UTC1h 15m
2026-07-10 GJS4496 - Jul 10, 10:45 UTCJul 10, 12:40 UTC1h 55m
2026-07-10 GJS4478 - Jul 10, 00:05 UTCJul 10, 01:25 UTC1h 20m
2026-07-09 GJS4409 - Jul 9, 21:15 UTCJul 9, 21:50 UTC35m
2026-07-09 GJS4409 GRB → ORD Jul 9, 20:55 UTCJul 9, 21:56 UTC1h 1m
2026-07-09 GJS4554 - Jul 9, 19:30 UTCJul 9, 20:00 UTC30m
2026-07-09 GJS4554 ORD → GRB Jul 9, 19:26 UTCJul 9, 20:01 UTC35m
2026-07-09 GJS4193 - Jul 9, 16:50 UTCJul 9, 17:20 UTC30m
2026-07-09 GJS4193 GRB → ORD Jul 9, 16:44 UTCJul 9, 17:30 UTC46m
2026-07-09 GJS4537 - Jul 9, 15:15 UTCJul 9, 15:40 UTC25m
2026-07-09 GJS4423 STL → ORD Jul 9, 12:30 UTCJul 9, 13:25 UTC55m
2026-07-09 GJS4423 STL → ORD Jul 9, 12:37 UTCJul 9, 13:18 UTC41m
2026-07-07 GJS3395 - Jul 7, 15:05 UTCJul 7, 16:00 UTC55m
2026-07-07 GJS4589 ORD → DAY Jul 7, 02:53 UTCJul 7, 03:13 UTC20m
2026-07-07 GJS4589 - Jul 7, 02:35 UTCJul 7, 03:15 UTC40m
2026-07-06 GJS4603 - Jul 6, 23:10 UTCJul 6, 23:50 UTC40m
2026-07-06 GJS4194 - Jul 6, 21:45 UTCJul 6, 22:15 UTC30m
2026-07-06 GJS4381 BUF → ORD Jul 6, 18:19 UTCJul 6, 18:55 UTC36m
2026-07-06 GJS4381 - Jul 6, 17:55 UTCJul 6, 19:15 UTC1h 20m

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 N552GJ page for operator, model, and routing details .

Mode-S A70778 frequently asked

What is Mode-S code A70778?
A70778 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N552GJ.
Where is Mode-S A70778 registered?
Mode-S code A70778 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 A70778 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A70778, octal 51603570, decimal 10,946,424.
What flights does A70778 operate?
Mode-S A70778 has broadcast 20 distinct callsigns, including GJS4382, GJS4381, GJS4447, GJS4603, GJS4514.