Apparatus

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sensors Mode-S transponder

ADA699

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N979RP · EMBRAER ERJ-170-100 · operated by REPUBLIC AIRWAYS INC

Hex
ADA699
Octal
53323231
Decimal
11,380,377
Country
US
Tail
N979RP
Type
E170
No current signal · last broadcast Jul 26, 22:10 UTC
Flights observed
695
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:10 UTC

Last known position

Most recent position reported by Mode-S ADA699.

Country allocation

The ICAO 24-bit address ADA699 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
RPA4509 - 23 2026-07-17
RPA4753 Republic Airlines 20 2026-05-20
RPA4556 - 20 2026-07-15
RPA4479 Republic Airlines 18 2026-07-23
RPA4623 - 17 2026-07-13
RPA4591 Republic Airlines 16 2026-07-24
RPA4550 - 16 2026-07-15
RPA4472 Republic Airlines 16 2026-05-15
RPA4373 - 16 2026-07-17
RPA4502 - 15 2026-07-08
RPA4624 - 14 2026-07-14
RPA4347 - 14 2026-07-11
RPA4670 Republic Airlines 13 2026-07-23
RPA4667 Republic Airlines 13 2026-07-23
RPA4404 - 13 2026-07-15
RPA4390 Republic Airlines 13 2026-05-14
RPA4614 - 12 2026-07-04
RPA4570 Republic Airlines 12 2026-07-24
RPA4471 Republic Airlines 12 2026-07-24
RPA4445 Republic Airlines 12 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RPA4497 PIT → PHL Jul 26, 20:55 UTCJul 26, 22:05 UTC1h 10m
2026-07-26 RPA4658 JFK → RDU Jul 26, 17:30 UTCJul 26, 18:40 UTC1h 10m
2026-07-26 RPA4712 ILM → LGA Jul 26, 14:00 UTCJul 26, 16:10 UTC2h 10m
2026-07-25 RPA4489 AGS → LGA Jul 25, 20:25 UTCJul 25, 21:45 UTC1h 20m
2026-07-25 RPA4639 LGA → IAH Jul 25, 17:10 UTCJul 25, 18:20 UTC1h 10m
2026-07-25 RPA4639 LGA → IAH Jul 25, 17:08 UTCJul 25, 18:19 UTC1h 11m
2026-07-25 RPA4344 ORD → BOS Jul 25, 14:15 UTCJul 25, 15:25 UTC1h 10m
2026-07-25 RPA4531 SDF → DCA Jul 25, 12:05 UTCJul 25, 13:00 UTC55m
2026-07-25 RPA4531 SDF → DCA Jul 25, 12:01 UTCJul 25, 12:59 UTC58m
2026-07-25 RPA4410 BOS → JFK Jul 25, 00:45 UTCJul 25, 01:50 UTC1h 5m
2026-07-24 RPA4471 MEM → LGA Jul 24, 22:36 UTCJul 24, 23:38 UTC1h 2m
2026-07-24 RPA4471 MEM → LGA Jul 24, 20:40 UTCJul 24, 21:35 UTC55m
2026-07-24 RPA4570 JFK → BWI Jul 24, 18:05 UTCJul 24, 18:55 UTC50m
2026-07-24 RPA4570 JFK → BWI Jul 24, 18:01 UTCJul 24, 18:49 UTC48m
2026-07-24 RPA4570 JFK → BWI Jul 24, 16:20 UTCJul 24, 16:50 UTC30m
2026-07-24 RPA4591 DCA → LGA Jul 24, 13:10 UTCJul 24, 15:00 UTC1h 50m
2026-07-23 RPA4593 LGA → ORF Jul 23, 22:10 UTCJul 24, 00:10 UTC2h 0m
2026-07-23 RPA4593 LGA → ORF Jul 23, 22:09 UTCJul 24, 00:10 UTC2h 1m
2026-07-23 RPA4479 JFK → RDU Jul 23, 20:10 UTCJul 23, 21:20 UTC1h 10m
2026-07-23 RRPA4479 - Jul 23, 17:45 UTCJul 23, 18:45 UTC1h 0m
2026-07-23 RPA4670 LGA → ATL Jul 23, 13:55 UTCJul 23, 15:25 UTC1h 30m
2026-07-23 RPA4667 IND → PHL Jul 23, 03:00 UTCJul 23, 04:30 UTC1h 30m
2026-07-23 RPA4471 MEM → LGA Jul 23, 00:45 UTCJul 23, 01:45 UTC1h 0m
2026-07-22 RPA4471 MEM → LGA Jul 22, 22:15 UTCJul 22, 23:15 UTC1h 0m
2026-07-22 RPA4570 JFK → BWI Jul 22, 18:10 UTCJul 22, 18:55 UTC45m
2026-07-22 RPA4570 JFK → BWI Jul 22, 18:09 UTCJul 22, 18:53 UTC44m
2026-07-22 RPA4570 JFK → BWI Jul 22, 16:45 UTCJul 22, 17:20 UTC35m
2026-07-22 RPA4486 MEM → PHL Jul 22, 14:40 UTCJul 22, 15:30 UTC50m
2026-07-22 RPA4486 MEM → PHL Jul 22, 12:40 UTCJul 22, 13:45 UTC1h 5m
2026-07-21 RPA4610 PHL → TVC Jul 21, 14:45 UTCJul 21, 15:45 UTC1h 0m
2026-07-20 RPA9928 - Jul 20, 20:00 UTCJul 20, 21:05 UTC1h 5m
2026-07-19 RPA4423 LGA → ILM Jul 19, 19:20 UTCJul 19, 20:45 UTC1h 25m
2026-07-19 RPA4357 - Jul 19, 16:45 UTCJul 19, 18:15 UTC1h 30m
2026-07-19 RPA9929 BGR → IND Jul 19, 12:55 UTCJul 19, 15:20 UTC2h 25m
2026-07-18 RPA4343 LGA → BGR Jul 18, 17:00 UTCJul 18, 17:45 UTC45m
2026-07-18 RPA4670 - Jul 18, 12:35 UTCJul 18, 14:10 UTC1h 35m
2026-07-18 RPA4667 - Jul 18, 02:45 UTCJul 18, 04:15 UTC1h 31m
2026-07-18 RPA4667 LGA → CAE Jul 18, 02:44 UTCJul 18, 04:14 UTC1h 30m
2026-07-17 RPA4509 STL → LGA Jul 17, 23:55 UTCJul 18, 02:00 UTC2h 5m
2026-07-17 RPA4509 STL → LGA Jul 17, 23:54 UTCJul 18, 01:55 UTC2h 1m
2026-07-17 RPA4509 - Jul 17, 18:19 UTCJul 17, 19:20 UTC1h 0m
2026-07-17 RPA4509 - Jul 17, 17:15 UTCJul 17, 18:15 UTC1h 0m
2026-07-17 RPA4373 BOS → LGA Jul 17, 15:13 UTCJul 17, 15:58 UTC45m
2026-07-17 RPA4373 LGA → BOS Jul 17, 13:45 UTCJul 17, 14:24 UTC40m
2026-07-17 RPA4670 - Jul 17, 10:15 UTCJul 17, 11:45 UTC1h 30m
2026-07-17 RPA4667 - Jul 17, 00:40 UTCJul 17, 02:05 UTC1h 25m
2026-07-16 RPA4471 ORF → LGA Jul 16, 22:15 UTCJul 16, 23:15 UTC1h 0m
2026-07-16 RPA4471 LGA → ORF Jul 16, 20:25 UTCJul 16, 21:19 UTC55m
2026-07-16 RPA4570 - Jul 16, 17:54 UTCJul 16, 18:44 UTC50m
2026-07-16 RPA4570 - Jul 16, 16:15 UTCJul 16, 16:44 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 N979RP page for operator, model, and routing details .

Mode-S ADA699 frequently asked

What is Mode-S code ADA699?
ADA699 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N979RP.
Where is Mode-S ADA699 registered?
Mode-S code ADA699 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 ADA699 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADA699, octal 53323231, decimal 11,380,377.
What flights does ADA699 operate?
Mode-S ADA699 has broadcast 20 distinct callsigns, including RPA4509, RPA4753, RPA4556, RPA4479, RPA4623.