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sensors Mode-S transponder

AD8870

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N971MA · operated by METRO AVIATION INC

Hex
AD8870
Octal
53304160
Decimal
11,372,656
Country
US
Tail
N971MA
Type
EC45
No current signal · last broadcast 19m ago
Flights observed
138
Distinct callsigns
1
Country
US
Last broadcast
19m ago

Last known position

Most recent position reported by Mode-S AD8870.

Country allocation

The ICAO 24-bit address AD8870 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 1 distinct

Callsign Airline Flights Last seen
N971MA - 138 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 N971MA - Jul 15, 19:25 UTCJul 15, 20:00 UTC35m
2026-07-15 N971MA - Jul 15, 04:45 UTCJul 15, 04:55 UTC10m
2026-07-14 N971MA - Jul 14, 22:30 UTCJul 14, 22:40 UTC10m
2026-07-14 N971MA - Jul 14, 19:40 UTCJul 14, 19:50 UTC10m
2026-07-14 N971MA - Jul 14, 09:10 UTCJul 14, 09:15 UTC5m
2026-07-14 N971MA - Jul 14, 08:05 UTCJul 14, 08:25 UTC20m
2026-07-13 N971MA - Jul 13, 20:55 UTCJul 13, 21:15 UTC20m
2026-07-13 N971MA - Jul 13, 00:10 UTCJul 13, 00:20 UTC10m
2026-07-10 N971MA - Jul 10, 22:15 UTCJul 10, 22:45 UTC30m
2026-07-10 N971MA - Jul 10, 20:05 UTCJul 10, 20:30 UTC25m
2026-07-09 N971MA - Jul 9, 14:25 UTCJul 9, 14:35 UTC10m
2026-07-09 N971MA - Jul 9, 05:40 UTCJul 9, 06:50 UTC1h 10m
2026-07-09 N971MA - Jul 9, 04:25 UTCJul 9, 04:40 UTC15m
2026-07-09 N971MA - Jul 9, 01:55 UTCJul 9, 02:35 UTC40m
2026-07-08 N971MA - Jul 8, 18:05 UTCJul 8, 18:20 UTC15m
2026-07-08 N971MA - Jul 8, 16:30 UTCJul 8, 16:40 UTC10m
2026-07-08 N971MA - Jul 8, 03:55 UTCJul 8, 04:05 UTC10m
2026-07-08 N971MA - Jul 8, 01:10 UTCJul 8, 01:20 UTC10m
2026-07-06 N971MA - Jul 6, 16:55 UTCJul 6, 17:10 UTC15m
2026-07-06 N971MA - Jul 6, 00:20 UTCJul 6, 00:50 UTC30m
2026-07-05 N971MA - Jul 5, 23:00 UTCJul 5, 23:35 UTC35m
2026-07-03 N971MA - Jul 3, 01:40 UTCJul 3, 01:50 UTC10m
2026-07-02 N971MA - Jul 2, 21:10 UTCJul 2, 21:30 UTC20m
2026-07-02 N971MA - Jul 2, 12:10 UTCJul 2, 12:20 UTC10m
2026-07-02 N971MA - Jul 2, 07:15 UTCJul 2, 07:25 UTC10m
2026-07-02 N971MA - Jul 2, 02:05 UTCJul 2, 02:15 UTC10m
2026-07-01 N971MA - Jul 1, 18:00 UTCJul 1, 18:20 UTC20m
2026-07-01 N971MA - Jul 1, 14:05 UTCJul 1, 14:15 UTC10m
2026-07-01 N971MA - Jul 1, 02:35 UTCJul 1, 02:45 UTC10m
2026-06-30 N971MA - Jun 30, 18:45 UTCJun 30, 19:45 UTC1h 0m
2026-06-30 N971MA - Jun 30, 17:15 UTCJun 30, 17:25 UTC10m
2026-06-30 N971MA - Jun 30, 16:35 UTCJun 30, 16:45 UTC10m
2026-06-30 N971MA - Jun 30, 10:40 UTCJun 30, 11:00 UTC20m
2026-06-29 N971MA - Jun 29, 20:09 UTCJun 29, 20:19 UTC10m
2026-06-29 N971MA - Jun 29, 19:15 UTCJun 29, 19:24 UTC10m
2026-06-29 N971MA - Jun 29, 05:45 UTCJun 29, 05:54 UTC10m
2026-06-29 N971MA - Jun 29, 04:00 UTCJun 29, 05:00 UTC1h 0m
2026-06-29 N971MA - Jun 29, 00:39 UTCJun 29, 02:20 UTC1h 40m
2026-06-27 N971MA - Jun 27, 16:24 UTCJun 27, 17:29 UTC1h 5m
2026-06-27 N971MA - Jun 27, 14:05 UTCJun 27, 14:54 UTC50m
2026-06-26 N971MA - Jun 26, 21:50 UTCJun 26, 22:10 UTC20m
2026-06-26 N971MA - Jun 26, 20:34 UTCJun 26, 20:44 UTC10m
2026-06-26 N971MA - Jun 26, 17:50 UTCJun 26, 17:59 UTC10m
2026-06-26 N971MA - Jun 26, 01:24 UTCJun 26, 01:34 UTC10m
2026-06-24 N971MA - Jun 24, 21:00 UTCJun 24, 21:34 UTC35m
2026-06-21 N971MA - Jun 21, 09:44 UTCJun 21, 09:55 UTC10m
2026-06-21 N971MA - Jun 21, 06:55 UTCJun 21, 07:09 UTC15m
2026-06-20 N971MA - Jun 20, 05:59 UTCJun 20, 06:29 UTC30m
2026-06-20 N971MA - Jun 20, 03:49 UTCJun 20, 04:24 UTC35m
2026-06-18 N971MA - Jun 18, 19:30 UTCJun 18, 20:30 UTC1h 0m

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 N971MA page for operator, model, and routing details .

Mode-S AD8870 frequently asked

What is Mode-S code AD8870?
AD8870 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N971MA.
Where is Mode-S AD8870 registered?
Mode-S code AD8870 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 AD8870 broadcasting right now?
No active broadcast right now. Last signal was 19m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD8870, octal 53304160, decimal 11,372,656.
What flights does AD8870 operate?
Mode-S AD8870 has broadcast 1 distinct callsign, including N971MA.