Apparatus

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sensors Mode-S transponder

AD385F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N951AA · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
AD385F
Octal
53234137
Decimal
11,352,159
Country
US
Tail
N951AA
Type
B738
No current signal · last broadcast Jul 26, 20:45 UTC
Flights observed
519
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:45 UTC

Last known position

Most recent position reported by Mode-S AD385F.

Country allocation

The ICAO 24-bit address AD385F 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
AAL2512 American Airlines 6 2026-05-21
AAL1573 American Airlines 6 2026-07-25
AAL1089 American Airlines 6 2026-07-24
AAL2518 - 5 2026-07-15
AAL2366 - 5 2026-06-22
AAL2282 - 5 2026-06-18
AAL2200 - 5 2026-07-05
AAL1449 - 5 2026-07-17
AAL3300 - 4 2026-06-25
AAL3203 American Airlines 4 2026-04-13
AAL1777 - 4 2026-07-08
AAL1708 American Airlines 4 2026-07-25
AAL1669 - 4 2026-06-16
AAL1623 American Airlines 4 2026-05-30
AAL696 American Airlines 3 2026-04-27
AAL585 - 3 2026-04-15
AAL3193 - 3 2026-06-21
AAL3068 American Airlines 3 2026-05-14
AAL2703 American Airlines 3 2026-04-21
AAL2603 American Airlines 3 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2352 LGA → DCA Jul 26, 19:05 UTCJul 26, 20:45 UTC1h 40m
2026-07-26 AAL1352 AUS → MIA Jul 26, 16:05 UTCJul 26, 17:45 UTC1h 40m
2026-07-26 AAL1352 AUS → MIA Jul 26, 13:10 UTCJul 26, 14:45 UTC1h 35m
2026-07-26 AAL3235 PDX → PHX Jul 26, 11:00 UTCJul 26, 11:35 UTC35m
2026-07-26 AAL1659 CLT → SFO Jul 26, 01:25 UTCJul 26, 02:00 UTC35m
2026-07-25 AAL1573 CMH → CLT Jul 25, 21:55 UTCJul 25, 23:45 UTC1h 50m
2026-07-25 AAL1573 CMH → CLT Jul 25, 19:00 UTCJul 25, 20:30 UTC1h 30m
2026-07-25 AAL1759 DFW → PHL Jul 25, 15:05 UTCJul 25, 17:05 UTC2h 0m
2026-07-25 AAL1759 DFW → PHL Jul 25, 11:50 UTCJul 25, 13:25 UTC1h 35m
2026-07-25 AAL1708 MCO → ORD Jul 25, 09:15 UTCJul 25, 10:20 UTC1h 5m
2026-07-25 AAL1708 MCO → ORD Jul 25, 09:12 UTCJul 25, 10:19 UTC1h 7m
2026-07-25 AAL3216 SFO → PHX Jul 25, 01:35 UTCJul 25, 03:45 UTC2h 10m
2026-07-24 AAL1089 OMA → CLT Jul 24, 20:20 UTCJul 24, 23:50 UTC3h 30m
2026-07-24 AAL1089 OMA → CLT Jul 24, 20:17 UTCJul 24, 23:45 UTC3h 28m
2026-07-24 AAL1089 OMA → CLT Jul 24, 15:45 UTCJul 24, 19:10 UTC3h 25m
2026-07-23 AAL2155 MIA → SAP Jul 23, 23:15 UTCJul 24, 14:00 UTC14h 45m
2026-07-23 AAL1144 CTG → MIA Jul 23, 20:50 UTCJul 23, 21:15 UTC25m
2026-07-23 AAL1144 CTG → MIA Jul 23, 18:44 UTCJul 23, 21:15 UTC2h 31m
2026-07-23 AAL1144 CTG → MIA Jul 23, 18:45 UTCJul 23, 19:10 UTC25m
2026-07-23 AAL1145 - Jul 23, 15:10 UTCJul 23, 17:25 UTC2h 15m
2026-07-23 AAL892 PIT → DFW Jul 23, 10:10 UTCJul 23, 12:45 UTC2h 35m
2026-07-23 AAL670 PVD → ORD Jul 23, 01:50 UTCJul 23, 04:40 UTC2h 50m
2026-07-22 AAL1182 CLT → PHL Jul 22, 21:35 UTCJul 22, 23:55 UTC2h 20m
2026-07-22 AAL1013 DFW → GUA Jul 22, 19:55 UTCJul 22, 20:05 UTC10m
2026-07-22 AAL1013 DFW → GUA Jul 22, 17:15 UTCJul 22, 18:15 UTC1h 0m
2026-07-22 AAL1303 EWR → DFW Jul 22, 12:20 UTCJul 22, 15:25 UTC3h 5m
2026-07-22 AAL2549 AUS → CLT Jul 22, 01:50 UTCJul 22, 03:20 UTC1h 30m
2026-07-21 AAL2433 RSW → ORD Jul 21, 15:45 UTCJul 21, 18:30 UTC2h 45m
2026-07-21 AAL2433 - Jul 21, 12:05 UTCJul 21, 14:25 UTC2h 20m
2026-07-20 AAL2013 PHL → CLE Jul 20, 23:15 UTCJul 21, 02:30 UTC3h 14m
2026-07-20 AAL2023 DFW → SFO Jul 20, 20:55 UTCJul 20, 21:40 UTC45m
2026-07-20 AAL1937 CLT → BOS Jul 20, 15:20 UTCJul 20, 17:30 UTC2h 10m
2026-07-20 AAL3021 - Jul 20, 03:15 UTCJul 20, 06:00 UTC2h 45m
2026-07-20 AAL3021 PHL → IAH Jul 20, 03:12 UTCJul 20, 05:56 UTC2h 44m
2026-07-19 AAL1855 ORD → LAS Jul 19, 20:35 UTCJul 19, 23:05 UTC2h 30m
2026-07-19 AAL1855 ORD → LAS Jul 19, 17:00 UTCJul 19, 19:10 UTC2h 10m
2026-07-19 AAL3063 - Jul 19, 11:15 UTCJul 19, 11:25 UTC10m
2026-07-19 AAL3063 SJU → PHL Jul 19, 11:13 UTCJul 19, 14:41 UTC3h 28m
2026-07-19 AAL1364 PHL → ATL Jul 19, 01:40 UTCJul 19, 01:50 UTC10m
2026-07-18 AAL1364 PHL → ATL Jul 18, 23:40 UTCJul 19, 00:00 UTC20m
2026-07-18 AAL1260 - Jul 18, 14:30 UTCJul 18, 21:20 UTC6h 50m
2026-07-18 AAL1418 BOS → MIA Jul 18, 09:20 UTCJul 18, 12:25 UTC3h 5m
2026-07-17 AAL2595 - Jul 17, 22:49 UTCJul 18, 00:29 UTC1h 40m
2026-07-17 AAL2595 CLT → BOS Jul 17, 22:47 UTCJul 18, 00:28 UTC1h 41m
2026-07-17 AAL1681 - Jul 17, 20:04 UTCJul 17, 21:10 UTC1h 5m
2026-07-17 AAL1681 CLE → CLT Jul 17, 20:01 UTCJul 17, 21:07 UTC1h 6m
2026-07-17 AAL1681 - Jul 17, 17:40 UTCJul 17, 18:44 UTC1h 5m
2026-07-17 AAL1449 - Jul 17, 14:24 UTCJul 17, 15:55 UTC1h 30m
2026-07-17 AAL1449 - Jul 17, 11:39 UTCJul 17, 13:05 UTC1h 25m
2026-07-17 AAL1708 - Jul 17, 09:04 UTCJul 17, 10:05 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 N951AA page for operator, model, and routing details .

Mode-S AD385F frequently asked

What is Mode-S code AD385F?
AD385F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N951AA.
Where is Mode-S AD385F registered?
Mode-S code AD385F 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 AD385F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD385F, octal 53234137, decimal 11,352,159.
What flights does AD385F operate?
Mode-S AD385F has broadcast 20 distinct callsigns, including AAL2512, AAL1573, AAL1089, AAL2518, AAL2366.