Apparatus

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sensors Mode-S transponder

AD9EDF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N977NN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
AD9EDF
Octal
53317337
Decimal
11,378,399
Country
US
Tail
N977NN
Type
B738
No current signal · last broadcast Jul 26, 20:45 UTC
Flights observed
538
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:45 UTC

Last known position

Most recent position reported by Mode-S AD9EDF.

Country allocation

The ICAO 24-bit address AD9EDF 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
AAL2039 American Airlines 8 2026-07-22
AAL2753 - 7 2026-06-18
AAL2733 American Airlines 7 2026-04-15
AAL3208 - 5 2026-04-13
AAL2822 - 5 2026-06-25
AAL2262 American Airlines 5 2026-05-25
AAL1819 - 5 2026-06-21
AAL1360 American Airlines 5 2026-07-23
AAL3109 American Airlines 4 2026-05-19
AAL2906 American Airlines 4 2026-04-16
AAL2805 - 4 2026-07-15
AAL2503 American Airlines 4 2026-07-25
AAL2302 - 4 2026-06-23
AAL1979 American Airlines 4 2026-07-22
AAL1752 - 4 2026-07-16
AAL1414 - 4 2026-07-03
AAL1346 - 4 2026-06-28
AAL1045 - 4 2026-06-19
AAL1027 American Airlines 4 2026-05-16
AAL972 American Airlines 3 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2627 OKC → DFW Jul 26, 16:55 UTCJul 26, 20:45 UTC3h 50m
2026-07-26 AAL3027 LAX → CLT Jul 26, 13:00 UTCJul 26, 14:50 UTC1h 50m
2026-07-26 AAL3127 SFO → CLT Jul 26, 04:05 UTCJul 26, 05:35 UTC1h 30m
2026-07-26 AAL3127 SFO → CLT Jul 26, 04:02 UTCJul 26, 05:38 UTC1h 36m
2026-07-25 AAL2503 MCO → DCA Jul 25, 20:30 UTCJul 25, 23:50 UTC3h 20m
2026-07-25 AAL2503 MCO → DCA Jul 25, 19:43 UTCJul 25, 23:44 UTC4h 1m
2026-07-25 AAL791 AVL → DFW Jul 25, 14:25 UTCJul 25, 17:10 UTC2h 45m
2026-07-25 AAL791 AVL → DFW Jul 25, 14:23 UTCJul 25, 17:54 UTC3h 31m
2026-07-25 AAL3324 BOS → ORD Jul 25, 09:20 UTCJul 25, 11:40 UTC2h 20m
2026-07-24 AAL1074 PHL → CLT Jul 24, 23:10 UTCJul 25, 02:00 UTC2h 50m
2026-07-24 AAL960 PTY → MIA Jul 24, 19:10 UTCJul 24, 21:05 UTC1h 55m
2026-07-24 AAL960 PTY → MIA Jul 24, 18:32 UTCJul 24, 21:05 UTC2h 33m
2026-07-24 AAL411 PHX → MCO Jul 24, 14:20 UTCJul 24, 16:50 UTC2h 30m
2026-07-24 AAL411 PHX → MCO Jul 24, 14:17 UTCJul 24, 17:01 UTC2h 44m
2026-07-24 AAL1418 BOS → MIA Jul 24, 09:30 UTCJul 24, 12:20 UTC2h 50m
2026-07-24 AAL3107 PHL → BOS Jul 24, 00:50 UTCJul 24, 02:35 UTC1h 45m
2026-07-23 AAL1360 DCA → DFW Jul 23, 10:10 UTCJul 23, 12:00 UTC1h 50m
2026-07-23 AAL1669 MSY → DCA Jul 23, 01:55 UTCJul 23, 04:35 UTC2h 40m
2026-07-22 AAL2039 ORD → SFO Jul 22, 22:00 UTCJul 22, 22:45 UTC45m
2026-07-22 AAL2039 ORD → SFO Jul 22, 19:40 UTCJul 22, 20:25 UTC45m
2026-07-22 AAL1979 MCO → PHL Jul 22, 14:15 UTCJul 22, 15:45 UTC1h 30m
2026-07-22 AAL1979 MCO → PHL Jul 22, 14:12 UTCJul 22, 17:54 UTC3h 42m
2026-07-21 AAL1598 LAX → ORD Jul 21, 15:15 UTCJul 21, 19:00 UTC3h 45m
2026-07-20 AAL2301 CLT → BUF Jul 20, 22:40 UTCJul 21, 03:05 UTC4h 25m
2026-07-20 AAL2301 CLT → BUF Jul 20, 16:45 UTCJul 20, 21:05 UTC4h 20m
2026-07-20 AAL598 MSY → MIA Jul 20, 11:15 UTCJul 20, 14:55 UTC3h 40m
2026-07-19 AAL1255 - Jul 19, 23:50 UTCJul 20, 02:55 UTC3h 5m
2026-07-19 AAL1255 PHX → IND Jul 19, 23:46 UTCJul 20, 02:52 UTC3h 6m
2026-07-19 AAL896 - Jul 19, 18:15 UTCJul 19, 22:35 UTC4h 20m
2026-07-19 AAL969 - Jul 19, 15:20 UTCJul 19, 16:45 UTC1h 25m
2026-07-19 AAL969 CLT → MIA Jul 19, 15:16 UTCJul 19, 16:45 UTC1h 29m
2026-07-19 AAL1297 - Jul 19, 11:45 UTCJul 19, 13:30 UTC1h 45m
2026-07-19 AAL2267 DFW → MCI Jul 19, 03:00 UTCJul 19, 04:10 UTC1h 10m
2026-07-18 AAL1429 - Jul 18, 21:45 UTCJul 18, 23:50 UTC2h 5m
2026-07-18 AAL1429 - Jul 18, 18:30 UTCJul 18, 20:20 UTC1h 50m
2026-07-18 AAL1618 - Jul 18, 14:30 UTCJul 18, 17:05 UTC2h 35m
2026-07-18 AAL1618 DFW → DCA Jul 18, 10:10 UTCJul 18, 12:55 UTC2h 45m
2026-07-18 AAL2600 ORD → DFW Jul 18, 04:06 UTCJul 18, 05:55 UTC1h 49m
2026-07-18 AAL2600 ORD → DFW Jul 18, 04:10 UTCJul 18, 05:55 UTC1h 45m
2026-07-17 AAL1592 BOS → ORD Jul 17, 23:54 UTCJul 18, 02:36 UTC2h 42m
2026-07-17 AAL1592 BOS → ORD Jul 17, 23:55 UTCJul 18, 02:25 UTC2h 30m
2026-07-17 AAL3116 PHL → BNH Jul 17, 19:35 UTCJul 17, 20:29 UTC55m
2026-07-17 AAL2344 MIA → ORD Jul 17, 14:55 UTCJul 17, 18:00 UTC3h 5m
2026-07-17 AAL3158 - Jul 17, 00:10 UTCJul 17, 03:34 UTC3h 25m
2026-07-16 AAL3158 PHL → PHL Jul 16, 23:55 UTCJul 17, 00:04 UTC10m
2026-07-16 AAL1971 CUN → PHL Jul 16, 16:19 UTCJul 16, 19:40 UTC3h 20m
2026-07-16 AAL1752 PHL → CUN Jul 16, 11:20 UTCJul 16, 14:35 UTC3h 15m
2026-07-16 AAL1752 PHL → CUN Jul 16, 11:16 UTCJul 16, 14:33 UTC3h 17m
2026-07-16 AAL3247 - Jul 16, 00:15 UTCJul 16, 02:25 UTC2h 10m
2026-07-15 AAL3196 LGA → FLL Jul 15, 20:32 UTCJul 15, 22:57 UTC2h 25m

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 N977NN page for operator, model, and routing details .

Mode-S AD9EDF frequently asked

What is Mode-S code AD9EDF?
AD9EDF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N977NN.
Where is Mode-S AD9EDF registered?
Mode-S code AD9EDF 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 AD9EDF 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 AD9EDF, octal 53317337, decimal 11,378,399.
What flights does AD9EDF operate?
Mode-S AD9EDF has broadcast 20 distinct callsigns, including AAL2039, AAL2753, AAL2733, AAL3208, AAL2822.