Apparatus

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sensors Mode-S transponder

A61FA4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N494HA · BOEING 717-200 · operated by HAWAIIAN AIRLINES INC

Hex
A61FA4
Octal
51417644
Decimal
10,887,076
Country
US
Tail
N494HA
Type
B712
No current signal · last broadcast Jul 26, 20:30 UTC
Flights observed
759
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:30 UTC

Last known position

Most recent position reported by Mode-S A61FA4.

Country allocation

The ICAO 24-bit address A61FA4 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
ASA1095 - 12 2026-07-17
ASA1136 Alaska Airlines 11 2026-07-23
ASA1087 Alaska Airlines 11 2026-07-23
ASA1030 Alaska Airlines 11 2026-07-22
ASA1022 Alaska Airlines 11 2026-07-25
ASA1018 - 11 2026-07-17
ASA1153 Alaska Airlines 10 2026-07-24
ASA1086 Alaska Airlines 10 2026-07-22
ASA1040 - 10 2026-07-17
ASA1029 - 10 2026-07-17
ASA1260 Alaska Airlines 9 2026-07-25
ASA1259 - 9 2026-07-18
ASA1250 Alaska Airlines 9 2026-07-25
ASA1216 Alaska Airlines 9 2026-07-25
ASA1155 Alaska Airlines 9 2026-07-23
ASA1073 Alaska Airlines 9 2026-07-25
ASA1053 - 9 2026-07-24
ASA1021 Alaska Airlines 9 2026-07-25
ASA1005 Alaska Airlines 9 2026-07-25
ASA1269 - 8 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASA1043 SFO → SEA Jul 26, 20:20 UTCJul 26, 20:30 UTC10m
2026-07-26 ASA1013 SAN → PDX Jul 26, 17:25 UTCJul 26, 17:35 UTC10m
2026-07-25 ASA1067 SFO → SEA Jul 25, 22:40 UTCJul 25, 23:05 UTC25m
2026-07-25 ASA1068 PVR → SFO Jul 25, 21:20 UTCJul 25, 21:45 UTC25m
2026-07-25 ASA1021 MCO → SAN Jul 25, 19:55 UTCJul 25, 20:20 UTC25m
2026-07-25 ASA1022 SFO → JFK Jul 25, 18:20 UTCJul 25, 18:45 UTC25m
2026-07-25 ASA1005 SAN → SFO Jul 25, 16:05 UTCJul 25, 16:25 UTC20m
2026-07-25 ASA1216 SEA → SMF Jul 25, 07:20 UTCJul 25, 07:35 UTC15m
2026-07-25 ASA1137 SAN → SEA Jul 25, 03:35 UTCJul 25, 04:05 UTC30m
2026-07-25 ASA1250 PDX → SJC Jul 25, 02:40 UTCJul 25, 02:55 UTC15m
2026-07-25 ASA1260 SFO → SEA Jul 25, 01:25 UTCJul 25, 01:45 UTC20m
2026-07-25 ASA1073 SAN → PDX Jul 25, 00:05 UTCJul 25, 00:15 UTC10m
2026-07-24 ASA1053 - Jul 24, 21:05 UTCJul 24, 21:15 UTC10m
2026-07-24 ASA1023 PSC → SEA Jul 24, 18:15 UTCJul 24, 18:25 UTC10m
2026-07-24 ASA1153 LAX → OGG Jul 24, 05:00 UTCJul 24, 05:10 UTC10m
2026-07-24 ASA1113 SFO → SEA Jul 24, 02:35 UTCJul 24, 02:45 UTC10m
2026-07-24 ASA1051 SFO → SEA Jul 24, 01:00 UTCJul 24, 01:30 UTC30m
2026-07-23 ASA1052 SEA → BUR Jul 23, 23:25 UTCJul 23, 23:45 UTC20m
2026-07-23 ASA1057 BUR → PDX Jul 23, 21:25 UTCJul 23, 22:00 UTC35m
2026-07-23 ASA1058 PDX → LAX Jul 23, 20:05 UTCJul 23, 20:35 UTC30m
2026-07-23 ASA1035 SAN → SEA Jul 23, 18:40 UTCJul 23, 19:00 UTC20m
2026-07-23 ASA1026 HNL → OGG Jul 23, 17:10 UTCJul 23, 17:30 UTC20m
2026-07-23 ASA1143 PDX → LAX Jul 23, 04:30 UTCJul 23, 04:40 UTC10m
2026-07-23 ASA1155 SNA → SEA Jul 23, 03:15 UTCJul 23, 03:30 UTC15m
2026-07-23 ASA1136 SJC → PDX Jul 23, 01:55 UTCJul 23, 02:10 UTC15m
2026-07-23 ASA1087 ONT → SEA Jul 23, 00:20 UTCJul 23, 00:55 UTC35m
2026-07-22 ASA1030 SEA → BZN Jul 22, 23:10 UTCJul 22, 23:25 UTC15m
2026-07-22 ASA1086 SEA → ONT Jul 22, 21:45 UTCJul 22, 22:05 UTC20m
2026-07-21 ASA1005 SAN → SFO Jul 21, 16:10 UTCJul 21, 16:25 UTC15m
2026-07-21 ASA1216 SEA → SMF Jul 21, 10:55 UTCJul 21, 11:15 UTC20m
2026-07-21 ASA1157 SAN → SEA Jul 21, 04:45 UTCJul 21, 05:15 UTC30m
2026-07-21 ASA1120 LAX → SEA Jul 21, 03:35 UTCJul 21, 04:00 UTC25m
2026-07-21 ASA1269 - Jul 21, 02:05 UTCJul 21, 02:25 UTC20m
2026-07-21 ASA1126 - Jul 21, 01:00 UTCJul 21, 01:15 UTC15m
2026-07-20 ASA1125 SFO → PDX Jul 20, 23:20 UTCJul 20, 23:35 UTC15m
2026-07-20 ASA1096 PDX → SFO Jul 20, 21:55 UTCJul 20, 22:15 UTC20m
2026-07-20 ASA1037 ZLO → LAX Jul 20, 19:55 UTCJul 20, 20:30 UTC35m
2026-07-20 ASA1048 SAN → BOS Jul 20, 18:40 UTCJul 20, 19:05 UTC25m
2026-07-20 ASA1003 - Jul 20, 16:10 UTCJul 20, 16:20 UTC10m
2026-07-20 ASA1153 - Jul 20, 05:05 UTCJul 20, 05:15 UTC10m
2026-07-20 ASA1113 - Jul 20, 02:35 UTCJul 20, 02:45 UTC10m
2026-07-20 ASA1097 SAN → SEA Jul 20, 01:05 UTCJul 20, 01:35 UTC30m
2026-07-19 ASA1108 SEA → SAN Jul 19, 23:40 UTCJul 20, 00:05 UTC25m
2026-07-19 ASA1031 BZN → SEA Jul 19, 21:50 UTCJul 19, 22:15 UTC25m
2026-07-19 ASA1032 PDX → SEA Jul 19, 20:20 UTCJul 19, 20:40 UTC20m
2026-07-19 ASA1045 - Jul 19, 18:45 UTCJul 19, 19:05 UTC20m
2026-07-19 ASA1036 - Jul 19, 17:35 UTCJul 19, 17:55 UTC20m
2026-07-19 ASA1173 - Jul 19, 07:30 UTCJul 19, 07:45 UTC15m
2026-07-19 ASA1111 - Jul 19, 06:00 UTCJul 19, 06:30 UTC30m
2026-07-19 ASA1102 - Jul 19, 04:30 UTCJul 19, 04:55 UTC25m

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 N494HA page for operator, model, and routing details .

Mode-S A61FA4 frequently asked

What is Mode-S code A61FA4?
A61FA4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N494HA.
Where is Mode-S A61FA4 registered?
Mode-S code A61FA4 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 A61FA4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A61FA4, octal 51417644, decimal 10,887,076.
What flights does A61FA4 operate?
Mode-S A61FA4 has broadcast 20 distinct callsigns, including ASA1095, ASA1136, ASA1087, ASA1030, ASA1022.