Apparatus

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sensors Mode-S transponder

AB249D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N817NV · BOEING 737 MAX 8 · operated by ALLEGIANT AIR LLC

Hex
AB249D
Octal
52622235
Decimal
11,216,029
Country
US
Tail
N817NV
Type
B38M
No current signal · last broadcast Jul 26, 20:10 UTC
Flights observed
348
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:10 UTC

Last known position

Most recent position reported by Mode-S AB249D.

Country allocation

The ICAO 24-bit address AB249D 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
AAY3483 - 8 2026-07-11
AAY3482 - 8 2026-07-11
AAY534 - 6 2026-07-15
AAY481 Allegiant Air 6 2026-06-12
AAY524 - 5 2026-06-28
AAY516 Allegiant Air 5 2026-07-25
AAY512 Allegiant Air 5 2026-07-26
AAY502 Allegiant Air 5 2026-06-13
AAY3487 Allegiant Air 5 2026-07-20
AAY3486 Allegiant Air 5 2026-07-19
AAY3477 - 5 2026-07-09
AAY3475 Allegiant Air 5 2026-07-23
AAY3474 Allegiant Air 5 2026-07-23
AAY533 - 4 2026-07-01
AAY513 - 4 2026-06-28
AAY509 - 4 2026-07-17
AAY507 - 4 2026-07-10
AAY504 Allegiant Air 4 2026-07-25
AAY503 - 4 2026-06-28
AAY3476 - 4 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAY526 SDF → FLL Jul 26, 17:50 UTCJul 26, 20:10 UTC2h 20m
2026-07-26 AAY512 FLL → PIA Jul 26, 14:15 UTCJul 26, 16:20 UTC2h 5m
2026-07-26 AAY2152 USA → FLL Jul 26, 10:50 UTCJul 26, 12:50 UTC2h 0m
2026-07-25 AAY490 TYS → FLL Jul 25, 21:30 UTCJul 26, 00:00 UTC2h 30m
2026-07-25 AAY504 FLL → BGR Jul 25, 17:40 UTCJul 25, 20:15 UTC2h 35m
2026-07-25 AAY516 BLI → OAK Jul 25, 14:20 UTCJul 25, 16:10 UTC1h 50m
2026-07-25 AAY2118 FLL → IND Jul 25, 11:00 UTCJul 25, 13:00 UTC2h 0m
2026-07-25 AAY3479 ROC → FLL Jul 25, 01:10 UTCJul 25, 03:55 UTC2h 45m
2026-07-24 AAY3478 FLL → ROC Jul 24, 21:05 UTCJul 24, 23:50 UTC2h 45m
2026-07-24 AAY3485 MEM → FLL Jul 24, 15:25 UTCJul 24, 17:40 UTC2h 15m
2026-07-24 AAY3484 FLL → MEM Jul 24, 11:50 UTCJul 24, 14:05 UTC2h 15m
2026-07-24 AAY2128 FLL → SWF Jul 24, 01:15 UTCJul 24, 03:25 UTC2h 10m
2026-07-23 AAY531 FLL → PBG Jul 23, 21:35 UTCJul 23, 23:55 UTC2h 20m
2026-07-23 AAY3475 ACY → FLL Jul 23, 16:55 UTCJul 23, 20:00 UTC3h 5m
2026-07-23 AAY3474 FLL → ACY Jul 23, 12:20 UTCJul 23, 14:50 UTC2h 30m
2026-07-21 AAY243 EWR → AVL Jul 21, 05:10 UTCJul 21, 06:40 UTC1h 30m
2026-07-21 AAY217 EWR → AVL Jul 21, 02:45 UTCJul 21, 04:10 UTC1h 25m
2026-07-20 AAY3481 SYR → FLL Jul 20, 23:25 UTCJul 21, 01:15 UTC1h 49m
2026-07-20 AAY3480 FLL → SYR Jul 20, 19:15 UTCJul 20, 21:15 UTC2h 0m
2026-07-20 AAY3485 MEM → FLL Jul 20, 15:15 UTCJul 20, 17:25 UTC2h 10m
2026-07-20 AAY3484 FLL → MEM Jul 20, 11:35 UTCJul 20, 13:50 UTC2h 15m
2026-07-20 AAY497 FLL → USA Jul 20, 04:40 UTCJul 20, 06:50 UTC2h 10m
2026-07-20 AAY3487 RFD → FLL Jul 20, 00:45 UTCJul 20, 01:50 UTC1h 5m
2026-07-19 AAY3486 FLL → RFD Jul 19, 22:05 UTCJul 19, 23:10 UTC1h 5m
2026-07-19 AAY526 SDF → FLL Jul 19, 18:25 UTCJul 19, 20:55 UTC2h 30m
2026-07-19 AAY512 - Jul 19, 14:50 UTCJul 19, 16:50 UTC2h 0m
2026-07-19 AAY2152 USA → FLL Jul 19, 11:15 UTCJul 19, 13:10 UTC1h 55m
2026-07-18 AAY490 TYS → FLL Jul 18, 22:05 UTCJul 19, 00:45 UTC2h 40m
2026-07-18 AAY504 - Jul 18, 17:45 UTCJul 18, 20:15 UTC2h 30m
2026-07-17 AAY509 - Jul 17, 22:10 UTCJul 18, 01:30 UTC3h 20m
2026-07-17 AAY2125 TYS → FLL Jul 17, 17:55 UTCJul 17, 20:44 UTC2h 50m
2026-07-16 AAY2130 TYS → FLL Jul 16, 22:40 UTCJul 17, 00:45 UTC2h 5m
2026-07-16 AAY501 FLL → BGR Jul 16, 18:59 UTCJul 16, 21:19 UTC2h 20m
2026-07-16 AAY494 - Jul 16, 14:55 UTCJul 16, 17:35 UTC2h 40m
2026-07-16 AAY491 - Jul 16, 10:50 UTCJul 16, 13:30 UTC2h 40m
2026-07-15 AAY2140 - Jul 15, 21:55 UTCJul 16, 00:35 UTC2h 40m
2026-07-15 AAY534 - Jul 15, 17:40 UTCJul 15, 20:15 UTC2h 35m
2026-07-15 AAY521 - Jul 15, 14:40 UTCJul 15, 16:15 UTC1h 35m
2026-07-15 AAY487 - Jul 15, 11:50 UTCJul 15, 13:25 UTC1h 35m
2026-07-14 AAY523 - Jul 14, 00:15 UTCJul 14, 03:00 UTC2h 45m
2026-07-13 AAY2134 - Jul 13, 20:40 UTCJul 13, 23:05 UTC2h 25m
2026-07-13 AAY2142 - Jul 13, 17:00 UTCJul 13, 19:10 UTC2h 10m
2026-07-13 AAY532 - Jul 13, 13:20 UTCJul 13, 15:30 UTC2h 10m
2026-07-13 AAY530 CAK → FLL Jul 13, 00:40 UTCJul 13, 03:10 UTC2h 30m
2026-07-12 AAY535 - Jul 12, 21:05 UTCJul 12, 23:20 UTC2h 15m
2026-07-12 AAY3471 - Jul 12, 16:40 UTCJul 12, 19:30 UTC2h 50m
2026-07-12 AAY3470 - Jul 12, 12:25 UTCJul 12, 15:10 UTC2h 45m
2026-07-11 AAY3483 - Jul 11, 21:35 UTCJul 11, 23:40 UTC2h 5m
2026-07-11 AAY3487 - Jul 11, 19:00 UTCJul 11, 20:10 UTC1h 10m
2026-07-11 AAY3486 - Jul 11, 16:25 UTCJul 11, 17:25 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 N817NV page for operator, model, and routing details .

Mode-S AB249D frequently asked

What is Mode-S code AB249D?
AB249D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N817NV.
Where is Mode-S AB249D registered?
Mode-S code AB249D 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 AB249D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB249D, octal 52622235, decimal 11,216,029.
What flights does AB249D operate?
Mode-S AB249D has broadcast 20 distinct callsigns, including AAY3483, AAY3482, AAY534, AAY481, AAY524.