4N.md

Label: 4N

Description

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Examples

Fixed Length

https://globe.adsbexchange.com/?icao=A15027&showTrace=2024-09-23&timestamp=1727057017
22024N  MCI  JFK1
0013  0072 N040586 W074421   230

https://globe.adsbexchange.com/?icao=AC74F9&showTrace=2024-09-23&timestamp=1727094283
23124N  CVG  EWR1
0007  0043 N040371 W074302   047

https://globe.adsbexchange.com/?icao=A15027&showTrace=2024-09-23&timestamp=1727097947
23134N  JFK  YYZ1
0043  0098 N041266 W074266   242

https://globe.adsbexchange.com/?icao=ACE1AF&showTrace=2024-09-23&timestamp=1727107616
23164N  CLE  JFK1
0019  0070 N041109 W075251   230

https://globe.adsbexchange.com/?icao=A15027&showTrace=2024-09-23&timestamp=1727108317
23164N  YYZ  JFK1
0009  0052 N040541 W074053   185

Start Index	End Index	Raw Value	Description
0	1	22	Day of month
2	3	02	Unknown
4	5	4N	Message Label
8	10	MCI	Origin Airport Code
13	15	JFK	Destination Airport Code
16	16	1	Constant?
19	22	0013	Unknown
25	28	0072	Unknown
30	30	N	Latitude direction
31	33	040	Latitude degrees
34	36	586	Latitude minutes (tenths)
38	38	W	Longitude direction
39	41	074	Longitude degrees
42	44	421	Longitude minutes (tenths)
48	50	230	Flight Level (100s of feet)

Comma Separated

https://app.airframes.io/messages/3421601874
285,B,69005074-507,10/12,+36.081,-094.810,35014,002.3,ELP,SDF,SDF,17R/,17L/,0,0,,,,,,0,0,0,0,1,,,,,247.0,014.2,261.2,421A

https://globe.adsbexchange.com/?icao=A3E08D&showTrace=2024-09-24&timestamp=1727181643
285,C,,09/24,,,,,EWR,PHL,PHL,09R/,/,0,0,,,,,,1,0,0,0,1,0,,0,0,198.5,014.5,213.0,9BCD

https://globe.adsbexchange.com/?icao=A504DD&showTrace=2024-09-25&timestamp=1727248935
285,C,,09/25,,,,,PHL,ALB,ALB,19/,01/,0,0,,,,,,1,0,0,0,1,0,,0,0,140.4,021.7,162.1,ED80

https://globe.adsbexchange.com/?icao=A39F0D&showTrace=2024-09-27&timestamp=1727442533
285,C,,09/27,,,,,EWR,PHL,PHL,09R/,/,1,0,,,,,,1,0,0,0,1,0,,0,0,223.8,017.7,241.5,518A

https://app.airframes.io/messages/3422221702
M85AUP0109285,C,,10/12,,,,,NRT,ANC,ANC,07R/,33/,0,0,,,,,,0,0,0,0,1,0,,0,0,709.8,048.7,758.5,75F3

Comma separated fields in the first example:

Field Number	Value	Description
0	285	Unknown, seems to be constant
1	B	Message Subtype?
2	69005074-507	Unknown, seems constant for subtype B
3	09/24	Date
4	+36.081	Latitude
5	-094.810	Longitude
6	35014	Altitude
7	002.3	Unknown
8	ELP	Origin airport
9	SDF	Destination Airport
10	SDF	Alternate Destination Airport
11	17R/	Destination Airport Runway Assignment
12	17L/	Alternate Destination Airport Runway Assignment?
Multiple	0 or 1	Several unknown boolean(?) values
29	247.0	Unknown
30	014.2	Unknown
31	261.2	Unknown
32	421A	CRC?

Which fields are populated seem to depend on the subtype.

Acronyms / Codes

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Analysis

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