Pocket 429 Support

Decode and build ARINC 429 words on your phone.

Conventions the app uses

• A word is written as 8 hex digits with bit 1 as the least significant bit. The label byte therefore reads bit-reversed: label 203 shows as C1. Turn on "Label byte readable" if your analyzer shows 83 instead.
• Fields: label 1–8, SDI 9–10, data 11–29, SSM 30–31, parity 32 (odd).
• Label meanings follow the general ARINC 429 assignments and vary by equipment. Always confirm against the source LRU's ICD. You can save your own defaults per label.

Scan tips

• Fill the frame with the rows, keep the phone square to the screen, avoid glare.
• Light text on a dark screen is detected automatically; the switch forces it.
• Green means parity OK, known label, nothing guessed. Amber means check it: a character was repaired, the label is not in the table, or the value or SSM does not fit the label (for example No Computed Data, or a minus sign on a ground speed). Red means parity fails or the analyzer's label column disagrees.

Try these words

6445C0C1 altitude 35000 ft on label 203 · FE3C00D1 −56.5 °C on label 213 · 01140050 ground speed 450 kt (BCD) on label 012 · 32414C37 the text "LA2" on label 354.

Contact

Bug reports, wrong label entries, feature requests: support@dillongreen.dev. If a label decodes wrongly, include the word, the source equipment and what the ICD says.

Pocket 429 is a bench, simulator and training reference. It is not approved maintenance data. Privacy policy