Bug: Label_2P_FM3 / FM4 / FM5 missing-header guard is dead (split.length is never 0); FM3 then throws on header[1].length, FM4/FM5 emit undefined fields

Bug: arinc_702_helper.processDateCode computes a swapped DDMMYY→MMDDYY date and then never uses it (likely missing NaN fallback)

Cleanup: README.md contains leftover scratch text "no-op documentation tweak"

Cleanup: result_formatter has stray leading space in code ' FUEL_REM' and number→string type bugs

Bug: flight_plan_utils.parseHeader RP branch overwrites route_status with the full header

Bug: MessageDecoder.decode discards default failure result when no plugin decodes

Bug: DateTimeUtils.UTCToString returns local time despite the "UTC" name (also: deprecated substr)

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Deode Label H1 /.POS

Decode label 58