So I don't know how this slipped by, but #Metrolink 's Arrow service is suspended until further notice because the #DMU's airbrakes are out of federal compliance?? WTF?!
"...the air brake maintenance on all three operating Arrow Diesel Multiple Units (DMUs) is out of federal compliance, rendering all three sets inoperable per regulation. Unfortunately, as a result, beginning tomorrow, Friday, Aug. 2, Arrow service will be suspended until further notice."