In the ole ATPL(H) material Hydraulic Lock is described as different to Jack Stall- which if I remember correctly is a hydraulic force overload. Hydraulic Lock as I understood it from the ATPL(H) studies is a failure (design or mechanical) in which the hydraulic pressure gets around the back of the relevant actuator(s) and the controls become hydraulically 'locked'.
Definition of mourn - feel or show sorrow for the death of (someone), typically by following conventions such as the wearing of black clothes Definition of mourn - feel or show sorrow for the death of (someone), typically by following conventions such as the wearing of black clothes dictionary thesaurus
Blessed is the person who does not follow the advice of wicked people, take the path of sinners, or join the company of mockers. JPS Tanakh 1917. HAPPY IS the man that hath not walked in the counsel of the wicked, Nor stood in the way of sinners, Nor sat in the seat of the scornful.