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
desâ²oâ¢lat`er, desâ²oâ¢la`tor, n. lonely, lonesome, forlorn, desolate - Lonely adds to solitary a suggestion of longing for companionship, while lonesome heightens the suggestion of sadness; forlorn and desolate are even more isolated and sad.