Beech 90 Series

  TTP B1-L3 ATA 29A Beech 90 Series B2-L3 Hydraulic Power – Monitoring and indicating Hydraulic Fluid Low-Level Sensor A h ydraulic fluid l o w-l e v el sensor is on the motor end of the p o w e r pack. A HYD FLUID LO annu n - ciator illuminates w hen a l o w fluid e xists . Engine b leed ai r , r e gulated to 18 to 20 psi, is plumbed into the fill rese r v oir to pr e v ent c a vit a tion of the pump.          A y ell o w HYD FLUID LO annunciator on the glare shield illuminates w hen the h ydraulic fluid in the seconda r y rese r v oir becomes l o w . An   optical   sensing   unit   on   the   motor end of the p o w e r pack contains the light source, senso r ,   and   s witching   circuit r y   to   trigger   the fluid   l o w   annunciato r .   The ...

  TTP B1-L3 ATA 29 Beech 90 Series B2-L2 Hydraulic Power An electrical l y-controlled h ydraulic p o w e r pack e xtends and retracts the main and nose landing gear assem b lies. The landing gear assem b lies comprise the foll o wing: •   Hydraulic p o w e r pack •   T ubing •   Rese r v oir •   Hydraulic actuators •   Bra k e system •   Accumulator •   Hydraulic fluid l e v el sensor system           Th e mai n an d nos e landin g gea r assem b lies e xten d an d retrac t h ydraulical l y . Prima r y com - ponent s o f th e  landin g gea r h ydrauli c system includ e a h ydrauli c p o w e r pac k an d h ydraulic actuator s o n eac h landin g gea r . Po w e r pac k pres sur e no r mal l y dr i v e s th e h ydrauli c actuators.         Three h ydraulic lines supp l y pressure to the nose ...

  TTP B1-L3 ATA 28 Beech 90 Series B2-L2 Fuel Systems GENERAL   Fuel is stored in nacelle and inte r connected wing tanks on each side of the ai r plane. The engines dr a w fuel from the nacelle tanks, w hich are fed  from the wing center section and outboard tanks. A crossfeed system all o ws the fuel system on one side to feed the engine on the other side. DESCRIPTION   The independent right and left fuel systems consist of three fuel cells in the outer wing panel, one cell in the center wing inboard of the nacelle, and one cell in the nacelle. All of the tanks are of the r ubbe r - b ladde r -type. Fuel g r a vity feeds from the outer wing tanks into the center wing tank w here the electric transfer pump sends fuel to the nacelle tank. The engine is supplied fuel from the subme r ged boost pump in the bot- tom of the na...