(1)
There must be a secondary heat exchanger between the primary exhaust gas heat exchanger andthe ventilating air system; or
(2)
Other means must be used to preclude the harmful contamination of the ven-tilating air.
Amdt. 25-38, E.. 2/1/77
FAR 25.1127 : Exhaust driven turbo-superchargers.
(a)
Each exhaust driven turbo-supercharger must be approved or shown to be suitable for the particular application. It must be installed and supported to ensure safe operation between normal inspections and overhauls. In addition, there must be provisions for expansion and .exibility between exhaust conduits and the turbine.
(b)
There must be provisions for lubricating the turbine and for cooling turbine parts where temperatures are critical.
(c)
If the normal turbo-supercharger control system malfunctions, the turbine speed may not exceed its maximum allowable value. Except for the waste gate opera-ting components, the components provided for meeting this requirement must be independent of the normal turbo-supercharger controls.
48.8 Powerplant Controls and Accessories
FAR 25.1141 : Powerplant controls : general.
Eachpowerplant control mustbelocated, arranged,anddesigned underSecs.25.777 through 25.781 and marked under Sec. 25.1555. In addition, it must meet the following requirements :
(a)
Each control mustbe located so that it cannotbe inadvertently operatedbypersons entering, leaving, or moving normally in, the cockpit.
(b)
Each .exible control must be approved or must be shown to be suitable for the particular application.
(c)
Each control must have su.cient strength and rigidity to withstand operating loads without failure and without excessive de.ection.
(d)
Each control must be able to maintain any set position without constant attention by .ight crewmembers and without creep due to control loads or vibration.
(e)
[The portion of each powerplant control located in a designated .re zone that is required to be operated in the event of .re must be at least .re resistant.]
(f)
Powerplant valve controls located in the cockpit must have–
(1)
For manual valves, positive stops or in the case of fuel valves suitable index provisions, in the open and closed position; and
(2)
For power-assisted valves, a means to indicate to the .ight crew when the valve–
(i) Isinthefully open orfully closedposition; or
(ii)
Is moving between the fully open and fully closed position. Amdt. 25-72, E.. 8/20/90
FAR25.1142 :[Auxiliarypower unit controls.]
[Means must be provided on the .ight deck for starting, stopping, and emergency shutdown of eachinstalled auxiliarypower unit.] Amdt. 25-46, E.. 12/1/78
FAR 25.1143 : Engine controls.
(a)
There must be a separate power or thrust control for each engine.
(b)
Power and thrust controls must be arranged to allow–
(1)
Separate control of each engine; and
(2)
Simultaneous control of all engines.
(c)
Each power and thrust control must provide a positive and immediately responsive means of controlling its engine.
(d)
[Foreach .uidinjection(otherthanfuel)systemanditscontrolsnotprovided and approvedaspart oftheengine,theapplicant must showthatthe .owoftheinjection .uid is adequately controlled.]
(e)
If a power or thrust control incorporates a fuel shuto. feature, the control must have a means to prevent the inadvertent movement of the control into the shuto. position. The means must–
′
Elodie Roux. Septembre 2003
Subpart E : Powerplant
(1)
Have apositivelock or stop attheidleposition; and
(2)
Require a separate and distinct operation to place the control in the shuto. position.
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本文链接地址：FAA规章 美国联邦航空规章 Federal Aviation Regulations 4(7)
