(1)
Is necessary for propulsion;
(2)
A.ectsthe control of the majorpropulsive units; or
(3)
A.ectsthe safety of the majorpropulsiveunitsbetween normalinspections or overhauls.
(b)
For each powerplant installation–
(1)
The installation must comply with–
(i)
TheinstallationinstructionsprovidedunderSec.33.5 of this chapter; and
(ii)
The applicable provisions of this subpart.
(2)
Each component of the installation must be constructed, arranged, and ins-talled to ensure its continued safe operation between normal inspections or overhauls for the range of temperature and altitude for which approval is requested.
(3)
Accessibility must be provided to allow any inspection and maintenance ne-cessary for continued airworthiness;
(4)
Electricalinterconnections mustbeprovidedtopreventdi.erences ofpotential between major components of the installation and the rest of the rotorcraft; and
(5)
Axial and radial expansion of turbine engines may not a.ect the safety of the installation.
(6)
Design precautions must be taken to minimize the possibility of incorrect as-sembly of components and equipment essential to safe operation of the rotor-craft, except where operation with the incorrect assembly can be shown to be extremely improbable.
(c)
[For each powerplant and auxiliary power unit installation, it must be established that no singlefailure or malfunction orprobable combination offailures willjeo-pardize the safe operation of the rotorcraft except that the failure of structural elements need not be considered if the probability of any such failure is extremely remote.]
(d)
Each auxiliary power unit installation must meet the applicable provisions of this subpart.
Amdt. 29-36, E.. 1/31/96
FAR 29.903 : Engines.
(a)
Engine type certi.cation. Each engine must have an approved type certi.cate. Reci-procating engines for use in helicopters must be quali.ed in accordance with Sec. 33.49(d) of this chapter or be otherwise approved for the intended usage.
(b)
Category A : Engine isolation. For each category A rotorcraft, the powerplants must be arranged and isolated from each other to allow operation, in at least one con.guration, so that the failure or malfunction of any engine, or the failure of any system that can a.ect any engine, will not–
(1)
Preventthe continued safe operation of the remaining engines; or
(2)
Require immediate action, other than normal pilot action with primary .ight controls, by any crewmember to maintain safe operation.
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本文链接地址：FAA规章 美国联邦航空规章 Federal Aviation Regulations 5(58)
