This AMC replaces FAA AC 29-2C, § AC 29.1301 and should be used when showing compliance with CS 29.1301.
(a) Explanation
It should be emphasised that CS 29.1301 applies to each item of installed equipment which includes optional equipment as well as required equipment.
(b) Procedures
(1) Information regarding installation limitations and proper functioning is normally available from the equipment manufacturers in their installation and operation manuals. In addition, some other paragraphs in FAA AC 29-2C include criteria for evaluating proper functioning of particular systems — an example is § AC 29 MG 1 for avionics equipment.
(2) CS 29.1301 is quite specific in that it applies to each item of installed equipment. It should be emphasised, however, that even though a general rule as CS 29.1301 is relevant, a rule that gives specific functional requirements for a particular system will prevail over a general rule. Therefore, if a rule exists that defines specific system functioning requirements, its provisions should be used to evaluate the acceptability of the installed system and not the provisions of this general rule. It should also be understood that an interpretation of a general rule should not be used to lessen or increase the requirements of a specific rule. CS 29.1309 is another example of a general rule, and this discussion is appropriate when applying its provisions.
(3) If optional equipment is installed, the crew may be expected to use it. This may be the case of navigation capabilities (as, for instance, LPV capability) installed on VFR rotorcraft. Therefore, the applicant should define the optional equipment and demonstrate that it complies with CS 29.1301 for its intended function. In addition, the applicant should ensure that the optional equipment does not interfere with the other systems that are required for safe operation of the rotorcraft and that its failure modes are acceptable and do not create any hazards.
AMC1 29.1301 explains that CS 29.1301 applies to all installed equipment, including optional items. It guides compliance, prioritises specific rules over general ones, and requires optional equipment to be defined, non‑h
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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