14 C.F.R. § 25.1167 Accessory gearboxes.
Title 14 - Aeronautics and Space
For airplanes equipped with an accessory gearbox that is not certificated as part of an engine— (a) The engine with gearbox and connecting transmissions and shafts attached must be subjected to the tests specified in §33.49 or §33.87 of this chapter, as applicable; (b) The accessory gearbox must meet the requirements of §§33.25 and 33.53 or 33.91 of this chapter, as applicable; and (c) Possible misalignments and torsional loadings of the gearbox, transmission, and shaft system, expected to result under normal operating conditions must be evaluated. [Amdt. 25–38, 41 FR 55467, Dec. 20, 1976]
Title 14: Aeronautics and Space
PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
Subpart E—Powerplant
Powerplant Controls and Accessories
§ 25.1167 Accessory gearboxes.
