14 C.F.R. § 25.623 Bearing factors.
Title 14 - Aeronautics and Space
(a) Except as provided in paragraph (b) of this section, each part that has clearance (free fit), and that is subject to pounding or vibration, must have a bearing factor large enough to provide for the effects of normal relative motion. (b) No bearing factor need be used for a part for which any larger special factor is prescribed.
Title 14: Aeronautics and Space
PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
Subpart D—Design and Construction
General
§ 25.623 Bearing factors.