49 C.F.R. § 230.110 Pilots.
Title 49 - Transportation
(a) General provisions. Pilots shall be securely attached, properly braced, and maintained in a safe and suitable condition for service. (b) Minimum and maximum clearance. The minimum clearance of pilot above the rail shall be 3 inches and the maximum clearance shall be 6 inches measured on tangent level track.
Title 49: Transportation
PART 230—STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS
Subpart C—Steam Locomotives and Tenders
Trucks, Frames and Equalizing System
§ 230.110 Pilots.
