StacksVerified U.S. regulatory reference

14 CFR §25.619

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The factor of safety prescribed in § 25.303 must be multiplied by the highest pertinent special factor of safety prescribed in §§ 25.621 through 25.625 for each part of the structure whose strength is—
  1. (a)Uncertain;
  2. (b)Likely to deteriorate in service before normal replacement; or
  3. (c)Subject to appreciable variability because of uncertainties in manufacturing processes or inspection methods.