Section 145.221 - Service difficulty reports(a) A certificated repair station must report to the FAA within 96 hours after it discovers any serious failure, malfunction, or defect of an article. The report must be in a format acceptable to the FAA.(b) The report required under paragraph (a) of this section must include as much of the following information as is available:(1) Aircraft registration number;(2) Type, make, and model of the article;(3) Date of the discovery of the failure, malfunction, or defect;(4) Nature of the failure, malfunction, or defect;(5) Time since last overhaul, if applicable;(6) Apparent cause of the failure, malfunction, or defect; and(7) Other pertinent information that is necessary for more complete identification, determination of seriousness, or corrective action.(c) The holder of a repair station certificate that is also the holder of a part 121, 125, or 135 certificate; type certificate (including a supplemental type certificate); parts manufacturer approval; or technical standard order authorization, or that is the licensee of a type certificate holder, does not need to report a failure, malfunction, or defect under this section if the failure, malfunction, or defect has been reported under parts 21, 121, 125, or 135 of this chapter.(d) A certificated repair station may submit a service difficulty report for the following:(1) A part 121 certificate holder, provided the report meets the requirements of part 121 of this chapter, as appropriate.(2) A part 125 certificate holder, provided the report meets the requirements of part 125 of this chapter, as appropriate.(3) A part 135 certificate holder, provided the report meets the requirements of part 135 of the chapter, as appropriate.(e) A certificated repair station authorized to report a failure, malfunction, or defect under paragraph (d) of this section must not report the same failure, malfunction, or defect under paragraph (a) of this section. A copy of the report submitted under paragraph (d) of this section must be forwarded to the certificate holder.Doc. No. FAA-1999-5836, 66 FR 41117 , Aug. 6, 2001, as amended by Amdt. 22, 68 FR 75382 , Dec. 30, 2003; Amdt. 145-26, 70 FR 76979 , Dec. 29, 2005; Amdt. 145-30, 79 FR 46985 , Aug. 12, 2014; Amdt. 145-30A, 79 FR 66607 , Nov. 10, 2014