98-13-08: Generator Cables

98-13-08 PILATUS AIRCRAFT LTD.: Amendment 39-10596; Docket No. 97-CE-08-AD. Applicability: Model PC-12 airplanes, serial numbers 101 through 147, certificated in any category. NOTE 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (f) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. Compliance: Required within the next 100 hours time-in-service (TIS)after the effective date of this AD, unless already accomplished. To prevent directional deviation on the standby magnetic compass caused by an overload of electrical current in the airplane structure, which could result in flight-path deviation during critical phases of flight in icing conditions and Instrument Meteorologic Conditions (IMC), accomplish the following: (a) Re-route and replace the starter generator cable and the generator 2 power return cables with new cables of improved design in accordance with the Accomplishment Instructions section in Pilatus PC XII Service Bulletin (SB) No. 24-002, Rev. No. 1, dated September 20, 1996. (b) Remove the temporary revision titled "Electrical Cables," dated March 7, 1996, from the Pilot Operating Handbook (POH) and insert a temporary revision titled "Electrical Cables" Rev. 1, dated July 12, 1996, in accordance with the Accomplishment Instructions section in Pilatus PC XII SB No. 24-002, Rev. No. 1, dated September 20, 1996. (c) Install a placard with the following words (using at least 1/8-inch letters) near the standby magnetic compass in accordance with the Accomplishment Instructions section in Pilatus PC XII SB No. 24-002, Rev. No. 1, dated September 20, 1996: "STANDBY COMPASS FOR CORRECT READING CHECK: WINDSHIELD DE-ICE LH & RH HEAVY & COOLING SYSTEM OFF." (d) Incorporating the POH revisions and installing a placard, as required by paragraphs (b) and (c) of this AD, may be performed by the owner/operator holding at least a private pilot certificate as authorized by section 43.7 of the Federal Aviation Regulations (14 CFR 43.7), and must be entered into the aircraft records showing compliance with this AD in accordance with section 43.9 of the Federal Aviation Regulations (14 CFR 43.9). (e) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. (f) An alternative method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Small Airplane Directorate, 1201 Walnut, suite 900, Kansas City, Missouri 64106. The request shall be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Small Airplane Directorate. NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Small Airplane Directorate. (g) Questions or technical information related to Pilatus PC XII SB No. 24-002, Rev. No. 1, dated September 20, 1996, should be directed to Pilatus Aircraft Ltd., Customer Liaison Manager, CH-6370 Stans, Switzerland; telephone: +41 41 6196 233; facsimile: +41 41 6103 351. This service information may be examined at the FAA, Central Region, Office of the Regional Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106. (h) The modification, replacement, insertion, and installation required by this AD shall be done in accordance with Pilatus PC XII Service Bulletin No. 24-002, Rev. No. 1, dated September 20, 1996. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Pilatus Aircraft Ltd., Customer Liaison Manager, CH-6370 Stans, Switzerland. Copies may be inspected at the FAA, Central Region, Office of the Regional Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 800 North Capitol Street, NW, suite 700, Washington, DC. NOTE 3: The subject of this AD is addressed in Swiss AD No. HB-96-140, dated March 18, 1996, and Swiss AD No. HB 97-001, dated January 1, 1997. (i) This amendment becomes effective on July 31, 1998.