Airworthiness directives › 98-20-15
AD 98-20-15 Airworthiness Directives; Saab Model SAAB 340B Series Airplanes
Models named: SAAB 340B series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model SAAB 340B series airplanes, manufacturer serial numbers 380 through 499 inclusive; 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 (b) 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 as indicated, unless accomplished previously. To prevent a short circuit caused by fluid leakage, which could result in inability to retract the landing gear or require the use of emergency extension, accomplish the following: (a) Within 400 flight hours after the effective date of this AD, accomplish the actions required by paragraphs (a)(1), (a)(2), (a)(3), and (a)(4) of this AD, in accordance with Saab Service Bulletin 340-32-115, dated April 7, 1998, or Revision 01, dated August 12, 1998. As of the effective date of this AD, Revision 01 of the service bulletin shall be used. (1) Perform a detailed visual inspection to detect moisture or other contamination of the electrical wiring harness above relay consoles 305VU and 306VU. If any moisture or other contamination is found, prior to further flight, clean the wiring harness. (2) Perform a detailed visual inspection to detect moisture or other contamination of electrical relay 15GA and its socket. If any moisture or other contamination is found, prior to further flight, accomplish corrective actions. (3) Perform a detailed visual inspection for electrical damage of electrical relay 15GA and its socket. If any sign of electrical damage (arcing, discoloration, or charring) is detected, prior to further flight, replace the existing relay and socket with new parts. (4) Replace the existing nut plates on the floor of the cockpit with new, improved nut plates, on the left and right sides of the airplane. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, International Branch, ANM-116. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the International Branch, ANM-116. (c) 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. (d) The actions shall be done in accordance with Saab Service Bulletin 340-32-115, dated April 7, 1998, or Saab Service Bulletin 340-32-115, Revision 01, dated August 12, 1998. 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 Saab Aircraft AB, SAAB Aircraft Product Support, S- 581.88, Linkoping, Sweden. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; 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 Swedish airworthiness directive SAD 1-125, dated April 7, 1998. (e) This amendment becomes effective on October 27, 1998. Issued in Renton, Washington, on September 14, 1998. Dorenda D. Baker, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 98-25121 Filed 9-21-98; 8:45 am] BILLING CODE 4910-13-U
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1