Airworthiness directives › 97-13-07
AD 97-13-07 Airworthiness Directives; Hamilton Standard 54H60 Series Propellers
Models named: 54H60-77, -91, -111, - 117, -123, -125. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Hamilton Standard Models 54H60-77, -91, -111, - 117, -123, and -125 propellers, with serial numbers listed in Hamilton Standard Alert Service Bulletin (ASB) No. 54H60-61-A133, Revision 1, dated May 29, 1997. These propellers are installed on but not limited to Lockheed Martin C-130, C-130A, 382 series, L-100 series, L-188 series; Aero Space Lines Model 3775GT, and Lockheed Martin (Convair) CV580 series aircraft. Note 1: This airworthiness directive (AD) applies to each propeller 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 propellers 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 (c) 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 propeller blade fracture due to a manufacturing defect, which could result in propeller blade separation and loss of control of the aircraft, accomplish the following: (a) Within 50 hours time in service after the effective date of this AD, remove from service affected propeller blades, and return those blades to the manufacturer or an approved facility for inspection, rework, and return to service, in accordance with Hamilton Standard ASB No. 54H60-61-A133, Revision 1, dated May 29, 1997. (b) Those propeller blades that had the beveled radius recut and cold rolled at an FAA approved repair facility in accordance with the reference maintenance documents and cannot be returned to service at this time. Inspection and repair procedures are currently under development. (c) 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, Boston Aircraft Certification Office. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Boston Aircraft Certification Office. Note 2: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Boston Aircraft Certification Office. (d) 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 aircraft to a location where the requirements of this AD can be accomplished. (e) The actions required by this AD shall be done in accordance with the following Hamilton Standard ASB: [[Page 34621]] ------------------------------------------------------------------------ Document No. Pages Revision Date ------------------------------------------------------------------------ 54H60-61-A133................. 1-9 1 May 29, 1997. Total Pages: 9. ------------------------------------------------------------------------ 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 Hamilton Standard, Attn: Publications Mail Stop 6-B12, One Hamilton Rd., Windsor Locks, CT 06096-1010; telephone (860) 654-6876, fax (860) 654-6906. Copies may be inspected at the FAA, New England Region, Office of the Assistant Chief Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (f) This amendment becomes effective on July 28, 1997. Issued in Burlington, Massachusetts, on June 13, 1997. Jay J. Pardee, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 97-16281 Filed 6-26-97; 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