Airworthiness directives › 95-15-52
AD 95-15-52 Airworthiness Directives; Boeing Model 747-100 and -200 Series Airplanes
Models named: 747-100 series, 747-200 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model 747-100 series airplanes modified in accordance with Supplemental Type Certificates (STC) SA2322SO, SA2323SO, or SA5199NM; and Model 747-200 series airplanes modified in accordance with STC's SA4227NM-D or SA5759NM; 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 use the authority provided in paragraph (c) of this AD to request approval from the FAA. This approval may address either no action, if the current configuration eliminates the unsafe condition; or different actions necessary to address the unsafe condition described in this AD. Such a request should include an assessment of the effect of the changed configuration on the unsafe condition addressed by this AD. In no case does the presence of any modification, alteration, or repair remove any airplane from the applicability of this AD.
Compliance
Required as indicated, unless accomplished previously. To prevent structural failure of the longitudinal floor beams and keel beam and the subsequent rupture of the fuselage, accomplish the following: (a) Within 24 clock hours (not flight hours) after the effective date of this AD, revise the Limitations section of the FAA-approved Airplane Flight Manual (AFM) and the Limitations section of the Airplane Weight and Balance Supplement (Model 747-100 or -200 series airplanes) to include the following information. This may be accomplished by inserting a copy of this AD in the AFM. ``1.1 MAIN CARGO DECK LIMITS (ADDITION): Each of the following payload limits for pallet cargo apply to the main cargo deck floor between Body Stations 1265 and 1480. Note: These limits take precedence over any other payload limits that may appear elsewhere in this or in any other document. 1. Do not exceed a linear load of 96.0 pounds per inch between Body Stations 1265 and 1480. 2. The maximum local floor loading in any area located between Body Stations 1265 and 1480 shall not exceed 150 pounds per square foot. 3. The cargo pallets that are located entirely or partially between Body Stations 1265 and 1480 are restricted as follows: A. Pallets that are 96.0 inches in width and 125.0 inches in length shall not exceed a 1.0 g loading of 6,000 pounds. B. Pallets that are 88.0 inches in width and 125.0 inches in length shall not exceed a 1.0 g loading of 5,500 pounds. C. Pallets that are 88.0 inches in width and 108.0 inches in length shall not exceed a 1.0 g loading of 4,800 pounds.'' - (b) Accomplishment of a modification of the longitudinal floor beams in accordance with a method approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate, constitutes terminating action for the limitation requirements of paragraph (a) of this AD. The AFM limitation and Weight and Balance Supplement limitation may be removed following accomplishment of such a modification. - (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, Seattle ACO, 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, Seattle ACO. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Seattle ACO. -(d) This amendment becomes effective on August 25, 1995, to all persons except those persons to whom it was made immediately effective by telegraphic AD T95-15-52, issued on July 14, 1995, which contained the requirements of this amendment. Issued in Renton, Washington, on August 3, 1995. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 95-19653 Filed 8-9-95; 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