Airworthiness directives › 2018-20-06
AD 2018-20-06 Airworthiness Directives; Airbus SAS Airplanes
Models named: A300 F4-605R, A300 F4-622R. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Airbus SAS Model A300 F4-605R and A300 F4-622R airplanes, certificated in any category, on which Airbus SAS modification 12046 has been embodied in production. Modification 12046 has been embodied in production on manufacturer serial numbers (MSNs) 0805 and above, except MSNs 0836, 0837, and 0838.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
This paragraph restates the requirements of paragraph (g) of AD 2016-25-03, with revised compliance times and new service information. At the applicable time specified in paragraph (h) of this AD, or before exceeding the threshold defined in table 1 to paragraph (g) of this AD, whichever occurs later: Do the actions specified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD. Repeat the high frequency eddy current (HFEC) inspection specified in paragraph (g)(3) of this AD thereafter at intervals not to exceed the applicable times specified in table 1 to paragraph (g) of this AD. (1) A one-time check of the aft LDCD clearances “U” and “V” between the latching hooks and the eccentric bush at FR60 through FR64A, in accordance with the instructions of Airbus Alert Operators Transmission A52W011-15, Revision 00, dated July 23, 2015; or the Accomplishment Instructions of Airbus Service Bulletin A300-52-6086, Revision 01, dated May 29, 2018. If any value outside tolerance is found, adjust the latching hook before further flight, in accordance with the instructions of Airbus Alert Operators Transmission A52W011-15, Revision 00, dated July 23, 2015; or the Accomplishment Instructions of Airbus Service Bulletin A300-52-6086, Revision 01, dated May 29, 2018. (2) A one-time detailed inspection to detect signs of wear of the hooks, eccentric bushes, and x-stops, in accordance with the instructions of Airbus Alert Operators Transmission A52W011-15, Revision 00, dated July 23, 2015. If any wear is found, do all applicable corrective actions before further flight, in accordance with the instructions of Airbus Alert Operators Transmission A52W011-15, Revision 00, dated July 23, 2015. (3) An HFEC inspection to detect cracking at all frame fork stations of the aft LDCD, in accordance with the instructions of Airbus Alert Operators Transmission A52W011-15, Revision 00, dated July 23, 2015; or the Accomplishment Instructions of Airbus Service Bulletin A300-52-6086, Revision 01, dated May 29, 2018, 2016. If any crack is found, before further flight, replace the cracked frame fork, in accordance with the instructions of Airbus Alert Operators Transmission A52W011-15, Revision 00, dated July 23, 2015; repair the cracked frame fork, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A300-52-6086, Revision 01, dated May 29, 2018; or reinforce the cracked frame fork, including doing all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A300-52-6085, Revision 01, dated May 2, 2018, except as required by paragraph (i) of this AD. ER01OC18.004
Unsafe condition
This AD was prompted by a report of two adjacent frame forks that were found cracked on the aft lower deck cargo door (LDCD) of two airplanes during scheduled maintenance, and the introduction of frame fork reinforcement or repair procedures that, when done, allow an extension of repetitive inspection intervals. We are issuing this AD to address cracked or ruptured aft LDCD frames, which could allow loads to be transferred to the remaining structural elements. This condition could lead to the rupture of one or more vertical aft LDCD frames, which could result in reduced structural integrity of the aft LDCD.
Affected ADs
This AD replaces AD 2016-25-03, Amendment 39-18729 (81 FR 93801, December 22, 2016) (“AD 2016-25-03”).
Read the original on the Federal Register →
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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