Airworthiness directives › 2021-13-19
AD 2021-13-19 Airworthiness Directives; Airbus Helicopters
Applicability*9
This AD replaces AD 2014-11-02, Amendment 39-17852 (79 FR 33050, June 10, 2014).
Compliance
(1) For helicopters that have any repair or alteration to the frame No. 9, within 10 hours time-in-service (TIS) after the effective date of this AD and thereafter at intervals not to exceed 110 hours TIS, using a 10X or higher power magnifying glass, inspect the left-hand (LH) and right-hand (RH) frame No. 9 for a crack in the area of the latch support and stretcher support, as depicted in Figure 1 of Airbus Helicopters Emergency Alert Service Bulletin EASB No. 05.00.63, Revision 2, dated December 20, 2018 (EASB 05.00.63). (2) For all other helicopters, within 110 hours TIS after the effective date of this AD and thereafter at intervals not to exceed 110 hours TIS, perform the inspection in paragraph (f)(1) of this AD. (3) If there is a crack, before further flight, repair the frame No. 9. Repairing a frame is not terminating action for the repetitive inspections required by paragraphs (f)(1) and (2) of this AD. (4) As an optional terminating action for the repetitive inspections required by paragraphs (f)(1) and (2) of this AD, replace the upper section of frame No. 9 with a reinforced frame, Eurocopter MOD 53C17 or MOD 53D02, or Airbus Helicopters MOD 07 53D21 or MOD 07 53D22.
Required actions
Special flight permits to a repair facility may be issued provided that the flight does not exceed 10 hours TIS, any crack does not exceed a maximum crack length of 80 mm, and no passengers are onboard.
Unsafe condition
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Affected ADs
This AD defines the unsafe condition as a crack in frame number (No.) 9, which if not detected and corrected, could result in failure of frame No. 9, loss of structural integrity, and subsequent loss of control of the helicopter.
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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