Airworthiness directives › 2023-02-04
AD 2023-02-04 Airworthiness Directives; Mooney International Corporation Airplanes
Makes named: mooney. Models named: M20C, M20D, M20E, M20F, M20G. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Mooney International Corporation Model M20C, M20D, M20E, M20F, and M20G airplanes, all serial numbers up to 680170 inclusive, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Before further flight after the effective date of this AD, inspect both elevators to determine if any hybrid elevator balance weight part number (P/N) 430018-1 is installed in accordance with STEP 1.1 of the Instructions section in Mooney International Corporation Service Bulletin M20-345A, dated December 13, 2022. The repetitive inspection and replacement required by paragraphs (g)(2) and (3) of this AD are not required if any hybrid elevator balance weight P/N 430018-1 is not installed. (2) If any hybrid elevator balance weight P/N 430018-1 is installed, before further flight after the effective date of this AD and thereafter at intervals not to exceed 100 hours time-in-service or 12 months, whichever occurs first, inspect each hybrid elevator balance weight P/N 430018-1 for any corrosion and cracks in accordance with STEP 2 of the Instructions section in Mooney International Corporation Service Bulletin M20-345A, dated December 13, 2022. (3) If any corrosion or cracks are found as a result of any inspection required in paragraph (g)(2) of this AD, before further flight, replace the elevator balance weight with a non-hybrid (lead) elevator balance weight P/N 430016-7 in accordance with STEPS 3.1.1 through 3.1.8 of the Instructions section in Mooney International Corporation Service Bulletin M20-345A, dated December 13, 2022, except contacting Mooney Service Parts in STEP 3.1.7 is not required by this AD. The repetitive inspections required by paragraph (g)(2) of this AD are no longer required for that elevator balance weight after this replacement. (4) As of the effective date of this AD, do not install hybrid elevator balance weight P/N 430018-1 on any airplane.
Unsafe condition
This AD was prompted by reports of the hybrid elevator balance weight cracking. The FAA is issuing this AD to detect and address the corrosion and cracking of the hybrid elevator balance weight. The unsafe condition, if not addressed, could result in partial or total separation of the elevator balance weight during flight, which could lead to elevator flutter with consequent loss of control of the airplane.
Affected ADs
None.
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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