Airworthiness directives › 2004-25-04
AD 2004-25-04 Airworthiness Directives; Mooney Aircraft Corporation Models M20B, M20C, M20D, M20E, M20F, M20G, and M20J Airplanes
Makes named: mooney. Models named: M20C, M20D, M20E, M20F, M20G, M20J, M20B. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(c) This AD affects Models M20C, M20D, M20E, M20F, M20G, and M20J airplanes, all serial numbers, that are: (1) certificated in any category; (2) equipped with an O & N Bladder Fuel Cell installed per Supplemental Type Certificate (STC) SA2277CE or STC SA2350CE; and (3) This AD affects Model M20B airplanes, all serial numbers, that are certificated in any category and have any of the STCs referenced in paragraph (c)(2) incorporated by field approval.
Required actions
(e) To address this problem, you must do the following: Actions Compliance Procedures (1) On both the left and right wing, inspect the drain valve to assure that it was inserted fully into the drain nipple Within the next 12 months after January 21, 2005 (the effective date of this AD), unless already done (see Note 1) Follow O & N Aircraft Modifications Inc. Mandatory Service Bulletin No. ON-100, dated February 1, 1998. (2) Modify any drain valve found not to be inserted fully into the drain nipple Prior to further flight after the inspection required in paragraph (e)(1) of this AD, unless already done (see Note 1). Follow O & N Aircraft Modifications Inc. Mandatory Service Bulletin No. ON-100, dated February 1, 1998. (3) On both the left and right wing do the following: (i) Install a foam wedge to reduce the amount of trapped fluids in the center fuel cell; (ii) Install an anti-ice mast forward of the vent tubes to prevent icing of the fuel tank vents; (iii) Drill a vent hole to prevent icing of the engine's crankcase breathers; and (iv) Replace the flush style fuel caps and adapters with raised style caps and adapters. Follow the instructions in paragraph (f) of this AD as an alternative method of compliance for replacing the flush style fuel caps Within the next 12 months after January 21, 2005 (the effective date of this AD), unless already done (see Note 1). Follow O & N Aircraft Modifications Inc. Mandatory Service Bulletin No. ON-100, dated February 1, 1998. Note 1: All kits installed by (or obtained from) O&N Aircraft Modifications Inc. after February 1, 1998, incorporate the actions of this AD. If you have one of these kits installed, you may take “unless already done” credit for the actions of this AD.
Unsafe condition
(d) This AD is the result of reports of rain water entering the fuel bladders and the information from the subsequent evaluation of the fuel systems. The actions specified in this AD are intended to assist in preventing water from entering the fuel bladders, which could result in rough engine operation or complete loss of engine power.
Affected ADs
(b) 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