Airworthiness directives › 2018-11-02
AD 2018-11-02 Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company
Models named: 188A, 188C, P3A, P-3A, P3B, CP-140, NP-3A, P-3B, P-3C, P-3P. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 188A and 188C airplanes; and Model P3A, P-3A, and P3B airplanes type certificated under various other type certificate holders; certificated in any category. Note 1 to paragraph (c) of this AD: Certain variants of Model 188A and 188C airplanes are known as “P-3” series airplanes. P-3 series airplanes include but are not limited to Model CP-140, NP-3A, P3A, P-3A, P3B, P-3B, P-3C, P-3P, and WP-3D airplanes.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 3 days after the effective date of this AD, perform a borescope inspection of the aileron control rod assembly, P/N 826998-3, to determine if threads exist on the aileron control rod body, P/N 826999-3, in accordance with Lockheed Martin Aeronautics Company Aircraft Maintenance Bulletin M0017R2, Revision 2, dated May 10, 2018. If the inspection indicates missing threads on the aileron control rod body, before further flight, replace the aileron control rod assembly with a serviceable part. A serviceable aileron control rod assembly is one that has been inspected in accordance with the requirements of this paragraph and found to have internal threads on the aileron control rod body. Note 2 to paragraph (g) of this AD: Guidance on replacing the aileron control rod assembly can be found in Lockheed Martin Aircraft Maintenance Manual Sections 27-2-2 AILERON PRIMARY CONTROL CABLES, Maintenance Practices, Rigging of Aileron Primary Control Cable System; 27-2-3 AILERON PUSH-PULL TUBES, BRACKETS AND BELLCRANKS, Maintenance Practices, Aileron Push-Pull Tubes, Brackets and Bellcranks, Remove/Replace/Adjust/Rig; and 27-2-4 AILERON, Maintenance Practices, Removal/Installation/Adjustment/Lubrication aileron.
Unsafe condition
This AD was prompted by a report indicating that certain aileron control rod bodies, part number (P/N) 826999-3, were incorrectly machined so that they did not include the load-carrying threads in the bore of the aileron control rod body. As a result, aileron control rod assemblies, P/N 826998-3, which contain the discrepant part, do not provide adequate load carrying capabilities. We are issuing this AD to address failure of the aileron control rod assembly, or loss or failure of the #10 (0.190-inch diameter) screw holding the left (or right) aileron control rod assembly together, which will result in loss of aileron authority, and could result in the jamming of both left and right ailerons, and 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