Airworthiness Directive · Amendment 39-19290 · Flight controls
Lockheed Martin Corporation/Lockheed Martin Aeronautics Company
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.
We are adopting a new airworthiness directive (AD) for 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. 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. This AD requires a borescope inspection of the aileron control rod assembly to determine if threads exist on the aileron control rod body, and corrective actions if necessary. This AD was prompted by a report indicating that certain aileron control rod bodies 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, which contain the discrepant part, do not provide adequate load carrying capabilities. We are issuing this AD to address the unsafe condition on these products.
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.
As of the effective date of this AD, no person may install an aileron control rod assembly, P/N 826998-3, on any airplane, unless the aileron control rod assembly is serviceable as defined in paragraph (g) of this AD.
Although Lockheed Martin Aeronautics Company Aircraft Maintenance Bulletin M0017R2, Revision 2, dated May 10, 2018, recommends that inspection reports be submitted to Lockheed, this AD does not require that action.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
Appliances and equipment
