# Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company
> **Rule** · Final rule; request for comments. · Published 2018-05-23 · Effective 2018-05-23 · 83 FR 23788
## Document
- **Document number:** 2018-11133
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 83 FR 23788
- **Publication date:** 2018-05-23
- **Effective date:** 2018-05-23
- **FAA docket:** Docket No. FAA-2018-0447
## Abstract

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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/05/23/2018-11133/airworthiness-directives-lockheed-martin-corporationlockheed-martin-aeronautics-company)
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