# Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes
> **Rule** · Final rule. · Published 2012-04-10 · Effective 2012-05-15 · 77 FR 21404
## Document
- **Document number:** 2012-8450
- **Category:** airworthiness
- **Manufacturer:** Lockheed Martin Corporation/Lockheed Martin Aeronautics Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 21404
- **Publication date:** 2012-04-10
- **Effective date:** 2012-05-15
- **FAA docket:** Docket No. FAA-2007-0109
## Abstract

We are adopting a new airworthiness directive (AD) for all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G airplanes. This AD was prompted by a report of incidents involving fatigue cracking and corrosion in transport category airplanes that are approaching or have exceeded their design service objective. This AD requires revising the maintenance inspection program to include inspections that will give no less than the required damage tolerance analysis for each principal structural element (PSE), doing repetitive inspections to detect cracks of all PSEs, and repairing cracked structure. We are issuing this AD to maintain the continued structural integrity of the fleet.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/04/10/2012-8450/airworthiness-directives-lockheed-martin-corporationlockheed-martin-aeronautics-company-airplanes)
---
*AI Analytics · CC0 1.0*