# Proposed AD FAA-2019-0581: Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-25-20
- Products: Lockheed Martin
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 31, 2019, 84 FR 37165
- Comments due: September 16, 2019
- Became: [AD 2019-25-20](https://openairdocs.org/ad/2019-25-20)
- Docket: FAA-2019-0581 (https://www.regulations.gov/docket/FAA-2019-0581, where comments are filed)
- FR document: 2019-16130
- Official PDF: https://openairdocs.org/files/sha256/7f/07/7f07eb867149fdf1f6cdea9bb83f0d3302a5b87a830e01381680733911a14fee (from https://www.govinfo.gov/content/pkg/FR-2019-07-31/pdf/2019-16130.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/07/31/2019-16130/airworthiness-directives-lockheed-martin-corporationlockheed-martin-aeronautics-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6CE95E514E5589FD86258448004D35A8.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0581

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, 382G, C-130A, C-130B, C-130BL, C130E, C- 130H, C 130H 30, C130J, C130J-30, EC130Q, HC130H, KC 130H, NC-130B, NC130, and WC-130H airplanes. This proposed AD was prompted by a report indicating that two elevator booster assemblies experienced significant hydraulic fluid leaks, caused by fatigue cracks in the actuator cylinder. This proposed AD would require an inspection to determine the part number of the elevator booster actuator, repetitive ultrasonic inspections of the actuator to detect cracking, and replacement of cracked elevator booster assemblies. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jul 31, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-16130, comments due Sep 16, 2019 (https://www.federalregister.gov/documents/2019/07/31/2019-16130/airworthiness-directives-lockheed-martin-corporationlockheed-martin-aeronautics-company-airplanes)

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