# Airworthiness Directives; McDonnell Douglas Model DC-10 and MD-11 Series Airplanes, and KC-10 (Military) Series Airplanes
> **Rule** · Final rule. · Published 1999-03-12 · Effective 1999-04-16 · 64 FR 12249
## Document
- **Document number:** 99-5990
- **Category:** airworthiness
- **Manufacturer:** McDonnell Douglas Model DC-10 and MD-11 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 12249
- **Publication date:** 1999-03-12
- **Effective date:** 1999-04-16
- **FAA docket:** Docket No. 98-NM-55-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-10 and MD-11 series airplanes, and KC-10 (military) series airplanes, that requires a one- time inspection for blockage of the lubrication holes on the forward trunnion spacer assembly, and a one-time inspection of the forward trunnion bolt on the left and right main landing gear (MLG) to detect discrepancies; and repair, if necessary. This amendment is prompted by reports of blockage by opposing bushings of the lubrication holes on the forward trunnion spacer assembly, and reports of flaking, galling, and corrosion of the forward trunnion bolt. The actions specified by this AD are intended to detect and correct such flaking, galling, and corrosion of the forward trunnion bolt, which could result in premature failure of the forward trunnion bolt and could lead to separation of the MLG from the wing during takeoff and landing.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/03/12/99-5990/airworthiness-directives-mcdonnell-douglas-model-dc-10-and-md-11-series-airplanes-and-kc-10-military)
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