# Proposed AD 97-NM-288-AD: McDonnell Douglas Model DC-10 Series Airplanes and KC-10A (Military) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-26-22
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 26, 1998, 63 FR 14654
- Comments due: May 11, 1998
- Became: [AD 98-26-22](https://openairdocs.org/ad/98-26-22)
- Docket: 97-NM-288-AD
- FR document: 98-7879
- Official PDF: https://openairdocs.org/files/sha256/d5/d2/d5d2b63069d3c521c14f3d967e7df46207bacaa30671402fd43599e448609ce0 (from https://www.govinfo.gov/content/pkg/FR-1998-03-26/pdf/98-7879.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/03/26/98-7879/airworthiness-directives-mcdonnell-douglas-model-dc-10-series-airplanes-and-kc-10a-military
- Page: https://openairdocs.org/proposed/97-NM-288-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model DC-10 series airplanes and KC-10A (military) airplanes. This proposal would require repetitive inspections to detect cracking of the lower cap of the wing rear spar, and repair, if necessary. This proposal is prompted by reports of fatigue cracks found in the lower cap of the wing rear spar. The actions specified by the proposed AD are intended to detect and correct fatigue cracking of the lower cap of the wing rear spar, which could result in reduced structural integrity of the airplane.

## Notices in this docket

- Mar 26, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-7879, comments due May 11, 1998 (https://www.federalregister.gov/documents/1998/03/26/98-7879/airworthiness-directives-mcdonnell-douglas-model-dc-10-series-airplanes-and-kc-10a-military)

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