# Proposed AD 98-NM-200-AD: Withdrawal - Lockheed Model L-1011-385 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Withdrawn
- Products: Lockheed
- Product type: Aircraft
- Action: Proposed rule; withdrawal.
- Published: September 11, 2006, 71 FR 53347
- Comments due: August 31, 2006
- Docket: 98-NM-200-AD
- FR document: E6-14944
- Official PDF: https://openairdocs.org/files/sha256/1c/23/1c23e530d7172da97216d767087f1fe4bd8e6d6e9a9dc347e26ef13e44346778 (from https://www.govinfo.gov/content/pkg/FR-2006-09-11/pdf/E6-14944.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/09/11/E6-14944/airworthiness-directives-lockheed-model-l-1011-385-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F648067948D7C531862571E600578BE3.0001
- Page: https://openairdocs.org/proposed/98-NM-200-AD

## Summary

This action withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD), applicable to all Lockheed Model L-1011-385 series airplanes. That action would have required repetitive leak tests of the lavatory drain systems and repair, if necessary; installation of a lever lock cap, vacuum breaker check valve or flush/fill line ball valve on the flush/fill line; periodic seal changes; and replacement of "donut'' type waste drain valves installed in the waste drain system. Since the issuance of the NPRM, the Federal Aviation Administration (FAA) has reviewed existing data and determined that, for airplanes without a history of engine damage resulting from "blue ice,'' such as Lockheed Model L-1011-385 series airplanes, the hazard of "blue ice'' to persons and property may be more appropriately addressed through means other than AD action. Accordingly, the proposed rule is withdrawn.

## Notices in this docket

- Sep 3, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-23741, comments due Oct 19, 1998 (https://www.federalregister.gov/documents/1998/09/03/98-23741/airworthiness-directives-lockheed-model-l-1011-385-series-airplanes)
- Sep 11, 2006: Proposed rule; withdrawal., FR document E6-14944, comments due Aug 31, 2006 (https://www.federalregister.gov/documents/2006/09/11/E6-14944/airworthiness-directives-lockheed-model-l-1011-385-series-airplanes)

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