# Proposed AD FAA-2007-27339: McDonnell Douglas Model DC-10-10 and DC-10-10F Airplanes, Model DC-10-15 Airplanes, Model DC-10-30 and DC- 10-30F (KC-10A and KDC-10) Airplanes, Model DC-10-40 and DC-10-40F Airplanes, Model MD-10-10F and MD-10-30F Airplanes, and Model MD-11 and MD-11F Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-17-16
- Products: McDonnell Douglas
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period.
- Published: March 7, 2008, 73 FR 12301
- Comments due: April 1, 2008
- Became: [AD 2008-17-16](https://openairdocs.org/ad/2008-17-16)
- Docket: FAA-2007-27339 (https://www.regulations.gov/docket/FAA-2007-27339, where comments are filed)
- Project: 2006-NM-280-AD
- FR document: E8-4475
- Official PDF: https://openairdocs.org/files/sha256/2a/60/2a6018b497023a2822d14b05c90c7688420eeb2c53be4bf6459c79e3e8ed9fca (from https://www.govinfo.gov/content/pkg/FR-2008-03-07/pdf/E8-4475.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/03/07/E8-4475/airworthiness-directives-mcdonnell-douglas-model-dc-10-10-and-dc-10-10f-airplanes-model-dc-10-15
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4CE3A39E15ABB64E86257405004FFBAE.0001
- Page: https://openairdocs.org/proposed/FAA-2007-27339

## Summary

We are revising an earlier proposed airworthiness directive (AD) for certain transport category airplanes identified above. The original NPRM would have required modifying the fuel boost pumps. The original NPRM resulted from a fuel boost pump found with blown thermal fuses and a fractured thrust washer. This action revises the original NPRM by referring to new service information, which would require more work. We are proposing this supplemental NPRM to prevent failure of the fuel boost pumps, which could lead to the potential of ignition sources inside fuel tanks. This condition, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.

## Notices in this docket

- Feb 26, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-3166, comments due Apr 12, 2007 (https://www.federalregister.gov/documents/2007/02/26/E7-3166/airworthiness-directives-mcdonnell-douglas-model-dc-10-10-and-dc-10-10f-airplanes-model-dc-10-15)
- Mar 7, 2008: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period., FR document E8-4475, comments due Apr 1, 2008 (https://www.federalregister.gov/documents/2008/03/07/E8-4475/airworthiness-directives-mcdonnell-douglas-model-dc-10-10-and-dc-10-10f-airplanes-model-dc-10-15)

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