# Proposed AD FAA-2004-19809: McDonnell Douglas Model DC-9-10 Series Airplanes; Model DC-9-20 Series Airplanes; Model DC-9-30 Series Airplanes; Model DC-9-40 Series Airplanes; Model DC-9-50 Series Airplanes; Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; and Model MD-88 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-13-18
- Products: McDonnell Douglas
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 14, 2004, 69 FR 74461
- Comments due: January 28, 2005
- Became: [AD 2005-13-18](https://openairdocs.org/ad/2005-13-18)
- Docket: FAA-2004-19809 (https://www.regulations.gov/docket/FAA-2004-19809, where comments are filed)
- Project: 2003-NM-284-AD
- FR document: 04-27327
- Official PDF: https://openairdocs.org/files/sha256/2e/fa/2efa1da6a9e1368847b39e098ab05750ac469023398e7b6ecdc98c6468493fae (from https://www.govinfo.gov/content/pkg/FR-2004-12-14/pdf/04-27327.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/12/14/04-27327/airworthiness-directives-mcdonnell-douglas-model-dc-9-10-series-airplanes-model-dc-9-20-series
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/69E0DB6F35CA161F86256F6A005929AA.0001
- Page: https://openairdocs.org/proposed/FAA-2004-19809

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) that applies to certain SAFT America Inc., P/N 021929-000 (McDonnell Douglas P/N 43B034LB02) and P/N 021904-000 (McDonnell Douglas P/N 43B034LB03) nickel cadmium batteries. The existing AD currently requires replacing all battery terminal screws, verifying that the battery contains design specification cells, and replacing the cells if the battery contains non-design specification cells. This proposed AD would require an inspection for certain nickel cadmium batteries and, if necessary, replacing battery terminal screws with new hex head bolts and adding shims. This proposed AD is prompted by a report of battery screws shearing off while under normal torque loads. We are proposing this AD to prevent internal shorting, arcing, and loss of emergency battery power due to failed battery screws, which could result in loss of emergency power to electrical flight components or other emergency power systems required in the event of loss of the aircraft primary power source.

## Notices in this docket

- Dec 14, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-27327, comments due Jan 28, 2005 (https://www.federalregister.gov/documents/2004/12/14/04-27327/airworthiness-directives-mcdonnell-douglas-model-dc-9-10-series-airplanes-model-dc-9-20-series)

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