Airworthiness Directives; McDonnell Douglas Model MD-90-30 Airplanes
airworthiness · Rule · Final rule. · Published 2003-05-29 · Effective 2003-07-03 · 68 FR 31968
Document
Document number
03-13116
Federal Register citation
68 FR 31968
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
McDonnell Douglas Model MD-90-30
Publication date
2003-05-29
Effective date
2003-07-03
FAA docket
Docket No. 2001-NM-196-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to all McDonnell Douglas Model MD-90-30 airplanes, that requires replacement of the starter relay of the auxiliary power unit (APU) with a new, improved relay. The actions specified by this AD are intended to prevent failure of the APU starter relay, which could result in depleted main airplane batteries, overheated APU starters, and damage to the wiring adjacent to the APU starter. This action is intended to address the identified unsafe condition.