96-13-09
FR doc 96-15954AD 96-13-09Published 1996-06-28Effective 1996-07-15
Requires a review of maintenance records to determine the time-in-service (TIS) of the bearings in the starter/ generators of both engines.
1 correction to this AD FAA · 1996-10-01
Correction published 1996-10-01
- Issued by
- Federal Aviation Administration
- Published
- 1996-10-01
- Document
- Federal Register 96-25039 · Final rule; correction
This amendment clarifies information in an existing airworthiness directive (AD), applicable to all Jetstream 4101 airplanes, that currently requires a review of maintenance records to determine the time-in-service of the bearings in the starter/generators of both engines. It also establishes a new time-in-service limit for the bearings, and requires replacement of the starter/generator unit with a serviceable unit, if necessary. The actions specified in that AD are intended to prevent failure of the bearings of the starter/ generator, which could cause severe vibrations and resultant in-flight shutdown of one or both engines. This amendment clarifies the requirements of the current AD by specifying the name of the manufacturer of the starter/generator units that are affected by the requirements of this AD.
A correction restates part of an AD that was published incorrectly. It is not an additional requirement and it does not change the AD number or its effective date.
Source: Federal Register document 96-25039, retrieved 2026-08-18
Full official abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to all Jetstream Model 4101 airplanes. This action requires a review of maintenance records to determine the time-in-service (TIS) of the bearings in the starter/ generators of both engines. This action also establishes a new TIS limit for the bearings, and requires replacement of the starter/ generator unit with a serviceable unit, if necessary. This amendment is prompted by reports of controlled in-flight engine shutdowns resulting from failure of the bearings in the starter/generator unit. The actions specified in this AD are intended to prevent such failure of the bearings of the starter/generator, which could cause severe vibrations and resultant in-flight shutdown of one or both engines.