|
Activity Number:
|
456
|
|
Type:
|
Topic Contributed
|
|
Date/Time:
|
Wednesday, August 5, 2009 : 10:30 AM to 12:20 PM
|
|
Sponsor:
|
Section on Physical and Engineering Sciences
|
| Abstract - #305870 |
|
Title:
|
Exceedence Monitoring and Alerting Mechanism for the Boeing In-Service Reliability Program
|
|
Author(s):
|
Shuying Zhu*+
|
|
Companies:
|
The Boeing Company
|
|
Address:
|
P.O. Box 3707 MC 7L-22, Seattle, WA, 98124-2207,
|
|
Keywords:
|
Weibull ; Life times ; aircraft maintenance
|
|
Abstract:
|
To provide airline customers comprehensive lifecycle management service, Boeing in-service reliability program is developing an alert mechanism to monitor parts and offer optimum service. It includes in the development monitoring metrics from pilot reports and scheduled interruptions. For frequently occurring events Wald confidence intervals provide adequate level of assurance against anomalous units. The problem arises when events occur infrequently. In such case, Wald confidence intervals suffer serious systematic bias and the coverage probability tends to behave erratically and consequently result in a large number of false alerts. In this talk, I discuss using Cai's second-order corrected method (CSOCM) for one-sided interval and Agresti-Coull's method (ACM) for two-sided confidence intervals to establish the monitoring thresholds.
|
- The address information is for the authors that have a + after their name.
- Authors who are presenting talks have a * after their name.
Back to the full JSM 2009 program |
