CH.03 / SHELL SYSTEMS
FAILURE MODE ANALYSIS
PAGE 07
MOTION FAILS BEFORE THE MEMBRANE.
Service reports by shell failure mode
A vertical bar chart shows shoulder bind as the highest reported failure mode at 36.8 reports per ten thousand field hours.
SERVICE REPORTS PER 10K FIELD HOURS
Technical shell program / recorded failure mode on first service intake
0
10
20
30
40
7.8
9.4
12.1
18.7
24.3
36.8
FABRIC
ABRASION
LAMINATE
SATURATION
SEAM
CHANNEL
CUFF
INGRESS
HOOD
SHEAR
SHOULDER
BIND
HIGHEST RECORDED MODE
36.8
reports / 10K field hours
Shoulder bind drove 31%
of in-spec intakes.
PANEL CONSTRUCTION / LOAD PATH