ABBREVIATED COMPONENT MAINTENANCE MANUAL
P/N 504414-SERIES
PAGE 19 OF 42
June 9, 2014
Rev. 2
25-20-217
Use or disclosure of information on this page is subject to the restrictions on the title page of this document
CHECK
1. Task
Use visual checks to find damaged or worn parts and parts that show signs of near failure. If you find
and correct possible conditions of failure, you can prevent failures in the aircraft and make the
equipment more reliable.
2.
Equipment and Materials
None.
3. Procedures.
A.
General.
(1)
Make sure that the restraint system is clean and does not contain dirt, oil or grease, other
unwanted particles or substances.
(2)
Make sure all parts are satisfactorily attached.
B.
Webbing.
NOTE: Slight wear of the webbing is permitted. However, excessive web wear that has
progressed to cut or worn edges must be replaced, as described below.
(1)
Examine webbing for cut or worn edges, damaged stitching, broken fabric threads, tears,
excessive chafe marks, excessive wear, excessive fusing.
(2)
Webbing must be replaced if any of the following are observed:
A limited amount of “frayed” webbing will retain sufficient strength necessary to meet the
required strength. Frayed webbing is defined as broken filaments from either the warp
(longitudinal) yarns or the filler (transverse) yarns. The number of broken filaments should
not be sufficient to obscure the identity of any yarn when viewed from a distance of about 8
inches.
Any web that is cut or torn on the edge should be replaced.
The amount of fray should be limited to an amount that is less than 10% of the width of the
webbing and not to exceed 8 inches in length.
Webbing with more than 15 broken yarns in locations other than the edge.
Webbing that is frayed or distorted sufficiently to cause improper operation of any portion of
the restraint system.
A total of 15 stitches can be torn in a stitch pattern before the webbing needs replacement.
(3)
Examine labels for legibility.
The document reference is online, please check the correspondence between the online documentation and the printed version.