SDR 97ZZZX1899

Service difficulty report · Pcu Filter Cap · Boeing 737*

Difficulty date
February 21, 1997
Submitted
March 26, 2000
Operation
General aviation
Filed by
IU6R626N
Aero Controls, LLC
Make and model
Boeing 737*
Part
Pcu Filter Cap
Part number
69356881
Condition
Burst
Location
Aileron System
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

THE FILTER CAP BURST UNDER WORKING CONDITIONS FOR THE AILERON PCU. THE ALUMINUM FILTER CAPS ARE WEAKER THAN THE STEEL ONES. IT IS RECOMMENDED THAT ALUMINUM CAPS BE REPLACED COMPLETELY BY STEEL FILTER CAPS.