Service difficulty report · Housing · Boeing 737*

Difficulty date
October 23, 2001
Submitted
November 15, 2001
Operation
Air carrier
Make and model
Boeing 737*
Part
Housing
Part number
511531
Condition
Cracked
Location
Shuttle Valve
Component
Shuttle Valve · Pneudraulics
Component part number
50592
Stage of operation
IN
How discovered
V
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

HOUSING IS CRACKED INSIDE ONE OF THE BOLT MOUNTING HOLES. LEAKS AT PROOF PRESSURE. FATIGUE, DEFECT IN THE CASTING OF THE HOUSING AND/OR OVERTORQUING OF BOLT ON INSTALLATION.