Service difficulty report · Housing · Boeing 727*

Difficulty date
September 12, 2000
Submitted
November 2, 2000
Operation
General aviation
Make and model
Boeing 727*
Part
Housing
Part number
401606223
Condition
Corroded
Location
Check Valve
Component
Elev Feel Comp · Moog
Component part number
401602728A
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 ASSY CORRODED ON THE SEAL PLATE SURFACES, BOLT HOLES, AND CHECK VALVE PORTS. HOUSING ASSY IS MADE FROM MAGNESIUM ALLOY AND IS EXTREMELY SUSCEPTIBLE TO DISSIMILAR METAL CORROSION AND CRACKS. (X)

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