Service difficulty report · Housing · Boeing 757

Difficulty date
December 23, 2009
Submitted
December 23, 2009
Operation
General aviation
Make and model
Boeing 757
Part
Housing
Part number
776635604
Condition
Broken
Location
Starter
Component
Starter · PS600
Component part number
784750A2
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

PNEUMATIC STARTER (PN 784750A2) RETURNED FOR MX. THE STARTER HAS HAD A TURBINE ROTOR FAILURE WHICH RESULTED IN THE USE OF THE CONTAINMENT FEATURE OF THE INLET HOUSING (HS PN 776635-604). THIS INLET HOUSING HAS REPAIR NR 151-5 (REPAIR TECH INLET HSG, EXHAUST FLANGE REPLACEMENT). UPON LOADING OF THIS HSG DURING ROTOR FAILURE, THE WELDED WEBS OF THE INLET HSG FRACTURED THUS ALLOWING THE HOUSING TO SEPARATE AND POTENTIAL FOR CONTAINMENT FAILURE.