Service difficulty report · Motor · Saab SF340A

Difficulty date
March 1, 2003
Submitted
March 14, 2003
Operation
Air carrier
Make and model
Saab SF340A
Part
Motor
Part number
M3348A1
Part serial
5098
Condition
Inoperative
Location
On Fan
Component
Fan
Component part number
C209690D
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

WHEN FAN WAS TESTED, IT FAILED THE MINIMUM RPM REQUIREMENTS. WHEN IT WAS DISASSEMBLED, IT WAS DISCOVERED THAT THIS OVERHAULED UNIT HAS NOT BEEN OVERHAULED IAW DAE OVERHAUL MANUAL. THE ARMATURE IS NOT OF DAE DESIGN. ONE LEAD OF THE ARMATURE IS BURNED, THE COMMUTATOR IS SCORED, AND THE IMPELLER SHOWS SIGNS OF RUBBING. DAE OVERHAUL MANUAL DOES NOT ALLOW FOR THE REWINDING OF THE ARMATURE OR THE REPLACEMENT OF PARTS OTHER THAN LISTED.

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