Service difficulty report · Blade · Doug MD900

Difficulty date
July 12, 2010
Submitted
July 14, 2010
Operation
Air carrier
Aircraft
N902LC
Make and model
Doug MD900
Aircraft serial
9000018
Aircraft time
1,432 hours, 5,651 cycles
Part
Blade
Part number
900R1150003101
Part serial
60560224
Condition
Debonded
Location
Main Rotor
Part time
1,433 hours, 5,651 cycles
Component
Main Rotor Hub · Doug
Component part number
900R2101006107
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

DURING 100 HR INSP DAMAGE LOCATED APPROX 1.25 INCHES FROM THE OTBD END OF THE BLADE TIP, ALONG THE AFT EDGE OF THE ABRASION STRIP ON THE LOWER SURFACE, AND MEASURES 1.00 INCH WIDE BY .50 INCHES LONG (FWD/AFT). THE OVERALL SIZE OF THE DAMAGE IS ROUGHLY THE SIZE OF A QUARTER, WITH APPROX (2) COMPOSITE PLIES MISSING. TAP TESTING OF THE AREA HAS DETERMINED THAT AN APPROX .1875 INCH BAND OF DEBOND DAMAGE EXIST AROUND THE DAMAGE AREA, AND THAT THE ABRASION STRIP IS INTACT (NO EVIDENCE OF DEBONDING). REPLACEMENT BLADE ON ORDER.

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