Service difficulty report · Blade · Hughes 369E

Difficulty date
December 23, 2016
Submitted
August 10, 2017
Operation
General aviation
Aircraft
N506PH
Make and model
Hughes 369E
Aircraft serial
0375E
Part
Blade
Part number
500P3100105
Part serial
C775
Condition
Delaminated
Location
Tail Rotor
Part time
1,644 hours
Stage of operation
IN
How discovered
9
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

TAIL ROTOR BLADEWAS FOUND IN A DELAMINATED STATE DURING A POST FLIGHT INSPECTION. THE ABRASION STRIP HAD DELAMINATED FROM THE LEADING EDGE OF THE BLADE. THIS BLADE HAD BEEN INSTALLED FOR 3 DAYS AND ONLY HAD 7.1 HRS ON IT FROM REPAIR. PROBABLE CAUSE OF THE DELAMINATION IS IMPROPER CURE TIME FOR THE BONDING ADHESIVE, IMPROPER MIXING OF THE BONDING ADHESIVE, AND OR IMPROPER BEND RADIUS TO METAL LEADING EDGE CAUSING IT NOT SEAT PROPERLY AGAINST THE BLADES CONTOURED LEADING EDGE. TO PREVENT A REOCCURRENCE OF THE TAIL ROTOR BLADE ABRASION STRIP DELAMINATION, WOULD RECOMMEND FOLLOWING PROPER PROCEDURES WHEN REPAIRING A BLADE AND RE-APPLYING THE ABRASION STRIP.

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