Service difficulty report · Screw · Skrsky S76C

Difficulty date
October 20, 2003
Submitted
October 29, 2003
Operation
Air carrier
Aircraft
N761AF
Make and model
Skrsky S76C
Aircraft serial
760524
Engine
Tmeca ARRIEL2B
System (JASC)
1430 · Fasteners
Part
Screw
Part number
7615009143041
Part serial
A08602706
Condition
Corroded
Location
M/R Blade Tipcap
Part time
903 hours
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

YELLOW BLADE(COLOR CODE) TIP CAP M/R SCREWS. FORWARD PAR OF ALL SCREWS HAVE A .002 INCH GAP BETWEEN THE HEAD OF SCREW AND MATING SURFACE. (AS MEASURED) SCREW IS NOT CONTACTING COMPLETELY AROUND THE HEAD OF SCREW. CORROSION IS APPEARING AT THE FIRST THREE THREADS OF ALL SCREWS. THE LARGE SCREWS, INSTALLATION TORQUE-100 IN/LBS. BREAKING TORQUE RANGED FROM 200 IN/LBS TO 110 IN/LBS.