SDR ERAA093691

Service difficulty report · Rotor Head · Bolkms BO105A

Difficulty date
May 3, 2003
Submitted
March 29, 2004
Operation
Air carrier
Aircraft
N135EH
Make and model
Bolkms BO105A
Aircraft serial
S675
Aircraft time
13,645 hours
Engine
Allsn 250C20
Part
Rotor Head
Part number
10531714
Part serial
295
Condition
Damaged
Location
Tail Rotor
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

INNER SLEEVE BUSHINGS DEBONDED. OB BUSHINGS 2 EA ON INNER SLEEVE CRACKED. BOTH RINGS IN BOTTOM OF GRIPS MECHANICALLY DAMAGED. IB INNER SLEEVE BUSHINGS WORN. TEETER BUILT BUSHINGS WORN AND MECHANICALLY DAMAGED . ALL FOUR TEFLON GRIP BUSHINGS WORN. ONE GRIP CAP BROKEN. DISASSEMBLED, CLEANED, REMOVED PAINT AND PRIMER AND VISUALLY INSPECTED ALL PARTS. C/W NDT INSPECTION REPLACED ALL PARTS WORN, CORRODED, OR MECHANICALLY DAMAGED BEYOND LIMITS. REASSEMBLED T/R ASSY WITH NEW NUTS, WASHERS, AND COTTER PINS. INSTALLED SERVICEABLE BLADES AND STATIC BALANCED. C/W 1200/2400 6 YR INSPECTION 300/2400 HR BLADE INSPECTION. CW BY AEC C/W ASB 105-10-116 TABLE 1 INSP.