SDR 96ZZZX1719

Service difficulty report · Seal

Difficulty date
September 7, 1995
Submitted
March 26, 2000
Operation
General aviation
Filed by
DSCR311D
National Flight Services Inc
Engine
Garrtt TPE33112UHR
Part
Seal
Part number
31038393
Condition
Flange Cracked
Location
Turb 1st Stage
Part time
3,556 hours
Component
31033155
Stage of operation
IN
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 SCHEDULED INSPECTION, FOUND SEAL CRACKED AT FLANGE. SB 72-0840 AUTHORIZES INSTALLATION OF THIS PART TO PROVIDE INCREASED TENSION AGAINST THE FIRST STAGE ROTOR. THIS INCREASED TENSION RESULTS IN CRACKING AT THE SEAL FLANGE. SUBMITTER STATED THIS IS A CRITICAL LIFE-LIMITED COMPONENT. LIFE LIMIT - 20,000 CYCLES. THIS IS THE 13TH SEAL FOUND CRACKED. TOTAL CYCLES, 3,550.