SDR 96ZZZX2756

Service difficulty report · Seal

Difficulty date
August 23, 1995
Submitted
March 26, 2000
Operation
General aviation
Filed by
DSCR311D
National Flight Services Inc
Engine
Garrtt TPE331*
Part
Seal
Part number
31038393
Condition
Flange Cracked
Location
Turb 1st Stage
Part time
5,482 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

FOUND SEAL FLANGE CRACKED. SB 72-0840 AUTHORIZES INSTALLATION OF THIS PART TO INCREASE TENSION AGAINST 1ST STAGE ROTOR. INCREASED TENSION RESULTED IN CRACKING AT THE SEAL FLANGE. THIS IS A CRITICAL SERVICE LIFE-LIMITED COMPONENT. LIMIT - 20,000 CYCLES. SUBMITTER STATED THIS IS THE 18TH SEAL FOUND CRACKED. SUGGEST ALLIED SIGNAL REVIEW/CORRECT CONDITION. TOTAL CYCLES, 5,574.