SDR 95ZZZX7031

Service difficulty report · Valve · Piper PA31350

Difficulty date: November 23, 1995
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N27343
Make and model: Piper PA31350
Aircraft serial: 317752163
System (JASC): 7922 · Engine Oil Temperature Regulator
Part: Valve
Part number: 53E19600
Condition: Loose Crimp Nut
Location: Thermo Bypass
Part time: 300 hours
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 INSPECTION PER LYCOMING SB 518C, A NUT WAS FOUND LOOSE ON SHAFT. NOTE THAT SERIAL NUMBER OF THIS UNIT IS BEYOND RANGE OF SERVICE BULLETIN AND, THEORETICALLY, HAS BEEN REDESIGNED TO ELIMINATE THIS PROBLEM. (FIFTH VERNATHERM WITH PROBLEM FOUND IN LAST TWO WEEKS.)

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