SDR 99ZZZX2350

Service difficulty report · Line · Swrngn SA227AC

Difficulty date: May 27, 1999
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N2728G
Make and model: Swrngn SA227AC
Aircraft serial: AC731
System (JASC): 7920 · Engine Oil Distribution (Airframe Furnished)
Part: Line
Part number: 31035781
Condition: Chafed
Location: Engine Oil
Stage of operation: CR
Nature of condition: J
Precautionary procedure: E, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING FLIGHT FROM ISN TO MOT, PILOT NOTICED FLUCTUATING OIL PRESSURE, THEN OIL PRESSURE DROPPED BELOW THE YELLOW ARC. PILOT SHUT DOWN THE ENGINE, LANDING WITHOUT INCIDENT. FOUND OIL LINE FROM NTS TEE TO GEARBOX HAD CHAFED THROUGH ON ANOTHER OIL LINE. SHOULD HAVE BEEN DISCOVERED DURING PHASE INSPECTION.