SDR 20010613CW015

Service difficulty report · B-Nut · Beech 1900C

Difficulty date: May 22, 2001
Submitted: June 13, 2001
Operation: Air carrier
Aircraft: N172GA
Make and model: Beech 1900C
Aircraft serial: UB11
Engine: Pwa PT6A65B
System (JASC): 7920 · Engine Oil Distribution (Airframe Furnished)
Part: B-Nut
Condition: Loose
Location: Torque Manifold
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: E

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

What was found

OIL LINE TO THE TORQUE MANIFOLD B-NUT CAME LOOSE. OIL PRESSURE FLUCTUATED AND ENGINE SHUT DOWN. AIRCRAFT LANDED. ENGINE WAS INSPECTED AS PER PWA MM. LOW OIL PRESSURE PROCEDURE, NO DAMAGE FOUND. OIL SERVICED AND ENGINE TEST RUN, PER PWA CHECK.

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