SDR 2014FA0000059

Service difficulty report · Pump · Beech 58P

Difficulty date: January 15, 2014
Submitted: February 7, 2014
Operation: General aviation
Aircraft: N58LP
Make and model: Beech 58P
Aircraft serial: TJ481
Engine: Cont TSIO520WB
System (JASC): 3120 · Independent Instruments
Part: Pump
Part number: 442CW4
Part serial: 00MA03
Condition: Inoperative
Location: Instrument Air
Part time: 58 hours
Stage of operation: IN
How discovered: V
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 AN ANNUAL INSPECTION, FOUND LEFT INSTRUMENT AIR PUMP INOPERATIVE. REMOVED PUMP, FOUND DRIVE COUPLING SHEARED. FOUND PUMP VANE DEBRIS IN PRESSURE SIDE AIR HOSE. SINCE O/H, ALL FILTERS WERE REPLACED WITH NEW WHEN PUMP WAS INSTALLED.

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