SDR 97ZZZX1329

Service difficulty report · Regulator · Cessna S550

Difficulty date: January 27, 1997
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N211QS
Make and model: Cessna S550
Aircraft serial: S5500011
System (JASC): 3710 · Vacuum Distribution System
Part: Regulator
Part number: 3H647
Condition: Defective
Location: Gyro Air
Part time: 8,128 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 POST-INSPECTION RUN UP, NOTICED CO-PILOT'S ATTITUDE GYRO AIR PRESSURE LOW AND GYRO UNSTABLE. FOUND FIRST STAGE AIR PRESSURE REGULATOR LOWER THAN NORMAL AND UNADJUSTABLE. REPLACED REGULATOR. FOUND CORROSION, DIRT, AND WATER INSIDE REGULATOR. AIR FILTER AND WATER SEPARATOR NOT REMOVING WATER.

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