SDR 95ZZZX6044

Service difficulty report · Regulator · Cessna 550

Difficulty date: September 19, 1995
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N5314J
Make and model: Cessna 550
Aircraft serial: 550663
System (JASC): 3610 · Pneumatic Distribution System
Part: Regulator
Part number: 99120432
Condition: Gasket Failed
Location: Pneumatic
Part time: 500 hours
Component: Lucas
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

AT ALMOST EVERY PHASE INSPECTION, FIND THE 23 PSI PNEU REGULATOR LEAKING BLEED AIR DUE TO BLOWN GASKET. REGULATOR IS LOCATED NEXT TO THE AFT PRESSURE BULKHEAD AND PROVIDES PNEUMATIC PRESSURE FOR DE-ICE BOOTS, INSTRUMENTS, AND PRESSURIZATION CONTROL. ALSO, FOUND CAP SCREW ON CAP WITH ALMOST NO TORQUE AT ALL.

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