SDR DXTA2000810053295

Service difficulty report · Schrader Valve · Cessna 750

Difficulty date: October 5, 2008
Submitted: May 21, 2009
Operation: Air carrier
Aircraft: N944QS
Make and model: Cessna 750
Aircraft serial: 7500144
Aircraft time: 7,810 hours, 4,760 cycles
System (JASC): 2720 · Rudder Control System
Part: Schrader Valve
Condition: Leaking
Location: Gauge
Part time: 2,546 cycles
Stage of operation: CR
How discovered: O
Nature of condition: F
Precautionary procedure: A

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

What was found

STANDBY RUDDER SYS FAILED IN FLIGHT. CHECKED STANDBY RESERVOIR LEVEL IAW MM 29-20-05, OPS CHECK GOOD. TROUBLESHOT, PUMP CYCLING TOO LONG. FOUND ACCUMULATOR NITROGEN SERVICE AT 900 PSI , SPEC IS 2000 PSI, +-100 PSI. FOUND SCHRADER VALVE IN GAUGE LEAKING. REMOVED AND REPLACED GAUGE ASSY IAW MM 29-10-04. LK CHECK GOOD. CLOSED PANEL. OK TO INSTALL GAUGE. OK TO CLOSE PNL.

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