Service difficulty report · O-Ring · Cessna 750

Difficulty date
May 3, 2013
Submitted
May 7, 2013
Operation
Air carrier
Aircraft
N919QS
Make and model
Cessna 750
Aircraft serial
7500224
Aircraft time
8,349 hours, 5,093 cycles
Part
O-Ring
Condition
Torn
Location
Hyd System
Stage of operation
CR
How discovered
O
Nature of condition
K, J
Precautionary procedure
A

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

What was found

LOST A SYS HYD SYS. QUANITY DROPPED BELOW 14 PERCENT FOLLOWED BY ASSOCIATED CAS MSG. "A" PRESSURE WENT TO ZERO. FOLLOWED CHECKLIST, BLEW GEAR DOWN. HYD FLUID LEAKING UNDER ACFT CENTER DRAIN MAST. TROUBLESHOT "A" HYD SYS. FOUND LT HYD PRESSURE TRANSDUCER O-RING TORN. ALSO FOUND HYD RESERVOIR INTERNAL FAILURE ON LT PYLON. REPLACED LT HYD RESERVOIR IAW MM 79-10-10. BLED SYS, OPS & LEAK CHECKED GOOD.

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