SDR 0203539602

Service difficulty report · O-Ring · Doug DC932

Difficulty date
October 22, 2002
Submitted
October 30, 2002
Operation
Air carrier
Aircraft
N602NW
Make and model
Doug DC932
Aircraft serial
47046
Aircraft time
71,644 hours, 64,894 cycles
Part
O-Ring
Condition
Worn
Location
Hyd System
Stage of operation
AP
How discovered
O
Nature of condition
K, J
Precautionary procedure
O

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

What was found

AT 200 FEET DURING APPROACH FOR LANDING, THE RIGHT HYDRAULIC SYSTEM PRESSURE WAS AT 500 PSI WITH THE RIGHT HYDRAULIC PRESSURE LOW LIGHT ILLUMINATED. RIGHT HYDRAULIC QUANTITY WAS INDICATING ZERO. LANDING WAS UNEVENTFUL AT MSP. MAINTENANCE FOUND AND REPLACED A WORN O-RING ON THE MODULE CHECK VALVE. AIRCRAFT RETURNED TO SERVICE.

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