SDR 0001809856

Service difficulty report · Valve · Doug DC951

Difficulty date
May 6, 2000
Submitted
May 16, 2000
Operation
Air carrier
Aircraft
N765NC
Make and model
Doug DC951
Aircraft serial
47718
Aircraft time
57,919 hours, 59,932 cycles
Part
Valve
Part number
59268805501
Part serial
00627
Condition
Failed
Location
Hydraulic Sys
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

DURING APPROACH INTO MSP UPON SLAT EXTENSION, THE AIRCRAFT ROLLED TO THE RIGHT. SLAT DISAGREEMENT LIGHT ILLUMINATED AND NO SLAT EXTEND INDICATION. PERFORMED COM PROCEDURES AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE HYDRAULIC SLAT VALVE BYPASSING IN BOTH EXTEND AND RETRACT. REPLACED VALVE AND RIGGED SLAT. LEAK AND OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.

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