Service difficulty report · Bypass Valve · Boeing 757222

Difficulty date
September 9, 2000
Submitted
October 4, 2000
Operation
Air carrier
Aircraft
N516UA
Make and model
Boeing 757222
Aircraft serial
24860
Aircraft time
34,650 hours, 13,142 cycles
Engine
Pwa PW2037
Part
Bypass Valve
Condition
Leaking
Location
Slats
Stage of operation
LD
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

LEFT HYDRAULIC SYSTEM QUANTITY WENT TO ZERO. GEAR AND FLAP WERE EXTENDED BY ALTERNATE METHOD. *S/D* REPLACED SLAT BYPASS VALVE IAW AMM 27-81-09. OPERATIONAL CHECK GOOD.