Service difficulty report · Window · Boeing 767322

Difficulty date
June 28, 2010
Submitted
July 9, 2010
Operation
Air carrier
Aircraft
N644UA
Make and model
Boeing 767322
Aircraft serial
25094
Aircraft time
81,686 hours, 13,110 cycles
Engine
Pwa PW4060
Part
Window
Part number
141T4835503
Part serial
49
Condition
Leaking
Location
Cockpit
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

CAPT SLIDING WINDOW LEAK. HISSING LEAK ONLY BECAME EVIDENT AT 7.0 PSI DIFF PRESSURE. AREA OF HISSING COMING FROM AREA AROUND WINDOW LOCK LATCH HANDLE. CONFIRMED WITH AMT'S THAT PERFORMED INITIAL PRESSURE TEST A TYPO WAS MADE REGARDING PRESSURE READING DURING TEST. MAX PRESSURE ACHIEVED WAS 3.5 AND WINDOW HISSING BEGAN AT 3.0 PSI. REPLACED WINDOW ASSY & PRESSURIZED TO 4 PSI, NO NOISE.