SDR CA130401026

Service difficulty report · Drain Line · Boeing 737*

Difficulty date: March 30, 2013
Submitted: September 14, 2015
Operation: General aviation
Make and model: Boeing 737*
Aircraft time: 19,500 hours
Engine: Cfmint CFM567B22
System (JASC): 5610 · Flight Compartment Windows
Part: Drain Line
Condition: Leaking
Location: Sliding Window
Stage of operation: CL
How discovered: O
Nature of condition: O
Precautionary procedure: A

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

What was found

(CAN) AS THE ACFT WAS PASSING THROUGH 9,700 FT THE CREW PERFORMED AN AIR TURN BACK DUE TO A LOUD NOISE/SQUEAL COMING FROM THE CAPTAIN`S SLIDING L2 WINDOW. THE CREW REPORTED NORMAL PRESSURIZATION AND A DIFFERENTIAL PRESSURE OF APPROXIMATELY 3 PSI. ON THE GROUND MAINTENANCE FOUND THE FLIGHT DECK DRIP SHIELD DRAIN TUBE CAUGHT IN THE FORWARD EDGE OF THE SLIDING WINDOW FRAME. THE TUBE WAS SECURED AND THE ACFT WAS PRESSURIZED TO 4 PSI WITH NO FURTHER FAULTS.