SDR DL73E001014

Service difficulty report · Outflow Valve · Boeing 737247

Difficulty date: May 23, 2000
Submitted: May 30, 2000
Operation: Air carrier
Aircraft: N375DL
Make and model: Boeing 737247
Aircraft serial: 23602
Aircraft time: 34,843 hours, 29,625 cycles
System (JASC): 2133 · Pressure Regulator/Outflow Valve
Part: Outflow Valve
Condition: Inoperative
Location: Aft Fuselage
Component: Valve · 7110035
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

ON DEPARTURE FROM CVG, A/C FAILED TO PRESSURIZE LEVELED OFF AT 9,000 FT AND RETURNED TO CVG. INSPECTED DOOR SEALS AND A/C BAYS, ALL CHECKS OK. FOUND OUTFLOW VLV NOT WORKING PROPERLY. REPLACED OUTFLOW VLV, PRESSURIZED A/C TO 6 PSID, RAN PRESS CK PER MM, ALL CHECKS OK.