SDR DL72S992444

Service difficulty report · Valve · Boeing 727232

Difficulty date: November 5, 1999
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N401DA
Make and model: Boeing 727232
Aircraft serial: 21145
System (JASC): 2150 · Cabin Cooling System
Part: Valve
Condition: Failed
Location: Rt Pack
Component: 39608831
Stage of operation: TX
Nature of condition: B
Precautionary procedure: D

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

What was found

AFTER NR 3 ENG START AND RT PACK SELECTED ON, LOUD BANG WAS HEARD IN COCKPIT/CABIN. RT DUCT PRESS NEEDLE WENT TO ZERO AND AFT FLT ATTENDANTS REPORTED FUEL SMELL. INSPECTED DUCTS AT NR 3 ENG/PYLON/AFT AIRSTAIR FOR DAMAGE/LEAKAGE, CK GOOD. CHECKED DUCTS AT RT PACK BAY CK OK. RAN NR 3 ENG AND RAN RT PACK OPS CK NML. REPLACED RT AFT PACK VLV PRECAUTIONARY. SYSTEM CK NORMAL.