NTSB Identification: CHI88IA111.
The docket is stored on NTSB microfiche number 37873.
Scheduled 14 CFR operation of UNITED AIRLINES
Incident occurred Wednesday, May 11, 1988 in DETROIT, MI
Probable Cause Approval Date: 01/25/1990
Aircraft: BOEING 737-222, registration: N9014U
Injuries: 41 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

WHILE CRUISING AT FL 230 A FLT ATTENDANT WHO WAS SERVING DRINKS NOTICED A CEILING PANEL FLAPPING AND BULGING. SHE NOTIFIED THE CAPT WHO STARTED A SLOW DESCENT AND GRADUALLY DECREASED THE CABIN PRESSURE. AIRPLANE MADE AN UNSCHEDULED LDG AT DETROIT. INVESTIGATION DISCLOSED A LOOSE VINYL COVERING ON THE CORE OF A CEILING PANEL. CABIN AIR WAS BLOWING BETWEEN THE COVER AND THE PANEL CORE CAUSING FLAPPING. SUBSEQUENT INSPECTION OF THE FUSELAGE REVEALED NO CRACKS AROUND THE RIVET HOLES.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

FUSELAGE,CABIN..IMPROPER

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

MISC EQPT/FURNISHINGS..LOOSE

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