NTSB Identification: CHI87IA067.
The docket is stored on NTSB microfiche number 35753.
Scheduled 14 CFR operation of UNITED AIRLINES
Incident occurred Sunday, January 25, 1987 in FORT WAYNE, IN
Probable Cause Approval Date: 07/10/1989
Aircraft: BOEING 727-122, registration: N7015U
Injuries: 6 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.

AIRCRAFT EXTERIOR SKIN FAILED IN FATIGUE WHILE IN CRUISE FLIGHT. THE AIRCRAFT LOST CABIN PRESSURE AND THE PASSENGER OXYGEN MASKS AUTOMATICALLY DEPLOYED. THE FLIGHT CREW DONNED OXYGEN MASKS, DECLARED AN EMERGENCY TO ATC AND DESCENDED TO 10,000 FT. THE AIRCRAFT DIVERTED TO A SUITABLE AIRPORT AND LANDED WITHOUT FURTHER INCIDENT.

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

FUSELAGE,SKIN..FATIGUE

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