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American Airlines 191

Printed page label not indexed. PDF page 61.

aircraft could be flown safely with this asymmetry. Other aircraft designs include positive mechanical locking devices to prevent movement of slats by external loads following a primary failure. The DC-10 design did not include such a feature nor was it
Open official document at PDF page 61NTSB AAR-79/17: American Airlines DC-10-10 N110AA, Chicago

American Airlines 191

Printed page 69. PDF page 73.

aircraft. 22. The design of the leading edge slat system did not include positive . mechanical locking devices to prevent movement of the slats by external loads following a failure of the primary controls. Certi- fication was based upon acceptable
Open official document at PDF page 73NTSB AAR-79/17: American Airlines DC-10-10 N110AA, Chicago