NTSB Identification: DCA11FA084A
Scheduled 14 CFR Part 121: Air Carrier operation of ATLANTIC SOUTHEAST AIRLINES INC
Accident occurred Thursday, July 14, 2011 in Boston, MA
Aircraft: BOMBARDIER CL600 2D24, registration: N132EV
Injuries: 291 Uninjured.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

On July 14, 2011, about 1933 eastern daylight time, a Delta Air Lines B767-300ER, N185DN, operating as Delta flight 266, was taxiing on taxiway B for departure on runway 04 at Boston Logan International Airport (BOS), Boston, Massachusetts, when its left winglet struck the horizontal stabilizer of an Atlantic Southeast Airlines CRJ900, N132EV, operating as ASA flight 4904, which was number three in line on taxiway M waiting for departure on runway 09. As the B767 approached and passed the intersection with taxiway M, the left winglet of the B767 struck the horizontal tail of the CRJ900. The CRJ900 sustained substantial damage, which included damage to the horizontal tail and vertical tail, and the airplane lost fluid in all three hydraulic systems. Parts of the B767 winglet were sheared off and embedded in the tail of the CRJ900. The passengers on the CRJ900 were deplaned on the taxiway, and the B767 taxied back to the terminal. No injuries were reported on either aircraft.

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