Aviation Accident Summaries

Aviation Accident Summary WPR10LA395

Salt Lake City, UT, USA

Aircraft #1

N14105

EMBRAER EMB-145XR

Analysis

While on the downwind leg of the traffic pattern for the destination airport, the flying pilot transferred his focus from the instrument panel to outside the airplane. Immediately thereafter, he noticed a flock/formation of large birds directly ahead. With the airplane in such close proximity of the birds, he had no time to take evasive action. One of the birds impacted the airplane just aft of the nose cone. The bird, which was later tentatively identified as a White Pelican, penetrated the airplane's skin and entered the forward avionics bay. Neither flightcrew member had seen the birds in time for evasive action to be taken.

Factual Information

On August 10, 2010, about 1340 mountain daylight time, an Embraer EMB-145XR, N14105, collided with a large bird while on a downwind for a visual approach to Salt Lake City International Airport, Salt Lake City, Utah. The two flight crew members, the two cabin crew members, and the 46 passengers were not injured, but the airplane, which was owned and operated by Express Jet Airlines, sustained substantial damage. The 14 Code of Federal Regulations Part 121 scheduled passenger flight, which departed Houston-Bush Airport at 1136 central daylight time, was being operated in visual meteorological conditions (VMC). The airplane was on an Instrument Flight Rules (IFR) flight plan. According to the pilot, while the airplane was about five miles north of the airport, on a downwind for a visual approach in visual meteorological conditions, it flew through a flock of large birds about 6,900 feet above ground level (agl). A few seconds prior to the impact, as the airplane was being slowed from 280 knots to 190 knots, the Captain, who was the pilot doing the flying, looked at the instrument panel to check his instruments. When he looked back up he saw what he thought was at least six seagulls directly in front of the airplane. Neither he nor the First Officer had seen the birds prior to that moment in time. Because of their close proximity, there was no time to make control inputs to avoid them, and therefore one of the birds impacted the airplane forward of its windscreen. Because the bird penetrated into the forward avionics department, the Captain lost a number of his primary instruments, so he transferred control of the airplane to the First Officer, who completed an uneventful visual approach. When the airplane was inspected by emergency personnel on the taxiway, it was determined that a section of skin about three feet long had been folded back between the nose cone and the Captain's windscreen. Maintenance personnel who made an initial examination of the bird remains identified it as a White Pelican. A review of the data published by the Utah Water Science Center revealed that the Great Salt Lake is home to one of the three largest colonies of White Pelicans in North America, and that the adult birds can weigh as much as 20 pounds.

Probable Cause and Findings

An in-flight collision with a bird while on the downwind leg of the traffic pattern during a visual approach.

 

Source: NTSB Aviation Accident Database

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