NTSB CAROL · Event
Event DEN08LA010
Registry · N368CA
FAA Aircraft Registry record.
Make / Model
BOMBARDIER INC CL-600-2C10
Year of manufacture
2003 · 4 years old at event
Engine
GE CF34 SERIES
Seats / Engines
80 seats · 2 engines
Last airworthiness date
20030113
ADS-B equipped
Yes — Mode-S A42A37
Registrant of record
DELTA AIR LINES INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
the in-flight collision with geese shortly after takeoff.
Factual narrative
On October 12, 2007, approximately 1300 mountain daylight time, a Bombardier CL-600-2C10, N368CA, registered to and operated by Skywest Airlines as Flight 4021, and piloted by an airline transport-certificated pilot, was substantially damaged when it collided with a flock of birds shortly after taking off from Denver International Airport (DEN), Denver, Colorado. Visual meteorological conditions prevailed at the time of the accident. The scheduled domestic passenger flight was being conducted under the provisions of Title 14 CFR Part 121, and an instrument flight rules (IFR) flight plan had been filed and activated. The captain, first officer, 2 flight attendants, and 70 passengers on board the airplane were not injured. The cross-country flight was originating at the time of the accident and was en route to Salt Lake City (SLC) International Airport, Utah. The captain reported they were about 1,500 feet above the ground when they saw a large flock of about 30 geese coming towards them. She said they heard 3 to 4 thuds, and then the right engine immediately began running rough. The VIB gauge was fluctuating rapidly from one extreme to the other. The captain declared an emergency and returned to DEN, landing uneventfully. An examination of the airplane showed damage to the right engine fan and dents along both wing leading edge slats. The left slat had to be replaced. The DEN 1155 ATIS (Automatic Terminal Information Service) gave a "bird advisory." The airplane was about 1,500 feet above the ground when it flew through a flock of about 30 geese. The crew heard 3 to 4 thuds, and then the right engine immediately began running rough. The captain declared an emergency and returned to the airport. An examination of the airplane showed damage to the right engine fan and dents along both leading edge wing slats. Approximately 1 hour before the accident, the airport's Automatic Terminal Information Service reported a "bird advisory." Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2007_DEN08LA010.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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