Probable cause
An in-flight collision with a bird during the approach.
NTSB analysis
The pilot flying the airplane reported that, during an instrument flight rules instructional flight, the airplane was established on a very high frequency omnidirectional range approach. The pilot reported that, during the approach, he observed a large bird dive into the airplane's nose section. The pilot recalled that there was no time to react between the initial observation and impact. He terminated the training flight and landed the airplane as soon as practical and without further incident. The airplane sustained substantial damage to the fuselage frame.
The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Text from the NTSB. Open the NTSB docket for GAA17CA244 for the full record.
Event
- Date
- Apr 24, 2017
- Type
- Accident
- Place
- Waukesha, Wisconsin
- Nearest airport
- Waukesha County (UES)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Beech 99
- N-number
- N899CZ
- Category
- Airplane
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Instructional
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.