Boeing 221 Monomail
Historical safety data and incident record for the Boeing 221 Monomail aircraft.
Safety Rating
10/10Total Incidents
2
Total Fatalities
1
Incident History
May 27, 1935 1 Fatalities
Wyoming Air Service
Glendo Wyoming
The pilot was performing a mail flight from Billings, Montana, to Cheyenne, Wyoming, with intermediate stops in Sheridan and Casper. While cruising in poor weather conditions, he decided to reduce his altitude to maintain a visual contact with the ground. Eventually, the single engine aircraft hit a hill located 21 kilometers south from Glendo, killing the pilot.
Safety Profile
Reliability
Reliable
This rating is based on historical incident data and may not reflect current operational safety.
Primary Operators (by incidents)
Inland Airlines1
Wyoming Air Service1