Investigation Summary
The flight was arranged by Buddy Holly to avoid the freezing and unreliable tour buses used during the 'Winter Dance Party' tour. The pilot, 21-year-old Roger Peterson, was an employee of Dwyer Flying Service. Although Peterson had 711 hours of total flight time, he had failed a recent instrument flight check and was not certified to fly in weather requiring sole reliance on instruments. During his final briefings, Peterson was not informed of two critical flash weather advisories: one issued at 23:35 warning of a 100-mile wide band of snow moving into the flight path, and another at 00:15 warning of moderate to heavy icing and freezing drizzle across Iowa. Shortly after departing Mason City at 12:55 AM, the aircraft encountered these deteriorating conditions and total darkness. The aircraft was equipped with a Sperry F3 attitude indicator, which displayed pitch in a manner opposite to the conventional artificial horizons Peterson had trained on. Investigators believe Peterson likely misread the instrument, causing him to fly the aircraft into the ground while believing he was climbing or maintaining level flight. The wreckage was discovered the following morning by the owner of the flying service, Jerry Dwyer, approximately five miles northwest of the airport.
Final Conclusions
The Civil Aeronautics Board (CAB) concluded the probable cause was the pilot's unwise decision to embark on a flight requiring instrument flying skills he did not possess. A major contributing factor was the pilot's unfamiliarity with the specific type of attitude indicator installed in the aircraft, which likely led to spatial disorientation in the dark, snowy conditions. The CAB report was released in September 1959. In 2015, the NTSB reviewed a request to reopen the case based on theories of mechanical failure, but declined, stating the original findings remained supported by the evidence.
Photographic Evidence (1)
Video Analysis
Buddy Holly, Ritchie Valens & The Big Bopper Plane Crash — A look at the tragic 1959 Iowa plane crash that claimed the lives of three rock and roll legends and their pilot, Roger Peterson.
If playback is blocked, the owner has disabled embedding — use the link above.
Crew Experience
Captain
Pilot Roger Peterson was 21 years old and lacked an instrument rating.
Systems & Failure Modes
Sperry F3 Gyro
An attitude indicator that provided pitch and bank information; unlike conventional indicators of the era, it displayed the horizon moving in a direction that could lead to misinterpretation by an untrained pilot.
Ruddervators
The V-tail control surfaces of the Beechcraft Bonanza; a 2015 petition suggested their failure, but the NTSB found no evidence to support this.
Interesting Facts
- 01The crash site was located in Grant Township, Cerro Gordo County, Iowa.
- 02The aircraft struck the ground at an estimated speed of 170 mph.
- 03Pilot Roger Peterson had 52 hours of dual instrument training but had failed his flight check.
- 04The Sperry F3 attitude indicator in the Bonanza displayed pitch attitude in a way that could be confusing to a pilot trained on conventional horizons.
- 05The three musicians were thrown from the wreckage, while the pilot remained trapped inside the cockpit.
- 06The aircraft was manufactured on October 17, 1947, and carried serial number D-1019.
- 07Post-crash instrument readings showed the rate of climb indicator stuck at a 3,000 fpm descent and the airspeed indicator between 165-170 mph.
- 08The directional gyro was found in a caged position at the wreckage site.
- 09The engine was producing power at impact, with the tachometer stuck at 2200 RPM.
Safety Actions & Advisories
Death Notification Policy
Following the miscarriage suffered by Buddy Holly's widow after she learned of his death from a television news report, authorities adopted a policy of not releasing victim names until next of kin have been notified.
Known Controversies & Unanswered Questions
Firearm Discharge Rumors
Reference ↗A .22 caliber revolver belonging to Buddy Holly was found at the site months later with one spent casing, leading to speculation of a struggle or accidental discharge. Forensic re-examination of J.P. Richardson's body in 2007 confirmed he died of impact trauma and showed no signs of gunshot wounds.