Rockwell International 690B accident near Hiles, WI
On September 28, 2021, a Rockwell International 690B (airplane) was involved in an accident near Hiles, WI. 3 people died. Damage to the aircraft: destroyed.
- Date
- September 28, 2021
- Place
- Hiles, WI
- Aircraft
- Rockwell International 690B · Airplane
- Injuries
- 3 fatal, 0 serious, 0 minor
- Damage
- Destroyed
- Position
- 45.911°N, 89.019°W
- NTSB ID
- 20210928103984
Official records · CEN21FA459
- Public docket: reports, statements and exhibits from the investigation
Air traffic control records
- ATC Audio: Audio recording (MP3), on ntsb.gov
NTSB summary
HISTORY OF FLIGHTOn September 28, 2021, about 0900 central daylight time, a Rockwell International 690B airplane, N690LS, was destroyed when it was involved in an accident near Hiles, Wisconsin. The pilot and two passengers sustained fatal injuries. The airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 aerial imagery survey flight. According to the operator, the purpose of the flight was to obtain aerial imagery of forest vegetation for the Wisconsin Department of Natural Resources. Automatic dependent surveillance-broadcast (ADS-B) and ATC information provided by the Federal Aviation Administration (FAA) indicated the airplane departed Rhinelander-Oneida County Airport (RHI), Rhinelander, Wisconsin, about 0850. About 8 minutes later, the airplane began to level off at an altitude of about 16,100 ft and accelerated to a maximum recorded groundspeed of 209 knots. Between 0858 and 0900, the airplane’s groundspeed decreased to about 93 knots, and the airplane descended about 500 ft while on a steady northeasterly heading. The airplane subsequently made a right turn with a rapid descent (see figure 1), and the ADS-B data ended at 0900:56. According to ATC audio, transmissions indicating “mayday, mayday, mayday” and ”we’re in a spin” were broadcast while the accident airplane was in flight. Figure 1. Airplane flightpath and accident site location. A witness, who was located about 1 mile from the accident site, reported that he heard a “loud, strange sounding airplane.” He looked up and noticed an airplane “nose down at high rate of speed spinning abou
Probable cause
The pilot’s failure to maintain adequate airspeed, which caused the airplane to exceed its critical angle of attack and enter an inadvertent stall and spin.
More accidents in WI
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Browse: Wisconsin · Rockwell International aircraft
Source: NTSB aviation accident database (US government, public domain). Findings may be preliminary or later revised by the NTSB. Not a complete global record.
