Accident Rockwell 690B Turbo Commander N690ES,
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ASN Wikibase Occurrence # 354568
 
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Date:Friday 24 April 1998
Time:15:05 LT
Type:Silhouette image of generic AC90 model; specific model in this crash may look slightly different    
Rockwell 690B Turbo Commander
Owner/operator:Private
Registration: N690ES
MSN: 11355
Year of manufacture:1976
Total airframe hrs:6780 hours
Engine model:Garrett TPE-331-5-251
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Broomfield, CO -   United States of America
Phase: Landing
Nature:Training
Departure airport:Oklahoma City, OK
Destination airport:(KBJC)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The pilot-owner said that after landing, he brought the condition levers from ground idle to reverse. The airplane veered to the right, as if 'one engine was developing more power than the other.' The instructor pilot took control and attempted to straighten the airplane but it departed the runway and struck a concrete culvert. The left landing gear collapsed, and the tip from one of the left propeller blades penetrated the pressure vessel. The right propeller and right and nose landing gears also sustained damage. During repairs, no abnormalities were found with either the propeller, pitch, or Bendix controllers.

Probable Cause: Failure of the flight instructor to maintain adequate supervision, and failure of the pilot receiving instruction to maintain directional control that was lost for reasons undetermined. A factor was the concrete culvert.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: FTW98LA197
Status: Investigation completed
Duration: 2 years and 9 months
Download report: Final report

Sources:

NTSB FTW98LA197

Location

Revision history:

Date/timeContributorUpdates
11-Mar-2024 15:53 ASN Update Bot Added

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