Accident Champion 7GCAA N9081L,
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ASN Wikibase Occurrence # 293472
 
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Date:Thursday 28 October 2004
Time:09:30 LT
Type:Silhouette image of generic CH7B model; specific model in this crash may look slightly different    
Champion 7GCAA
Owner/operator:Private
Registration: N9081L
MSN: 224-70
Engine model:Lycoming O-320
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Petaluma, California -   United States of America
Phase: Unknown
Nature:Private
Departure airport:Petaluma, CA (O69)
Destination airport:Petaluma, CA
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The pilot was adjusting the propeller's position by hand when the engine started, and the pilotless airplane taxied across the ramp and into a parked airplane. After numerous unsuccessful start attempts using the airplane's electric starter, the pilot examined the engine and adjusted the propeller by hand. When he adjusted the propeller the engine started. He had left the brakes off, the magnetos on, and the throttle advanced. After the engine started, the pilot backed away, and the airplane moved forward. The pilot attempted to arrest the movement by grabbing on to the right wing strut, but this action was unsuccessful. The airplane continued forward eventually impacting the nose onto the right front side of a parked airplane. The pilot's operating manual states in the before starting checklist to set the brakes, and in the starting checklist to crack the throttle open 1/2 to 1 inch. The shutdown checklist states the mixture should be idle - cut off and the magnetos off.

Probable Cause: the pilot's failure to follow the published prestart, start, and shutdown procedures.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: LAX05CA024
Status: Investigation completed
Duration: 2 months
Download report: Final report

Sources:

NTSB LAX05CA024

Revision history:

Date/timeContributorUpdates
10-Oct-2022 06:23 ASN Update Bot Added

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