Accident Maule MX-7-235 N235X,
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ASN Wikibase Occurrence # 308532
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Date:Sunday 28 March 2021
Time:12:00 LT
Type:Silhouette image of generic M7 model; specific model in this crash may look slightly different    
Maule MX-7-235
Registration: N235X
MSN: 10054C
Year of manufacture:1987
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:Ontario, Oregon -   United States of America
Phase: Landing
Departure airport:Brigham City Airport, UT (BMC/KBMC)
Destination airport:Ontario, OR
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The pilot reported that, when he applied brakes during the landing roll, there was no pressure on the right brake pedal. The airplane veered left and ground looped, resulting in substantial damage. The pilot reported that he observed hydraulic fluid on the right main landing gear after the accident.

The accident was not reported until several months later. An examination of the parts retained by the pilot's mechanic, including the brake, brake disc, and fittings did not reveal any preimpact mechanical anomalies or failures that would have precluded normal operation. The hydraulic fluid observed on the landing gear suggests the brake failure may have resulted from a leak at either the hydraulic line or the hydraulic inlet fitting to the brake; however, these items were discarded or replaced before the event was reported and could not be examined. The cause of the leak and right brake failure could not be determined due to a lack of available evidence.

Probable Cause: A loss of hydraulic fluid and failure of the right brake for reasons that could not be determined due to a lack of available evidence.



Accident investigation:
Investigating agency: NTSB
Report number: WPR21LA362
Status: Investigation completed
Duration: 1 year and 10 months
Download report: Final report

Revision history:

20-Feb-2023 18:36 ASN Update Bot Added

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