Pilot Debrief

NORTH AMERICAN NAVION near Monett, MO — 2016-08-29

Final reportCEN16LA354
Sign in to save
Date
2016-08-29
Location
Monett, MO, USA
Airport
HFJ
Aircraft
NORTH AMERICAN NAVION
Registration
N91488
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Landing

Probable cause

Maintenance personnel’s failure to properly rig the right main landing gear locking mechanism, which resulted in a gear collapse during landing.

NTSB narrative

The commercial pilot stated that, during the landing roll following a normal landing, the airplane began pulling to the right. The airplane departed the right side of the runway and traveled down an embankment and through a barbed wire fence. When the pilot inspected the airplane, he noted that the right main landing gear (MLG) had collapsed. An examination of the landing gear found that the locking mechanism had been improperly rigged. Several weeks before the accident, the airplane's right MLG was damaged in an incident and had been replaced with a serviceable unit. A review of maintenance records noted that a gear retraction test was conducted after the replacement and described as satisfactory. It is likely that during this maintenance, the landing gear was improperly rigged, which resulted in its collapse on the accident flight.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Proper inspection of landing gear rigging before flight could have prevented the accident.

NTSB coding

Evidence available

  • Photos
  • 3 docket documents
View NTSB final reportView NTSB docket

Docket documents3

Related mishaps