SEA06CA088

NTSB accident investigation · Potts MA-5 · Kalispell, MT · April 27, 2006

Accident · Minor injuriesData collectionFinal report
Date
April 27, 2006, 15:30 local (21:30 UTC)
Place
Kalispell, MT
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N413ACPotts MA-5
Weather
Visual (VMC) · Day
Status
Completed · report October 3, 2006
Report
Approved by Office Director
FAA report
20060427004749A
Case key
63588

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

Separation of the left main landing gear during the landing roll for an undetermined reason, which resulted in the airplane nosing down.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionLanding - roll
Landing gear,main gear - separationCause
Nose downLanding - roll
Terrain condition - runway

Analysis

According to the pilot, the airplane "pulled to the right after landing straight." He applied left rudder and brake, and the left main landing gear leg "broke off near weld 8 inches above axle." The gear leg dug into the asphalt, and the airplane nosed down. An FAA inspector examined the airplane and reported structural damage to the fuselage near the left gear attachment point. The reason for the failure of the left main landing gear was not determined.

Factual narrative

On April 27, 2006, about 1530 mountain daylight time, a Potts MA-5 amateur-built experimental airplane, N413AC, sustained substantial damage when the left main landing gear separated during the landing roll on runway 20 at Glacier Park International Airport, Kalispell, Montana. The private pilot, the sole occupant, received minor injuries. The airplane was registered to a private individual and operated by the pilot. Visual meteorological conditions prevailed and no flight plan was filed for the 14 CFR Part 91 personal local flight.

According to the pilot, the airplane "pulled to the right after landing straight." He applied left rudder and brake, and the left main landing gear leg "broke off near weld 8 inches above axle." The gear leg dug into the asphalt, and the airplane nosed down. An FAA inspector examined the airplane and reported structural damage to the fuselage near the left gear attachment point. The reason for the failure of the left main landing gear was not determined.

Aircraft

Registration
N413AC
Reported as
Potts MA-5
Category
Airplane, amateur-built
Serial number
263
Engine
Lycoming O-320-E2D, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Departed
GPI · Kalispell, MT
Destination
GPI
Airport
GCI · Glacier Park International, runway 20

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
74
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3
Flight hours
1,018 total · 102 in this make and model · 13 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.