ERA10LA107

NTSB accident investigation · Maule M5 · LaGrange, GA · December 6, 2009

Accident · No injuriesLimited investigationFinal report
Date
December 6, 2009, 12:15 local (17:15 UTC)
Place
LaGrange, GA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N51620Maule M5
Defining event
Landing-landing roll: Aircraft structural failure
Weather
Visual (VMC) · Day
Status
Completed · report November 29, 2011
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
Case key
75223

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

On this page

Probable cause

The failure of the right main landing gear for undetermined reasons.

Findings · 1

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Landing gear system: main landing gearAircraft › Aircraft systems · Not specifiedMaule M-5-220C: 1 caseAll aircraft: 241 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

A Federal Aviation Administration (FAA) inspector was conducting a ramp check when he noticed a damaged airplane with substantial damage to the right wing and right main landing gear. According to the pilot, after landing he turned left off of the runway onto the first taxiway. He stated that, as he began the turn, the right landing gear collapsed and the right wing tip and propeller struck the ground.

Factual narrative

On December 6, 2009, about 1215 eastern standard time, a Maule M-5-220C, N51620, was substantially damaged following a collapse of the right main landing gear, at LaGrange-Callaway Airport (LGC), LaGrange, Georgia. The certificated private pilot/owner and his passenger were not injured. The personal flight was operated under the provisions of Title 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed, and no flight plan was filed. An inspector from the Federal Aviation Administration (FAA) Flight Standards District Office in Atlanta, Georgia, was conducting a ramp check at LGC several weeks after the accident when he noticed the damaged airplane, which was tied down in its usual location. The inspector determined that the pilot had not reported the damage, or the event that caused it, either to the FAA or to the National Transportation Safety Board (NTSB). Follow-up activity by the inspector revealed that the right wing and right main landing gear were substantially damaged. Each main landing gear consisted of two upper struts and one lower strut. The upper ends of the three struts attached to the fuselage, and the lower ends attached to the respective main wheel fitting. The lower strut of the right main gear was buckled, which permitted the right main landing gear to collapse, and the right wing to contact the ground. According to the pilot, after landing on runway 13, he turned left onto the first taxiway. He stated that as he began the turn, "the right landing gear collapsed" and the "right wing tip and propeller struck the ground." FAA records indicated that the airplane was manufactured in 1974, and that it was equipped with a Franklin 6A-350 series piston engine. The airplane was first registered to the pilot in 1981. Further information regarding the airplane's condition and maintenance history were never provided to the NTSB, despite several requests to both the FAA and the airplane's owner. Review of FAA Airworthiness Directives and Maule Service Bulletins revealed that no additional mandatory or recommended maintenance or inspection procedures regarding the M-5 main landing gear were issued. FAA records indicated that the pilot held a private pilot certificate with ratings for airplane single-engine land and instrument airplane. His most recent FAA third-class medical certificate was issued in July, 2008. He reported a total flight time of 723 hours, with 479 hours in the accident airplane. FAA records indicated that LGC was equipped with a single asphalt runway, designated 13-31, that measured 5,599 feet by 150 feet. Airport elevation was listed as 693 feet above mean sea level. The airport was not equipped with a control tower. The first taxiway that intersected runway 13 was located approximately 1,500 feet from the threshold, and was oriented perpendicular to the runway centerline. The 1215 recorded weather observation at LGC included winds from 130 degrees at 7 knots, 10 miles visibility, temperature5 degrees C, dew point 2 degrees C, and an altimeter setting of 30.27 inches of mercury.

Aircraft

Registration
N51620
Reported as
Maule M5 (220C)
Category
Airplane
Serial number
5012C
Airframe hours
922
Engine
Franklin 6A350, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Departed
LGC · Lagrange, GA
Destination
LGC · Lagrange, GA
Flight plan
Unknown
Airport
LGC · LaGrange-callaway Airport, runway 13, 5,600 × 150 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
July 26, 2009
Seat
Left
Flight hours
723 total · 479 in this make and model · 5 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
41 °F, dew point 36 °F
Altimeter
30.27 inHg
Observed at
LGC

Docket · 4

The files NTSB released with the investigation on October 14, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 239 KB in all.