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20000219003639I

Incident · Minor damage
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FAA incident report · Amtr MA5 · Half Moon Bay, CA · February 19, 2000

FAA Aviation Safety Information Portal

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Date
February 19, 2000 · 13:30 local
Place
Half Moon Bay, CA
Airport
Half Moon Bay Airport
Phase of flight
Roll-Out (Fixed Wing)
Operating rules
General operating rules (Part 91)
Damage
Minor damage
Aircraft
N55GT
Reported as
Amtr MA5
People aboard
2
Fatal injuries
0
Pilot’s flight hours
2,000 total727 in this make and model8 in the last 90 days
N55GTRegistered now · Turner Lynda MA-5 CHARGERS/N 5 · Built 1979Airframe modelTurner Lynda MA-5 CHARGEREngine modelLycoming 0-320 seriesReciprocating

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

During a normal roll-out after landing, on haf runwat 12, the right main gera collapsed. The two right pylon tubes failed below the weld, causing the aircraft to drag the right wing and veer right. One left tube also failed, however there was no prop strike, and aircraft damage remained minor. Subsequent inspection of the failed pylons revealed that the blueprint required a 7/8"X0.49" tube, but a 7/8"X0.35" tube had been installed at the time of manufacture, and sold to the aircraft builder as an assembly. A previous landing gear failure incident had weakened the structural integrity of this aera, and precipitated premautre failure of the frame structure. The failed pylon tube evidenced a prior strike mark, in addition to the strike mark generated during this incident. Although the previous gear failure had been repaired, it had been re-inforced beyond the manufactuer's drawings, eventually transferring the load to an already weakened area, now evidenced as also being inferior from the time of production. A safety recommendation will be pursued separately.

As the FAA filed it

DURING A NORMAL ROLL-OUT AFTER LANDING, ON HAF RUNWAT 12, THE RIGHT MAIN GERA COLLAPSED. THE TWO RIGHT PYLON TUBES FAILED BELOW THE WELD, CAUSING THE AIRCRAFT TO DRAG THE RIGHT WING AND VEER RIGHT. ONE LEFT TUBE ALSO FAILED, HOWEVER THERE WAS NO PROP STRIKE, AND AIRCRAFT DAMAGE REMAINED MINOR. SUBSEQUENT INSPECTION OF THE FAILED PYLONS REVEALED THAT THE BLUEPRINT REQUIRED A 7/8"X0.49" TUBE, BUT A 7/8"X0.35" TUBE HAD BEEN INSTALLED AT THE TIME OF MANUFACTURE, AND SOLD TO THE AIRCRAFT BUILDER AS AN ASSEMBLY. A PREVIOUS LANDING GEAR FAILURE INCIDENT HAD WEAKENED THE STRUCTURAL INTEGRITY OF THIS AERA, AND PRECIPITATED PREMAUTRE FAILURE OF THE FRAME STRUCTURE. THE FAILED PYLON TUBE EVIDENCED A PRIOR STRIKE MARK, IN ADDITION TO THE STRIKE MARK GENERATED DURING THIS INCIDENT. ALTHOUGH THE PREVIOUS GEAR FAILURE HAD BEEN REPAIRED, IT HAD BEEN RE-INFORCED BEYOND THE MANUFACTUER'S DRAWINGS, EVENTUALLY TRANSFERRING THE LOAD TO AN ALREADY WEAKENED AREA, NOW EVIDENCED AS ALSO BEING INFERIOR FROM THE TIME OF PRODUCTION. A SAFETY RECOMMENDATION WILL BE PURSUED SEPARATELY.

Other reports on N55GT · 1

Matched to the same aircraft by N-number and date.

Incident 19951208043169IRoll-Out (Fixed Wing) · Riverside/Rubid, CANarrative: on landing rollout during the second in a series of landings, the right main landing gear collapsed, followed shortly by the left main landing gear. Initial inspection of the aircraft appears to show the landing gear collapse occurred due to a…Dec 8, 1995 · Reported as Amtrmq CHARGERMA5 · Minor damage