Author Topic: c/n 1454, N42DC  (Read 2343 times)

Doug Johnson

c/n 1454, N42DC
« on: May 24, 2015, 01:55:17 PM »
1 picture check your albums. Please do an internet search maybe you'll come up with one I couldn't find, I need all the help I can get.

Previous posts about N42DC or anything click on   http://flyhelio.com/smf/index.php?action=search  Enter ?

c/n 1454, built 08/73 as model H-295, original registry N6477V John Roberts (dealer) SC sold 08/73, rereg N42DC The Drummond Co (Donald Drummond) sold '76, Wilbur Neil M.D. IN sold '90, Wright Air (Bob Bursiel) AK (6th of 12) installed Fluidyne 3500 wheel skis 3,800lb up-gross accident during the landing roll at a remote site the right main landing gear collapsed and the right wing dragged the ground. Examination revealed that the right main landing gear leg, failed at the upper weld. Further examination revealed an undocumented previous repair at the failed area. It was found that the gear leg metal had been improperly heat treated following that repair @ Mount Deborah AK 8/93, next incident during cruise flight in snow showers the engine suddenly lost power. Subsequent examination of the plane by Company maintenance personnel revealed that the fuel vent tube located on top of the left wing had been bent back, allowing snow to become impacted through the curve of the line. This would result in fuel starvation to the engine @ Manley Hot Spring, AK 4/94, installed Bendix fuel injection accident the pilot reported that while in level, cruise flight, the engine began to run rough and lose power. The pilot said that while performing the engine emergency procedures, he smelled smoke in the cabin, and noted a substantial amount of engine oil on the windscreen. The airplane collided with trees during a subsequent forced landing. A post accident investigation revealed that the number two connecting rod had sustained a complete fracture. The number 2 connecting rod journal displayed significant amount of heat induced bluing. The fractured connecting rod, main journal bearing shells (7 halves), and rod bearing shells (7 halves) were sent to the NTSB's Materials Laboratory for examination. A Safety Board metallurgist reported that the separated connecting rod displayed evidence of low cycle, high stress fatigue cracking. A scanning electron microscope (SEM) examination of the rod bearing shells disclosed pitting, with irregular-shape metal particles embedded on the surface of the bearing material. The area around the pits showed evidence of metallic flow from the pits @ near Manley Hot Springs 3/01, Wright Air Service (Bob Bursiel) Fairbanks, AK dereg scrapped for parts

As always any further information or pictures would be greatly appreciated.

« Last Edit: March 18, 2021, 11:41:35 PM by Doug Johnson »
Doug

Jason Stephens

Re: c/n 1454, N42DC
« Reply #1 on: May 24, 2015, 03:20:03 PM »
Did the NTSB state a probable or possible cause for the bearing failure?

Doug Johnson

Re: c/n 1454, N42DC
« Reply #2 on: May 24, 2015, 06:33:33 PM »
I don't have a copy of the report but it is (NTSB ANC01LA039) you should be able to look it up.
Doug

Doug Johnson

Re: c/n 1454, N42DC
« Reply #3 on: March 18, 2021, 11:19:39 PM »
Added a photo of a/c with Bob B. standing in front of it thought to be c/n 1454 N42DC.
Doug