Bondline - User contributions [en]

Panel Switches

2010-08-03T20:23:13Z

Matair:

'''Cliff Daugherty's installation of SK-156'''

[[Image:SK-156.jpg]]

Service Kit #156, the replacement of the instrument panel rocker switches with toggle switches, was primarily cosmetic as only two switches had failed in the past 33 years. The paperwork is avaiable from Fletchair in Houston, Texas. However, the new rocker switches were slightly different than the original and didn’t fit as well in the holes. The aluminum plate was fabricated, painted, and engraved instead of using the placards suggested in the SK. As an alternative, a plastic placard to match the aluminum piece could also be used and simply glued to the metal.

SK #156 first came about from a request from the UK CAA to address the problems of overheating and smoke in the copit from the cheap Carling rocker switches. In Europe there is an Annual AD to inspect these switches and spade connectors for signs of overheating. At one stage it looked like SK156 was to become mandatory, but common sense prevailed.

MLG Attach Bolts

2008-08-14T12:14:20Z

Matair:

This page is a place holder for the upcoming photos and discussion on the subject of the Illustrated Parts Catalog possibly showing the wrong bolt callout for several year models.

The bolt in question is the AN8 (1/2") bolt at the outboard end of the Main Landing Gear attachment fittings. It can be viewed with the sump cover removed.

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'''Here is what the wrong bolt looks like installed into the upper forged bracket and the "C" shaped bracket. Note that the threaded portion is all that is able to go into the spar.'''

[[Image:Wrong_Bolts.jpg]]

'''This is what an AN8-16A looks like inserted into the same brackets. Note that the shoulder of the bolt sticks out and would bear against the hole in the spar, and not the threads, as shown in the previous picture.'''

[[Image:Correct_Bolts.jpg]]

'''Here is a comparison of the OEM installed AN8-13A, and the correct grip length AN8-16A.'''

[[Image:2bolts.jpg]]

'''Here is a picture from inside the spar showing the correct AN8-16A bolt nearest the camera. Note the amount of thread protruding from the anchor nut. If the incorrect bolt had been used no thread would be showing.'''
[[Image:AN8.jpg]]

MLG Attach Bolts

2008-08-14T12:09:53Z

Matair:

This page is a place holder for the upcoming photos and discussion on the subject of the Illustrated Parts Catalog possibly showing the wrong bolt callout for several year models.

The bolt in question is the AN8 (1/2") bolt at the outboard end of the Main Landing Gear attachment fittings. It can be viewed with the sump cover removed.

----

'''Here is what the wrong bolt looks like installed into the upper forged bracket and the "C" shaped bracket. Note that the threaded portion is all that is able to go into the spar.'''

[[Image:Wrong_Bolts.jpg]]

'''This is what an AN8-16A looks like inserted into the same brackets. Note that the shoulder of the bolt sticks out and would bear against the hole in the spar, and not the threads, as shown in the previous picture.'''

[[Image:Correct_Bolts.jpg]]

'''Here is a comparison of the OEM installed AN8-13A, and the correct grip length AN8-16A.'''

[[Image:2bolts.jpg]]

'''Here is a picture from inside the spare showing the correct AN8-16A bolt nearest the camera. Note the amount of thread protruding from the anchor nut. If the incorrect bolt had been used no thread would be showing.'''
[[Image:AN8.jpg]]

File:AN8.jpg

2008-08-14T12:00:51Z

Matair: View inside spar with correct length AN8 bolt fitted nearest camera.

View inside spar with correct length AN8 bolt fitted nearest camera.