----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----At 10:25 AM 10/26/2006, Tandy Allen wrote:
I tried to find that AD in the FAA website but couldn't find it.
It's there. try http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/EE40FEB9A97CC32586256A57005164D1?OpenDocument&Highlight=55-22-02
It evidently had been changed from the original publication requiring "replaement with a stainless steel tank" to "replacement with a stainless steel OR ALUMINUM ALLOY tank"
The actual wording is a little confusing. the AD applies unless the stainless header tank is installed, but an aluminum tank may be a suitable replacement. Typical FAA-ese.. The AD refers to some service publications which may provide clarification.
55-22-02 ERCO: Applies to 415-C, -CD and -D Aircraft Serial Numbers 113 Through 2468 for Fuselage Tank Replacement; Serial Numbers 113 Through 2622 For Wing Tank Replacements.
Inspection required each 25 hours; replacement at time leakage discovered.
Unless the terneplate fuselage fuel tank has been replaced with a stainless steel tank and the terneplate wing fuel tanks replaced with aluminum alloy or stainless steel tanks, the tanks should be inspected frequently for signs of leakage at intervals not greater than 25 hours. If tank leakage is observed, the tank should be replaced with one of stainless steel or aluminum alloy, as required, before the next flight.
Erco Service Department Bulletins No. 10 and No. 10A and Memorandums No. 31 and 43 pertain to the inspection and replacement of these tanks.
This supersedes AD 47-50-10.
Skyport Services
PO Box 249
4996 Delaware Tnpk
Rensselaerville, NY 12147
518 797-3064
Fax 518 797-3865
www.skyportservices.net
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