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If you want to increase longevity, reduce electrical demands, and be legal to boot.....:
http://www.aircraftspruce.com/catalog/e ... cement.php
![Image](http://www.aircraftspruce.com/catalog/graphics/11-07744.jpg)
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
I don't know what could be more "reasonably priced" than 4509 lamps from anyone other than G.E.jrenwick wrote:Are they working on reasonably priced L.E.D. landing lights, too?
The Model 70875 Series, are fully FAA TSO’d forward position lights.
The mfr'r states they qualify under the provisions of Standard Parts per FAR 21.303(4) and per AC 23-27 and also that they meet the Mil-Specs for such lamps (Mil 45208A, Mil-STD 45662 and Fed. STD WL 00111, and they are made per ISO-9000. Like AN bolts and other standard parts they do not require additional approval.DWood wrote:Why wouldn't they need a PMA? My fear would not be that they will last longer and draw less power, it would be that they do not appear to be standard on the 170. If not a PMA, what is the method of conveying that you can use these on any airplane?
Just curious
Yes, and the Whelen units cost $205 EACH versus PSA's $33 each. TSO'd nav lights are not required for our airplanes. PSA pointed out that they are, and have been, an aircraft parts manufacturer/supplier for years. They make the actual colored lenses for other mfr's (such as Whelen, Grimes) which are probably already on your airplane.DWood wrote:Going thru the Spruce catalog, Whelen has similar position lights that are TSO'dThe Model 70875 Series, are fully FAA TSO’d forward position lights.
It sounds good but what is the basis of approval for installation on an airplane?
George is relaying what the manufacturer told him. Each one of us would have to determine if we believed the manufacturer and decide if we the owner/operator then think these are standard parts and a direct replacement without further approval. Of course you most likely would want to involve whom ever is inspecting your airplane as they might not come to the same conclusion as you do.gahorn wrote:The mfr'r states they qualify under the provisions of Standard Parts per FAR 21.303(4) and per AC 23-27 and also that they meet the Mil-Specs for such lamps (Mil 45208A, Mil-STD 45662 and Fed. STD WL 00111, and they are made per ISO-9000. Like AN bolts and other standard parts they do not require additional approval.DWood wrote:Why wouldn't they need a PMA? My fear would not be that they will last longer and draw less power, it would be that they do not appear to be standard on the 170. If not a PMA, what is the method of conveying that you can use these on any airplane?
Just curious