The International Cessna^® 170 Association

Kyle,

I am also Scandinavian. Lucky for me it looks like those little screws will take less than 10 turns to get out.

I can see myself getting the alignment right and then putting on bigger tires someday. I'll forget about the lights until I land somewhere at night with an audience, passenger. The next day he'll be telling everyone about that goofy Norweigen.

Bill

Aw George; You have appeared to satisfy the needs of those seeking a source for light bulbs for leading edge landing lights. However I have not
received any response to my inquiry on a source for bulb replacement of retractable landing lights , as equiped on the 1948 rag wing C170 . These bulbs have a built in shield to shield the pilot against a reflective light when illuminated .These are smaller than those in the C195 or the DC-3.
The life of these lamps is about 25 - 35 hours ,the only time I turn mine on is at annual because if it is on the airplane ,it has to work ,so I try to perserve the bulb life . However I would desire a source of replacement,
should the need arise.
I thank you for any and all information you may have on this matter.
Bob

If the light the same as the Grimes found on a 140 it's a GE4522, 13v 250W sealed beam bulb. This guy has them; http://www.donsbulbs.com/cgi-bin/r/b.pl ... ctric.html

Has "GE 4522 Aircraft Landing" printed on the back of the reflector.

Just noticed the price he wants, $87 for one. Seems to me I bought the spare I have now for about $20. I'll look around and see where it was I got it.

Skygeek.com has them for about $21 and Spruce has them for about $26.

http://www.skygeek.com/gesealbeamla2.html

Tye

LEA wrote:Aw George; You have appeared to satisfy the needs of those seeking a source for light bulbs for leading edge landing lights. However I have not
received any response to my inquiry on a source for bulb replacement of retractable landing lights , as equiped on the 1948 rag wing C170 . These bulbs have a built in shield to shield the pilot against a reflective light when illuminated .These are smaller than those in the C195 or the DC-3.
The life of these lamps is about 25 - 35 hours ,the only time I turn mine on is at annual because if it is on the airplane ,it has to work ,so I try to perserve the bulb life . However I would desire a source of replacement,
should the need arise.
I thank you for any and all information you may have on this matter.
Bob

These PAR 46 bulbs can be purchased from Spruce 877-477-7823 under their part number 11-03525 for $13.90 Hope that helps.
George

Bill, the Flat Country Pilot,

If you're of Scandinavian descent and your ancesters came from the country just west of Sweden, then it is spelled "NORWEGIAN".


My grandmother "Ginella Evenson" would kill me if I misspelled it!

gahorn wrote:These PAR 46 bulbs can be purchased from Spruce 877-477-7823 under their part number 11-03525 for $13.90 Hope that helps.
George

Excellent! Even cheaper. Haven't heard of the Galaxy brand, are they comparable lifewise to the GE?


Tye

BL,

We Norwegians have difficulty counting above ten using fingers and toes, spelling and typing.

However, with a little German blood in me I did manage degrees in math and engineering.

Bill

thammer wrote:

gahorn wrote:These PAR 46 bulbs can be purchased from Spruce 877-477-7823 under their part number 11-03525 for $13.90 Hope that helps.
George

Excellent! Even cheaper. Haven't heard of the Galaxy brand, are they comparable lifewise to the GE?


Tye

I haven't used them (I use 4509's) so I can't comment on their quality. I suspect they're equal to anything/everything else we Americans get these days from China/Taiwan/Singapore/Malaysia/Pakistan/India/Timbuctu

As it happens, this topic was discussed just a few weeks before my GE4522 gave up the ghost. Being frugal (to put it one way), I decided to give the Galaxy-brand 4522 from Aircraft Spruce and Specialty ("ASS") a try.

Well, the lamp arrived today, and I have to say I am disappointed. Although the back is stamped with the number "4522" and the words "Aircraft Landing Light," it is not identical to the GE-manufactured bulb that I am replacing. First, while the GE-brand lamp is flat on its face, the Galaxy-brand lamp has a concave face. More importantly, the filament shield is missing. As a result, when stowed the concave face of the lamp will extend below the surface of the left wing, and when deployed I will be without the benefit of the filament shield.

As noted in George's earlier post, the lamp was $13.90 from ASS, in contrast to $26.95 for the GE lamp from the same supplier. Postage to Alaska was a little more than $7. Even though I would prefer to have a flat faced lamp with the filament shield, I don't plan to send it back.

I think I may purchase a GE-brand 4522 sometime in the future when I can include it with a larger parts order, reducing the lamp's shipping cost significantly. At that point I'll place the Galaxy lamp in reserve status and not have to worry about being caught without an immediate replacement.

Looking on the bright side (no pun intended), because the Galaxy lamp has omitted the filament shield I don't have to worry about orientating the shield as debated in "Correct Orientation of 1948 Landing Light?." http://www.cessna170.org/phpBB2/viewtopic.php?t=4069

However, a little research on the Cessna 120-140 website answered the shield-orientation question for me.

Neal Wright has posted a pdf file in which he discusses design and technical features of the Grimes swing-down landing light used in some C120s, C140s, and in the 1948 C170. http://www.cessna120-140.org/forum/file ... s_2005.pdf

In the article, Mr. Wright indicates that he received information from someone who had acquired two never-used swing-down Grimes assemblies. Apparently, tags still glued to the lamp face stated:

"This light is supplied for installation in the left wing. The filament shield of the lamp is toward the pilot. To make this unit suitable for right wing installation merely rotate the sealed lamp 180 degrees."


Gordon Sandy
1948 C170
Juneau, AK

That is correct Gordon ,My Stinson V77 had retract landing lights and also my Cessna 195B .Both aircraft were equiped with sheilded lamps ,one in each wing ,with the shield on the side of the fuselage to provide protection from reflector glare.
Bob

If a shield prevents the filament from shining upon the reflector, which in-turn redirects it generally forward.... how does a shield placed at the fuselage/pilot's side of the filament prevent the light from being projected to the outer reflector where it is reflected towards the fuselage/pilot?

I've got Grimes on both sides of my 140 and the filament shields are outboard right now. I've only got about three night landings on them and I haven't been blinded by the glare yet. Haven't really noticed it at all. On the 140 the Grimes is angled outboard a few degrees by the cutout in the light bracket and I think that's enough to keep the light out of my eyes. Since it's not bugging me I'm not motivated to rotate the bulbs.

tye

If one should forget, the GE Landing Light 4509 (or like) is listed in the Type Certificate A-799 for the 170 as, item 304.

[quote] (a few lines back) (Firstly, landing lights are not a required piece of equipment on non-commercial operations, and secondly they are all virtually identical in every way.

Doesn't that mean (if its listed in the Type Certificate) it is required to be installed and working if it was installed at the factory, even for non-commerical?

Not if it's Optional Equipment. Example: The wheel pants are also listed.
So is the Javelin tank. etc etc.

George- How could the landing light, which was installed at the factory be considered optional equipment? It would be a tough argument with a maintenance or the FAA guy who also would have be looking for answers.

My question, if it is installed isn't it required to be airworthy and operational unless it is either placarded, commerical or non-commerical.