Whelen Rotating Beacon 337

How to keep the Cessna 170 flying and airworthy.

Moderators: GAHorn, Karl Towle, Bruce Fenstermacher

Post Reply
User avatar
n2582d
Posts: 3015
Joined: Mon Apr 29, 2002 4:58 am

Whelen Rotating Beacon 337

Post by n2582d »

I'm working at getting my paperwork in order. I need a copy of a 337 form showing the installation of a Whelen rotating beacon on the top of the fuselage just aft of the trailing edge of the wings. Anybody out there that can help with this? I'll be installing wingtip strobes but want to keep the rotating beacon for nostalgia.
Gary
User avatar
canav8
Posts: 1006
Joined: Thu Sep 25, 2008 2:34 pm

Re: Whelen Rotating Beacon 337

Post by canav8 »

Hey Gary, I think I can. I will check the paperwork for 2713D when I get home day after tomorrow. I believe I have what your looking for. Doug
52' C-170B N2713D Ser #25255
Doug
User avatar
GAHorn
Posts: 21309
Joined: Fri Apr 12, 2002 8:45 pm

Re: Whelen Rotating Beacon 337

Post by GAHorn »

A 337 describing such an installation in another airframe will not help you in documenting your own, even similar, installation unless all you wish to have is a way to "word" it. There is no field approval or STC required to install a rotating beacon on the fuselage of the aircraft. The reason a 337 is required is for the purpose of describing the alteration.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
User avatar
n2582d
Posts: 3015
Joined: Mon Apr 29, 2002 4:58 am

Re: Whelen Rotating Beacon 337

Post by n2582d »

Doug, Thanks for your offer. I'll send you an email address via PM.
gahorn wrote: There is no field approval or STC required to install a rotating beacon on the fuselage of the aircraft.
My PMI feels differently as does Whelen. Take a look at the most similar installation now available from Whelen.
Whelen Beacon Installation.pdf
gahorn wrote:A 337 describing such an installation in another airframe will not help you in documenting your own, even similar, installation unless all you wish to have is a way to "word" it.
Here is a quote from AC 43-210 that seems to disagree with this:
ASI approval.jpg
You do not have the required permissions to view the files attached to this post.
Gary
User avatar
Brad Brady
Posts: 745
Joined: Fri Feb 29, 2008 2:54 am

Re: Whelen Rotating Beacon 337

Post by Brad Brady »

n2582d wrote:Doug, Thanks for your offer. I'll send you an email address via PM.
gahorn wrote: There is no field approval or STC required to install a rotating beacon on the fuselage of the aircraft.
My PMI feels differently as does Whelen. Take a look at the most similar installation now available from Whelen.
Whelen Beacon Installation.pdf
gahorn wrote:A 337 describing such an installation in another airframe will not help you in documenting your own, even similar, installation unless all you wish to have is a way to "word" it.
Here is a quote from AC 43-210 that seems to disagree with this:
ASI approval.jpg
I'm going to agree with George, But if you can get something from Whelen. GO with it......Brad
User avatar
GAHorn
Posts: 21309
Joined: Fri Apr 12, 2002 8:45 pm

Re: Whelen Rotating Beacon 337

Post by GAHorn »

The quote from AC 43 is relative to a field approval. IF you wish to obtain a field approval then those are good words, but I still do not believe this installation requres a field approval.

Even tho' a mfr (Whelen for example) might like to absolve themselves of all responsibilty of any installation of their product, that does not mean it requires any approval beyond the owner's desire to have it installed, as long as the work is performed in an airworthy manner by a qualified repairman. (AP/IA for example.) IMO
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
User avatar
n2582d
Posts: 3015
Joined: Mon Apr 29, 2002 4:58 am

Re: Whelen Rotating Beacon 337

Post by n2582d »

Brad Brady wrote: I'm going to agree with George, But if you can get something from Whelen. GO with it......Brad
Brad,

In looking at what qualifies as a major alteration in FAR 43 appendix A, I too would think this is a minor alteration. But it is not mine, yours, or George's opinion that matters. It's the opinion of the FAA PMI at my local FSDO that counts. If he wants it installed with a 337 that's the way I'll do it. It'll avoid a problem down the road when some persnickety, dot the i's, cross all the t's, legalistic inspector--you know, someone like Bluelder :wink: -- looks at the airplane and decides that a logbook entry is insufficient for installing a rotating beacon.
Gary
User avatar
blueldr
Posts: 4442
Joined: Thu May 02, 2002 3:16 am

Re: Whelen Rotating Beacon 337

Post by blueldr »

I've always been of the opinion that cluttering a log book with a lot of writing can only lead to more questions. It used to be routine to get relatively quick approvals of most resasonable stuff on forms 337 but since the suduko (sp?) puzzles started appearing in the local daily newspapers,that process has stopped.
With the advent of direct deposit, they don't even have to sign their pay checks.
BL
User avatar
GAHorn
Posts: 21309
Joined: Fri Apr 12, 2002 8:45 pm

Re: Whelen Rotating Beacon 337

Post by GAHorn »

n2582d wrote:
Brad Brady wrote: I'm going to agree with George, But if you can get something from Whelen. GO with it......Brad
Brad,

In looking at what qualifies as a major alteration in FAR 43 appendix A, I too would think this is a minor alteration. But it is not mine, yours, or George's opinion that matters. It's the opinion of the FAA PMI at my local FSDO that counts. If he wants it installed with a 337 that's the way I'll do it. It'll avoid a problem down the road when some persnickety, dot the i's, cross all the t's, legalistic inspector--you know, someone like Bluelder :wink: -- looks at the airplane and decides that a logbook entry is insufficient for installing a rotating beacon.
I did not say it did not require a 337. I said it did not need an STC or Field approval.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
User avatar
n2582d
Posts: 3015
Joined: Mon Apr 29, 2002 4:58 am

Re: Whelen Rotating Beacon 337

Post by n2582d »

gahorn wrote:I did not say it did not require a 337. I said it did not need an STC or Field approval.
Sorry George, I assumed by that statement you meant that it was a minor alteration (which is what I think it is) rather than a major alteration.
Gary
j3pup
Posts: 190
Joined: Sun Nov 01, 2009 11:53 pm

Re: Whelen Rotating Beacon 337

Post by j3pup »

I think I have these on my aircraft, and I believe the paperwork is in the logs for what its's worth. PM me if I can help...
Post Reply
Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.