mag switch key

How to keep the Cessna 170 flying and airworthy.

Moderators: GAHorn, Karl Towle, Bruce Fenstermacher

Post Reply
User avatar
MoonlightVFR
Posts: 624
Joined: Sun Jan 02, 2005 5:55 pm

mag switch key

Post by MoonlightVFR »

I have misplaced the last key for my mag switch.

There is no documentation with any mention of key.

How can I easily solve this dilemma?

1954 C170B , s.n.24633 del. 7-12-54. N2890C.
gradyb, '54 B N2890C
User avatar
edbooth
Posts: 498
Joined: Wed Nov 24, 2004 3:03 am

Re: mag switch key

Post by edbooth »

Have a 170 flyin near your place. If 6-10 170's show up, it's fairly certain that one of them will have a key that also fits yor plane. Or locksmith ?
Ed Booth, 170-B and RV-7 Driver
User avatar
daedaluscan
Posts: 497
Joined: Fri Apr 20, 2012 7:03 pm

Re: mag switch key

Post by daedaluscan »

I have not tried in the mag, but pretty much any key will open my door lock:)
Charlie

1956 170B C-GDRG #27019
User avatar
Joe Moilanen
Posts: 605
Joined: Sun Dec 28, 2003 5:45 am

Re: mag switch key

Post by Joe Moilanen »

They only made so many different ones, lost mine a while back and the FBO brought a ring of keys out and was going in no time. Didn't charge me for the key because he had several identical ones.

Joe
flyboy122
Posts: 324
Joined: Mon Apr 21, 2014 2:30 am

Re: mag switch key

Post by flyboy122 »

Have you tried contacting Cessna? They might have those records. Otherwise you might be able to find some numbers on the switch and call the switch mfg or google them. Finally, if you are reasonably handy, search "lock impressioning" on the internet. I used to work in a locksmithing business and this really does work, but it does take a bit of know how.

That being said, I'm with the other guys. Chances are another plane's key will work. My plane has a Gerdes switch, which is pretty common. There are probably a half dozen in various planes on the airport or in the FBO's scrap bin.

Why take the key out in the first place? If I wanted to steal a plane, a missing key wouldn't be much of a deterrent.

DEM
User avatar
daedaluscan
Posts: 497
Joined: Fri Apr 20, 2012 7:03 pm

Re: mag switch key

Post by daedaluscan »

Joe Moilanen wrote:They only made so many different ones, lost mine a while back and the FBO brought a ring of keys out and was going in no time. Didn't charge me for the key because he had several identical ones.

Joe
was that at Kelso Joe?

I stop there just as he is such a friendly guy. Arrived last fall for fuel on a hot day and he comes out to the fuel pump with a bottle of cold water for me - how kind is that!
Charlie

1956 170B C-GDRG #27019
User avatar
cessna170bdriver
Posts: 4115
Joined: Mon Apr 22, 2002 5:13 pm

Re: mag switch key

Post by cessna170bdriver »

I seem to remember an airworthiness directive 20+ years ago to replace some mag switches because the key could be removed in the BOTH position. That, or normal wear and tear, would lead me to believe that there are very few 170s out there with the original mag switches, so even if Cessna kept the records it's unlikely that information would be of any use.

Any locksmith worth his keep should be able to make a key, and should even be able to match the mag switch to the door. I plan to ask Del Lehmann to have this done on mine after he upgrades the door latches for me.
Miles

“I envy no man that knows more than myself, but pity them that know less.”
— Thomas Browne
User avatar
Joe Moilanen
Posts: 605
Joined: Sun Dec 28, 2003 5:45 am

Re: mag switch key

Post by Joe Moilanen »

daedaluscan wrote:
Joe Moilanen wrote:They only made so many different ones, lost mine a while back and the FBO brought a ring of keys out and was going in no time. Didn't charge me for the key because he had several identical ones.

Joe
was that at Kelso Joe?

I stop there just as he is such a friendly guy. Arrived last fall for fuel on a hot day and he comes out to the fuel pump with a bottle of cold water for me - how kind is that!
It was at Bellingham where I lost the key while visiting my Daughter up there, she was going to WWU. Denny at my home base at Kelso is a Great guy!

Joe

Joe
User avatar
GAHorn
Posts: 21295
Joined: Fri Apr 12, 2002 8:45 pm

Re: mag switch key

Post by GAHorn »

While door keys are limited in differences....magneto switches are not... there are numerous differences....but any locksmith should be able to re-key it for you.
'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. ;)
bagarre
Posts: 2615
Joined: Thu Sep 30, 2010 11:35 pm

Re: mag switch key

Post by bagarre »

My mag key and door key are the same.
User avatar
edbooth
Posts: 498
Joined: Wed Nov 24, 2004 3:03 am

Re: mag switch key

Post by edbooth »

bagarre wrote:My mag key and door key are the same.
Mine is also. In fact the key also works in the baggage door I installed about 30 years ago.
Ed Booth, 170-B and RV-7 Driver
User avatar
mit
Posts: 1067
Joined: Wed May 01, 2002 1:54 am

Re: mag switch key

Post by mit »

Why take it out?
Tim
User avatar
n2582d
Posts: 3013
Joined: Mon Apr 29, 2002 4:58 am

Re: mag switch key

Post by n2582d »

Grady,
If you find a key that will slide into the lock (but not open it) you might be able to use SL 65-3 to make all the locks work for that key.
Gary
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.