Flap handle button

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ralbrecht
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Joined: Fri Jul 15, 2022 10:15 am
Name: Romo Albrecht
Location: Ohio,Illinois
Aircraft Type: 140
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Flap handle button

Post by ralbrecht »

My flap handle button stays in when depressed. It won’t engage the flaps. Has anyone had this happen or does anyone have a drawing that illustrates how this mechanisms works.? It is a 1947 Cessna 140
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6643
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Name: John C
Location: KLCI, NH
Aircraft Type: 1946 C140/C90
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Re: Flap handle button

Post by 6643 »

Check out the parts manual available in the Resources -> Documents section of the main web site.

Parts 37 and 41 latch the lever in the correct spots.
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Flap handle.jpg
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ralbrecht
Posts: 2
Joined: Fri Jul 15, 2022 10:15 am
Name: Romo Albrecht
Location: Ohio,Illinois
Aircraft Type: 140
Occupation-Interests: Retired
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Re: Flap handle button

Post by ralbrecht »

The parts manual doesn’t show what part numbers for part 41 and 37. I sent your diagram to the mechanic, any idea where I could order the parts?
V529
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Aircraft Type: C-120
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Re: Flap handle button

Post by V529 »

Start with Preferred Air parts out of NW Ohio and/or Yingling (big Cessna dealer in Wichita)
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6643
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Joined: Tue May 01, 2018 7:00 am
Name: John C
Location: KLCI, NH
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Re: Flap handle button

Post by 6643 »

ralbrecht wrote: Tue Sep 10, 2024 4:58 pm The parts manual doesn’t show what part numbers for part 41 and 37.
Odd... Mine does.
15-37 0425121 Latch - Flap Lever
15-41 0425130 Spring - Flap Lever

Male sure they're broken before you waste time trying to find replacements.
8475
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Name: Dave Sprinkle
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Re: Flap handle button

Post by 8475 »

I had this problem. I inspected the latch (#37 in the diagram) and found a worn spot that would allow the latch to rotate too far and get jammed into the depressed position. I had a TIG welder apply a small amount of filler metal to build up the worn area. Then filed it back to the original profile. Now no more jams.
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