Rans S-12S Manuale utente
4600 Highway 183 Alternate Page 1 of 2
Hays, KS 67601
(785) 625-6346
Fax (785) 625-2795
Airworthiness Directive: 123
Date: June 14, 2001
Subject: S-12S Flow Fence
Compliance: Mandatory
Models Effected: All S-12S with Warp Drive Propellers
Cost: None
Parts Provided: Foam Rubber
Builder Supplied Parts: Super Glue
S-12S aircraft equipped with the 912 and 912S engine have the potential of a rough start. When this occurs, it is
possible for the tip of the propeller to contact the flow fence.
Please take the following steps to prevent damage to the flow fence and propeller:
1. Check if your aircraft has a 2” propeller spacer installed. A 2” spacer is required.
2. Using a high speed cutting tool, like a Dremel®, cut out a notch as shown inFigure 1. Drill holes in locations
shown to prevent cracking.
Figure 1
1/2"
MD4106
1"
3"
DRILL 1/8"
(4 PLACES)
RANS, Inc. -AD#123 –S-12S Flow Fence with Warp Drive Propeller –Page 2 of 2
2. Take the foam rubber provided, glue together the two pieces of foam to form a single block and insert into
notch. Use super glue to secure in place by squirting small amounts between the foam rubber and sheet
metal. See Figure 2.
Figure 2
MD4106
FOAM RUBBER
SUPER GLUE BETWEEN METAL
AND FOAM RUBBER
Description Part Number Qty
5/8" x 2” x 1” Black Foam Rubber ----- 2
Thank you for your attention to this matter. Hopefully we have not inconvenienced youtoanygreat degree. Flysafe!
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