Instructions for Continued Airworthiness

Localized heat may be required to remove the jury strut clamps. Care must be taken in removing these items. Discard front jury strut clamp. Retain rear jury strut clamp for re-installation. 2 Remove the front strut. Inspect hardware, retain if in airworthy condition. 3 Install appropriate (to your attach angle) replacement front wing strut using hardware retained. Use punch pin to secure bottom strut clevis. Install P/N:AF-MA-A815 or AF-MA-A815A Top Hardware: AN5-13A, AN960-516, AN365-524, Qty as required 4 Remove rear strut noting amount of adjustment thread exposed. Inspect hardware, retain if in airworthy condition. 5 Install rear wing strut matching the exposed threads to that in step 4 above. It is recommended to use a thread corrosion protection substance on the rear strut top threads. See Introduction for details. Place AN960-516 washers on AN5 bolt at bottom fitting to assure correct thread grip. 6 Adjust the rear strut adjustment threads such that the wing washout is 1 5/16" Increasing the length of the exposed threads will decrease the washout angle. See figure 2.1 7 Install Front Jury Strut Clamp such that the jury struts are plumb. The installer is responsible in making the proper bends to the jury strut clamp. P/N AF 892 This clamp must be bent such that the jury strut vertical tube is aligned and centered on the front strut thickest portion. It is possible to make fine height adjustments to the jury struts at the threaded bolts on the underside of the wing. Utilize airframe adjustments in jury strut to align with new strut so there is no binding. 8 Repeat steps 1 - 7 for other side. 9 Make appropriate notations in aircraft logs Dihedral Left Wing: ______________° Dihedral Right Wing: ______________° Washout Left Wing" ______________in Washout Right Wing" ______________in Aircraft Wing after installation of replacement struts. Northern Airframes LLC, d/b/a Airframes Alaska LLC AFI-ICA-TCSTRUT Instructions for Continued Airworthiness April 5, 2011 REV C PAGE 8 of 11 Weight and Balance Change in the weight and balance information will vary with aircraft. The weights of the replacement struts are ; Left Front Strut: 10 lbs 8 oz. Left Rear Strut: 9 lbs 12 oz. Front Jury Strut Clamp: 2 oz. Any net change after replacement in obtained by subtracting the removed weight from the installed weight. All centers of gravities for components will be unaltered. Datum is the leading edge of the wing. Make appropriate changes in aircraft logs. Northern Airframes LLC, d/b/a Airframes Alaska LLC AFI-ICA-TCSTRUT Instructions for Continued Airworthiness April 5, 2011 REV C PAGE 9 of 11 The following figures are aids in determining the correct dihedral and washout angles. Figure 2.1: Three-view of Taylorcraft Aircraft  Aircraft shown in longitudinal and lateral level attitude.  Surface of stabilizers are parallel to thrust line of aircraft.  Datum is leading edge of wing. Raise tail until horizontal stabilizer top surface is level. ~36" First inboard rib (~ 26") from tip. See figure 2.2 Typical both sides. Service Point, top attachment rear strut Northern Airframes LLC, d/b/a Airframes Alaska LLC AFI-ICA-TCSTRUT Instructions for Continued Airworthiness April 5, 2011 REV C PAGE 10 of 11 If offset is used to space level below wing add the offset dimension to 1 5/16". Vertical distance between bottoms of wing, from the rear to front spar, should be for the correct wash out of the wing. Figure 2.2: Wing section at rib approximately 26" from tip. LEVEL ~ 30" 1 5/16 " Northern Airframes LLC, d/b/a Airframes Alaska LLC AFI-ICA-TCSTRUT Instructions for Continued Airworthiness April 5, 2011 REV C PAGE 11 of 11 4.0 PERIODIC INSPECTION REQUIREMENTS The following inspections are required as indicated. Inspections Description 100 hr Annual Special Front and Rear Strut Inspection Visual inspection of strut lower, jury strut, and upper connection. Special attention to; o weld lines for cracking. o fretting or corrosion between bolt clevis and wing fuselage. o Paint or metal wear at the jury strut attachment. X X Front and Rear Strut Inspection Inspect rear strut threads for play, cracking and corrosion. X Front and Rear Strut Inspection Inspect strut for damage at jury strut. Hard Landing 5.0 REVISIONS Records of purchasers will be maintained by Northern Airframes LLC. Northern Airframes LLC. will contact purchasers with changes or revisions.