Service Bulletin - Aileron Hinge Bracket Inspection

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Single Engine ~CessnaA Toxtton Com " Service Bulletin I October 3, 2012 TITLE AILERON HING E BRACK ET INSPECTION EFFEC TIVI TY Model Year 190 1948 thru t 953 190 1948 thru 1953 195 1948 thru 1953 195 1948 thru 1953 195A 1948 thru 1953 195A 1948 thru 1953 1958 1948 thru 1953 1958 1948 thru 1953 PURPOSE Serial Numbers 7004 thru 7999 16000 thru 16 183 7004 thru 7999 16000 thru 16183 7004 thru 7999 16000 thru 16183 7004 thru 7999 16000 thru 16183 SE804-1 Revision 1 To inspect the inboard aileron hinge brackets for corrosion and cracks. If corrosion or cracks are found, the h in ge brackets shall be replaced as directed in this Service Bulletin. Non-compliance with this Service Bulle tin may allow corrosion or cracks to go undetected which could result in less than the designed structural integr it y of the aileron hinge brackets. COMPLIANCE Mandatory; shall be accomplished as a part of the next 100 hour or annuaV12 month inspection whichever occurs first and each subsequent 100 hour or annua l/ 12 month inspection thereafter except as noted below. NOT E: Installation of the new 0322709 and 0322 70 9-1 machined Aluminum h inge brackets will delete the repet itive special inspection requirement. I NOTE: If the aileron hinge brackets have been replaced with Aluminum brackets and if in compliance with SE804-1 Original Issue, compliance with SEB04-1 Revision 1 is not required . APPROVAL FAA approval has been obtained on technical data in this publication that affects airpl ane type design. IOriginal lssu<:!: April 26. 2004 Page 1 of 7 To obtain satisfactory resulls. procedures spe:ified in this pubhcauon must be accompliShed in accordance with accepted methods and preva illllg govem :n en • regulations Cessna Aircraft Com pa ny ca nnot bo responsible for the quality of w ork performed in accompli shing tile requ:rements of this publication. Cessn~ A ircra ft Ccmpany, C u~!o mer Se rv~ct~ . P.O. Box 7106. Wtchlfa . Ka Mu &1277. U.S.A. (316) 517-5800. Facsimile (316)5 17-7271 www c&.ts1asup.port COJn COP YFI G HT 4:> 2004 MATERIAL I The following are available from Cessna Service Parts and Programs through an appropriate Cessna Authorized SeN ice Facility. Part Numbe r Desc riQtion Qt~/Aiq2l a ne 0322709 Hinge Bracket, 1 (if required) Left 0322709-1 Hinge Bracket, 1 (if required) Right MS21044N4 Nut 4 MS21044N3 Nut 10 U074093 Alodine 1132 (as required) Marker K00091 2 Epoxy Primer (as required) ACCOMPLISHMENT INSTRUCTIONS Change In Weight And Balance Mode l . . . . . . . . . . . . . . • . . . • . . . . . . . . • . . 190/195 We i ght C han ge Negligible Material I nformat i on The following parts may be necessary: New PIN Quantity Des cripti on 0322709 1 (as necessary} Aileron Hinge Bracket (Left) 0322709-1 1 (as necessary) Aileron Hinge Bracket (Right) I MS2 104 4N4 4 Nut MS21 044N3 10 Nut I Page 2 Old PIN Same Same Same Same Dispos it i on Discard Discard Discard Discard SEB04-1 Revisi on 1 October3, 20 12 I The materials below, or equivalent may be necessary. NAME NUMBER MANUFACTURER USE To uch-N-Prep Alodine 1132 Parker Amchem 32100 To apply to bare metal. (color chemical Stephenson Highway Madison film treatment) Heights. Michigan 48071 Corrosion 513 X 419910 X 942 PRC-DeSoto International To apply to bare metal. Resistant 5430 San Fernando Road Primer Glendale, CA 91209 1. (Ref er to Figure 1. Sheet 1.} Electrically ground the airplane and turn all switches to the "OFF" position. II external power is connected to the airplane, disconnect external power from receptacle, 2. Remove the battery access panel and disconnect the airplane battery. (Refer to the Cessna 190 & 195 Parts Catal og.) 3. Attach maintenance warning tags to the banery and external power receptacle with the following instructions: 00 NOT CONNECT ELECTRICAL POWER - MAINTENANCE IN PROGRESS. 4. Measure and record the range of up and down travel of both ailerons. NOTE: The aileron range of travel information will be needed to install the ailerons. NOTE: The specified range of up travel is 25 " and the down travel is 25°. 5. Remove the ailerons. (Refer to the Cessna 190-195 Parts Catalog.) A. Disconnect the aileron pushrod from the ai!eron on each wing. ( 1) l<eep the bolts and washers if serviceable. (2) Discard the nuts. B. Remove the aileron attach bolts and wasners from the inboard and outboard aileron brackets on each wing and remove the ailerons. (1) l<eep the bolts and washers if serviceable. (2) Discard the nuts. 6. ( l ~efe r to Fi gure 1, Sheet 1.} Remove the inboard 0322709 (left) and inboard 0322709-1 (right) Aileron Hinge Brackets from the wing n~ar spar. (Refer to the Cessna 190 & 195 Parts Catalog.) A. Keep t11e bolts and washers if serviceable. B. Discard the nuts. CAUTION: DO NOT USE A MECHANICAL METHOD TO REMOVE THE PAINT FROM MAGNESIUM AILERON HINGE BRACKETS. 7. Remove the paint from the 0322709 and 0322709-1 Aileron Hinge Brackets. 8. Do a visual inspection of the 0322709 and 0322709-1 Aileron Hinge Brackets for corrosion and cracks. NOTE: T~e orig inal and o:der replacement inboard aileron hinge brackets were made of Magnesium which ha s a greater potential to corrode or crack than aluminum. A. Lo 'JI\ on the aileron hinge brackets lor identification as follows: (1) Magnesi um forged brackets have a 0822605-497 or a 0322707-2 mark on them. (2 } Aluminum forged brackets have a 0822605-499 mark on them. I SEB0 4·1 Revision 1 October 3, 2012 Page 3 I I I (3} If the brackets have no marks, they are aluminum. B. If corrosion or cracks are found on the 0322709 and/or 0322709-1 Aileron Hinge Bracket, replace the bracket with a new Aluminum aileron hinge bracket as necessary. NOTE: The new replacement 0322709 and 0322709- 1 Aileron Hinge Brackets are A lumi num. (1 ) Apply Alodine and corrosion resistant primer to the new aileron hinge bracket part and paint to match the airplane finish.