206-04-102 2004 Subsidiary Textron Inc. DATE PAGE MODEL

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206-04-102 2004 Subsidiary Textron Inc. DATE PAGE MODEL

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DATE
206-04-102 2004
Subsidiary Textron Inc.
DATE PAGE
MODEL AFFECTED:
206B TH-67
SUBJECT:
INSIDE DOOR HANDLE ASSEMBLY 206-031620-101, INSPECTION REWORK
HELICOPTERS AFFECTED:
Model 206B helicopters serial number 3567 through 4577. [Model 206B helicopters serial numbers 4578 subsequent will have intent this bulletin accomplished prior delivery.] Model TH-67 helicopters serial numbers 5101 through 5284. [Model TH-67 helicopters serial numbers 5285 through 5305 covered Aeronautical Accessories Technical Bulletin AA-04055.] [Model TH-67 helicopters serial numbers 5306 subsequent will have intent this bulletin accomplished prior delivery.]
COMPLIANCE:
next annual inspection, later than December 2004.
DESCRIPTION: Field reports reveal that spring securing inside handle assembly door latching mechanism short. This condition damage bore handle crossbar eventually make handle turn freely. result handle become disconnected from latching mechanism. Part this bulletin gives instructions inspect each four inside handle proper spring length.
APPROPRIATE ENTRY SHOULD MADE AIRCRAFT LOGBOOK UPON ACCOMPLISHMENT OWNERSHIP AIRCRAFT CHANGED PLEASE FORWARD OWNER
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Part this bulletin gives instructions rework handle assembly install longer spring defined engineering drawing. APPROVAL: engineering design aspects this bulletin Transport Canada Civil Aviation approved.
MANPOWER: Approximately man-hour required complete Part this bulletin. addition, approximately man-hours required accomplish Part this bulletin each door handle assembly, required. Man-hours based hands-on time, vary with personnel facilities available.
WARRANTY: Owners/Operators 206B TH-67 helicopters comply with instructions outlined this bulletin will receive 100% warranty credit replacement parts contained "Required Material" section this bulletin. Receive This Credit: Purchase required parts from approved BHTI supply source. Comply with this bulletin later than December 2004. Submit completed malfunction report BHTI Warranty later than days after completion bulletin. Note: Customers that fail comply with this bulletin after December 31,2004 eligible special warranty provisions listed above.
MATERIAL: Required Material: following material required accomplishment this bulletin obtained through your Bell Helicopter Textron Supply Center. Part Number NAS561C4-8 Note Nomenclature SPRING Quantity (see note
Supersedes MS171526 which used alternate.
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Consumable Material: following material required accomplish this bulletin, require ordering, depending operator's consumable material stock levels. This material obtained through your Bell Helicopter Textron Supply Center. Part Number MIL-PRF-81733 299-947-100TY2CL2G50 SPECIAL TOOLS: None required WEIGHT BALANCE: affected ELECTRICAL LOAD DATA: affected REFERENCES: BHT-206A/B series-IPB Illustrated Parts Breakdown BHT-206A/B series-MM Maintenance Manual PUBLICATIONS AFFECTED: None affected ACCOMPLISHMENT INSTRUCTIONS: Part INSPECTION INSIDE DOOR HANDLES Refer Figure Start with four cabin doors. -NOTENote orientation handle crossbar (2). spring installed from bottom side. crossbar installed topside necessary separate crossbar from handle assembly accomplish either Part Part Nomenclature SEALANT ADHESIVE Quantity Reference C-251 C-317
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Remove retain three screws holding handle escutcheon door structure. Turn crossbar bottom side Measure insertion depth spring into crossbar bore.
-NOTEThe appropriate spring NAS561C4-8 .500 .015 inch (12.7 .381 length. next longer shorter sizes increments .062 inch (1.574 mm). MS171526 .500 .015 inch (12.7 .381 length used alternate. approximately 0.110 inch (2.794 more below surface crossbar (2), rework handle assembly accordance with Part this bulletin. approximately 0.109 inch (2.768 less below surface crossbar (2), following: Prepare smooth flat surface bench vise with layer duct tape protection. bottom side crossbar against protected bench vise surface. Using 3/32 inch (2.38 diameter punch small hammer, spring down until bottoms into bore.
Measure again insertion depth spring into crossbar bore. approximately 0.110 inch (2.794 more below surface crossbar, rework handle accordance with Part this bulletin. -NOTESeveral TH-67 helicopters prior 5285 have handle assemblies modified black anodized finish Premier Aviation Texas prior delivery Army. spring installed handle crossbar MS171527 having overall length .562 .015 inch (14.274 .381 mm). such case, when fully inserted, spring will more less flush with bottom side crossbar. Moreover, pilot hole visible side crossbar. Both these conditions acceptable Bell Helicopter engineering.
206-04-102 Page
insertion depth .048 .078 inch (1.219 1.981 indicates that appropriate spring length been used. Therefore, handle assembly reinstalled with retained hardware returned service. Repeat above procedure with other three handle assemblies. handle assemblies proven have proper spring installed, make entry helicopter records indicating this bulletin been complied with.
Part REWORK INSIDE DOOR HANDLES
-NOTEPlace protective barrier material (i.e. cardboard, tape) between vise jaws handle crossbar (2). Avoid damaging crossbar over tightening vise. Secure handle crossbar bench vise, bottom side exposing spring bore. Using drill inside diameter spring guide, drill .063 inch (1.60 pilot hole through crossbar wall. Using drill bit, from topside, open pilot hole drilled preceding step .098 inch (2.489 mm). De-burr slightly chamfer edges hole. Using 3/32 inch (2.38 diameter straight punch, drive spring bottom side crossbar. Turn crossbar upside down vise secure. Take care over tighten vise jaws. From bottom side crossbar, drive spring NAS561C4-8 crossbar bore until bottoms out. Spring MS171526 used alternate. insertion depth should approximately .063 .015 inch (1.60 .381 mm). Prepare small quantity adhesive C-317 plug pilot hole drilled through side handle crossbar (2). Fair with adjacent surface allow cure. Color cured adhesive should closely match finish crossbar. Prepare small quantity sealant C-251 plug bore bottom surface crossbar. Allow sealant cure.
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Reinstall handle assembly door oriented shown Figure Ensure handle spring loaded against door with nylon button contacting door surface. Using three screws retained step Part attach escutcheon door. Repeat above procedure other three handle assemblies required. Make entry helicopter records indicating this bulletin been complied with.
206-04-102 Page

206-04-102 2004 Subsidiary Textron Inc. DATE PAGE MODEL

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