Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 693 / 1956

PAGE 19
Feb 28/07
30-10-00
3J5
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
F. Repair Procedures.
CAUTION: REVIEW REPAIR LIMITS, ABOVE, TO DETERMINE IF REPAIR IS PERMITTED.
See Chart 2 for materials and supplies. Kits and part numbers referenced below are Goodrich
Corporation, unless otherwise noted.
NOTE: Repair of damage that does not leak air is not mandatory.
(1) Scuff (Surface) Damage: This type of damage will be most commonly encountered and,
fortunately, it is not necessary in most cases to make a repair. Surface damage that leaks air,
but does not cut inflatable tube fabric, and does not exceed 4" X 9" should be repaired with
P/N 74-451-AA patch kit as follows:
CAUTION: PATCH ADHESION IS TEMPERATURE SENSITIVE. IF TEMPERATURE IS
UNDER 50°F (10°C), WARM DEICER SURFACE PRIOR TO APPLYING
PRIMER, AND WARM INSTALLED PATCH WHILE DRYING. TO WARM, HOLD
PLASTIC BAG FILLED WITH HOT WATER ON DEICER SURFACE, AND ON
INSTALLED PATCH. IF SURFACE AND INSTALLED PATCH ARE NOT WARMED,
PATCH MAY NOT ADHERE.
CAUTION: PATCHES HAVE A ONE-WAY STRETCH ACROSS WIDTH OF PATCH SO
PATCH CAN STRETCH WHEN DEICER INFLATES. PATCH MUST BE
INSTALLED WITH LENGTH PARALLEL TO DEICER TUBES. FAILURE TO DO
SO MAY RESULT IN PATCH LIFTING WHEN DEICER INFLATES.
CAUTION: PREPARATION OF DEICER SURFACE TO BE PATCHED IS CRUCIAL FOR
GOOD PATCH ADHESION. FAILURE TO REMOVE, SHINEMASTER®
COSMETIC TREATMENT, WAX, GREASE, OIL, ICEX® II, AND OTHER
CONTAMINANTS COMPLETELY, CAN RESULT IN POOR PATCH ADHESION.
(a) Trim standard patch sizes to accommodate small areas of damage, leaving at least 1/2
inch beyond damaged area. Mark stretch direction on patch before trimming, so trimmed
patch is installed with stretch in same direction as tube inflation.
(b) Clean deicer surface to be patched with detergent and hot water, using lint free cloths to
remove dirt, grease and cosmetic coatings. Repeat until oil and silicone contamination is
removed.
(c) Use buffing shield or patch as template to outline damaged area. Buff deicer surface with
medium grit emery cloth or equivalent.
(d) Wipe deicer surface with cloth dampened with Toluene or alcohol and let dry.
(e) Apply one coat of primer to deicer surface. Let dry to touch (5-10 min.).
(f) Remove paper backing from patch and press patch on primed deicer surface. Roll with
rubber roller.
(g) Let dry 30 minutes before inflating deicer.
(h) Patch refurbishment:
1 To replace loose or damaged patch, remove old patch by peeling off deicer.
2 Remove adhesive remaining on deicer with Scotch Brite TM soaked in alcohol.
3 Install new patch.