Piper Service Bulletin No. 1041

PA-34-220T (Seneca IV) 3448038 through 3448079, 3447001 through 3447029 PA-34-220T (Seneca V) 3449001 through 3449168 PA-36-285 (Pawnee Brave) 36-7360001 through 36-7660135, PA-36-300 (Pawnee Brave) 36-7760001 through 36-8160023 PA-36-375 (Pawnee Brave) 36-7802001 through 36-8302025 PA-38-112 (Tomahawk) 38-78A0002 through 38-82A0124 PA-39 (Twin Comanche) 39-1 through 39-155 PA-40 (Arapaho) 40-7400002 PA-42/42-720 (Cheyenne III/IIIA) 42-7800001 through 42-7800002, 42-7801003 through 42-8301002, 42-5501003 through 42-5501060 PA-42-1000 (Cheyenne 400LS) 42-5527001 through 42-5527044 PA-44-180 (Seminole) 44-7995001 through 44-8195026, 4495001 through 4495013, 4496001 through 4496036 PA-44-180T (Seminole) 44-8107001 through 44-8207020 PA-46-310P (Malibu) 46-8408002 through 46-8608088, 4608001 through 4608140 PA-46-350P (Malibu Mirage) 4622001 through 4622200, 4636001 through 4636284 PAGE 4 of 4 SERVICE BULLETIN NO. 1041 MATERIAL REQUIRED: N/A AVAILABILITY OF PARTS: N/A EFFECTIVE DATE: This Service Bulletin is effective upon receipt. SUMMARY: Applicable Factory Participation is limited to new aircraft in warranty at the time of compliance. Factory Participation will remain in effect for a period of time not to exceed 180 days from the date of this Service Bulletin. Please contact your Factory Authorized Piper Service Facility to make arrangements for compliance with this Service Bulletin in accordance with the compliance time indicated. Please contact your Factory Authorized Piper Service Facility to make arrangements for compliance with this Service Bulletin in accordance with the compliance time indicated. NOTE: If you are no longer in possession of this aircraft, please forward this information to the present owner/operator and notify the factory of address/ownership corrections. Changes should include aircraft model, serial number, current owner's name and address. Corrections/changes should be directed to: THE NEW PIPER AIRCRAFT, INC. Attn: Customer Services 2926 Piper Drive Vero Beach, FL 32960 AirborneAir & Fuel Products Service Letter Service Letter Number: 56 Date: 4/19/00 Subject: Inspection and Cleaning of Airborne Air Filter Elements. Applicability: Airborne Air Filter Elements with the following part numbers/date codes which have not been inspected per this service letter as identified in step number seven (7) of the procedure listed below. from Airborne between l/l/99 and 3/31/00. These components were shipped Item Part Number (P/N) Air Filter Element D9-14-3 (See Note) Date Code IAR thru 12AR and IAT thru 3AT Air Filter Element Air Filter Element D9-14-5 (See Note 2) D9-18-1 (See Note 3) IAR thru 12AR and IAT thru 3AT IAR thru 12AR and IAT thru 3AT Note 1: The D9-14-3 is used in the 1J2-2 Air Filter Assembly. Note 2: The D9-14-5 is used in the 1J2-1, 1J2-5 and 1J2-6 Air Filter Assemblies. Note 3: The D9-18-I is used in the 1J7-1 and 1J7-2 Air Filter Assemblies. Background: Field reports indicate the possibility that loose particles of a black elastomeric compound may not have been completely removed from these air filter elements during the manufacturing process. Recommendation: Within the next thirty days, inspect/clean the air filter elements listed above and also the associated pneumatic system plumbing per the following procedure: 1) Remove the affected air filter element from aircraft per the instructions outlined in the appropriate maintenance/service manual provided by the airframe manufacturer. 2) Inspect the inner diameter of the black end piece(s) of these elements for flashing (Figure 1). Remove all flashing using a sharp knife. Caution: Do not cut the paper filter portion of the element. (Page 1 of 4) Aerospace Parker Hannifin Corporation . Airborne Division 711 Taylor Street l Elyria, Ohio 44035 l 440 284-6300 . Fax: 440 322-5625 Technical Service Hotline: l-800-382-8422 l E-mail: techhelp@parker.com l www.parker.com/airborne Airborne Air & Fuel Products Service Letter Number: 56 (Continued) 3) Tap the element lightly on a clean work surface in order to remove any loose particles from between the pleat tips on the inside of the paper filter (Figure 2). 4) Inspect the inner diameter (pleat tips) of the paper filter for black residue (Figure 3). Remove all loose residue using the “sticky side” of a strip of masking tape attached to the end of a blunt instrument. 5) Seal one end of the element using a plug. Then, use a heavy-duty vacuum cleaner (e.g. shop vac) to remove all loose particles from inside the element. 6) Thoroughly inspect all internal surfaces of the element for any loose particles. Remove any remaining loose particles using any combination of the above steps. Note: The wicking of black potting material onto pleats of paper filter is acceptable (Figure 4). 7) Identify the element as having been inspected per this service letter by permanently marking (ink stamp, magic marker, etc.) the number of this service letter (“56”) on an exterior surface of the element. Note: This marking should be clearly visible once the element is installed back into the aircraft. 8) Remove the applicable pneumatic system hoses/lines as outlined below: Vacuum System: Hoses/lines between system inlet filter and gyro instruments. Pressure System: Hoses/lines between system inlet filter and dry air pump. 9) Clean hoses/lines using a heavy-duty vacuum cleaner (e.g. shop vac) and then reinstall. 10) Reinstall the clean air filter element per the instructions outlined in the appropriate maintenance/service manual provided by the airframe manufacturer. 11) Perform an operational check of the complete pneumatic system per the instructions outlined in the appropriate maintenance/service manual provided by the airframe manufacturer. 12) Any questions regarding this service letter should be directed to Airborne’s Customer Support Team as follows: Toll Free Phone Number: 800-382-8422 Direct Phone Number: 440-937-I 315 Fax Number: 440-937-5409 E-Mail: techhelp@parker.com (Page 2 of 4) Aerospace AirborneAir & Fuel Products REMOVE ANY FLASHING REMOVE ANY PARTICLES FROM BETWEEN PLEATS FIGURE 2 (Page 3 of 4) Aerospace Airborne Air & Fuel Products ,REMOVE LOOSE RESIDUE ON PLEAT TIPS FIGURE 3 WICKING OF POTTING ONTO PLEATS IS ACCEPTABLE FIGURE 4 (Page 4 of 4) Aerospace