SERVICE BULLETIN No. 5280

Piper PA-11 Cub Special · Service Bulletins

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Overview

This document is Service Bulletin No. 5280 issued by Piper Aircraft Corporation, detailing mandatory compliance for inspection and replacement of wing lift struts on various aircraft models. It outlines the purpose, instructions, and compliance times for ensuring the safety and integrity of the aircraft's wing lift strut assemblies.

Compliance with this Service Bulletin is mandatory.
All aircraft with steel wing lift struts are affected.
Inspection for corrosion must occur before the next flight and every 12 months thereafter.
New sealed lift struts are available to replace existing ones.
The bulletin supersedes Service Bulletin No. 528C.
Improved struts eliminate concerns for internal corrosion.
Logbook entries are required for compliance.
The document is effective upon receipt.

Document

Source

Originally published by regulations.gov. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

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Document details

Type: Service Bulletins
Year: 1990
File size: 1.2 MB
Publisher: regulations.gov
Language: en

Specifications & performance

Extracted from this document.

Specifications

Wing lift strut part numbers: Refer to Part Number Supplement on Page 6

About this document

What is the SERVICE BULLETIN No. 5280?

The SERVICE BULLETIN No. 5280 is a service bulletins for the Piper PA-11 Cub Special, dated 1990.

Where does the SERVICE BULLETIN No. 5280 come from?

This copy of the SERVICE BULLETIN No. 5280 was originally published by regulations.gov and is hosted on Sprinkle as a free, searchable reference copy.

What year was the SERVICE BULLETIN No. 5280 published?

The SERVICE BULLETIN No. 5280 — the Piper PA-11 Cub Special service bulletins on file — is dated 1990.

Documentation completeness

2/7

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Pilot's Operating Handbook / AFM
Checklist
Maintenance Manual
Parts Catalog (IPC)
Systems & Wiring
Service Bulletins on file
Type Certificate (TCDS)

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In this document

Purpose

The bulletin aims to address the need for timely detection of wing lift strut corrosion and outlines inspection and treatment procedures.

Compliance Time

Inspections must be conducted before the next flight and at least every 12 months, with specific timelines for replacing struts.

Instructions

Detailed steps for inspecting, treating, and replacing wing lift struts are provided, including precautions for corrosion.

Material Required

Specific materials and parts are listed for compliance, including new sealed lift struts and 'No Step' decals.

Availability of Parts

Parts can be obtained from Piper Field Service Facilities, with special pricing in effect for sealed lift struts.

Part Number Supplement

A list of part numbers for the new sealed lift struts is provided for various aircraft models.

Safety notes

Inspect for external corrosion, especially in areas covered by cuffs.
Struts showing signs of internal corrosion must be replaced.
Dents in lift strut tubes indicate potential internal corrosion and require replacement.
Logbook entries must be made for compliance with the bulletin.

Full document text

"'"'. . No. 528D .- ~er Air c raft Corporation .. _io Beach, Florida. U.S.A. SERVICE BULLETIN ********************************** : P!PER CONSIDERS ! .. : CON1PLJANCE MANDATORY ! · * * ********************************** Date October 19, 1990 S ( S~rvice Bulletin No . 5280 supersedes and voids Service Sull~~in No. 528C, dated October 11, 1989) This Service Bulletin is divided into Two (2) PARTS. Check each PART for Purpose, Instructions, and Cc:npl ia.ncs Time. SUBJECT: REASON FOR REVISION : MODELS AFFECTED: All aircraft incorporating stee ·l wing 1i ft struts (See note) J-2 Series, Cub J-3, NE-1, L-4 Cub J-4 Series Coupe J-5, J-SC, L-14, AE-1 , HE-1, Series Cub Cruiser PA-11 Series, Cub Special PA-12 Series, Super Cruiser PA-14 Series, Family Cruiser PA-15 Vagabond PA-16 Clipper PA-17 Vagabond PA-20 Series, Pacer PA-22 Series, Tri-Pacer/Colt PA-25 Series, Pawnee • 'I - . NOTE: Wing Lift Strut Assemb l y Inspection/Replacement To revise Compliance Time, Purpose, Instructions, and to announce the availability of new sealed lift struts SERIAL NUMBERS AFFECTED: ALL 500 through 1975 ALL 4-401 through 4-1649 5-1 through 5-1389 11-1 through 11-1678 12-1 through 12-4036 14- 1 through 14-523 15-1 through 15-388 16-1 through 16-736 17-1 through 17-215 20-1 through 20-1121 22-1 through 22-9848 25-1 through 25-8156024 Al1 variations of the PA-18 Series and PA-19 Series are no longer Affected by this Service Bulletin and are covered by Piper Service Bul l etin No . 910A (or latest revision). APPROVAL: The technical contents of this Service Bulletin have been approved by the · F.A.A. (OVER) ATA: 5701 I 11; • • .: : .·· -- • "j - - ~ i-~ ~ ~~-~~ ; ~ ~~ · { SERVICE BULLETIN NO. 5280 PAGE 2 OF 6 . .. - -: ..., _ -::_ · - ;;~ PART I : :::.- - :. (• J • ~ - • ,· PURPOSE: The five (5) year repetitive inspection interv~l . ·=· · .-.= -. - _ required by compliance with Service Bu]letin N.o. 528C may not be adequate for timely detection of serious wing lift strut corrosion. Eventually, undetected corrosion ~ill reduce the . strength of the lif t strut, and could possibly lead to failure of the strut. In Service Bulletin No. 528C, th e compliance time for the existing corrosion inspection and treatment procedure was reduced, and is currently at intervals not to exceed twelve (12) months from the last inspect i on or the first use of a new 7 ift strut. PART I of t ~ i s Serv i ce 3ul l et~ n prcv i des an inspection and treatment procedure to detect and treat the corrosion which may be present in the wing lift s~rut assemblies. COMPLIANCE TIME: thereafter. Before next flight and each twelve (12) month period NOTE If the inspe ction requi rements of Service Bulletin No. 910A or 528C have been accomplished with i n the last twelve ( 12) months or if the wing lift struts are new, and have been installed w ithin the last tw e lve (12) months, the repetitive in spect ion will be required no later than twelve (12) months after the last inspection or new lift strut installation as the case ma y be . Upon reaching (24) months from the effective date of this Service Bu ll et in, proceed to PART II. Compliance with PART II of this Service Bulletin will relieve the repet itiv e ins pection requirements of PART I. INSTRUCTIONS : 1. P repare the aircraft for the removal of old wing lift struts by supporting the wing as necessary. 2. Remove wing lift s~r uts and accomplish the insp ect ion per "Inspection Procedure" on Sketch "A". ,...-- - -- - -- ---- - - CAUTION: All aircraft u~ilizing "cuffs" at the wing lift strut roots (top and/o bottom) shou ld take extra care in in spect ion for external corrosion in the areas covered by the cuffs. 3. Inspect forks, clamps, hardware, fairleads and jury struts for condition and replace as n ecessar y. 4. Turn each wing lift strut u pside down and tap gently. This procedure is necessary to remove any water, debris or corrosion particles. 5. Inspect 1 ift struts according to ·rnspection Procedure" in Sketch .. A. Lift struts indicating presence of internal corrosion or which fail the ·rnsp ect ion Procedure· must be rep lac ed with new sealed wing lift struts. Should corrosion be apparent from the outside (rust pin hol es or la rge rust stained areas), strut must be replaced even if strut passes the Minspection Procedure". NOTE The new sea1ed lift struts may be installed one at a time during the (24) months compliance time ( PART II ) provided the repetit iv e · ins pecti on requirements above are met for the lift struts that have not been replaced. Replacement of all lift struts with the new sealed lift struts will relieve the repetitive inspection requirements of PART I of ' this se 'r,i'i ce . au 11 et in . . ( \ SERVICE BULLETIN NO. 5280 PAGE 3 OF 6 INSTRUCTIONS {CONT'O): 6. Treat (co rrosion impediment) each wing lift strut per the "Inspection Procedure" note on Sketch "A".. Treatment (corrosion impediment) must coincide with each- inspection as required by the compliance t ime above. 7. Upon completion of the "Inspection Procedure" and treatment , rei nstall serviceable lift struts on the aircraft. 8. Check aircraft rigg i ng and adjust as necessary . (U se appropriate Piper Service Memo and Owner Handbook as required to accomp li sh pr~oer rigg in g.) 9. Make a logbook entry of compliance w ~ : ~ ?ART ! of th ~ s Ser vic e aul1et in. MAT:RIAL R~QUIRED: Not applicable PART II PURPOSE: Piper has developed an improved win g lift strut which will eliminate the concern for inter n al corr os io n in wing lift str~ts. The new struts a 1so feature an improvement in the =es i gn cf t he lif t strut fork which el iminates the requirements of Piper Service Bul l et in No . 1570. It wil l be necessary to replace existing

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wing lift struts with new sea led wing l ift str u ts at a date not to exceed (2 4) months from the effect ive date of this Serv i ce Bulletin. COMPLIANCE TIME: Upon reaching (24) months from the effective date of this Service Bulletin or as required by PART I inspe ct ion. INSTRUCTIONS: 1. Prepare the aircraft for the removal of wing lift struts by supporting the wing as necessary.2. Remove the old wing lift struts. 3. Inspect clamps, hardware, fairleads and jury struts for condition and replace as necessary . Note that the new Piper sealed lif t strut assemblies incorporate the latest conf iguration fork bolt assembly. 4. Refer to the Part Number Supplement on Page 5 of this Service Bulletin to determine ~he proper wi ng lift strut part number for the appropriate aircraft . 5. Install, rig, and adjust the new ·Sealed lift strut assemb li es as required. Note: Us e appropriate Piper Service Memo and Owners Handbook as required to accomp li sh proper rigging.6. Install "No Step" Deca l, Piper Part Number 80944-02, on each wing lift strut approx i mately six (5) inches from the bottom of the struts, or paint the statement "NO STEP" in one (1) inch minimum high l etters, in a color which contrasts with the airplane color, on each wing lift strut approximately six (5) inches from the bottom of the struts, and in such a direction that the "No Step" caution can be read when enter i ng and l eaving the airplane.7. Mak e appropriate logbook entry of compliance with PART II of this Se rvi ce Bulletin for strut (s ) replaced. ' - SERVICE BULLETIN NO. 5280 PAGE 4 OF 6 · _· , :- · .(- MATERIAL REQUIRED: As required by inspect ion, refer to the Part Numb~ - r .. '- , .. . ... Supplement on Page 6 ~f this Service Bulletin when ordering the new sealed lift · : struts; four (4) eac.h pe_r w aircraft, "No Step" Decal, Piper Part Number 80944- 02. AVAILABILITY OF PARTS : Your Piper Field Service Facility. This Service Bulletin is ef fe ctive upon receipt. SUMMARY: Service Bulletin. list ed on the Part from the effect i ve There is no factory participation applicable to this Special pricing is in effect for the sealed lift struts as Number Supplement sheet on Page 6, for at least 180 days date of this Service Bulletin. Please contact your Factory Authorized Piper Field Service Faci l ity to make arrangements for compliance with this Service Bulletin in accoraance with the compliance time indicat ed . NOTE: If you are no lon ger in possession of this aircraft, please forward this information to the present owner/operator and notify the factory of address/ownership corrections. Changes should in clude aircraft model, serial number, current owner's name and address. Corrections/changes should be directed to: Piper Aircraft Corporation Attn: Customer Service P. 0. Box 1328 Vera Beach, Florida 32961-1328 . - .. ·· .·...- ... - .. . ( I 'I ) . SERVICE BULLETIN NO. 5280 PAGE 5 OF 6 ~ NA$1, 311&4-4 (()-, C.aatt• OF -pACrOirf T'AL4n!T Sitr\al sa.. .... Scnw WS51111 .. (On~ Cl ~ 'T'M.ln.c" Strut) ~II::: .., , ,w vn er ••• LJIIIT mna •WMax 1. Securely tape a sheet of thin 1/4 inch graph paper to the lower 11 inches of the top and bottom surfaces on all wing lift struts. 2. Using a Maule "Fabric Tester" and holding tool normal to strut contour, apply pressure at a scale reading of 80 in each of the grid blocks. 3. Remove the paper and ins pect the lift strut tubes. A perceptible dent willappear if internal corrosion is present. If any dents are found, be certain the dents are in the metal by carefully removing the paint. a. Lift strut tubes indicating the presence of any perceptible dent in the metal must be rep la ced with new lift strut assembly before further flight. b. If no dents appear in th e metal, the lift strut may be considered airworthy. · NOTE: Further internal corrQsion may be impeded per the fol l owing procedure: a. Remove lift strut from aircraft. b. Inject one quart of Valoil, Lionoil Multi - Purpose L-1, Linseed Oil, Paralketone or any alternate preservat i ve conforming toFederal Specif i cation TT - S-1760, into the bo l t hole at the top of the strut . c. Plug the bolt holes and slosh oil until interior of strut is thoroughly coated. d. Drain oil from strut (through bolt holes) and install MS51861 -44 sheet metal screw, as shown, for future identification. e. Reinstall strut to aircraft and rig.4. Record lift strut inspection in aircraft logbook. SKETCH "A·· BULLETIN NO. 5280 PA GE 6 OF 6 PART NUMBER SUPPLEMENT E-2 Series J-2 Series, Cub . -:- .;;. · :. -. 500 through 1975 ' ·· · _-_ .., _ .-85546-2 Rear 1, 2 - -. .. :;·'t ~ r ;-....;. : :.~ · ·= ·· ~ ~ =·=· :. : ... ~~ .i:. : :- ... . -;;. ;, ~ ~ :..;.. .. - :~ ~~ ~ · 85545-2 Fwd . ~.=;: .. : ·- ~ 1,2 J- 3, NE-1, L-4 Cub J -4 Series Coupe J-5, J-5C, L-14, AE-1, HE-1 Series Cub Cruiser PA- 11 Series, Cub Special PA - 12 Series, Super Cruiser PA-14 Series, Fami 1y Cruiser PA- 15 Vagabond ALL 4-401 through 4-1649 5- 1 th rough 5-1389 11-1 through 11-1678 12 -1 through 12-4036 14-1 through 14-523 15-1 through 15-388- . . .. - 85548-2 Rear 1 t 2 85547-2 Fwd 1, 2 85550- 2 Rear 1, 2 85549-2 Fwd 1 t 2 85553-2 Rear 1 '2 85552-2 Fwd 1, 2 85555-2 Rear ·1 t 2 85554-2 Fwd 1, 2 85553-2 Rear 1, 2 85552-2 Fwd 1, 2 85553-2 Rear 1 '2 85552-2 Fwd 1 '2 85557-2 Rear 1 t 2 85556-2 Fwd 1 t 2 -... - - -- . . - ~ -· PA-16 Clipper - - - · - - - ¥ 16-1 through 16 -736 . -= -- · :._ 85559-2. Rear -- . .- 1,2 PA-17 Vagabond PA-20 Series, Pacer PA-22 Series, _ Tri-Pacer / Colt PA - 25 - 150 Pawnee 17 -1 through 17-215 20-1 through 20-1121 22-1 through 22-9848 25-1 through 25-731 -- ,.. ~ ,_ 85558-2· Fwd : ;;..::~ ~ - ~ 1 , 2 ;.-J · -- ··. 85557-2 Rear ~ ' · ·:: 1, 2 -- ~ - - 85556-2' Fwd " ~ - ' 1", 2 ·'='• · . ·oJ - - ~ .- - ., - .. . _ ,. _.,.. ~~4r-- ,...; t. .. · ~-.!• ' • - -- ., . .. -' ·" ' .. ... ~ - ·- -- -·: 85559-2' Rear ": --:.. 1,2 :.- 85560-2 Fwd · --,__; · . -. _1 , 2 ' 85559-2 Rear , '2 85560- 2 Fwd , ., t'- 61046-6 2,4 PA-25-235/260 . Pawnee 25~2000 through 25-8156024 640 '38-2 2,4 ----- 1. All strut assemblies include forks. 2. Struts come painted with prime coat only. 3. Owners/ operators must call or write Piper Customer Services for quotes on price and delivery date. 4. PA- 25 Series lift struts are single piece for each side of aircraft. ------- -- ·--- - •• ~ .. . ~ - =. ... r ~

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