"'"' 

### .. 

## No. 528D



### .**~er**

### AircraftCorporation



### .._ioBeach,Florida. U.S.A. 

# SERVICE BULLETIN ********************************** 

## : P!PER CONSIDERS 

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..: CON1PLJANCE MANDATORY 

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********************************** 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) P ARTS. Check each PART for Purpose, Instructions, and Cc:nplia.ncs Time. SUBJECT: REASON FOR REVISION:

MODELS AFFECTED: All aircraft incorporating stee· l wing 1ift 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 P

A-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 Assembly 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

- 1through 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 Bulletin No
. 910A (or latest revision). APPROVAL: 

### The technical contents

### of this Service Bulletin have been approved by the·F.A.A
. (OVER) ATA: 5701 

# I11; • • .: : .·· -- • "j

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**·** { 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

**s** Serv i ce **3ul 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 r ements 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 P rocedure" 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 a s 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 f o r 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 o f PART I of ' this se ' r,i'i ce . au 11 et in . .

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\ SERVICE BULLETIN NO. 5280 PAGE 3 OF 6 INSTRUCTIONS {CONT'O): 6. Treat (corrosion 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 time above. 7
. Upon completion of the "Inspection Procedure" and treatment, reinstall serviceable lift struts on the aircraft. 8. Check aircraft rigging and adjust as necessary. (Use appropriate Piper Service Memo and Owner Handbook as required to accomplish

**pr~oer** rigging.) 9. Make a logbook entry of compliance

**~** ?ART ! of

**th s**  Service aul1etin. MAT:RIAL
**R~QUIRED:** Not applicable PART II PURPOSE: Piper has developed an improved w ing lift strut which will eliminate the concern for internal corr osion in wing lift

**str~ts.** The new struts a1so feature an improvement in the =esign cf th e lif t strut fork which eliminates the requirements of Piper Service Bulletin No
. 1570. It will b e necessary to replace existing wing lift struts with new sealed wing lift stru ts at a date not to exceed (24) months from the effective date of this Service Bulletin. COMPLIANCE TIME: Upon reaching (24) months from the effective date of this Service Bulletin or as required by PART I inspection. INSTRUCTIONS: 1. Prepare the aircraft for the removal ofwing 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 configuration fork bolt assembly. 4. Refer to the Part Number Supplement on Page 5 of this Service Bulletin to determine

**~he** properwing lift strut part number for the appropriate aircraft

. 5. Install, rig, and adjust the new ·Sealed lift strut assemblies as required. Note: Use appropriate Piper Service Memo and Owners Handbook as required to accomplish proper rigging. 6
. Install "No Step" Decal, Piper Part Number 80944-02, on each wing lift strut approximately six (5) inches from the bottom of the struts, or paint the statement "NO STEP" in one (1) inch minimum high letters, 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 entering and leaving the airplane. 7
. Make appropriate logbook entry of compliance with PART II of this Service 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

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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 inspect the lift strut tubes. Aperceptible dent will appear 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 replaced with new lift strut assembly before further flight. b. If no dents appear in the metal, the lift strut may be considered airworthy.

· NOTE: Further internal corrQsion may be impeded per the following procedure: a. Remove lift strut from aircraft. b. Inject one quart of Valoil, Lionoil Multi

-Purpose L-1, Linseed Oil, Paralketone or any alternate preservative conforming to Federal Specification TT

-S-1760, into the bolt 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 P A GE 6 OF 6 PART NUMBER SUPPLEMENT E-2 Series J-2 Series, Cub . -:- .;;. · :. - . 500 through 1975 '·· · _
- _ .., _ .- 85546-2 Rear 1, 2 - - . .. **:;·'t ;-....;.**  **:.~ =**  **·· =·=·**  **:. :**  ... **~~** .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- 1 1 Series,Cub Special

PA - 1 2 Series, Super Cruiser PA-14 Series, Fami 1 y Cruiser PA- 1 5 Vagabond

ALL 4-401 throug h 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,

**-- ~**  - - 85556-2 ' Fwd

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**~** - ·- -- -· : 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. P A - 25 Series lift struts are single piece for each side of aircraft. ------- - - · - - - - •• **~** .. . =. ...

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