SAIB CE-05-88

SPECIAL AIRWORTHINESS

INFORMATION BULLETIN

Aircraft Certification Service Washington, DC

U.S. Department of Transportation Federal Aviation Administration

CE-05-88 September 30, 2005 http://www.faa.gov/aircraft/safety/alerts/SAIB This is information only. Recommendations aren’t mandatory.

Introduction

This Special Airworthiness Information Bulletin advises you, registered owners and operators of Cirrus Design Corporation (CDC) SR20 or SR22 airplanes, of possible failure of the nose gear strut assembly. Failure of this assembly could result in separation of the nose wheel and fork from the strut after a hard landing.

Background

In April 2004, an accident occurred involving a CDC model SR22 causing loss of the nose wheel assembly upon landing. Cirrus determined that a fillet weld attaching the strut tube to the nose gear spindle had failed because of poor penetration. Investigation determined that the substandard weld was from only one vendor. The welding problem was corrected and Cirrus issued a mandatory Service Bulletin (SB) to replace the nose gear strut for affected SR22 aircraft. Since that time, Cirrus testing and a similar accident with a model SR20 on March 10, 2005, prompted Cirrus to issue a second mandatory service bulletin for affected SR20 aircraft.

Recommendation

We recommend that you review the attached CDC mandatory service bulletins, SB 2X-32- 11, issued Aug 8, 2005 (for SR20s); and SB 2X-32-10 R1, issued Jun 28, 2005 (for SR22s) for serial number effectively. If your aircraft is affected, you should have the SB performed within the next 50 days.

For Further Information Contact

Wesley Rouse, Aerospace Engineer, FAA Chicago Aircraft Certification, 2300 E. Devon, Des Plaines, IL 60018; phone (847) 294-8113;

email: wess.rouse@faa.gov

Service Bulletin SB 2X-32-10 R1 Issued: 20 Aug 2004 Revised: 28 Jun 2005 Model SR22 CIRRUS DESIGN ATA 32-20: Nose Landing Gear Nose Gear Strut Inspection and Replacement

COMPLIANCE Mandatory: Cirrus Design considers this Service Bulletin to be MANDATORY. Accomplish this Service Bulletin within the next 50 flight hours. Compliance time begins upon receipt of this Service Bulletin.

This Service Bulletin was revised to add nose landing gear assembly P/N 14082-004 to the kit materials, update torque specifications for the nose wheel fork assembly spindle nut, and to clarify the installation of additional washers to eliminate gaps between nose landing gear strut and engine mount.

Operators who have successfully complied with the original release of this Service Bulletin, dated 20 August 2004, need take no turther action.

EFFECTIVITY Cirrus Design SR22 serial numbers 0854 through 0921.

APPROVAL FAA approval has been obtained on all technical data in this Service Bulletin that affects type design.

PURPOSE Cirrus Design recently made a supplier change for the manufacturing of its nose landing gear strut assembly. During the transition to the new manufacturer, process changes may have affected the reliability of this assembly at higher loads. Failure of this assembly could result in separation of the nose wheel and fork This Service Bulletin is being issued to require inspection of the assembly on all affected aircraft to determine if the gear must be replaced immediately or if the replacement can be deferred up to the next annual

DESCRIPTION This Service Bulletin contains instructions for the inspection of the fillet weld between the nose gear strut and wheel spindle, and replacement of the nose gear strut.

WARRANTY INFORMATION Cirrus Design will cover parts and labor costs for this Service Bulletin if the work is accomplished within the next 12 calender months and the work is accomplished at an authorized Cirrus Design Service Center. The Warranty Claim Form must be properly filled out and submitted with the removed parts to Cirrus Design in order to obtain a warranty credit.

Cirrus Design Corporation 4515 Taylor Circle SB 2X-32-10 R1 Duluth, Minnesota 55811 1 of 8 PH (218) 727-2737 Cirus Design Corporation cannot be responsible for the quality of work performed by others while fulfiling the requirements of this service bulletin. Procedures specified in this service bulletin must be accomplished using industry standard maintenance practices and applicable government regulations.

SR2X SERIES Cirrus Design Service Bulletin

MANPOWER REQUIREMENTS Approximately 1.0 manhour is required for inspection.

Approximately 3.5 manhours are required for nose gear strut replacement.

OTHER PUBLICATIONS AFFECTED SR22 Illustrated Parts Catalog (p/n 13774-001) SR22 Airplane Maintenance Manual (p/n 13773-001)

WEIGHT AND BALANCE N/A

MATERIAL INFORMATION The following parts are required to comply with this Service Bulletin. Parts can be obtained from Cirrus Design Spare Part Sales or an authorized Cirrus Design Service Center. Order Kit P/N 70082-001.

Item No. Description P/N or Spec. Supplier Quantity Service Bulletin SB 2X-32-10 R1 Cirrus Design 1 2 Nose Landing Gear Assembly 14082-004 Cirrus Design 1 Cotter Pin MS24665-355 Cirrus Design 1 4 Nut MS17826-8 Cirrus Design 1 5 Washer NAS1149F0863P Cirrus Design 5 6 Belleville Spring Washer 50750-101 Cirrus Design 4 Washer AN970-8 Cirrus Design 1 8 Bolt NAS6608H5 Cirrus Design 2 9 Spacer 13705-003 Cirrus Design 2 10 Washer NAS1149F1032P Cirrus Design 4 11 Bolt NAS6608-10D Cirrus Design 2 12 Spacer 13705-004 Cirrus Design 2 13 Nut AN320-8 Cirrus Design 2 14 Cotter Pin MS24665-285 Cirrus Design 2

ACCOMPLISHMENT INSTRUCTIONS A. Remove key from ignition.

B. Ensure BATTERY and AVIONICS master switches are in OFF position.

C. Remove nose gear fairing. (See Figure 01)

1. Turn nose wheel to tull 108 degree deflection.

2. Cut and remove safety wire securing hinge pin to strut fairing and pull hinge pin from strut fairing.

3. Remove screws securing strut fairing to nose gear strut and remove strut fairing from airplane.

Revised: 28 Jun 2005 SB 2X-32-10 R1 2 of 8

SR2X SERIES Cirrus Design Service Bulletin

4. Remove towing lugs from nose wheel assembly.

5. Remove wheel pant assembly.

a. Remove screws securing forward wheel pant to aft wheel pant and remove forward wheel Remove screws securing aft wheel pant to nose wheel assembly and remove aft wheel pant from airplane.

CAUTION: If there is any evidence of cracking or deformation in the area around the fillet weld the nose gear strut assembly must be replaced immediately.

D. Visually inspect the fillet weld between the nose gear strut and wheel spindle in accordance with FAA AC 43.13-1B, Chapter 5, Section 2, Visual Inspection.

1. Acquire necessary tools, equipment, and supplies.

Description P/N or Spec. Supplier Purpose Flashlight Any Source Inspect fillet weld.

10X Magnifier Any Source Inspect tillet weld.

2. Using flashlight and 10X magnifier, visually inspect fillet weld for signs of distress.

Verify there is no evidence of cracking in paint on or around surface of fillet weld.

b. Verify there is no evidence of deformation in nose gear strut on or around surface of fillet weld.

E. If no cracking or deformation is evident, the nose gear strut replacement can be deferred up to the next annual inspection. Perform the following steps:

1. Perform Procedure - Nose Gear Fairing Installation.

2. Send completed warranty claim form to Cirrus Design Customer Service and complete airplane records by noting compliance with SB 2X-32-10 R1 in Aircraft Logbook.

F. If cracking or deformation is evident, the nose gear strut must be replaced immediately. Perform the following steps:

1. Remove engine cowling. (Refer to AMM 71-10)

2. Raise airplane on jacks. (Refer to AMM 7-10)

3. Remove nose wheel fork assembly. (See Figure 02)

a. While supporting fork assembly, remove cotter pin, nut, flat washers, and Belleville washers from spindle bolt.

b. Remove fork assembly from nose gear strut.

4. Remove existing nose gear strut. (See Figure 02)

a. With nose gear strut supported, remove bolts, washers, and spacers securing nose gear strut to lower puck pan.

b. Remove cotter pins, nuts, washers, spacers, and bolts securing nose gear strut to lower engine mount.

c. Lower nose gear strut to ground.

Revised: 28 Jun 2005 SB 2X-32-10 R1 3 of 8

SR2X SERIES Cirrus Design Service Bulletin

5. Install new nose gear strut. (See Figure 02)

a. Acquire necessary tools, equipment, and supplies.

Description P/N or Spec. Supplier Purpose Grease ASG22 Aeroshell Lubrication.

Satety Wire Any Source Secure nose gear strut bolts.

b. With nose gear strut supported under airplane, lift strut up until bolt holes are in proper alignment with engine mount.

c. Apply a thin coat of grease to new bolt shafts (NAS6608-10D) and spacers (13705-003).

d. Install new bolts (NAS6608-10D), spacers (13705-003), washer (NAS1149F1032P).

washer (NAS1149F0863P), and nuts (AN320-8) securing nose gear strut to lower engine mount attach fittings.

e. At RH and LH lower engine mount attach fittings, measure gap between spacer and engine mount. Add RH and LH gap values together to obtain total gap. Reference total gap in the following table to determine if additional washers (NAS1149F1032P) are requirea.

Total Gap Number of Additional Washers Less than 0.125 (3.2 mm) None.

0.125 - 0.250 (3.2 - 6.4 mm) 1 each side.

0.250 and 0.375 inch (6.4 and 9.5 mm) 2 each side.

Greater than 0.375 inch (9.5 mm) Contact Cirrus Design for disposition.

†. Torque nuts to 480 - 690 in-Ib (53 - 76 Nm) and install new cotter pins (MS24665-285).

g. Install new bolts (NAS6608H5), washers (NAS1149F0863P), and spacers (13705-004) securing nose gear strut to lower puck pan. Torque bolts to 480 - 690 in-b (53 - 76 Nm).

Safety wire bolts to nose gear strut.

6. Install nose wheel fork assembly. (See Figure 02)

a. Acquire necessary tools, equipment, and supplies.

Description P/N or Spec. Supplier Purpose Grease ASG22 Aeroshell Lubrication.

Isopropyl Alcohol TT-I-735 Grade Any Source Cleaning agent.

A or B Calibrated Spring Scale 5A354 Chatillon Load determina- Kew Gardens, NY 11415 tion.

718-847-5000

b. Remove contaminates from spindle threads using wire brush and isopropyl alcohol.

c. Place nose wheel fork assembly into installation position.

Revised: 28 Jun 2005 SB 2X-32-10 R1 4 of 8

SR2X SERIES Cirrus Design Service Bulletin CAUTION: Ensure Tetlon coating (dark grey color) on thrust washer faces upward.

Ensure Belleville washers are installed in correct orientation. Failure to comply with this caution may result in nose wheel shimmy.

Do not allow grease to come in contact with spindle cup or nose wheel fork bushings. Failure to comply with this caution may result in nose wheel shimmy.

a. Install new washer (AN970-8), Belleville washers (50750-101), and washer (NAS1149F0863P) in correct orientation.

e. Secure nose wheel fork assembly with new castellated spindle nut (MS17826-8).

f. Attach spring scale to axle on nose wheel fork assembly and torque castellated spindle nut so a constant force of more than 49 Ibs (22.2 kg) is required to rotate nose wheel fork and wheel assembly.

Loosen castellated spindle nut.

h. Attach spring scale to axle on nose wheel fork assembly and torque castellated spindle nut so a constant force of 20 - 25 Ibs (9.1 - 11.3 kg) is required to rotate nose wheel fork and wheel assembly.

i. After re-torquing castellated spindle nut, secure nut with new cotter pin (MS24665-355).

Bend cotter around castellated spindle nut as shown. (See Figure 02) CAUTION: Do not allow grease to come in contact with spindle bearing surface or nose wheel fork bushings. Failure to comply with this caution may result in nose wheel shimmy.

J. Apply a thin coat of grease to exposed spindle threads.

7. Remove airplane from jacks. (Refer to AMM 7-10)

8. Install engine cowling. (Refer to AMM 71-10) G. Perform Procedure - Nose Gear Fairing Installation.

H. Send completed warranty claim form to Cirrus Design Customer Service and complete airplane records by noting compliance with SB 2X-32-10 R1 in Aircraft Logbook.

Procedure - Nose Gear Fairing Installation. (See Figure 01)

1. Acquire necessary tools, equipment, and supplies.

Description P/N or Spec. Supplier Purpose Safety Wire Any Source Secure hinge pin.

Loctite® 222 Any Source Secure strut fairing screws.

2. Turn nose wheel to full 108 degree deflection.

3. Pry trailing edge seam of strut fairing open and position strut fairing around nose gear strut.

4. From bottom of strut fairing, insert and slide hinge pin into hinge bodies until hinge pin is fully inserted and seated.

Secure hinge pin to strut fairing with safety wire.

Apply Loctite to strut fairing screws. (Refer to AMM 20-40) Install screws securing strut fairing to nose gear strut.

Revised: 28 Jun 2005 SB 2X-32-10 R1 5 of 8

SR2X _ SERIES cirrus Design Service Bulletin

8. Install wheel pant assembly.

Place aft wheel pant in proper alignment with nose wheel assembly and install screws.

b. Place forward wheel pant in proper alignment with aft wheel pant and apply light force to mate the wheel pants together.

Install screws along nose pant seam.

9. Install towing lugs to nose wheel assembly.

10. Rotate nose wheel assembly to ensure there is no interference through caster travel.

Revised: 28 Jun 2005 SB 2X-32-10 R1 6 of 8

SR2X SERIES Cirrus Design Service Bulletin 2 Note Hinge pin shown installed.

FILLET WELD (REF) LEGEND 8 1. Strut Fairing

2. Hinge Pin

3. Hinge

4. Safety Wire

5. Screw DETAIL A 6. Aft Wheel Pant 10 7. Cover NOTE 8. Bracket Using flashlight and 10X magnifier, ensure there is no evidence of cracking in paint on or around surface of fillet weld. 10. Forward Wheel Pant 9. Towing Lug Using flashlight and 10X magnifier, ensure there is no evidence SR2 SB32 1059 of deformation in strut on or around surface of fillet weld.

Figure 01 - Nose Gear Strut Inspection Revised: 28 Jun 2005 SB 2X-32-10 R1 7 of 8

SR2X SERIES Cirrus Design Service Bulletin ‚ENGINE MOUNT (REF)

PUCK STACK ASSEMBLY (REF) LEGEND

1. Cotter Pin NOTES 2. Nut

3. Washer Attach scale next to axle. Keep scale inline NOSE WHEEL FORK 4. Bolt with axle while measuring. ASSEMBLY 5. Nose Gear Strut , Ensure cotter pin is installed as shown. 6. Lower Puck Pan

7. Thrust Washer

• Keep Belleville washer free of lubricants. 8. Bushing

9. Flanged Bushing . Ensure Belleville washers are installed in 10. Large Area Washer orientation shown. 11. Belleville Washer

12. Spacer Measure gap between spacer and engine mount to determine if additional washers are DETAILI required. SR2 SB32 1060A Figure 02 - Nose Gear Strut Installation Revised: 28 Jun 2005 SB 2X-32-10 R1 8 of 8

Service loon Publications Change Request and Evaluation Form Use this form to submit a Publications Change Request to our Engineering Department and/or to tell CIRRUS us what you think of the quality of this publication. We will use the data you provide us to improve the DESIGN quality of our technical publications.

Contact Information:

Organization: Today's Date:_ Address: Telephone No.:

City/ST/ZIp: Fax No:

Prepared By: _ E-Mail:

Title:

Publication Type:

Airplane Model: Publication Part Number: SB 2X-32-10 B1 Title of Publication: NLG Inspection and Replacement Publication Date (See Cover Page):

Location of Publication Change Request:

Chapter Number: Section Number: Figure No (IPC or WM only):

Page Number: Page Date: Illustration Number (if applicable):

Please consider the following suggestions for change:

Evaluation:

Please rate the quality of this publication. (good) 4 3 1 (poor) STECH Please rate the quality of the illustrations. (good) 4 3 (poor) PUBs Is this publication easy to understand? (good) 4 3 2 1 (poor) Is this publication easy to use? (good) 4 3 (poor) Are the Material and Accomplishment Instructions accurate? (good) 4 2 1 (poor) Is the Manpower estimate accurate? (good) 4 2 (poor) Fax or mail this form to Cirrus Design Corporation:

Manager - Technical Publications, 4515 Taylor Gircle, Duluth, MN 55811 PH (218) 727-2737 FAX: (218) 529-7304 www.cirrusdesign.com

Cirrus Design Corp 4515 Taylor Circle STAMP Duluth, MN 55811-1548

CIRRUS DESIGN CORPORATION 4515 TAYLOR CIRCLE

DULUTH, MN 55811-1548

Service Bulletin SB 2X-32-11 Issued: 08 Aug 2005 Models SR20 CIRRUS DESIGN ATA 32-20: Nose Landing Gear Nose Gear Strut Inspection and Replacement

COMPLIANCE Mandatory: Cirrus Design considers this Service Bulletin to be MANDATORY. Accomplish this Service Bulletin within the next 50 flight hours. Compliance time begins upon receipt of this Service Bulletin.

EFFECTIVITY Cirrus Design SR20 Nose Landing Gear Serial Numbers 1003 through 1156. This part was delivered on Cirrus Design SR20 serial numbers 1279 thru 1282, 1297 thru 1301, 1307 thru 1316, 1319 thru 1321, 1324 thru 1330, 1332 thru 1439 and installed as a spare replacement on other aircraft.

APPROVAL FAA approval has been obtained on all technical data in this Service Bulletin that affects type design.

PURPOSE Cirrus Design recently made a supplier change for the manufacturing of its nose landing gear strut assembly. During the transition to the new manufacturer, process changes may have affected the reliability of this assembly at higher loads. Failure of this assembly could result in separation of the nose wheel and fork This Service Bulletin is being issued to require inspection of the assembly on all affected aircraft to determine if the gear must be replaced immediately or if the replacement can be deferred up to the next annual inspection.

DESCRIPTION This Service Bulletin contains instructions for the inspection of the fillet weld between the nose gear strut and wheel spindle, and replacement of the nose gear strut.

WARRANTY INFORMATION Cirrus Design will cover parts and labor costs for this Service Bulletin if the work is accomplished within the next 12 calender months and the work is accomplished at an authorized Cirrus Design Service Center. The Warranty Claim Form must be properly filled out and submitted with the removed parts to Cirrus Design in order to obtain a warranty credit.

MANPOWER REQUIREMENTS Approximately 1.0 manhour is required for inspection.

Approximately 3.5 manhours are required for nose gear strut replacement.

Cirrus Design Corporation 4515 Taylor Circle SB 2X-32-11 Duluth, Minnesota 55811 1 of7 PH (218) 727-2737 Cirrus Design Corporation cannot be responsible forthe quality of work performed by others while fulfiling the requirements of this service bulletin. Procedures specified in this service bulletin must be accomplished using industry standard maintenance practices and applicable goverment regulations.

SR2X SERIES Cirrus Design Service Bulletin

OTHER PUBLICATIONS AFFECTED SR20 Illustrated Parts Catalog (p/n 12138-001) SR20 Airplane Maintenance Manual (p/n 12137-001)

WEIGHT AND BALANCE N/A

MATERIAL INFORMATION The following parts are required to comply with this Service Bulletin. Parts can be obtained from Cirrus Design Spare Part Sales or an authorized Cirrus Design Service Center. Order Kit P/N 70082-900.

Item No. Description P/N or Spec. Supplier Quantity Nose Landing Gear Assembly 11907-005 Cirrus Design 1 2 Cotter Pin MS24665-353 Cirrus Design Nut MS17826-8 Cirrus Design 1 4 Washer NAS1149F0863P Cirrus Design 5 Belleville Spring Washer 50750-101 Cirrus Design 4 6 Washer AN970-8 Cirrus Design 1 Bolt NAS6206-26D Cirrus Design 2 8 Washer NAS1149F0632P Cirrus Design 4 9 Spacer 12935-001 Cirrus Design 2 10 Nut AN320-6 Cirrus Design 2 11 Cotter Pin MS24665-283 Cirrus Design 3 12 Bolt AN6-64 Cirrus Design 1 13 Washer NAS1149F0663P Cirrus Design 3 14 Nut AN310-6 Cirrus Design 1

ACCOMPLISHMENT INSTRUCTIONS A. Remove key from ignition.

B. Ensure BATTERY and AVIONICS master switches are in OFF position.

C. Perform Aircraft Logbook inspection to determine serial number of installed strut.

1. If nose gear strut serial number falls within 1003 through 1156 range, perform remainder of Service Bulletin.

2. If nose gear strut serial number falls outside 1003 through 1156 range, no further action is required. Send completed warranty claim form to Cirrus Design Customer Service and complete airplane records by noting compliance with SB 2X-32-11 in Aircraft Logbook.

D. Remove nose gear fairing. (Reter to AMM 32-20) 08 Aug 2005 SB 2X-32-11 2 of 7

SR2X SERIES Cirrus Design Service Bulletin CAUTION: If there is any evidence of cracking or deformation in the area around the fillet weld the nose gear strut assembly must be replaced immediately.

E. Visually inspect the fillet weld between the nose gear strut and wheel spindle in accordance with FAA AC 43.13-1B, Chapter 5, Section 2, Visual Inspection.

1. Acquire necessary tools, equipment, and supplies.

Description P/N or Spec. Supplier Purpose Flashlight Any Source Inspect fillet weld.

10X Magnifier Any Source Inspect fillet weld.

2. Using flashlight and 10X magnifier, visually inspect fillet weld for signs of distress.

a. Verity there is no evidence of cracking in paint on or around surface of fillet weld.

b. Verify there is no evidence of deformation in nose gear strut on or around surface of fillet weld.

F. If no cracking or deformation is evident, the nose gear strut replacement can be deferred up to the next annual inspection. Perform the following steps:

1. Install nose gear fairing. (Refer to AMM 32-20)

2. Send completed warranty claim form to Cirrus Design Customer Service and complete airplane records by noting compliance with SB 2X-32-11 in Aircraft Logbook.

G. If cracking or deformation is evident, the nose gear strut must be replaced immediately. Perform the following steps:

Remove engine cowling. (Refer to AMM 71-10)

2. Raise airplane on jacks. (Refer to AMM 7-10)

3. Remove nose wheel fork assembly.

While supporting fork assembly, remove cotter pin, nut, flat washers, and Belleville washers trom spindle bolt.

b. Remove tork assembly from nose gear strut.

4. Remove existing nose gear strut.

a. With nose gear strut supported, remove cotter pin, nut, washers, and bolt securing nose gear strut to lower puck pan.

b. Remove cotter pins, nuts, washers, spacers, and bolts securing nose gear strut to lower engine mount.

C. Lower nose gear strut to ground.

5. Install new nose gear strut.

a. Acquire necessary tools, equipment, and supplies.

Description P/N or Spec. Supplier Purpose Grease ASG22 Aeroshell Lubrication.

b. With nose gear strut supported under airplane, lift strut up until bolt holes are in proper alignment with engine mount.

C. Apply a thin coat of grease to new spacers (12935-001).

08 Aug 2005 SB 2X-32-11 3 of 7

SR2X SERIES Cirrus Design Service Bulletin Note: Additional washers may be installed between nose gear strut and engine mount as required to eliminate any gap. Two washers per side maximum.

Install new bolts (NAS6206-26D), spacers (12935-001), washers (NAS1149F0632P), and nuts (AN320-6) securing nose gear strut to lower engine mount. Torque nuts to 80 - 95 in- Ib (9.0 - 10.7 Nm) and install new cotter pins (MS24665-283).

e. Apply a thin coat of grease to new bolt shaft (AN6-64).

†. Install new bolt (AN6-64), washers (NAS1149F0663P), and nut (AN310-6) securing nose gear strut to lower puck pan. Torque bolt to 80 - 95 in-lb (9.0 - 10.7 Nm) and install new cotter pin (MS24665-283).

6. Install nose wheel fork assembly.

a. Acquire necessary tools, equipment, and supplies.

Description P/N or Spec. Supplier Purpose Grease ASG22 Aeroshell Lubrication.

Isopropyl Alcohol TT-I-735 Grade Any Source Cleaning agent.

A or B Calibrated Spring Scale 5A354 Chatillon Load determination.

Kew Gardens, NY 11415 718-847-5000

b. Remove contaminates from spindle threads using wire brush and isopropyl alcohol.

C. Place nose wheel fork assembly into installation position.

CAUTION: Ensure Teflon coating (dark grey color) on thrust washer taces upward.

Ensure Belleville washers are installed in correct orientation. Failure to comply with this caution may result in nose wheel shimmy.

Do not allow grease to come in contact with spindle cup or nose wheel fork bushings. Failure to comply with this caution may result in nose wheel shimmy.

d. Install new washer (AN970-8), Belleville washers (50750-101), and washer (NAS1149F0863P) in correct orientation.

e. Secure nose wheel fork assembly with new castellated spindle nut (MS17826-8).

†. Attach spring scale to axle on nose wheel fork assembly and torque castellated spindle nut so a constant force of more than 49 Ibs (22.2 kg) is required to rotate nose wheel fork and wheel assembly.

Loosen castellated spindle nut.

h. Attach spring scale to axle on nose wheel fork assembly and torque castellated spindle nut so a constant force of 20 - 25 Ibs (9.1 - 11.3 kg) is required to rotate nose wheel fork and wheel assembly.

i. After re-torquing castellated spindle nut, secure nut with new cotter pin (MS24665-353).

Bend cotter around castellated spindle nut as shown. (See Figure 02) 08 Aug 2005 SB 2X-32-11 4 of 7

SR2X SERIES Cirrus Design Service Bulletin CAUTION: Do not allow grease to come in contact with spindle bearing surface or nose wheel fork bushings. Failure to comply with this caution may result in nose wheel shimmy.

Apply a thin coat of grease to exposed spindle threads.

Remove airplane from jacks. (Refer to AMM 7-10)

8. Install engine cowling. (Refer to AMM 71-10)

9. Install nose gear fairing. (Refer to AMM 32-20)

10. Send completed warranty claim form to Cirrus Design Customer Service and complete airplane records by noting compliance with SB 2X-32-11 in Aircraft Logbook.

08 Aug 2005 SB 2X-32-11 5 of 7

SR2X SERIES Cirrus Design Service Bulletin Note Hinge pin shown installed.

WELD (REF) LEGEND

1. Strut Fairing

2. Hinge Pin

3. Hinge

4. Safety Wire

5. Screw

6. Aft Wheel Pant

7. Cover NOTE 10 DETAIL A 8. Bracket

9. Towing Lug _ Using flashlight and 10X magnifier, ensure there is no evidence 10. Forward Wheel Pant of cracking in paint on or around surface of fillet weld. 11. Upper Access Panel Using flashlight and 10X magnifier, ensure there is no evidence SR2 5B32 1113 of deformation in strut on or around surface of fillet weld.

Figure 01 - Nose Gear Strut Inspection 08 Aug 2005 SB 2X-32-11 6 of 7

SR2X SERIES Cirrus Design Service Bulletin ENGINE

MOUNT (REF)

PUCK STACK ASSEMBLY (REF) 3 →

NOSE WHEEL FORK 10

ASSEMBLY LEGEND

1. Cotter Pin NOTES 2. Nut

3. Washer _ Attach scale next to axle. Keep scale inline 4. Bolt with axle while measuring. 5. Nose Gear Strut , Ensure cotter pin is installed as shown. 6. Puck Tray

7. Thrust Washer

• Keep Belleville washer free of lubricants 8. Bushing

9. Flanged Bushing Ensure Belleville washers are installed in 10. Large Area Washer orientation shown. 11. Belleville Washer

12. Spacer Additional washers may be installed between nose gear strut and engine mount as required to eliminate any gap. Two washers per side maximum. DETAIL A SF2 SB32 1114 Figure 02 - Nose Gear Strut Installation 08 Aug 2005 SB 2X-32-11 7 ot 7

Service Loon Publications Change Request and Evaluation Form Use this form to submit a Publications Change Request to our Engineering Department and/or to tell CIRRUS us what you think of the quality of this publication. We will use the data you provide us to improve the DESIGN quality of our technical publications.

Contact Information:

Organization: Today's Date: _ Address: Telephone No.:

City/ST/ZIp: Fax No:

Prepared By: _ E-Mail:

Title:

Publication Type:

Airplane Model: Publication Part Number: SB 2X-32-11 Title of Publication: NG Inspection and Replacement Publication Date (See Cover Page):

Location of Publication Change Request:

Chapter Number: Section Number: Figure No (IPC or WM only):

Page Number: Page Date: Illustration Number (if applicable):

Please consider the following suggestions for change:

Evaluation:

Please rate the quality of this publication. (good) 4 3 1 (poor) STECH Please rate the quality of the illustrations. (good) 4 3 (poor) PUBs Is this publication easy to understand? (good) 4 3 2 1 (poor) Is this publication easy to use? (good) 4 3 (poor) Are the Material and Accomplishment Instructions accurate? (good) 4 2 1 (poor) Is the Manpower estimate accurate? (good) 4 2 (poor) Fax or mail this form to Cirrus Design Corporation:

Manager - Technical Publications, 4515 Taylor Gircle, Duluth, MN 55811 PH (218) 727-2737 FAX: (218) 529-7301 www.cirrusdesign.com

Cirrus Design Corp 4515 Taylor Circle STAMP Duluth, MN 55811-1548

CIRRUS DESIGN CORPORATION 4515 TAYLOR CIRCLE

DULUTH, MN 55811-1548