24 January 2007
Mandatory Service Bulletin No:
Cylinder assembly recall due to head cracking.
Superior Part numbers SA47000L-A1, SA47000L-A20P, SA47000S-A1, SA47000S-A20P, SA47000S-A21P, SA52000- A1, SA52000-A20P, SA52000-A21P, SA52000-A22P, SA52000-A23P, SA55000-A1, SA55000-A20P
SL32000W-A1, SL32000W-A20P, SL32000W-A21P, SL32000WH-A1, SL32000WH-A20P, SL32006W-A1, SL32006W-A20P, SL32006W-A21P, SL36000TW-A1, SL36000TW-A20P, SL36000TW-A21P, SL36000TW-A22P, SL36000W-A1, SL36000W-A20P, SL36000W-A21P, SL36006W-A1, SL36006W-A20P, SL36006W-A21P
Teledyne Continental Motors Engines:
O-470-G, -K, -L, -M, -P, -R, -S, -U IO-470-C, -D, -E, -F,-G,-H, -L, -M, -N, -P, -R, -S, -U, -V
IO-520-A, -B, -BA, -C, -D, -E, -F, -J, -K, -L, -M, -BB, -CB, -MB.
TSIO-520-AF, -B, -BB, -C, -CE, -D, -DB, -E, -EB, -G, -H, -J, -JB, -K, -KB, -L, -LB, -M, -N, -NB, -P, -R, -T, UB, -VB, -WB
IO-550-A, -B, -C, -D, -E, -F, -L
Textron Lycoming Engines:
O-320-A, -B, -C, -D, -E, -H IO-320-B, -D, -E LIO-320-B AIO-320-A, -B, -C AEIO-320-D, -E
O-360-A, -B, -C, -D, -F, -G, -J IO-360-B, -L, -M LO-360-A AEIO-360-B, -H HO-360-C HIO-360-B
O-540-A, -B, -E, -F, -G, -H, -J, IO-540-A, -C, -D, -N, -T, -V, -W AEIO-540-DSuperior Air Parts, Inc. Engines:
Vantage Engine ® O-360-A
XP360 Engine ® (Experimental) O-360-A, B IO-360-A,B
Superior Air Parts, Inc. ( Superior ) has discovered that cylinder assemblies identified in this Service Bulletin were manufactured from cylinder barrels that were not properly hardened to specification. The soft cylinder barrels may result in fatigue cracking of the cylinder head. The propagation of this crack may lead to head / barrel separation and loss of power in flight. This bulletin requires the removal of Superior cylinder assemblies with the serial numbers listed in this Service Bulletin. These affected serial numbers were manufactured between April and November 2005.
The E revision of this Service Bulletin revises the serial numbers affected and added Superior Air Parts, Inc. engines. If the serial numbers were previously checked to Revision D, they must be rechecked under Revision E. If the serial numbers were checked on Superior 's website and appropriate contact information was provided, then notification will be provided by the website for the changes that are the subject of this revision.
Time of Compliance:
Removal from service must be accomplished before the affected cylinder attains 150 hours time in service. If cylinders have exceeded 150 hours, they must be replaced within the next ten hours of operation.
If you have an affected cylinder(s) or need to determine if your cylinder(s) are affected, go to Superior 's website www.superiorairparts.com/SB0601 and complete recall Form TSF 005 online. In order to complete the form you should have the cylinder part number(s), serial number(s) and time in service readily available. Once all required information is submitted, you will receive an automatic notification as to whether your cylinders are affected. If affected, you will be contacted by a Superior representative within three (3) business days for instructions on replacement of your cylinders.
Replacement cylinders will be sent in accordance with Superior 's warranty policy and replacement coverage will be handled through Superior 's warranty policy. If you have any questions, you may either email us at SB0601@superiorairparts.com or call the SB0601 hotline at 972-829-4617.
Superior reserves the right to replace cylinders with either our Standard Cast ® or Investment Cast cylinders.
The cylinders are identified by part number and serial number on the cylinder flange, as shown in Figure 1.
Serial Number Breakdown
It is important to provide the entire cylinder assembly serial number when complying with this bulletin. The serial number detail will provide Superior additional information with tracking the affected lots and date range. The following is a breakdown of the serial number listed in the above picture:
Superior shall reimburse the following labor allowances for the removal and installation of the affected cylinder assemblies.
First cylinder change on either side.
O/IO-470 IO-520/550 – 6 hours
TSIO-520 – 8 hours
O/IO-320/360 – 6 hours
O/IO-540 – 6 hours
Second or third cylinder on same side add:
O/IO-470 IO-520/550 – 4 hours
TSIO-520 – 5 hours
O/IO-320/360 – 3 hours
O/IO-540 – 3 hours
Superior will reimburse for surface freight only. No air or express freight will be covered.
Superior Air Parts, Inc. will not reimburse claims submitted for researching for recalled cylinders.
All conditions stated in the Superior Air Parts warranty policy will apply.
Replacement under warranty including labor and freight allowance will only be available for cylinders registered 60 (Sixty) days from the issuance date of this Service Bulletin.