Service Bulletins
| AD Number | Context |
| AD 78-25-05 | LARGE ALUMINUM SCREEN REPLACMENT |
| AD 81-15-03 | REPLACE LARGE ALUMINUM SCREEN |
| AD 95-03-02 | GASKET REPLACEMENT |
| AD 96-09-06 |
SCREEN AND INSTALL GASKET RETAINERS ASSEMBLY WITH INTEGRAL GASKET LIP |
| AD 2002-26-03 | ADDITION OF A FRONT SCREEN |