| 64-17-5 |
Lake |
Rework engine breather tube | all models LA-4 series |
| 64-17-4 |
Champion |
25-hour inspect or replace exhaust system | all 402 models |
| 64-17-3 |
Cessna |
Superseded by 67-3-1 |
| 64-16-8 |
Piper |
Superseded by 64-21-5 |
| 64-16-7 |
Piper |
Superseded by 64-28-3 |
| 64-16-6 |
Piper |
Replace nose gear retraction tube | PA-30 | SN 30-41 thru 30-123 |
| 64-16-5 |
Lyc Eng |
Modify fuel pump | several model Lyc engines |
| 64-15-5 |
Lyc Eng |
Superseded by 65-3-3 |
| 64-10-4 |
Piper |
Remove vanes from carb air box | 250 hp | SN 24-1477 thru 24-3646 |
| 64-10-3 |
Davis |
Disassemble & inspect model FDC-1650 safety belt |
| 63-8-4 |
McCauley |
Superseded by 64-24-4 |
| 63-8-1 |
Gulfstream |
Rework fuel gauge system | SN 1 thru 130, model 520 |
| 63-7-3 |
Piper |
100-hour magnify inspect or reinforce rudder trim tab | all PA-23 models |
| 63-6-2 |
Bellanca |
100-hour inspect or replace rudder bellcrank | all models 14-13,14-19 |
| 63-6-1 |
Beech |
Rework door hinge | SN M50 thru M189 |
| 63-5-3 |
Ayres |
25-hour inspect or reinforce wing spar | SN 1003 thru 1162 |
| 63-27-3 |
Piper |
Replace landing gear retraction motor circuit breaker | all PA-24 models |
| 63-26-3 |
Piper |
Revised 7/71 | 100-hour inspect rudder system | SN 23-1 thru 23-1267 |
| 63-25-1 |
Beech |
Modify front truss & fuselage | SN D1 thru D1500 |
| 63-24-3 |
Piper |
Magnify inspect rudder trim tab control | all PA-23 models |
