| AD Number | 48-21-01 | Status | Active |
| Effective Date | Not specified | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | N/A |
| Product Type | ["Engine"] | Product Subtype | Not specified |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Wytwornia Sprzetu Komunikacyjnego |
| Model(s) | 6A4-150-B3 6A4-150-B31 |
48-21-01 BELLANCA: Applies to All Aircraft Equipped With Franklin Model 6A4-150- B3 and B31 Engines.
Compliance required after each 25 hours of operation.
To prevent possible binding of accelerator pump linkage in Marvel-Schebler MA-3-SPA carburetor, check for worn accelerator pump linkage. Worn parts should be replaced. Marvel- Schebler have a kit (Part A666-581) available for this purpose.
(Franklin Service Bulletin No. 61 covers this same subject.)