| AD Number | 81-24-09 | Status | Active |
| Effective Date | December 28, 1981 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-4267 |
| Product Type | ["Aircraft"] | Product Subtype | ["Large Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Lockheed Martin Corporation |
| Model(s) | 188A 188C |
81-24-09 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-4267. Applies to Lockheed Model 188A and 188C Series airplanes, certificated in all categories.
Compliance required within 30 days after the effective date of this AD, unless already accomplished.
To prevent a reduction in performance which could result in a hazardous condition, incorporate in the Limitations Section of the FAA-Approved Airplane Flight Manual a revision which specifies that all takeoffs and approaches must be performed with the synchronization control in the following position:
For Hamilton Standard Propellers -
SYNC MASTER switch-OFF
For Aeroproducts Propellers -
Synchronizer switch-SYNCH OFF.
This amendment becomes effective December 28, 1981.