- Effective
- November 25, 1977
- Models
- 188A, 188C
- Data sheet
- TCDS4A22
- Registered aircraft
- 4 matched by model
- Product
- Aircraft · Large airplane
- Amendment
- 39-3059
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 19 KB | 2502bf59…9815320 | FAA DRS (API key needed) |
On this page
The airworthiness directive
77-21-09 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-3059. Applies to Model 188A and 188C airplanes, certificated in all categories.
Compliance is required within 100 hours additional time in service after the effective date of this AD, unless already accomplished.
To prevent possible jamming of the aileron/rudder remove the aileron rudder balance interconnect mechanism, in accordance with instructions given in Lockheed Electra Service Bulletin Alert 88/SB-698, dated September 12, 1977, or later FAA approved revision.
This amendment becomes effective November 25, 1977.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 4
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1959 | 2 |
|---|---|
| 1960 | 1 |
1 with no year recorded