- Models
- DC-6, DC-6A, DC-6B
- Registered aircraft
- 17 matched by model
- Product
- Aircraft · Large airplane
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 | 9089ae5b…e5e570a | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-42-19 DOUGLAS: (Was Service Note 5 of AD-781-1.) Applies to the Following DC-6 Aircraft: Serial Numbers 42854 to 42894, Inclusive; 43000 to 43012, Inclusive; 43055, 43056, and 43062.
Inspection required at every engine change.
After the stop holes are drilled in the tail stub extension of the horizontal stabilizer front spar caps, as required by AD 47-42-11, inspect for signs of cracks, or progress of cracks, at each engine change period. If the aircraft has been modified to incorporate the elevator fifth hinge modification, the inspection period may be extended to every other engine change period, but not to exceed 3,000 hours of airplane operation. If cracks progress beyond the stop hole, operation of the airplane must be discontinued until additional corrective measures have been determined.
Affected TCDS · 3
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 17
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1953 | 1 |
|---|---|
| 1954 | 2 |
| 1956 | 1 |
| 1957 | 3 |
| 1958 | 3 |
| 1959 | 1 |
6 with no year recorded