| AD Number | 67-28-03 | Status | Active |
| Effective Date | October 21, 1967 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-494 |
| Product Type | ["Aircraft"] | Product Subtype | ["Small Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | Federal Register: October 21, 1967 | ||
| Manufacturer(s) | Viking Air Limited |
| Model(s) | DHC-6-1 DHC-6-100 DHC-6-200 DHC-6-300 |
67-28-03 de HAVILLAND: Amdt. 39-494, Part 39, Federal Register October 21, 1967. Applies to Type DHC-6 Aircraft.
Compliance required as indicated.
To preclude loss of the horizontal stabilizer, accomplish the following:
(a) Within the next 15 hours' time in service after the effective date of this AD, unless already accomplished, check that each of the four horizontal tailplane to aft fuselage 5/16 inch diameter bolts, P/N's NAS 625-36 and NAS 625-53, are torqued to a value of 225 to 250 inch-pounds. If correct, no further action is necessary. If loose, comply with (b).
(b) Re-torque loose bolts to a value of 225 to 250 inch-pounds and recheck every 7 hours' time in service to assure that this value is maintained.
(c) The check required by (b) may be discontinued when a modification, approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region is incorporated.
(d) Upon request with substantiating data submitted through an FAA maintenance inspector, the compliance times specified in this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.
This amendment effective October 21, 1967.