| AD Number | 70-08-04 | Status | Active |
| Effective Date | May 14, 1970 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-975 |
| Product Type | ["Aircraft"] | Product Subtype | ["Large Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Vickers-Armstrongs (Aircraft Limited) |
| Model(s) | Viscount 744 Viscount 745D Viscount 810 |
70-08-04 BRITISH AIRCRAFT CORPORATION: Amdt. 39-975. Applies to Viscount Models 744, 745D, and 810 series airplanes.
Within the next 750 hours' time in service after the effective date of this AD, unless already accomplished, replace the obsolete cabin blower (supercharger) drive quill with a serviceable or reworked drive quill in accordance with Dowty Rotol Service Bulletin No. 83-407, Revision 2, dated August 1969, for models 744 and 745D series airplanes; or Dowty Rotol Service Bulletin No. 83-378, dated August 1968, for Model 810 series airplanes; or an FAA- approved equivalent as follows:
Obsolete Drive Quill P/N
Replacement Drive Quill P/N
602206000 (Models 744 and 745D)
602206002
G28165 (Models 744 and 745D)
601017004
G2575 (Model 810)
G28302
(British Aircraft Corporation Viscount Bulletins for Modification Nos. D3237 and G.2083 cover this same subject.)
This amendment becomes effective May 14, 1970.