AD 67-32-05

67-32-05 VICKERS: Amdt. 39-524 Part 39 Federal Register December 12, 1967. Applies to Viscount Models 744, 745D and 810 Series Airplanes.

Compliance required as indicated.

To prevent failure of the hydraulic flexible hoses installed in the nose wheel steering system, accomplish the following:

(a) Replace hydraulic system flexible hoses P/N 70126-163, 70826-13, and 7246-1, located on the top of the nose oleo in the nose steering system, with 6,500 or more hours' time in service or which have been installed for 4 1/2 or more years on the effective date of this AD with new hoses of the same part number within the next 8 months or 1,500 hours' time in service, whichever occurs sooner after the effective date of this AD, and thereafter at intervals not to exceed 5 years or 8,000 hours' time in service, whichever occurs sooner from the last replacement.

(b) Replace hydraulic system flexible hoses P/N 70126-163, 70826-13, and 72426-1, located on the top of the nose oleo leg in the nose steering system, with less than 6,500 hours' time in service and which have been installed for less than 4 1/2 years on the effective date of this AD with new hoses of the same part number before the accumulation of 5 years or 8,000 hours' time in service, whichever occurs sooner after the effective date of this AD, and thereafter at intervals not to exceed 5 years or 8,000 hours' time in service, whichever occurs sooner from the last replacement.

(British Aircraft Corporation Preliminary Technical Leaflets (PTLS) Nos. 268 (700 Series) and 131 (800 Series), Issue 1, dated June 22, 1967, pertain to this subject.)

This amendment effective January 11, 1968.