AD 67-22-05

67-22-05 BRITISH AIRCRAFT: Amdt. No. 39-447, Part 39, Federal Register July 20, 1967. Applies to Models BAC 1-11 203/AE, 204/AF, 212/AR, 401/AK, and 410/AQ Series Airplanes.

Compliance required as indicated.

To prevent the use of unserviceable dropout oxygen mask face pieces, accomplish the following:

(a) Within the next 600 hours' time in service after the effective date of this AD, unless already accomplished within the last 600 hours' time in service, and thereafter at intervals not to exceed 1,200 hours' time in service from the last inspection, visually examine all oxygen mask face pieces, Part Nos. WK 28420, WK 28171, and WK 31342, for deterioration in accordance with BAC 1-11 Alert Service Bulletin 35-A-PM 2795, Issue No. 1, dated January 16, 1967, or later ARB-approved issue, or FAA-approved equivalent.

(b) Replace deteriorated oxygen mask face pieces found during the inspections required by paragraph (a) with either serviceable face pieces of the same partnumber or modified face pieces, Walter Kidde Part Nos. WK 33298, WK 33299, and WK 33300, in accordance with BAC Service Bulletin 35-PM 2795, or later ARB-approved issue, or FAA-approved equivalent, before further flight.

(c) The repetitive inspections required by paragraph (a) may be discontinued when the oxygen face mask pieces are modified in accordance with BAC Service Bulletin 35-PM 2795, or later ARB-approved issue, or FAA-approved equivalent.

This amendment effective August 19, 1967.