67-23-05 GRAVINER: Amdt. 39-454, Part 39, Federal Register August 1, 1967. Applies to Automatic Fire Extinguishers Installed on, but not Necessarily Limited to, the Airplanes Listed: P/N's 112A, 147A, and 1137A Installed on BAC 1-11 200 and 400 Series Airplanes; P/N 132A Installed on Short Bros. Skyvan SC-7, Series 2 Variant 200; and P/N 142A Installed on Hawker Siddeley DH-125 Series Airplanes. \n\n\tCompliance required as indicated. \n\n\tTo prevent failure of Graviner fire extinguisher containers, accomplish the following: \n\n\t(a)\tWithin the next 25 hours' time in service after the effective date of this AD, unless already accomplished within the last 500 hours' time in service for fire extinguisher containers with a stamp date October 1965 or before, or unless already accomplished within the last 1,500 hours' time in service for fire extinguisher containers with a stamp date later than October 1965, visually inspect Graviner automatic fire extinguisher containers for cracks orleaks and weight in accordance with Graviner Alert Service Bulletin No. 26-A30, Issue No. 2, dated April 21, 1967, or later ARB-approved issue, or FAA-approved equivalent. \n\n\t(b)\tRepeat the inspection specified in paragraph (a) at intervals not to exceed 500 hours' time in service from the last inspection for fire extinguisher containers with a stamp date October 1965 or before. For fire extinguisher containers with a stamp date later than October 1965, reinspect in accordance with paragraph (a) once between 1,400 and 1,500 hours' time in service after the initial inspection. \n\n\t(c)\tReplace all defective fire extinguisher containers with fire extinguisher containers of the same part number with a stamp date later than October 1965 before further flight. \n\n\tThis AD supersedes AD 67-17-04. \n\n\tThis amendment effective August 1, 1967. \n\n\tRevised August 12, 1967.