84-18-07: Discharge Cartridges

84-18-07 WALTER KIDDE AND OVERLAND AVIATION SERVICE CO: Amendment 39-4915. Applies to Walter Kidde discharge cartridges Part Number (P/N) 873571, 876296, 897776, and 898558 manufactured prior to July 1984, and Overland Aviation Service Co. discharge cartridges P/N OA873571, OA876296, and OA876299 manufactured prior to August 7, 1984. Compliance: Required within thirty (30) calendar days or at installation on any aircraft, whichever occurs later, unless already accomplished. To prevent hazards in flight associated with the non-operation of the fire extinguisher caused by non-firing of the discharge cartridge(s), accomplish the following: (a) Pull the applicable circuit breakers and disconnect the fire extinguisher bottle electrical plugs from the discharge cartridge. Inspect the electrical receptacle of the cartridge for compressed aluminum foil, which may have the appearance of solder and remove if present. Reinstall the plug and reset the applicable circuit breaker. (b) An equivalent means of compliance with this AD may be used if approved by the Manager, Atlanta Aircraft Certification Office, 1075 Innerloop Road, College Park, Georgia 30337; telephone (404) 763-7248. This amendment becomes effective on September 21, 1984.