AD 84-18-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Overland Aviation | Walter Kidde | Discharge Cartridges | Airworthiness Directives; WALTER KIDDE AND OVERLAND AVIATION SERVICE CO. Discharge Cartridges Part Number (P/N) 873571, 876296, 897776, and 898558 |
Unsafe Condition
Non-firing of discharge cartridges may cause non-operation of the fire extinguisher, creating hazards in flight.
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Required Actions
Pull circuit breakers, disconnect fire extinguisher bottle electrical plugs, inspect and remove compressed aluminum foil from the electrical receptacle if present, reinstall the plug, and reset circuit breakers. An equivalent means of compliance may be used if approved.
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Compliance Time
within thirty (30) calendar days or at installation on any aircraft, whichever occurs later, unless already accomplished
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Affected Aircraft
Walter Kidde discharge cartridges P/N 873571, 876296, 897776, 898558 manufactured prior to July 1984; Overland Aviation Service Co. discharge cartridges P/N OA873571, OA876296, OA876299 manufactured prior to August 7, 1984
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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