AD 2021-22-07
Unsafe Condition
Prolonged exposure to high temperature conditions can dislodge the spindle in the fire extinguisher head, subsequently making the fire extinguisher inoperative.
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Required Actions
Within 30 days after the effective date of this AD, and thereafter at intervals not to exceed 6 months, repetitively inspect an affected fire extinguisher and depending on the results, remove the fire extinguisher from service. For an affected fire extinguisher that is installed on any aircraft that has not been in operation for 30 or more consecutive days, or if it cannot be determined how long an aircraft has not been in operation, this AD requires those actions before further flight and thereafter at intervals not to exceed 6 months. This AD also prohibits installing, as a replacement part or as an original installation, an affected fire extinguisher on any aircraft unless it passes the required inspections.
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Compliance Time
Within 30 days after the effective date of this AD
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Affected Aircraft
Umlaut Engineering GmbH, formerly P3 Engineering GmbH, fire extinguishers, having part number (P/N) P3APP003010A, P3APP003010B, or P3APP003010C.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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