AD 2022-01-03
Unsafe Condition
The spindle geometries of the fire extinguishers were found to be out of tolerance, which could cause a non-detectable seizure of the spindle that could cause the fire extinguisher to be inoperative.
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Required Actions
Remove affected fire extinguishers from service and prohibit installing affected fire extinguishers on any aircraft.
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Compliance Time
Before further flight
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Affected Aircraft
Umlaut Engineering GmbH (previously P3 Engineering GmbH) HAFEX (Halon-Free) hand-held fire extinguishers, part numbers P3APP003010A and P3APP003010C, with a manufacturing date of March 2019 through July 2019 inclusive and with a serial number listed in Appendix 1 of Umlaut Vendor Service Bulletin Doc. No. P3VSB000001, Issue C, dated December 13, 2019.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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