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AD 2022-01-03 Umlaut Engineering GmbH (Previously P3 Engineering)

Federal Register Volume 87, Number 20

(Monday, January 31, 2022)]

[Rules and Regulations] [Pages 4797-4800] From the Federal Register Online via the Government Publishing Office [] [FR Doc No: 2022-01859]


DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2021-0843; Project Identifier MCAI-2020-00256-Q; Amendment 39-21891;

AD 2022-01-03 RIN 2120-AA64 Airworthiness Directives;

Umlaut Engineering GmbH (Previously P3 Engineering GmbH) HAFEX (Halon-Free) Hand-Held Fire Extinguishers

AGENCY: Federal Aviation Administration (FAA), DOT. ACTION:

Final rule.


SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Umlaut Engineering GmbH (previously P3 Engineering GmbH) HAFEX (Halon-free) hand-held P3HAFEX fire extinguishers (fire extinguishers). This AD was prompted by reports of a quality control issue on certain fire extinguishers, where the spindle geometries of the fire extinguishers were found to be out of tolerance. This AD requires removing affected fire extinguishers from service. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective March 7, 2022. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of March 7, 2022. ADDRESSES: For Umlaut service information identified in this final rule, contact Umlaut Engineering, Blohmstrasse 12, Hamburg, Germany 21079, Phone: 49 0 40 75 25 779 0, email:, or web: You may view this material at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call (817) 222- 5110. It is also available in the AD docket at by searching for and locating Docket No. FAA-2021-0843.

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