FAA: Plane Lavatory Extinguishers Might Fail in Fires!
Published Date: 3/18/2025
Rule
Summary
If you fly or work with ATR42 or ATR72 airplanes, listen up! The FAA found a problem with some lavatory fire extinguishers that might leak and not work in a fire. Starting April 22, 2025, these extinguishers must be checked and replaced if needed to keep everyone safe—no shortcuts allowed!
Analyzed Economic Effects
2 provisions identified: 1 benefits, 1 costs, 0 mixed.
Mandatory lavatory extinguisher checks and fixes
If you operate the listed ATR42 or ATR72 airplanes, you must perform a weight-check inspection of the lavatory (waste bin) fire extinguisher and replace any unit that measures more than 2.0 grams below the gross weight printed on its label. This AD is effective April 22, 2025, applies to the ATR42-200/300/320/500 and specified ATR72 models, and the FAA estimates it affects 77 U.S.-registered airplanes; the inspection is estimated at 1 work-hour ($85) per airplane and replacement (if needed) is estimated at $85 labor plus $640 parts ($725 total). The AD also prohibits installation of affected parts.
Reduced lavatory fire risk for passengers
If you fly on the listed ATR42 or ATR72 airplanes, the FAA requires checks and replacement of certain lavatory fire extinguishers that could leak at the eutectic tip and lose pressure. Starting April 22, 2025, this action is intended to prevent a loss of extinguishing capability that could allow an uncontrolled lavatory fire.
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