AD 99-11-07 64 FR 27911

This amendment adopts a new airworthiness directive (AD) that applies to certain Mooney Aircraft Corporation (Mooney) Model M20R airplanes. This AD requires either fabricating and installing a placard that specifies using the air conditioning system during cruise operations only or deactivating the air conditioning system so it cannot be used. This AD is the result of reports of the existence of dangerous levels of carbon monoxide during taxi, climb, and descent operations of the above-referenced airplanes. The actions specified by this AD are intended to prevent dangerous levels of carbon monoxide from entering the airplane cabin during takeoff, climb, and descent operations caused by the present flight cabin sealing design of the affected airplanes, which could result in passenger injury.