Airworthiness Directive · Amendment 39-13872 · Mooney Airplane Company, Inc., Model M20M Airplanes
Mooney Airplane Company, Inc., Model M20M Airplanes
This AD affects Model M20M airplanes, serial numbers 27-0001 through 27-0321, that are certificated in any category.
The FAA is adopting a new airworthiness directive (AD) to supersede Airworthiness Directive 91-03-15, which applies to certain Mooney Airplane Company, Inc., (Mooney) Model M20M airplanes. AD 91-03- 15 currently requires you to replace the tailpipe coupling with improved tailpipe coupling. Since we issued AD 91-03-15, a fire erupted in the lower left cockpit area on one of the airplanes affected by AD 91-03-15. The V-clamp that attaches the exhaust tailpipe to the turbocharger fell off, which allowed the exhaust tailpipe to detach from the turbocharger. Hot exhaust gases from the turbocharger outlet blasted the lower left firewall. This AD requires you to replace the existing radiant heat shield with the new improved design heat shield, deflector kit; replace the existing exhaust tailpipe-to-turbocharger V- band clamp with the new design V-band clamp; and modify the hydraulic brake fluid poly line. We are issuing this AD to prevent the V-clamp from detaching from the turbocharger and to prevent exposure of the firewall to hot exhaust gases, which could result in an in-flight fire. An in-flight fire could lead to loss of control of the airplane and passenger injury.
To address this problem, you must do the following:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Remove the existing radiant heat shield, part number (P/N) 600182-501 (A), and replace with the new radiant heat shield, P/N 600182-501 (B), and install the new heat shield deflector, P/N 600505-001. Remove the existing V-band clamp, P/N 55677-340M or 40D21162-340M, and install the new V-band clamp, P/N NH1009399-10 or 40D23255-340M | Within 10 hours time-in-service (TIS) after December 1, 2004 (the effective date of this AD), unless already done. If you have already incorporated all parts of Mooney Airplane Company, Inc. Service bulletin M20-283, dated January 3, 2004, then you only have to replace the tailpipe V-band clamp with the new configuration V-band clamp, P/N NH109399-10 or 40D23255-340M | Follow Mooney Airplane Company, Inc. Service Bulletin M20-283A, dated March 30, 2004. |
| (2) Modify the hydraulic brake fluid poly line | Within 10 hours TIS after December 1, 2004 (the effective date of this AD), unless already done. If you have already incorporated all parts of Mooney Airplane Company, Inc. Service Bulletin M20-283, dated January 3, 2004, then you only have to replace the tailpipe V-band clamp with the new configuration V-band clamp, P/N NH109399-10 or 40D23255-340M | Follow Mooney Airplane Company, Inc. Service Bulletin M20-283A, dated March 30, 2004. |
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
