Post by Tim Glubaskas on Dec 13, 2015 11:00:46 GMT -9
NPRM Summary:
We propose to supersede Airworthiness Directive (AD) 96-12-12, which applies to certain Piper Aircraft, Inc. Models PA-31, PA-31-300, PA-31-325, and PA-31-350 airplanes. AD 96-12-12 currently requires a one-time inspection of the bulkhead assembly at fuselage station (FS) 317.75 for cracks and the installation of one of two reinforcement kits determined by whether cracks were found during the inspection. Since we issued AD 96-12-12, bulkhead cracks were found on airplanes that had complied with AD 96-12-12 and on additional airplanes not affected by AD 96-12-12. This proposed AD would require repetitive inspections of the bulkhead assembly at FS 317.75 for cracks, repair of cracks as necessary, and the installation of a reinforcement modification. We are proposing this AD to correct the unsafe condition on these products.
Dates
We must receive comments on this proposed AD by January 25, 2016.
______________________________________________________________________________________________________________________________
Basically - Any aircraft without the Large Doubler at FS317 will be getting one within 500 hours of the AD hitting the street.
Out of our 15 Active Navajos, 4 have the large doubler, 10 have the small doubler (which will have to be replaced), and 1 that we just inherited has neither (which will need the large installed)
Piper Aircraft, Inc. Service Bulletin No. 1273A, dated October 22, 2015 is the basis for this AD.
The estimate is 2hrs to inspect the area, 8 hours to install the doubler - this seems a bit light but we will be doing one in the next few weeks to get a better feel for the time it actually takes.
Aviall has around 10 of these kits available at a cost of just over $1,000.
FS317 NPRM link
If you comment - please feel free to leave a copy here for others to review and incorporate into their comments if they feel the need
We propose to supersede Airworthiness Directive (AD) 96-12-12, which applies to certain Piper Aircraft, Inc. Models PA-31, PA-31-300, PA-31-325, and PA-31-350 airplanes. AD 96-12-12 currently requires a one-time inspection of the bulkhead assembly at fuselage station (FS) 317.75 for cracks and the installation of one of two reinforcement kits determined by whether cracks were found during the inspection. Since we issued AD 96-12-12, bulkhead cracks were found on airplanes that had complied with AD 96-12-12 and on additional airplanes not affected by AD 96-12-12. This proposed AD would require repetitive inspections of the bulkhead assembly at FS 317.75 for cracks, repair of cracks as necessary, and the installation of a reinforcement modification. We are proposing this AD to correct the unsafe condition on these products.
Dates
We must receive comments on this proposed AD by January 25, 2016.
______________________________________________________________________________________________________________________________
Basically - Any aircraft without the Large Doubler at FS317 will be getting one within 500 hours of the AD hitting the street.
Out of our 15 Active Navajos, 4 have the large doubler, 10 have the small doubler (which will have to be replaced), and 1 that we just inherited has neither (which will need the large installed)
Piper Aircraft, Inc. Service Bulletin No. 1273A, dated October 22, 2015 is the basis for this AD.
The estimate is 2hrs to inspect the area, 8 hours to install the doubler - this seems a bit light but we will be doing one in the next few weeks to get a better feel for the time it actually takes.
Aviall has around 10 of these kits available at a cost of just over $1,000.
FS317 NPRM link
If you comment - please feel free to leave a copy here for others to review and incorporate into their comments if they feel the need
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