80-14-01 PIPER AIRCRAFT CORPORATION: Amendment 39-3818. Applies to Model PA-32-260, serial numbers 32-7800001 through 32-7800008; PA-32-300, serial numbers 32-7740109 through 32-7940290; PA-32R-300, serial numbers 32R-7780215 through 32R-7880068; Model PA-32RT-300, serial numbers 32R-7885001 through 32R-7985105; and Model PA-32RT-300T, serial numbers 32R-7787001, and 32R-7887002 through 32R-7987126 airplanes certificated in all categories.
Compliance required within the next 50 hours time in service after the effective date of this AD unless already accomplished.
To prevent fuel leakage and potential fire hazard, accomplish the following:
(a) De-fuel the aircraft in accordance with the Piper Service or Maintenance Manual for the appropriate model aircraft.
(b) Remove the right hand and left hand fuel tanks in accordance with the Piper Service or Maintenance Manual for the appropriate model aircraft.
(c) 1. For Model PA-32-260 series aircraft, serial numbers 32-7800001 through 32-7800008, and PA-32-300 model aircraft, serial numbers 32-7740109 through 32- 7840202, modify the fuel tank vent system in accordance with the instructions listed in the "Fuel Tank Vent Modification and Vent Hose Replacement Kit," Piper Part Number 763-934V.
2. For Model PA-32-300 series airplanes, serial numbers 32-7940001 through 32-7940290, Models PA-32R-300, PA-32RT-300 and PA-32RT-300T series airplanes, modify the fuel tank vent system in accordance with the instructions listed on the "Fuel Tank Vent Hose Replacement Kit," Piper Part Number 764-011V.
(d) Reinstall the fuel tanks in accordance with instructions in the appropriate Piper Service or Maintenance Manual.
NOTE: Do not allow lines or hoses to twist during installation.
(e) Refuel the aircraft and check for leaks and fuel quantity gauge function.
(f) Make an appropriate maintenance record entry.
An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region.
NOTE: Piper Service Bulletin 646A pertains to this subject.
This amendment becomes effective July 10, 1980.