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PIPER AIRCRAFT CORP. AIRWORTHINESS DIRECTIVE SMALL AIRCRAFT

90-23-18 PIPER: Amendment No. 39-6782. Docket No 90-CE-19-AD.

Applicability: Models PA23, PA23-150, PA23-160 (serial numbers (S/N) 23-1 through 23-2046), PA23-235 (S/N 27-505 through 27-622), PA23-250, and PA23-250(6) (S/N 27-1 through 27-7405476, and S/N 27-7554001 through 27-8154030) airplanes, certificated in any category.

Compliance: Required within the next 180 calendar days after the effective date of this AD, unless already accomplished.

To preclude rough engine operation or complete power interruption caused by water contamination in the fuel, accomplish the following:

(a)

For Models PA23, PA23-150, and PA23-160 airplanes:

		(1)	Incorporate into the Owner Handbook and/or Pilots Operating Manual the instructions contained in Part I of Piper Service Bulletin (SB) No. 827A, dated November 4, 1988.
		(2)	Modify the airplane by the installation of Piper Dual-Fuel Drain Kit (Part Number (P/N) 765-363), in accordance with the instructions in Part II of Piper SB No. 827A, dated November 4, 1988.
		(3)	Modify the airplane by the installation of Piper Fuel Tank Wedge Kit (P/N 599-367), in accordance with the instructions in Part I of Piper SB No. 932A, dated August 30, 1990.

	(b)	For Models PA23-235, PA23-250, and PA23-250(6) airplanes equipped with unbaffled fuel tanks, modify the airplane by the installation of Piper Fuel Tank Wedge Kit (P/N 599-367), in accordance with the instructions in Part I of Piper SB No. 932A, dated August 30, 1990.
	(c)	For models PA23-250 and PA23-250(6) airplanes equipped with baffled fuel cells, modify the airplane by the installation of enlarged fuel bowls (P/N 89483-009 or P/N 89483-010) in accordance with the instructions in Part II of Piper SB No. 932A, dated August 30, 1990.
	(d)	Airplanes may be flown in accordance wit FAR 21.197 to a location where this AD may be accomplished.
	(e)	An alternate method of compliance of adjustment of the initial compliance time that provides an equivalent level of safety may be approved by the Manager, Atlanta Aircraft Certification Office, 1669 Phoenix Parkway, Suite 210C, Atlanta, Georgia 30349.

NOTE: The request should be forwarded through an FAA Maintenance Inspector, who may add comments and send it to the Manager, Atlanta Aircraft Certification Office.

All persons affected by this directive may obtain copies of the documents referred to herein upon request to the Piper Aircraft Corporation, 2926 Piper Drive, Vero Beach, Florida 32960; telephone (407) 567-4366 or may examine these documents at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106.

This amendment (39-6782, AD 90-23-18) becomes effective on December 10, 1990.

FOR FURTHER INFORMATIN CONTACT:

W. H. Trammell, Aerospace Engineer, Propulsion Branch, Atlanta Aircraft Certification Office, 1669 Phoenix Parkway, Suite 210C, Atlanta, Georgia 30349; Telephone (404) 991-3810.

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