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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
Amendment 39-3363; AD 78-25-03
Airworthiness Directives; THE DEUTSCH COMPANY, METAL COMPONENTS DIVISION: Applies to P/N 94B0100004F0160 and 94F0100004F0166 Hose Assemblies Marked With Identification 4Q77 or 1Q78
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DATES: Effective January 15, 1979.
78-25-03 THE DEUTSCH COMPANY, METAL COMPONENTS DIVISION: Amendment 39-3363. Applies to P/N 94B0100004F0160 and 94F0100004F0166 hose assemblies marked with identification 4Q77 or 1Q78 which may be installed on various aircraft but which are known to be installed on Piper Models PA-23-250, PA-28R-180, PA-28R-200, PA-28R-201, PA-28R-201T, PA-31, PA-31-300, PA-31-325, PA-31-350, PA-31P, PA-31-TI, PA-31-T, PA-34-200T, and PA-44-180 aircraft.
NOTE 1: Hose P/N and manufacturing date codes (e.g. 4Q77 and 1Q78) are shown on a metal tag attached to the hose assemblies.
a) Deutsch P/N 94B0100004F0160 is Piper P/N 17766-27, TSO C-53a Type A.
b) Deutsch Part No. 94F0100004F0166 is Piper P/N 63901-41, TSO C-53a Type C.
Compliance required as indicated, unless already accomplished.
To prevent an unsafe condition in the various aircraft systems in which these hoses may be installed, accomplish the following:
A. Within the next ten hours time in service after the effective date of this (AD), inspect to determine if hose assembly P/N 94B0100004F0160 or 94F0100004F0166 with manufacturing date 4Q77 or 1Q78 is installed.
B. If the hose assemblies as in A above are not installed no further action is required by this (AD).
C. If the hose assemblies in A above are installed, prior to further flight,
(1) Remove and replace hose assemblies.
(2) Check system for contamination. Purge system if evidence of contamination is found.
NOTE 2: Piper Service Bulletin No. 611 refers to purging procedures for Piper Models PA -28, -34, and -44. Piper Service Bulletin No. 629 refers to purging procedures for Piper Models PA-31 and PA-23.
NOTE 3: The following is a list of Piper Model, Serial Nos. and hose application which are believed to have suspect hoses installed. Possible hose application is not limited to this list.
D. Special flight permits may be issued in accordance with FARs 21.197 and 21.199 to operate aircraft to a base for the accomplishment of the inspection required by paragraph A of this AD.
E. Equivalent inspections and repairs may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.
F. Upon submission of substantiating data, through an FAA Aviation Safety Inspector, the Chief, Aircraft Engineering Division, FAA Western Region may adjust the compliance time for hose replacement.
This amendment becomes effective January 15, 1979, for all persons except those to whom it was made effective by priority message dated October 27, 1978.