Textron Lycoming Fuel Injected Reciprocating Engines

Textron Lycoming Fuel Injected Reciprocating Engines

2003-14-03 TEXTRON LYCOMING: Amendment 39-13222. Docket No. 97-ANE-50-AD. Supersedes AD 98-18-12, Amendment 39-10728.

Airworthiness Directives; Textron Lycoming Fuel Injected Reciprocating Engines

SUMMARY: This amendment supersedes an existing airworthiness directive (AD), that is applicable to certain Textron Lycoming reciprocating engines with certain Crane/Lear Romec "AN" rotary fuel pumps installed. That AD currently requires initial and follow-up torque check inspections of pump relief valve attaching screws. This amendment requires the same initial and follow-up torque check inspections of relief valve attaching screws, and adds as a terminating action, replacement of the affected fuel pump at or before the overhaul interval, with a fuel pump having a new design valve housing. This amendment is prompted by the introduction of a new design pump relief valve housing and associated parts that provide enhanced resistance to fuel leakage, and the need for clarification of the requirements of the current AD. The actions specified by this AD are intended to prevent rotary fuel pump leaks, which could result in an engine failure, engine fire, and damage to or loss of aircraft.

DATES: Effective August 14, 2003. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of August 14, 2003.

    Applicability: This airworthiness directive (AD) is applicable to Textron Lycoming IO-320, LIO-320, IO-360, HIO-360, TIO-360, LTIO-360, GO-435, GO-480, IGO-480-A1B6, IO-540, IGO-540, AEIO-540, HIO-540, TIO-540, LTIO-540, TIGO-541, IO-720, and TIO-720 reciprocating engines, with Crane/Lear Romec RG9080, RG9570, and RG17980 series "AN" rotary fuel pumps listed in Table 1 installed. Table 1 follows:

             Table 1.--Applicable Pump Cross Reference List
------------------------------------------------------------------------
                                           Textron Lycoming Part Number
            Lear/Romec Series                          (P/N)
------------------------------------------------------------------------
RG9080F2................................  68262, 68262-85
RG9080J4A...............................  LW-13909, LW-13909-85
RG9080J6A...............................  LW-14444, LW-14444-85
RG9080J7A...............................  LW-13920, LW-13920-85
RG9080J8A...............................  LW-15740, LW-15740-85
RG9570K1................................  62E22288
RG9570P/P1..............................  LW-19012
RG17980.................................  74547, 74547-85
RG17980A................................  76188, 76188-85
RG17980D................................  76486, 76486-85
RG17980E................................  77443, 77443-85
RG17980J................................  78993, 78993-85
RG17980K................................  LW-11166, LW-11166-85
RG17980P................................  LW-12534, LW-12534-85
RG17980U................................  62D21153, 62D21
------------------------------------------------------------------------

These engines are installed on, but not limited to fuel injected, reciprocating engine-powered aircraft manufactured by Cessna, The New Piper, Inc., Mooney, Raytheon (Beech), Bellanca, Champion, Partenavia, Rockwell, Schweizer, Enstrom, Aerospatiale (SOCATA), Maule, Aero Commander, Helio, Hiller, and Pacific Aerospace Corp.

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