Airworthiness Directive · Amendment 39-18281 · Pratt & Whitney Canada Corp. Turboprop Engines
Pratt & Whitney Canada Corp. Turboprop Engines
This AD applies to Pratt & Whitney Canada Corp. (P&WC) PW120, PW121, and PW121A turboprop engines with post SB 21610 configuration; PW124B, PW127, PW127E, and PW127F turboprop engines with post SB 21607 configuration; PW127E and PW127F turboprop engines with serial numbers (S/Ns) PCE-EB0366 and earlier; PW127G turboprop engines with S/Ns PCE-AX0275 and earlier; and PW127M turboprop engines with S/Ns PCE-ED0810 and earlier.
We are superseding airworthiness directive (AD) 2014-14-02 for certain Pratt & Whitney Canada Corp. (P&WC) PW120, PW121, PW121A, PW124B, PW127, PW127E, PW127F, PW127G, and PW127M turboprop engines. AD 2014-14-02 required removal of the O-ring seal from the fuel manifold fitting. This new AD requires replacement of the fuel nozzle and the fuel manifold flow adapter. This AD was prompted by reports of fuel leaks at the interface between the fuel manifold and the fuel nozzle that resulted in engine fire. We are issuing this AD to correct the unsafe condition on these products.
(1) Remove the O-ring seal from the fuel manifold fitting,
(2) Remove fuel manifold flow adapter, part numbers (P/Ns) 3059754-01, 3059757-01, and 3059760-01; and
(3) Install a fuel nozzle gasket and fuel manifold flow adapter that are eligible for installation, in accordance with paragraphs 3.A, 3.B, and 3.C of P&WC SB No. PW100-72-21861, dated November 21, 2014.
After the effective date of this AD, fuel manifold adapter, P/Ns 3059754-01, 3059757-01, and 3059760-01, and fuel manifold gasket, P/N 3079354-01, are not eligible for installation in any engine.
For the purpose of this AD, an engine shop visit is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine flanges. The separation of engine flanges solely for the purpose of transportation without subsequent engine maintenance does not constitute an engine shop visit.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
