Airworthiness Directive · Amendment 39-15807 · Wytwornia Sprzetu Komunikacyjnego “PZL-Rzeszow” S.A. PZL-10W Turboshaft Engines
Wytwornia Sprzetu Komunikacyjnego “PZL-Rzeszow” S.A. PZL-10W Turboshaft Engines
This AD applies to Wytwornia Sprzetu Komunikacyjnego “PZL-Rzeszow” S.A. (WSK) PZL-10W turboshaft engines, with the following serial numbers of ALRP-5 fuel metering pumps installed. These engines are installed on, but not limited to, PZL Swidnik W3/W3A helicopters.
| PB 99040002 | PB 94030003 | PA 07927B |
| PB 98050002 | PB 93120004 | PB 96080005 |
| PA 058701B | PA 05913B | PB 07010001 |
| PB 99020003 | PB 95020005 | PB 07010002 |
| PB 97010002 | PB 97030004 | PA 04891B |
| PA 02914B | PB 97060001 | PA 11892B |
| PA 11881B | PB 99040001 | PA 10903B |
| PB 94020003 | PB 95050003 | PA 02915B |
| PB 93050006 | PB 94110002 | PA 02903B |
| PA 06918B | PB 93080005 | PA 06891B |
| PA 07912B | PB 93120002 | PB 97050002 |
| PB 02935 | PB 97070003 | PA 07882B |
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following visual inspections using paragraph (f) of this AD.
(1) Visually inspect the fuel metering pump fine filter before further flight.
(2) For fuel metering pumps with more than 30 hours time-in-service (TIS) on the effective date of this AD, re-inspect the filter within 5 hours TIS after reaching 50 hours TIS since the initial inspection specified in paragraph (e)(1) of this AD.
(3) For fuel metering pumps with 30 or fewer hours TIS on the effective date of this AD, re-inspect the filter after each flight day, not to exceed 4 hours TIS between each inspection, until reaching 30 hours TIS.
(4) Re-inspect the filter within 5 hours TIS after reaching 50 hours TIS since the last inspection specified in paragraph (e)(3) of this AD.
(5) If the filter fails any inspection, remove the fuel metering pump from service and install a serviceable fuel metering pump.
(f) Visually inspect the pump fine filter as follows:
(1) Remove the fine filter from the ALRP-5 pump and visually inspect it. Information on removing the fine filter can be found in PZL-10W Maintenance Manual, Document No. 19.0.400.
(2) If there is no evidence of any metal chips on the filter, wash and reinstall the filter, and vent the fuel system.
(3) If metal chips are found on the filter, evaluate the chips as follows:
(i) Aluminum or bronze chips are not allowed.
(ii) Metallic particles seen as reflection of light are allowable in maximum quantity of 10 per filter segment (row) but not more than 30 for the entire filter.
For the purpose of this AD, a serviceable fuel metering pump is one that does not have a serial number listed in this AD, is one that has successfully completed the inspections required by this AD, or is one listed in this AD that has been repaired since being listed in WSK Obligatory Bulletin No. E-19W123/DOA/2007, dated May 2007.
