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EASA EMERGENCY AIRWORTHINESS DIRECTIVE 

AD No : 2007-0153 – E 

Date: 25 May 2007

No person may operate an aircraft to which an Airworthiness Directive applies, except in accordance with the 

requirements of that Airworthiness Directive unless otherwise agreed with the Authority of the State of Registry.

Type Approval Holder’s Name : 

WSK "PZL-Rzeszów" S.A. 

Type/Model designation(s) : 

WSK “PZL-Rzeszow“ PZL-10W engines 

TCDS Number : Poland; CC-190 

Foreign AD : Not applicable 

Supersedure : Not applicable 

ATA 73 Engine Fuel & Control - ALRP-5 fuel fine line filter - Inspection

Manufacturer(s): WSK "PZL-Rzeszów" S.A.

Applicability: WSK “PZL-Rzeszow“ PZL-10W series engines, if ALRP – 5 Fuel 

Metering Pumps of serial numbers as specified in “PZL-Rzeszów” Obligatory 

Bulletin No E-19W123/DOA/2007 are installed. 

These engines are known to be installed, but not limited to W-3A helicopters. 

Reason: The review of manufacturing process and service experience has shown that 

the ALRP-5 Fuel Metering Pumps units released to service between May 

2006 and April 2007 can be vulnerable for seizing. This vulnerability is 

demonstrated by occurrence of aluminium and bronze chips at the filter. 

This condition, if not corrected might lead to seizing of the pump and engine 

RPM decrease. 

This Emergency AD has been issued to require additional inspections of the 

ALRP-5 Fuel Metering Pump Fine Filter to verify the proper operation of the 

pump assembly. 

Effective Date: 30 May 2007 

Compliance: From the effective date of this AD the following actions are mandatory: 
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ALRP-5 pumps having time in service of more than 30 hours and mounted 

at the PZL-10W Engine being installed on helicopter: 

Before next flight, inspect the pump fine filter:

• If no chips are found - continue the service and repeat the inspection 

according to engine maintenance manual schedule after next 50 

hours of service 

• If chips are found – withdraw the pump service for repair in „PZLHydral” S.A. 

ALRP-5 pump having time in service of less or equal to 30 hours and 

mounted at the PZL-10W Engine being installed on helicopter: 

Before next flight, inspect the pump fine filter:

• If no chips are found - continue the service and inspect the filter after 

each flight day, but no more than 4 hours between inspections until 

30 hours of time in service. Repeat this inspection after next 50 

hours of service, according to Engine Maintenance Manual 

schedule. 

• If chips are found – withdraw the pump service for repair in „PZLHydral” S.A. 

Ref. Publications: WSK "PZL-Rzeszów" Obligatory Bulletin No E-19W123/DOA/2007 

Remarks : 1. If requested and appropriately substantiated the responsible EASA 

manager for the related product has the authority to accept Alternative 

Methods of Compliance (AMOC) for this AD. 

2. The safety assessment has requested not to implement the full 

consultation process and an immediate publication and notification [for 

Emergency AD. 

3. Enquiries regarding this Airworthiness Directive should be referred to 

Mr. M. Capaccio, Airworthiness Directive Focal Point - Certification 

Directorate, EASA. E-mail: ADs@easa.europa.eu .

4. For any question concerning the technical content of the requirements 

in this AD, please contact: 

WSK "PZL-Rzeszów " S.A. 

ul. Hetmańska 120 

35-078 Rzeszów 

POLAND 

phone: (+48 17) 854-62-00; 854-61-00 

e-mail: gnot.antoni@wskrz.com