EASA AD No.: 2011-0030 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2011-0030 

Date: 25 February 2011 

Note: This Airworthiness Directive (AD) is issued by EASA, acting in accordance with 

Regulation (EC) No 216/2008 on behalf of the European Community, its Member States 

and of the European third countries that participate in the activities of EASA under Article 

66 of that Regulation.

This AD is issued in accordance with EC 1702/2003, Part 21A.3B. In accordance with EC 2042/2003 Annex I, Part M.A.301, 

the continuing airworthiness of an aircraft shall be ensured by accomplishing any applicable ADs. Consequently, no person 

may operate an aircraft to which an Airworthiness Directive applies, except in accordance with the requirements of that 

Airworthiness Directive unless otherwise specified by the Agency [EC 2042/2003 Annex I, Part M.A.303] or agreed with the 

Authority of the State of Registry [EC 216/2008, Article 14(4) exemption]. 

Type Approval Holder’s Name : 

WSK "PZL-Rzeszów" S.A.

Type/Model designation(s) : 

PZL-10W series engines 

TCDS Number: Poland No. CC-190 

Foreign AD: Not applicable 

Supersedure: None 

ATA 73 Engine Fuel & Control - Engine Fuel Pump - Inspection 

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

Applicability: PZL-10 W engines equipped with an ALRP-5 fuel pump. 

These engines are known to be installed on, but not limited to PZL W-3AS 

and PZL W-3A helicopters. 

Reason: An uncommanded engine in-flight shutdown of a PZL-10W has been 

recently reported. The investigation has shown that the uncommanded 

engine in-flight shutdown was due to excessive spline wear on the fuel 

metering pump shaft. 

This condition, if not identified and corrected, may lead to further 

uncommanded in-flight engine shutdowns and consequent emergency 

landings of the affected helicopters. 

To address this unsafe condition, WSK "PZL-Rzeszów" S.A. has 

developed an inspection programme of the fuel metering pump shaft. 

For the reasons described above, this AD requires an inspection of the 

fuel metering pump shaft and the accomplishment of the associated 

corrective actions, as applicable. 

This AD is considered to be an interim measure and, depending on the 

inspection results provided by operators and on the on-going investigation, 

further AD actions may follow.
EASA AD No.: 2011-0030 

EASA Form 110 Page 2/2 

Effective Date: 11 March 2011 

Required action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

(1) Within the compliance time indicated in Table 1 of this AD, as 

applicable to engine configuration, perform a one time inspection of the 

spline teeth on the fuel metering pump shaft for excessive wear in 

accordance with WSK Obligatory Bulletin no. E-19W147B/DOA/2010. 

Table 1 

Engine configuration at the 

effective date of this AD 

Compliance time for the 

inspection 

Engine fitted with a fuel 

metering pump that has 

accumulated greater than or 

equal to 1 000 hours of engine 

operation since new, or since 

last overhaul. 

Within a further 25 hours of 

engine operation after the 

effective date of this AD. 

Engine fitted with a fuel 

metering pump that has 

accumulated less than 1 000 

hours of engine operation 

since new, or since last 

overhaul. 

Between 975 and 1 000 hours of 

engine operation since new or 

since last overhaul, or within 25 

hours of engine operation after 

the effective date of this AD, 

whichever occurs later.

(2) If, during the inspection required by paragraph (1) of this AD, any 

discrepancy is found, any further engine operation is prohibited and; 

within 10 days after accomplishment of the inspection, report the 

findings to "WSK PZL-Rzeszów" S.A. 

(3) After the effective date of this AD, do not install an ALRP-5 fuel pump 

on an engine unless in compliance with the requirements of this AD. 

Ref. Publications: WSK "PZL-Rzeszów" S.A. Obligatory Bulletin no. E-19W147B/DOA/2010. 

The use of later approved revisions of this document is acceptable for 

compliance with the requirements of this AD. 

Remarks : 1. If requested and appropriately substantiated, EASA can approve 

Alternative Methods of Compliance for this AD. 

2. The required actions and the risk allowance have granted the 

issuance of a Final AD with Request for Comments, postponing the 

public consultation process after publication. 

3. Enquiries regarding this AD should be referred to the Airworthiness 

Directives, Safety Management & Research Section, 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 

fax: (+48 17) 8620750 

e-mail: antoni.gnot@wskrz.com