EASA AD No : 2010-0123

EASA Form 110 Page 1/2 

## EASA AIRWORTHINESS DIRECTIVE

AD No.: 2010-0123 [Correction: 22 June 2010]

Date: 22 June 2010
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.3 B. In accordance with EC 2042/2003 Annex I, Part M.A.301, the continuing airworthiness of an aircraft s hall be ensured by accomplishing any applicable ADs. Consequently, no person may opera te an aircraft to which an AD applies, except in accordance with the requirements of that AD, unless otherwise specified by the Agenc y [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 : Piaggio Aero Industries S.p.A. Type/Model designation(s) : P.180 series aeroplanes

TCDS Number : EASA.A.059 Foreign AD : Not applicable Supersedure : None



### ATA 79 Oil - Engine Oil Dipstick – Inspection / Replacement

Manufacturer(s): Piaggio Aero Industries S.p.A. Applicability: Model P.180 Avanti and P.180 Avant i II aeroplanes, all serial numbers. Reason: Some cases of failure of engine oil dipsticks, installed on Pratt & Whitney Canada (P&WC) PT6A66 and PT6A66B engines, were detected on P.180 aeroplanes; such failures, due to moisture penetration into the dipstick and subsequent corrosion, can cause incorrect reading of the engine oil low level on the Refuel/Ground Test Panel. If left uncorrected, this situation coul d lead to in-flight engine failure(s). This AD requires:

(1) repetitive visual checks of the engi ne oil levels to prevent an undetected low level condition; (2) repetitive inspections of the o il dipsticks to detect faulty units; (3) replacement of faulty oil dipsticks or visual checks of the oil level at reduced not to exceed intervals, until replacement of faulty units. The engine TC Holder is currently dev eloping a modification that will address the unsafe condition identified in this AD ; once such modification is developed, approved and available, further man datory actions might be considered. This Correction is issued to amend the AD number heading: it was PAD, it is AD.EASA AD No : 2010-0123

EASA Form 110 Page 2/2 Effective Date: 06 July 2010 Required Action(s) and Compliance Time(s): Required as indicated, unless accomplished previously: (1) Within one month or 25 Flight Hours (FH) after the effective date of this AD (whichever occurs first), and ther eafter at intervals not to exceed one month or 25 FH from the last check (whichever occurs first), perform in both engines: (1.1) a visual check of the oil level in accordance with the Accomplishment Instructions, Part A, of Piaggio Aero Industries (PAI) Service Bulletin (SB) 80-0287 Revision 1; (1.2) functional checks of the oil level dipstick in accordance with the Accomplishment Instructions, Pa rt B and C, of PAI SB 80-0287 Revision 1. (2) If the installed oil level dipsticks are compliant with P&WC Service Bulletin no. 14383, subsequent checks may be performed at intervals not to exceed one month or 50 FH, whichever occurs first. (3) If a failed dipstick is detected, and a serviceable spare unit is available, replace it before further flight. (4) If a failed dipstick is detected and a serviceable spare unit is not available, the failed dipstick may be reinstalled, but, until replacement, the visual check of the oil level in the affected engine, required in paragraph (1.1) of this AD, must be r epeated at intervals not to exceed 5 FH. Such intervals may be extended to 10 FH based on oil consumption in accordance with the Accomplishme nt Instructions, Part B, of PAI SB 80-0287 Revision 1. (5) Replacement of the oil level dips tick does not terminate the repetitive inspection requirements of paragraph (1) of this AD. (6) Inspections already performed before the effective date of this AD in accordance with PAI SB 80-0287 or iginal issue are acceptable for compliance with the requirements of this AD. After the effective date of this AD, PAI SB 80-0287 Revision 1 must be used. Ref. Publications: Piaggio Aero Industrie s Service Bulletin 80-0287 Revision 1. 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. This AD was posted on 20 April 2010 as PAD 10-033 for consultation until 18 May 2010. No comments were received during the consultation period. 3. Enquiries regarding this AD should be referred to the Airworthiness Directives, Safety Management & Re search Section, Certification Directorate, EASA. E-mail: ADs@easa.europa.eu

. 4. For any question concerning the tec hnical content of the requirements in this AD, please contact: Piaggio Aero Industries S.p.A - Airworthiness Office. Phone: +39 010 6481353 , Fax: +39 010 6481881; E-mail: airworthiness@piaggioaero.it

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