Airworthiness directives › 2020-22-12
AD 2020-22-12 Airworthiness Directives; Polskie Zaklady Lotnicze Sp. z o.o Airplanes
Models named: PZL M28 05. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Polskie Zaklady Lotnicze Sp. z o.o. Model PZL M28 05 airplanes, serial numbers AJE00301 through AJE00343, and AJE00345 through AJE00347, certificated in any category.
Compliance
Unless already done, do the following actions in paragraphs (f)(1) and (2) of this AD: (1) Within the next 200 hours time-in-service (TIS) after the effective date of this AD or within the next 8 months after the effective date of this AD, whichever occurs first: (i) Inspect each electrical wire harness in the center wing and the left-hand and right-hand outer wing fuel tanks for cracking, tears, and seizing of the thermo-shrinkable tubes in accordance with paragraphs II.1 through 2 a) of the Procedure for Bulletin Execution section in Polskie Zaklady Lotnicze Sp. z o.o. Service Bulletin No. E/12.141/2018, dated May 15, 2018. (ii) If there is a tear or any cracking in or any seizing of an electrical wire harness thermo-shrinkable tube, before further flight, replace the harness in accordance with section II. a) Replacement of harness KL8 (KP), II. b) Replacement of Harness KL9 (KP9), or II. c) Replacement of harness KL10 (KP10), as applicable, of the Procedure for Bulletin Execution in Polskie Zaklady Lotnicze Sp. z o.o. Service Bulletin No. E/12.141/2018, dated May 15, 2018. (2) As of the effective date of this AD, do not install any electrical wire harness part number 28.14.7205.073.000, 28.14.7205.074.000, 28.14.7205.075.000, 28.14.7205.076.000, 28.14.7205.077.000, or 28.14.7205.078.000, that has more than zero hours TIS on any airplane, unless it has passed the inspection required by paragraph (f)(1)(i) of this AD.
Required actions
The Manager, International Validation Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to Doug Rudolph, Aerospace Engineer, FAA, General Aviation & Rotorcraft Section, International Validation Branch, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4059; fax: (816) 329-4090; email: doug.rudolph@faa.gov. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO.
Unsafe condition
This AD was prompted by mandatory continuing airworthiness information (MCAI) originated 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 defective thermo-shrinkable tubes installed on the electrical harnesses located in the fuel tanks. The FAA is issuing this AD to prevent broken pieces of the thermo-shrinkable tubes from blocking the jet pump, reducing fuel supply to the engines, and resulting in the inability to use all the fuel in the fuel tanks. This condition could lead to reduced engine power and airplane performance.
Affected ADs
None.
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