SERVICE BULLETIN No. SB A22LS-24

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Aeroprakt Ltd Address: 24, Polyova str., 03056 Kyiv, Ukraine E-mail: air@prakt.kiev.ua, aeroprakt.kiev@gmail.com phone: +38 044 496 77 21, fax: +38 044 496 77 31 AEROPRAKT SERVICE BULLETIN No. SB A22LS-24 AMMENDMENT TO PILOT OPERATING HANDBOOK OF A-22, A-22L, A22L2, A-22LS AIRPLANES Repeating symbols: Please, pay attention to the following symbols throughout this document marking important information.  WARNING: Identifies an instruction, which if not followed may cause serious injury or even death.  CAUTION: Denotes an instruction, which if not followed, may cause severe damage.  NOTE: Information useful for better handling. Release date: 26.11.2021 Effective date: 26.11.2021 Completion date: Superseded notice: none Model: A-22, A-22L, A-22L2, A-22LS Serial number(s) affected: All A-22 and A-22L aircraft A-22L2 aircraft serial No. 345, 350, 352-605 A-22LS aircraft serial No. 1-434 Page 1 of 3 AEROPRAKT SERVICE BULLETIN No. SB A22LS-24 Address: 24, Polyova str., 03056 Kyiv, Ukraine E-mail: air@prakt.kiev.ua, aeroprakt.kiev@gmail.com phone: +38 044 496 77 21, fax: +38 044 496 77 31 Page 2 of 3 1) Planning information 1.1) Aircraft affected All A-22 and A-22L aircraft; A-22L2 aircraft serial No. 345, 350, 352-605; A-22LS aircraft serial No. 1-434. 1.2) Reason Introduction of changes into recommendations to braking to avoid resonance of the main landing gear leg vibrations. In the result of hard braking on hard surface runways the main landing gear legs produce resonating vibrations which may cause fatigue cracks on the rear web of the transverse beam of the main landing gear attachment. 1.3) Subject For all A-22 and A-22L aircraft, section 4.3 Flight and subsection Approach and landing of the Flight and Maintenance Manual (F&MM). For A-22L2 aircraft serial No. 345, 350, 352-605 and A-22LS aircraft serial No. 1-434, sections 5.12 Normal landing, 5.13 Short/soft field landing of the Pilot Operating Handbook (POH). 1.4) Compliance Included in the POH of A-22LS with serial No. over 434, and A-22L2 aircraft with serial No. over 605. 1.5) Approval The technical content of this Information Bulletin has been approved by Aeroprakt. 1.6) Manpower Estimated man-hours: 10 minutes. 1.7) Mass data Mass change – none. 1.8) Revision of other documents None 1.9) Spare parts None 2) Spare parts information None AEROPRAKT SERVICE BULLETIN No. SB A22LS-24 Address: 24, Polyova str., 03056 Kyiv, Ukraine E-mail: air@prakt.kiev.ua, aeroprakt.kiev@gmail.com phone: +38 044 496 77 21, fax: +38 044 496 77 31 Page 3 of 3 3) Accomplishment / Instructions 3.1) In the Flight and Maintenance Manual of A-22 and A-22L aircraft, section 4.3 Flight, subsection Approach and landing, after the sentence: Use of brakes for shortening the landing run is recommended only after the nose wheel touches the ground. add the following line: Avoid resonant vibrations of the main landing gear legs while braking! 3.2) In the Pilot Operating Handbook of A-22LS and A-22L2 aircraft, sections 5.12 Normal landing and 5.13 Short/soft field landing replace the sentence: Avoid braking at a high speed or with nose wheel up! with the following: Avoid resonant vibrations of the main landing gear legs while braking!