Airworthiness Directive Schedule Aeroplanes Piper PA-18 Series (Super Cub)

DCA/PA18/13 Rear Wall of Hopper - Modification Applicability: All model PA-18 equipped with a hopper Requirement: 1. The original Piper hopper installation (Drg No. 13546) and some locally manufactured hoppers have inadequate slope on the rear wall for the effective discharge of some solid agricultural materials, particularly if the aeroplane is in a climbing attitude. The jettison is then not reliable and there is also a danger of residual load remaining undetected and leading to involuntary overloading with a CG position beyond the aft limit. 2. All hoppers used for the spreading of solid agricultural materials shall have rear walls sloping over their full length at a minimum angle of 60° to the horizontal when the aeroplane is in the level weighing attitude. 3. Pending embodiment of the modification the maximum weight of the aeroplane when operating in the Agricultural Category shall be restricted to 1,820 lb. A placard to this effect is to be displayed in the pilot's cockpit. 4. When this modification has been embodied the aeroplane is again eligible for a maximum weight of 2,070 lb in the Agricultural Category. Compliance: By 1 January 1959 Aeroplanes Piper PA-18 Series (Super Cub) Issued 27 February 2025 Page 3 of 7 CAA of NZ DCA/PA18/14 Vacuum Pump Splined Coupling - Replacement Applicability: All model PA-18 with couplings listed in SB 218 Requirement: Piper SB 218 Compliance: As detailed Effective Date: 28 February 1964 DCA/PA18/15 Fuel Strainer - Inspection Applicability: All model PA-18 Requirement: On all Piper PA-18 series aircraft fitted with fuel strainers having the wire bail assembly P/N 494-644. Examine the wipe bail assembly at the bowl of the fuel strainer. Check that the threaded adjusting stud is securely welded or otherwise properly attached to the wire stirrup. This inspection may be discontinued after incorporation of a modification approved for the purpose. Compliance: Every periodic inspection Effective Date: 30 September 1957 DCA/PA18/16 Cancelled - Purpose Fulfilled DCA/PA18/18 Control Stick - Security - Modification Applicability: All model PA-18 with S/N listed in SL 162 Requirement: Piper SL 162 Compliance: C of A Effective Date: 30 November 1957 DCA/PA18/19 Stabiliser Adjustment Screw - Inspection Applicability: All model PA-18 Requirement: Cases have occurred where the stabiliser adjustment screw has failed, with subsequent malfunctioning of the stabiliser trim control. The following inspection shall be carried out: Examine the stabiliser adjustment screw, P/N 42961-02, for cracks or fractures. Defective screws must be renewed. Compliance: Every periodic inspection Effective Date: 31 August 1958 DCA/PA18/21 Cancelled – Purpose Fulfilled DCA/PA18/22 Cancelled – FAA AD 60-10-08 refers Effective Date: 19 December 2013 Aeroplanes Piper PA-18 Series (Super Cub) Issued 27 February 2025 Page 4 of 7 CAA of NZ DCA/PA18/23 Fuselage Front LG Fittings - Inspection Applicability: All model PA-18 series Requirement: To prevent possible LG collapse, inspect fittings P/N 21272-02 and -03 for cracks. Repair defective installations before further flight Compliance: At intervals not exceeding 100 hours TIS Effective Date: 30 November 1961 DCA/PA18/24 Rudder Pedal Assembly - Weld - Inspection Applicability: Model PA-18 S/N 18-1 through 18-7768 Requirement: Piper SB 207A Compliance: Every periodic inspection Effective Date: 31 August 1962 DCA/PA18/25 Elevator Lower Cable Attachment Horn - Inspection Applicability: All model PA-18 Requirement: Cases have occurred of cracking of the elevator lower cable attachment horn, these cracks have been found to extend from the front edge of the horn, just below the flange towards the lower lightening hole. The elevator lower cable attachment horn is to be inspected for cracks particularly at the lower end below the flange. Compliance: Every 100 hours TIS Effective Date: 28 February 1964 DCA/PA18/26 Rudder Pedal Bottom Cross Tube - Inspection Applicability: All model PA-18 used on agricultural operations not incorporating Airwork Mod AW 277 Requirement: The bottom cross tubes of Rudder Pedals P/N 40842-04 and 40842-05 are to be inspected for abrasion caused by the pedal return spring P/N 40941-00. Compliance: Every 1000 hours TIS Effective Date: 18 February 1957 Note: This requirement was previously a Special Inspection numbered CAA/PA18/14. To avoid confusion with the modification of the same number it has now been renumbered. DCA/PA18/118 Battery Box Lid - Modification Applicability: All model PA-18 used for the carriage of freight Requirement: A case has occurred where the battery box of a Piper PA-18 was made electrically "live" due to the deformation of its lid by the weight of cargo placed upon it. The following modifications are required to prevent recurrence. 1. The battery box lid shall be suitably lined with insulating material to prevent short circuiting of the battery terminals should deformation of the lid occur. 2. The top surface of the battery box lid shall be placarded "WARNING - NO LOAD TO BE PLACED ON LID". Compliance: By 30 June 1967 Aeroplanes Piper PA-18 Series (Super Cub) Issued 27 February 2025 Page 5 of 7 CAA of NZ DCA/PA18/119 Safety Harness Installation - Modification Applicability: All model PA-18 Requirement: Front and Rear seats shall each be fitted with an approved safety harness installation. Compliance: By 31 May 1975 DCA/PA18/120E Cancelled – FAA AD 99-01-05R1 refers Effective Date: 14 January 2014 DCA/PA18/121 Wing Fuel Tank Cap - Inspection & Modification Applicability: All model PA-18 series with fuel tank cap P/N 15296-02 or 60707-02 Requirement: Piper SB 573 Compliance: Within the next 50 hours TIS Effective Date: 31 March 1978 DCA/PA18/122 Cancelled - Purpose Fulfilled NZCAR, Part III Leaflets B.11-5, B.11-6, B.11-8, B.11-9, B.11-13, B.11-17 and B.11-25 are hereby cancelled Aeroplanes Piper PA-18 Series (Super Cub) Issued 27 February 2025 Page 6 of 7 CAA of NZ The State of Design ADs listed below are available directly from the National Airworthiness Authority (NAA) websites. Links to NAA websites are available on the CAA website at: Links to state of design airworthiness directives | aviation.govt.nz If additional NZ ADs need to be issued when an unsafe condition is found to exist in an aircraft or aeronautical product in NZ, they will be added to the list below. 60-10-08 Fuel Selector Valve – Inspection Applicability: Piper PA-18 series aircraft, all S/N fitted with two wing tanks. Note: Piper SB 141 dated 4 October 1955 has been superseded by Piper SB 354B dated 19 May 1982 to introduce new replacement P/N parts. Effective Date: 19 December 2013 99-01-05R1 Cancelled – FAA AD 2015-08-04 refers Effective Date: 3 June 2015 68-05-01 Exhaust Mufflers – Inspection Applicability: Piper PA-18 series aircraft, all S/N. Effective Date: 31 March 1968 2015-08-04 Wing Lift Struts and Forks – Inspection Note 1: FAA AD 2015-08-04 retains all the requirements in superseded FAA AD 99-01-05R1 and expands the AD applicability to include additional aircraft models. FAA AD 99-01-05R1 superseded FAA AD 99-01-05, DCA/J3/5B, DCA/PA18/120E, DCA/PA22/127D and DCA/PA25/121F. For aircraft already in compliance with the cancelled ADs, compliance with FAA AD 2015-08-04 is required at the next inspection required by the cancelled ADs. An inspection method accomplished in accordance with Radiographic Technique 57- 20-01 Rev 1 may be used as an alternate to the two inspection methods defined in paragraph (h)(1) and (h)(2) of FAA AD 2015-08-04. If the radiographic technique is used, inspect at intervals not to exceed 4 years. Note 2: Radiographic Technique 57-20-01 Rev 1 is available on the CAA AD webpage titled: Documents incorporated by reference in AD schedules. Refer: Documents incorporated by reference in AD schedules | aviation.govt.nz Effective Date: 3 June 2015 81-06-08 Lower Fuselage Attachment Tab – Inspection Applicability: Piper PA-18-150 aircraft, S/N 18-8602 through to 18-8109013. Note: Piper SB 706, dated 23 February 1982, or later approved revision pertains to the subject of this AD. Compliance: Initial compliance required before the issue of a New Zealand Certificate of Airworthiness, or at the next Review of Airworthiness (RA), whichever is the sooner, unless previously accomplished. Repetitive inspections, if required, are to be accomplished at intervals not to exceed the times specified in the FAA AD. Effective Date: 25 January 2018 Piper PA-18 Series (Super Cub) Issued 27 February 2025 Page 7 of 7 CAA of NZ * 2025-02-11 Rudder Post – Inspection Applicability: Piper PA-18, PA-18S, PA-18 “105” (Special), PA-18S “105” (Special), PA-18A, PA-18 “125” (Army L-21A), PA-18S “125”, PA-18AS “125”, PA-18 “135” (Army L-21B), PA- 18A “135”, PA-18S “135”, PA-18AS “135”, PA-18 “150”, PA-18A “150”, PA-18S “150” and PA-18AS “150, PA-18A (Restricted), PA-18A “135” (Restricted), PA-18A “150” (Restricted)”, all S/N, that are not fitted with a rudder having a rudder post made from 4130N low alloy steel. Effective Date: 20 March 2025