Continuing Airworthiness Notices

A Continuing Airworthiness Notice (CAN) is intended to alert, educate, and make recommendations to the aviation community. A CAN contains non-regulatory information and guidance that does not meet the criteria for an Airworthiness Directive (AD). The inspections and practices described in a CAN must still be carried out in accordance with the applicable NZCAR Parts 21, 43 and 91. CAN numbering is by ATA Chapter and a serial number for the next CAN in that ATA Chapter.

Other Authorities Advisory Airworthiness Info

General Advice

ATA Codes: 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 14, 18, 20

Applicability Subject CAN No. Issue Date
Cargo Hook Systems – Inspection and Maintenance Requirements. To advise operators and maintainers of cargo hook systems that compliance with manufacturer provided Instructions for Continuing Airworthiness (ICA) is required to ensure the hook system is kept in an airworthiness condition. This Continuing Airworthiness Notice (CAN) focusses on wear and damage found on Onboard Systems Cargo Hooks.  Cargo hook systems from other manufacturers (e.g. Breeze Eastern) suffer the same wear and damage as identified in this CAN. All cargo hook systems must be maintained in accordance with the applicable manufacturer ICA. 05-006 (PDF 232 KB) 01 Mar 2017
Measuring tapes used to determine the centre of gravity (CG), and the weight and balance of an aircraft. This Continuing Airworthiness Notice (CAN) is prompted by a report received by the CAA of finding a measuring tape with two measuring scales printed on it. One scale is marked in mm, and a second scale marked in units of 1/33m, which was mistaken to be 1” increments. Aircraft maintainers must be familiar with the units of measurement marked on the measuring tape when determining the weight and balance of an aircraft. 08-001 Revision 1 (PDF 110 KB) 21 Oct 2016
Onboard Systems Cargo Hooks P/N 528-023-02, 528-013-03 and 528-023-51 This (CAN) is prompted by a recent inadvertent load release during an external load operation due to a fractured conduit of the manual release cable. Prior to every external load operation the cargo hook manual release cable must be inspected for broken or kinked conduit, inner cable kinks, frays, or sticky operation. 05-005 (PDF 175 KB) 13 Sep 2016
Tandem Parachute and Passenger Harness Maintenance All tandem parachutes and tandem passenger harnesses. 05-004 (PDF) 14 Nov 2012
All Cessna 172N aircraft and Lycoming O-320-H2AD engines Cessna 172N & Lycoming O-320-H2AD Crankshaft Bearings 01-002 (PDF) 07 Sep 2012
Cessna SID Compliance All Cessna 100 and 200 series aircraft. 05-003 (PDF) 04 Sep 2012
Aircraft fitted with standard aircraft hardware MS 21042 / NAS 1291 series nuts. MS 21042 and NAS 1291 Series Nuts – Cracks due to Hydrogen Embrittlement 14-001 (PDF) 02 Dec 2011
SB Compliance Service Bulletin Compliance 05-002 (PDF) 15 Jan 2008
Unapproved Parts Suspected Unapproved Parts – M&M International Aerospace Metals 01-001 (PDF) 28 Sep 2006
Onboard Systems SB Onboard Systems Service Bulletin 159-015-00 05-001 (PDF) Jun 2005
R22 & R44 Cargo Hook Gimbal Failure 05-001 (PDF) Jun 2005
R22 Main Rotor Blade Failure 04-001 (PDF) Jan 2005



ATA Codes: 21, 22, 23, 24, 30, 31, 33, 34, 74, 77

Applicability Subject CAN No. Issue Date
Denso W24EMR-C spark plugs installed on, but not limited to Guimbal Cabri G2 helicopters Denso W24EMR-C spark plug fitted to a Cabri G2 helicopter may have been defective and contributed to an in-flight fire which subsequently destroyed the aircraft shortly after landing. 74-002 (PDF) 10 Aug 2016
All 406MHz Emergency Locator Transmitter (ELT) beacons, including those ELTs with a panel mounted remote switch that is self-powered by an internal battery. ELT batteries must be replaced by no later than the battery expiry date specified on the ELT battery data label. 23-003
Rev 2
(PDF 18 KB)
15 Jun 2016
Champion Aerospace issued Slick SB1-15 to introduce a replacement K3008 distributor gear assembly with an improved electrode finger retention. Slick 4200, 4300 and 4700 series magnetos listed in Slick SB1-15 dated 7 February 2015 74-001 (PDF) 15 Jul 2015
All 406MHz Emergency Locator Transmitters (ELT) mounted with hook and loop style fasteners (also commonly known as Velcro®). Emergency Locator Transmitters (ELT) Mounting 23-002 (PDF) 16 Nov 2012
All maintainers and operators of Microair Avionics T2000SFL Transponders. Microair Avionics T2000SFL Transponders 34-004 (PDF) 23 Sep 2011
All 406 MHz Emergency Locator Transmitter (ELT) beacons. 406 MHz Emergency Locator Transmitters (ELT) - Battery Replacement 23-001 Revision 1 (PDF) 23 Sep 2011
Aircraft fitted with Rockwell Collins TPR 901 Mode S Transponders Rockwell Collins TPR 901 Mode S Transponders P/N 822-1338-003, all S/N 34-003 (PDF) 24 Aug 2011
Secondary Surveillance Radar (SSR) Transponder inspections and tests required by CAR Rule Part 91.63. This rule part requires the transponder tests and inspections listed in Part 43 Appendix E. CAR Rule Part 43 Appendix E – ATC Transponder Tests and Inspections 34-002 (PDF) 05 Aug 2011
Honeywell MK XXII Enhanced Ground Proximity Warning Systems (EGPWS) installed on helicopters Concern that older EGPWS software versions may result in unannunciated loss of EGPWS function. 31-001 (PDF) 29 Jul 2011
Mode S Transponder Mode S Transponder Maintenance 34-001 (PDF) 12 Jul 2011
Kelly Alternators Kelly Aerospace Alternators 24-001 (PDF) 02 Jul 2008



ATA Codes: 25, 26, 27, 28, 29, 30, 32, 35, 36, 37, 38, 51, 52, 53, 54, 55, 56, 57, 61, 62, 63, 64, 65, 67

Applicability Subject CAN No. Issue Date

All MD helicopters Inc. (MDHI) 369D, 369E, 369FF, 369HE and 369HS

This CAN is issued to alert operators and maintainers of a recent failure of a tail rotor fork bolt P/N 369A1602-3 on a Hughes 369D helicopter. The bolt should be installed using the elongation method to ensure proper clamp-up of the tail rotor hub and fork, and if during installation of a tail rotor fork bolt the elongation exceeds 0.011 inches (0.279mm), then the bolt must be replaced.

02-001 (PDF 33 KB)

16 Feb 2017
Robinson R44 series helicopters fitted with Tail Rotor Blades (TRBs) with P/N C029-1 or C029-2

To advise aircraft operators and maintainers that the CAA has received a number of reports of finding cracked TRBs with P/N C029-1 and C029-2 on Robinson R44 series helicopters.
RHC SB-83 requires the introduction of a Special Pilot Caution into the AFM until TRBs with P/N C029-3 are installed.


(PDF 17 KB)

16 Dec 2016
Pacific Aerospace Cresco 08-600 aircraft The aircraft maintenance manual provides instructions to ensure an aircraft can be maintained in an airworthy condition. 27-010 (PDF) 29 Jun 2016
MD Helicopters 369/500/600 - MRB Abrasion Strip Inspections  Delamination or dis-bonding of the abrasion strip on
Main Rotor Blades (MRBs) fitted to MD helicopters. MRB abrasion strip delamination or dis-bonding can cause vibration and possible loss of aircraft control.
Rev 1
(PDF 19 KB)
07 Feb 2017
Schempp-Hirth Discus b and Discus CS gliders - Flight Controls Incorrect installation of the stowage tray can result in an undetected gap between the tray and the aft bulkhead through which loose stowed equipment can enter the flight control system. 27-008 (PDF) 16 Mar 2015
Beechcraft models 23, A23, A23A, B23, C23, A23-24, A24, A24R, B24R and C24R aircraft Stabiliser Hinge Assembly Fasteners - Inspection and Replacement 27-007 (PDF) 19 Sep 2013
Plastic two part detachable flight Control Column hand grips fitted on numerous aircraft type. Control Column Grip 27-006 (PDF) 16 Apr 2012
All AS350 series helicopters fitted with a resistance type Fuel Quantity Indication System (FQIS). AS350 Resistance Type Fuel Quantity Indication System (FQIS). 28-009 (PDF) 26 Sep 2012
All operators and maintainers of Cessna 150, 152 and A152 Series Aircraft. Cessna 150/152 Series Horizontal Stabiliser Spars - Cracks. 51-001 (PDF) 16 Apr 2012
Control cable end fittings manufactured from SAE AISI 303 Se stainless steel that have been in service for 15 years or longer. Affected cable end fittings include, but are not limited to P/N AN669, MS21260 and MS20668 eye end fittings. Control Cable End Fittings – Inspection and Replacement 27-005 Revision 2 (PDF) 19 Aug 2013
All operators and maintainers of single reciprocating engine Cessna 200 series aircraft with 15 years or more TIS since date of manufacture. Cessna 200 Series Horizontal Stabilisers 55-001 (PDF) 22 Sep 2011
Piper Aircraft fitted with a Gascolator All Piper aircraft models fitted with a Gascolator (also called a fuel strainer or fuel filter) to separate contaminants from the fuel system. 28-008 (PDF) 02 Sep 2011
All operators and maintainers of Robinson R44 series helicopters fitted with a hydraulic assisted flight control system Robinson R44 Helicopters Flight Control Hydraulic Servos 27-004 (PDF) 21 Mar 2011
Liquid Petroleum Gas (LPG) Fuel Cylinders used in Hot Air Balloons Liquefied Petroleum Gas (LPG) Fuel Cylinders used in Hot Air Balloons 28-007 (PDF) 25 Feb 2010
Pierburg Kraftstoff Electronic Fuel Pumps P/N 7.21440.530 28-006 (PDF) 02 Feb 2010
All Robinson R22 Helicopters Robinson R22 Main Rotor Drive System and Drive Belts 63-001(PDF) 07 Sep 2009
Zenith, Zenair CH601 Aircraft Series Safety Recommendation 27-003 (PDF) 20 Apr 2009
C180 and C185 Series Aircraft Rudder Pedal Assemblies 27-002 (PDF) 08 Apr 2009
PA-31 Forward Spar Attach Brackets 57-001 (PDF) 06 Nov 2008
PA-31 Main Gear Retraction Arms P/N 42042-000 & P/N 42042-002 32-002 (PDF) 10 Sep 2012
PA-31 Nose Gear Link Assembly P/N 40336-000 32-003 (PDF) 06 Nov 2008
R44 Hose Unions at Fuel Control 28-005 (PDF) 06 Nov 2008
C172, C180 & C185 Primary Flight Control Yoke Inspection 27-001 (PDF) 04 Apr 2008
Fuel Caps Fuel Contamination due to Fuel Filler Cap Failure 28-004 (PDF) 03 Mar 2008
SR20 SR22 Aircraft Fuel System 28-003 (PDF) 28 Feb 2008
MD369 MDHI Torque Event Inspections 62-001 (PDF) 14 Dec 2007
Kelly Fuel Pumps Kelly Fuel Pump Diaphragm Assembly 28-002 (PDF) 24 Jun 2011
PA-34 Aircraft Hydraulic Pumps 29-001 (PDF) 20 Aug 2007
PA-34 Aircraft fitted with a Pneumatic Pressure Operated Gyro Instrument System 36-001 (PDF) 20 Aug 2007
Ethanol Blended Fuel Ethanol Blended Auto Fuel 28-001 (PDF) 20 Aug 2007
Tecnam Main Wheel Inner Tubes 32-001 (PDF) 05 Jul 2007



ATA Codes: 49, 71, 72, 73, 75, 76, 77, 78, 79, 80, 81, 82, 83, 85

Applicability Subject CAN No. Issue Date
Connecting rod small end bushes with Lycoming P/N LW-13923. Affected engines may include locally overhauled engines, as well as factory new/reworked engines. This Continuing Airworthiness Notice (CAN) is prompted by local and Australian reports of finding failed connecting rod small end bushes with Lycoming P/N LW-13923. Affected small end bushes tend to work loose in service and migrate out the connecting rod small end bore.
As the small end bushes migrate from the connecting rod small end bore they are held in position by the inner piston wall. Wear slowly begins to erode the length of the bush. This initial wear produces small particles of bronze which should be evident in the engine oil filter. Once the wear has progressed to allow the bush to significantly egress from the bore, the lack of surface area and the abnormal loading will result in the bush breaking up.
Furthermore, the reduction in the length of the bush will result in an insufficiently supported piston pin, which could cause failure of the connecting rod small end bore, and result in a catastrophic engine failure.

85-008 Revision 1(PDF 131 KB)

16 Dec 2016
Rolls-Royce/Allison 250-C20 series engines fitted with a 3rd stage turbine wheel P/N 23065818, or 4th stage turbine wheel P/N 23055944. This Continuing Airworthiness Notice (CAN) is issued to advise of a recent uncontained failure of a 4th stage turbine wheel P/N 23055944 on a 250-C20R/2 engine installed on a MD520N helicopter. In the most current revision of Rolls-Royce CEB A-1400 (CEB A-72-4095) the OEM advises that testing and analysis shows that operation in the N2 speed avoidance range is the most possible cause. 72-002 (PDF 22KB) 18 Nov 2016
Lycoming O-540 and IO-540 series engines installed on Robinson R44 series helicopters This Continuing Airworthiness Notice (CAN) is prompted by two defect reports received by the CAA of finding failed idler gear posts. Both failures occurred on Lycoming IO-540-AE1A5 engines. The first reported idler gear post failure was found during a 100 hour inspection with metal in the engine oil filter. The second reported idler gear post failure resulted in an in-flight loss of engine power. 85-007 (PDF 1MB) 18 Nov 2016
Precision RSA-10AD1 Fuel Control Unit (FCUs) installed on, but not limited to Robinson R44 11 helicopters fitted with a Lycoming IO 540 engine Precision RSA-10AD1 Fuel Control Unit (FCU) - Possible Fuel Flow Restriction 73-003 (PDF) 25 Jun 2014
All Robinson R44 series helicopters R44 Engine Exhaust - Cabin Heater System Failures 78-001 (PDF) 02 Sep 2011
Schweizer 269C-1 Post Flight Engine Checks Schweizer 269C-1 Post Flight Engine Checks 73-002 (PDF) 01 Mar 2011
Teledyne Continental Motors (TCM) cylinder assemblies fitted to engine models C75, C85, C90, C125, C145, O-200, O-300 and GO-300 series engines and Rolls Royce C90, O-200 and O-300 series engines. Teledyne Continental Motors (TCM) Cylinder Assembly Rocker Shaft Bosses 85-006 (PDF) 26 Mar 2010
Trelleborg Hydro K fuel and/or oil hoses Trelleborg Hydro K Fuel and Oil Hoses 71-001 (PDF) 11 Feb 2010
Lycoming Engines Lycoming Crankshaft Propeller Flanges with Lightening Holes 85-005 (PDF) 15 Dec 2009
TCM Teledyne Continental (TCM) Engines Crankshaft Gear P/N 657175 85-004 (PDF) 06 Apr 2009
TCM Engines Propeller Strikes and Hydraulic Locks 85-003 (PDF) 09 Oct 2008
R2000 Carburettor Heat Ducting 75-001 (PDF) 06 Aug 2008
ECI Rings Engine Components Inc. (ECI) Plasma-faced Top Compression Rings 85-002 (PDF) 26 Oct 2007
Oil Filters Champion Oil Filters P/N CFO-100-1 79-001 (PDF) 05 Jul 2007
GA8 Throttle Cable 76-001 (PDF) 05 Jul 2007
ECI Cylinders Inspection of Engine Components Inc. (ECI) Cylinders 85-001 (PDF) 20 Nov 2006


Additional Information

GA Defects