Title Page
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Site conducted
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Conducted on
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Prepared by
690-4 Engineering Audit Checklist
1. Basic Principles
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The Aircraft Operator provides airworthy aircraft and demonstrates that continuing airworthiness activities and aircraft maintenance are performed in accordance with its approved Maintenance Control Manual (MCM).
2 & 3. Continuing Airworthiness – Management
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An AMP is developed and approved by the NAA
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Check for MEL. Modifications. Airframe and Engine logbooks, AD & SB.
4, 5 & 6 Continuing Airworthiness – Maintenance Data. Records & MEL/MDS
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The Aircraft Operator manages the appropriate maintenance data (any applicable requirement, AD, SB, or information issued by the OEM/STC holder and/or NAA).
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ATL, logbooks, W&B, DDL, Repairs, Flight time tracking, backup system (24hrs), records storage.
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The Aircraft Operator has a Minimum Equipment List (MEL)/Minimum Departure Standard (MDS) for each aircraft in the fleet
7. Continuing Airworthiness – Reliability Programme
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The Aircraft Operator has a reliability programme in place appropriate to the size and complexity of the operation
9 10 & 11. Maintenance Management - AMO, Planning & Records
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Document procedures in a dedicated manual (e.g. AMO PM) that is approved by the NAA and amended as necessary and reflects the actual organization processes in place.
12. FOD Checks
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On completion of each maintenance task, a verification check is carried out to ensure the aircraft or component is clear of all tools, equipment, cleaning materials, such as rags, and any other extraneous parts and material, and that all access panels removed have been refitted correctly
13. Maintenance Management – Independent Inspections / Critical Maintenance Tasks (CMTs)
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CMTs are subject to an independent inspection, carried out firstly by an engineer holding a “Certificate of Release to Service (CRS)” authorization, who assumes full responsibility for the satisfactory completion of the work, then a second person not involved in the original task, or similar system (e.g. other engine), who confirms that no deficiencies have been found and that the work has been satisfactorily completed.
15 & 16. Maintenance Observation Programme (MOP) & Compliance Monitoring
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Identify, understand and rectify weaknesses via a structured MOP
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There is a system in place to review human errors in maintenance and quality through a Just Culture mechanism with the focus on improving company procedures and enhancing the barriers to prevent maintenance errors
18. Maintenance Check Flights (MCF)
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The aircraft operator develops a specific training program for complex Maintenance Check Flights (MCF), appropriate for the complexity of the aircraft and the level of the MCF required. If required, the aircraft operator assigns this MCF training program to a specific selection of flight crew and as required, engineers.
19 to 23. Maintenance Facilities & Aircraft Components
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Appropriate facilities and processes for control of tools spares and equipments.
24. Maintenance - Aircraft Fuel Checks
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Document the fuel quality control policies, processes and procedures to ensure fuel quality prior to delivery to the aircraft are verified as adequate in the logistics chain immediately prior to the point at which fuel is received (and, by default, the point at which the aircraft operator becomes the owner or custodian of that fuel); and Aircraft fuel checks are carried out daily, or as specified by the airframe manufacturer.
25. Maintenance personnel - Fatigue Prevention
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The following minimum standard is applied to all engineering staff unless national legislation is more restrictive:<br>o Total work periods do not exceed 12 hours in any 24-hour period. Where it is essential that the working period is extended, the Head of Maintenance approves it on a case-by-case basis. This approval is documented along with any required mitigations. <br>o In no case may an approved work period authorized under the above process exceed 16 hours.<br>o Each full working shift is followed by a minimum 10-hour rest period.
26 & 27. Maintenance Personnel – Qualification and Experience
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Maintenance management and personnel are qualified and competent.
31 to 36. Health and Usage Monitoring System (HUMS) Requirements
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Helicopters are fitted with an approved HUMS, operated iaw IOGP requirements
Engineering Operations Findings & Observations
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Findings on items 5, 12, 13, 16, 15, 18, 20, 24, 25 & 27.
