NHSL’s Quality Management System has been established to meet requirements of TTCAR Nos. 3.16, 3.17, 3.78, and 6.26. It consists of Quality Assurance and Quality Monitoring.

The Quality Assurance Program includes Quality Inspections and Quality Auditing. These activities verify that all maintenance operations are being conducted in accordance with all applicable requirements, standards and procedures.

NHSL holds AMO and AOC certificates, and share a common Quality Assurance Program for maintenance activities. Details are included in NHSL’s Maintenance Procedures Manual and its Quality Manual.

The Quality Monitoring aspect of the QMS ensures that the airworthiness of an aircraft and the serviceability of both operational and emergency equipment are maintained.

Quality inspections and audits are also used in the monitoring of:

1. The accomplishment of pre-flight inspections.
2. Rectification of defects and damage, taking into consideration the Minimum Equipment List.
3. The accomplishment and effectiveness of all maintenance activities in accordance with the
approved aircraft maintenance programme.
4. The accomplishment of any operational and airworthiness directives, and any other.
    Mandatory airworthiness requirements of the TTCAA.
5. Compliance to the Certificate of Airworthiness requirements.
6. The continued compliance with the requirements of the Air Operator Certificate.
7. The maintenance practices involved in the production of airworthy aircraft and aeronautical

Any non-compliance observed during quality monitoring are recorded on the appropriate form and processed. The formal feedback system to the Accountable Manager is also used for overdue responses and findings that require his attention and /or intervention.


NHSL is fully committed to the achievement, maintenance and compliance to all required safety, performance and service standards.

Operational safety and continuous airworthiness of its fleet of aircraft will be maintained via strict compliance to the TTCAR’s and NHSL’s policies and procedures, through the established Quality Management System and implemented Quality Assurance Programme.


It is every employee’s duty to integrate Health, Safety & Environmental protection with continuous improvement to quality driven systems, procedures and standards into all of National Helicopter Services Limited’s operations.

This will be achieved by compliance with all applicable laws and regulations pertaining to aviation, occupational safety, health and the environment.  Where existing laws and regulations do not provide adequate protection, the company will develop and implement its own regulations, procedures and guidelines based upon scientific knowledge, established aviation and engineering practices, appropriate industry standards and environmental stewardship.

It is a requirement for all members of staff in conjunction with the Quality Auditors to review maintenance actions and procedures on a regular basis to ensure that accidents and incidents that could be caused by human factors are eliminated.

Accident prevention alongside quality services is a top priority of National Helicopter Services Limited.

The function of the Quality Management System is to ensure compliance with, and adequacy of operational and maintenance requirements, standards and procedures. Operational procedures are contained within NHSL’s Operations Manuals and maintenance requirements are defined in its Maintenance Control Manual (MCM).

The Quality Management System is monitored closely at regular intervals in order to minimise instances of non-compliance. This is achieved through the Quality Assurance Program (QAP), which consists of all planned and systematic actions necessary to provide confidence that all operations and maintenance activities are being conducted in accordance with all applicable requirements, standards and procedures.

The Quality Assurance Program is administered via the Quality Unit/Department, which includes a Quality Manager for both operations and maintenance activities of its Air Operator and Approved Maintenance Organization Certificates, and Quality Inspectors and Auditors for maintenance and operations.

An integrated Quality Manual, administration and forms exists within the Quality Unit. This ensures a uniform application of the Quality System throughout the entire NHSL operations.