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Aviation Major Hazard Standard - MIRMgate

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<strong>Major</strong> <strong>Hazard</strong> <strong>Standard</strong><br />

MHS 03 - <strong>Aviation</strong> <strong>Standard</strong> documen Revision 3<br />

issued 20 August 2001<br />

** Uncontrolled copy. Use latest revision **<br />

Flying Height and Airspeed<br />

Low level flying is inherently dangerous and the<br />

risks generally increase as the flying height is<br />

lowered. Aircraft engaged in low level operations<br />

shall be flown at the maximum clearance height<br />

possible consistent with the objectives of the work.<br />

The aircraft should not be flown at an airspeed<br />

below that which gives the minimum rate of descent<br />

in the event of an engine failure.<br />

During any transit flights to/from an operational<br />

area, the aircraft should be flown at an altitude<br />

considered to be a normal safe flying height for the<br />

aircraft and the area of operations.<br />

Area of Operations<br />

The geographical area and boundaries for the<br />

operations are to be identified including any special<br />

zones or areas relevant to the work. Climatic and<br />

topographical information should be provided.<br />

Particular attention should be given to obstacles and<br />

other hazards to flight operations. Large scale maps<br />

of the area should be provided.<br />

Where appropriate, community consultation should<br />

take place to inform the community of planned<br />

operations in the area. Such liaison should continue<br />

throughout the operations.<br />

Aircraft flown in low level operations should not be<br />

operated in close proximity to personnel on the<br />

ground. Prior to any low level operations, adequate<br />

safety margins and controls shall be established<br />

which minimise the hazards to personnel and<br />

property during such operations.<br />

Communications and Flight Following<br />

Effective and reliable communications should be<br />

established between the aircraft and any base camp<br />

supporting the aircraft for the duration of the<br />

activity. Where terrain or special equipment being<br />

used prevents constant radio contact, provision is to<br />

be made for ‘ops normal’ calls at prior agreed<br />

intervals. These are to be stipulated in the<br />

operational procedures, and should be preferably 30<br />

minutes but not exceeding 45 minutes.<br />

A log shall be maintained at the base camp of all<br />

communications between the aircraft and the base.<br />

The log shall record all position reports, their time<br />

and the remaining aircraft endurance.<br />

Where a Flight Service is involved in the monitoring<br />

of the aircraft, liaison between the aircraft operator<br />

and the Flight Service responsible for the area<br />

should identify the intended area of operations, and<br />

methods by which position reports can be given.<br />

Details of any ground party supporting the<br />

operation, and methods by which they can be<br />

contacted, should be registered with Flight Service<br />

prior to the operation.<br />

Search and Rescue Coverage<br />

As part of the emergency response procedures, a<br />

search and rescue (SAR) plan is to be established<br />

and outlined in the operational procedures. Daily<br />

SAR briefings are to be given prior to any flying<br />

activity. The SAR plan is to incorporate the<br />

communications and flight following procedures<br />

adopted for the operation.<br />

Aircraft engaged in specialised operations are to be<br />

in radio contact with an appropriate organisation<br />

holding SAR responsibility. If a national service is<br />

not available, WMC or the aircraft operator is to<br />

assume that responsibility and ensure that<br />

appropriate resources are available to conduct an<br />

effective SAR response.<br />

Clothing<br />

Personnel in aircraft conducting low level<br />

specialised role flights, should wear clothing which<br />

offers protection against possible hazards and which<br />

is appropriate for the local conditions.<br />

It is recommended that the following be worn:<br />

• cotton or other non-synthetic garments<br />

• flying helmet meeting industry safety standards<br />

• robust shoes<br />

Specific Requirements for Airborne<br />

Pipeline Inspection Patrols<br />

Aircraft<br />

Aircraft used in pipeline inspection patrols may be<br />

either single engine or multi engine and shall:<br />

• be capable of safe operation at slow speeds at<br />

low altitudes<br />

• have high all round visibility capability<br />

• have serviceable wing strobe lights<br />

• shall display its landing lights during the<br />

inspection patrol<br />

SAF-MHS-03 Rev. 03 Docs: 55221 Issued: 20/08/01 Page 24 of 29

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