6.3 Fuel planning........................................................................................................................................................... 42

6.3.1 IFR flight plan ............................................................................................................................................................42

6.3.2 VFR flight plan ..........................................................................................................................................................42

6.4 Composition of flight crew ...................................................................................................................................43

6.4.1 Two pilot operations ................................................................................................................................................. 43

6.4.2 Single pilot operations .............................................................................................................................................. 43

6.5 Flying hour limits - recommended maximum ..................................................................................................43

6.6 Aircrew life jackets and aircraft homing devices ..............................................................................................43

6.7 Sideways facing seats ...............................................................................................................................................43

6.8 Specialist roles .........................................................................................................................................................44

6.8.1 Airborne geophysical survey requirements ......................................................................................................... 44

6.8.2 Aerial pipelines inspection ..................................................................................................................................... 44

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6 Fixed-wing operations – public
transport & aerial work

6.1 Fixed-wing aircraft standards
6.1.1 Minimum & operational role-specific equipment
In addition to the minimum equipment recommendations contained in the Table of Equipment Fit and specific operational role equipment recommended in other Sections of this Guide, the following should be considered.

6.1.2 Certification recommendations
Wherever practical those aeroplanes that are certified to Federal Aviation Regulation US 14CFR Part 25 (or equivalent), or have documented and demonstrated single-engine performance which meet the criteria of Part 25, should be used.
Those aeroplanes certified to Part 25 (or equivalent) have higher performance criteria than those certified to US 14CFR Part 23 (or equivalent).
It should be understood that certification standards other than those in Part 25 (or equivalent) for twin-engine aeroplanes may vary significantly relative to demonstrated and documented perform-ance criteria.

6.1.3 Multi-engine aeroplanes with single-engine performance
Multi-engine aeroplanes capable of sustaining a 1% net climb gradient at or above lowest safe alti-tude with one engine inoperative (OEI) and flown using two pilots should be used whenever any of the following conditions exist:
. 
When operating in a hostile environment (see Appendix 6).

. 
Any portion of the flight will be in instrument (non-visual) conditions.

. 
When operating on an extended over water flight.

. 
Any portion of the flight is planned for, or performed, at night.

6.1.4 Multi-engine aeroplanes without single-engine performance
Multi-engine aeroplanes without single-engine performance (as described in paragraph 6.1.3 above) or Piston powered aeroplanes should ONLY be used when the following conditions are met:
　
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