Appendix 11 Contents
A11 Aerial pipeline inspection 159
A11.1 General.......................................................................................................................................................................159
A11.2 General guidelines...................................................................................................................................................159
A11.3 Single-engine aircraft..............................................................................................................................................159
A11.4 Aircraft configuration...........................................................................................................................................160
A11.5 Aircraft maintenance for long-term operations...............................................................................................160
A11.6 General pilot and/or observer requirements.....................................................................................................163
A11.7 Pipeline patrol specific pilot role experience.....................................................................................................163
A11.8 Pilot flight & duty time.........................................................................................................................................165
A11.9 Collision avoidance................................................................................................................................................165
A11.10 Passengers – crew members..................................................................................................................................165
A11.11 Exemptions/Low Altitude Waivers....................................................................................................................166
A11.12 Inadvertent entry into Instrument Meteorological Conditions..................................................................166
A11.13 Flight following......................................................................................................................................................166
A11.14 Flights over urban areas.........................................................................................................................................170
A11.15 Landings and low altitude inspections en-route (helicopters only).............................................................170
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Appendix 11.Aerial pipeline inspection
A11.1 General
In most countries periodic inspections of product pipelines are a requirement of national legislation, although the owner will usually wish to carry out inspections regardless of legislation. As well as checking for any signs of a leak from or damage to a pipeline, the inspection is to check that there is no danger to the integrity of the line from nearby construction or drainage work. The use of helicop-ters or fixed-wing aircraft is often the most effective way of achieving the task. Additional hazards are introduced by the need to operate at an altitude which is lower than optimum for normal opera-tions. These hazards can be managed by complying with the following guidance.
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