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Certification of helicopters for flight in instrument meteorological conditions

Published online by Cambridge University Press:  04 July 2016

H. E. Le Sueur
H. E. Le Sueur*
Affiliation:
Civil Aviation Authority
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Extract

In determining the airworthiness of a helicopter to fly in all weather conditions it is necessary to examine all the effects of such flying on the safety of the passengers, flight crew and third parties involved in such flying. Rule 24 of the Rules of the Air defines that “for VFR outside controlled airspace that an aircraft shall fly at least one nautical mile horizontally and 1000 ft vertically away from a cloud with a visibility range of five nautical miles, except that below 3000 ft the aircraft must be flown clear of cloud and in sight of the surface”. Inside controlled airspace the same rule applies except that the aircraft on Special VFR shall be flown in accordance with the specific instructions given by ATC.

Type
Symposium on “A New Era in Helicopter All-Weather Operations”
Information
The Aeronautical Journal , Volume 78 , Issue 761 , May 1974 , pp. 185 - 187
Copyright
Copyright © Royal Aeronautical Society 1974 

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References

1.The Rules of the Air and Air Traffic Control Regulations 1972 (Statutory Instrument 1972, No. 321).Google Scholar
2.The Air Navigation Order 1972 (Statutory Instrument 1972, No. 129).Google Scholar
3.Report of the Helicopter Legislation Advisory Group, (CAA, London, 1973).Google Scholar
4.The Air Navigation (General) Regulations 1972 (Statutory Instument 1972, No. 322).Google Scholar
5.Flight in Precipitation and Ice-Forming Conditions (BCAR Paper 610).Google Scholar
6.Emergency Power Supply for Electrically Operated Gyroscopic Bank & Pitch Indicators (Artificial Horizons), (Airworthiness Notice No. 81).Google Scholar
7.Electrical Generation Systems—Aircraft not exceeding 5700 kg Maximum Authorised Weight (Airworthiness Notice No. 82).Google Scholar
8.Reference 2, Article 14.Google Scholar
9.Reference 2, Schedule 6.Google Scholar
10.Night and Instrument Flight (BCAR Paper 612).Google Scholar
11.Automatic Flight Control & Stability Augmentation Systems (BCAR Paper 615).Google Scholar